DOS updates for new tree (Daniel Borca)

20 files changed, 7540 insertions, 7489 deletions

diff --git a/src/mesa/drivers/dos/blit.S b/src/mesa/drivers/dos/blit.S
index 7d0da5da28..f5888c7e39 100644
--- a/src/mesa/drivers/dos/blit.S
+++ b/src/mesa/drivers/dos/blit.S
@@ -1,199 +1,199 @@
-/*

- * Mesa 3-D graphics library

- * Version:  4.0

- * 

- * Copyright (C) 1999  Brian Paul   All Rights Reserved.

- * 

- * Permission is hereby granted, free of charge, to any person obtaining a

- * copy of this software and associated documentation files (the "Software"),

- * to deal in the Software without restriction, including without limitation

- * the rights to use, copy, modify, merge, publish, distribute, sublicense,

- * and/or sell copies of the Software, and to permit persons to whom the

- * Software is furnished to do so, subject to the following conditions:

- * 

- * The above copyright notice and this permission notice shall be included

- * in all copies or substantial portions of the Software.

- * 

- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS

- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL

- * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN

- * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN

- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

- */

-

-/*

- * DOS/DJGPP device driver v1.3 for Mesa

- *

- *  Copyright (C) 2002 - Borca Daniel

- *  Email : dborca@yahoo.com

- *  Web   : http://www.geocities.com/dborca

- */

-

-

-		.file	"blit.S"

-

-/*

- * extern unsigned int vesa_gran_mask, vesa_gran_shift;

- * extern int vl_video_selector;

-

- * extern void *vl_current_draw_buffer;

- * extern int vl_current_stride, vl_current_height;

- * extern int vl_current_offset, vl_current_delta;

- */

-

-		.text

-

-/* Desc: VESA bank switching routine (BIOS)

- *

- * In  : EBX=0, EDX = bank number

- * Out : -

- *

- * Note: thrashes EAX

- */

-		.p2align 5,,31

-_vesa_swbankBIOS:

-		movw	$0x4f05, %ax

-		int	$0x10

-		ret

-

-		.p2align 2,,3

-		.global	_vesa_swbank

-_vesa_swbank:	.long	_vesa_swbankBIOS

-

-/* Desc: void vesa_b_dump_virtual (void);

- *

- * In  : -

- * Out : -

- *

- * Note: uses current draw buffer

- */

-		.p2align 5,,31

-		.global	_vesa_b_dump_virtual

-_vesa_b_dump_virtual:

-		cld

-		pushl	%es

-		pushl	%ebx

-		pushl	%esi

-		pushl	%edi

-		pushl	%ebp

-		movl	_vl_video_selector, %es

-		movl	_vl_current_draw_buffer, %esi

-		movl	_vl_current_offset, %edi

-		movl	_vesa_gran_shift, %ecx

-		movl	_vesa_gran_mask, %ebp

-		movl	%edi, %edx

-		xorl	%ebx, %ebx

-		andl	%ebp, %edi

-		shrl	%cl, %edx

-		incl	%ebp

-		call	*_vesa_swbank

-		movl	_vl_current_stride, %ecx

-		movl	_vl_current_height, %eax

-		movl	_vl_current_delta, %ebx

-		shrl	$2, %ecx

-		.balign	4

-	0:

-		pushl	%ecx

-		.balign	4

-	1:

-		cmpl	%ebp, %edi

-		jb	2f

-		pushl	%eax

-		pushl	%ebx

-		incl	%edx

-		xorl	%ebx, %ebx

-		call	*_vesa_swbank

-		popl	%ebx

-		popl	%eax

-		subl	%ebp, %edi

-		.balign	4

-	2:

-		movsl

-		decl	%ecx

-		jnz	1b

-		popl	%ecx

-		addl	%ebx, %edi

-		decl	%eax

-		jnz	0b

-		popl	%ebp

-		popl	%edi

-		popl	%esi

-		popl	%ebx

-		popl	%es

-		ret

-

-/* Desc: void vesa_l_dump_virtual (void);

- *

- * In  : -

- * Out : -

- *

- * Note: uses current draw buffer

- */

-		.p2align 5,,31

-		.global	_vesa_l_dump_virtual

-_vesa_l_dump_virtual:

-		cld

-		pushl	%es

-		pushl	%esi

-		pushl	%edi

-		movl	_vl_video_selector, %es

-		movl	_vl_current_draw_buffer, %esi

-		movl	_vl_current_offset, %edi

-		movl	_vl_current_stride, %ecx

-		movl	_vl_current_height, %edx

-		movl	_vl_current_delta, %eax

-		shrl	$2, %ecx

-		.balign	4

-	0:

-		pushl	%ecx

-		rep;	movsl

-		popl	%ecx

-		addl	%eax, %edi

-		decl	%edx

-		jnz	0b

-		popl	%edi

-		popl	%esi

-		popl	%es

-		ret

-

-/* Desc: void vesa_l_dump_virtual_mmx (void);

- *

- * In  : -

- * Out : -

- *

- * Note: uses current draw buffer

- */

-		.p2align 5,,31

-		.global	_vesa_l_dump_virtual_mmx

-_vesa_l_dump_virtual_mmx:

-#ifdef USE_MMX_ASM

-		pushl	%esi

-		pushl	%edi

-		movl	_vl_video_selector, %fs

-		movl	_vl_current_draw_buffer, %esi

-		movl	_vl_current_offset, %edi

-		movl	_vl_current_stride, %ecx

-		movl	_vl_current_height, %edx

-		movl	_vl_current_delta, %eax

-		shrl	$3, %ecx

-		.balign	4

-	0:

-		pushl	%ecx

-		.balign	4

-	1:

-		movq	(%esi), %mm0

-		addl	$8, %esi

-		movq	%mm0, %fs:(%edi)

-		addl	$8, %edi

-		decl	%ecx

-		jnz	1b

-		popl	%ecx

-		addl	%eax, %edi

-		decl	%edx

-		jnz	0b

-		popl	%edi

-		popl	%esi

-		emms

-#endif

-		ret

+/*
+ * Mesa 3-D graphics library
+ * Version:  4.0
+ * 
+ * Copyright (C) 1999  Brian Paul   All Rights Reserved.
+ * 
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ * 
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/*
+ * DOS/DJGPP device driver v1.3 for Mesa
+ *
+ *  Copyright (C) 2002 - Borca Daniel
+ *  Email : dborca@yahoo.com
+ *  Web   : http://www.geocities.com/dborca
+ */
+
+
+		.file	"blit.S"
+
+/*
+ * extern unsigned int vesa_gran_mask, vesa_gran_shift;
+ * extern int vl_video_selector;
+
+ * extern void *vl_current_draw_buffer;
+ * extern int vl_current_stride, vl_current_height;
+ * extern int vl_current_offset, vl_current_delta;
+ */
+
+		.text
+
+/* Desc: VESA bank switching routine (BIOS)
+ *
+ * In  : EBX=0, EDX = bank number
+ * Out : -
+ *
+ * Note: thrashes EAX
+ */
+		.p2align 5,,31
+_vesa_swbankBIOS:
+		movw	$0x4f05, %ax
+		int	$0x10
+		ret
+
+		.p2align 2,,3
+		.global	_vesa_swbank
+_vesa_swbank:	.long	_vesa_swbankBIOS
+
+/* Desc: void vesa_b_dump_virtual (void);
+ *
+ * In  : -
+ * Out : -
+ *
+ * Note: uses current draw buffer
+ */
+		.p2align 5,,31
+		.global	_vesa_b_dump_virtual
+_vesa_b_dump_virtual:
+		cld
+		pushl	%es
+		pushl	%ebx
+		pushl	%esi
+		pushl	%edi
+		pushl	%ebp
+		movl	_vl_video_selector, %es
+		movl	_vl_current_draw_buffer, %esi
+		movl	_vl_current_offset, %edi
+		movl	_vesa_gran_shift, %ecx
+		movl	_vesa_gran_mask, %ebp
+		movl	%edi, %edx
+		xorl	%ebx, %ebx
+		andl	%ebp, %edi
+		shrl	%cl, %edx
+		incl	%ebp
+		call	*_vesa_swbank
+		movl	_vl_current_stride, %ecx
+		movl	_vl_current_height, %eax
+		movl	_vl_current_delta, %ebx
+		shrl	$2, %ecx
+		.balign	4
+	0:
+		pushl	%ecx
+		.balign	4
+	1:
+		cmpl	%ebp, %edi
+		jb	2f
+		pushl	%eax
+		pushl	%ebx
+		incl	%edx
+		xorl	%ebx, %ebx
+		call	*_vesa_swbank
+		popl	%ebx
+		popl	%eax
+		subl	%ebp, %edi
+		.balign	4
+	2:
+		movsl
+		decl	%ecx
+		jnz	1b
+		popl	%ecx
+		addl	%ebx, %edi
+		decl	%eax
+		jnz	0b
+		popl	%ebp
+		popl	%edi
+		popl	%esi
+		popl	%ebx
+		popl	%es
+		ret
+
+/* Desc: void vesa_l_dump_virtual (void);
+ *
+ * In  : -
+ * Out : -
+ *
+ * Note: uses current draw buffer
+ */
+		.p2align 5,,31
+		.global	_vesa_l_dump_virtual
+_vesa_l_dump_virtual:
+		cld
+		pushl	%es
+		pushl	%esi
+		pushl	%edi
+		movl	_vl_video_selector, %es
+		movl	_vl_current_draw_buffer, %esi
+		movl	_vl_current_offset, %edi
+		movl	_vl_current_stride, %ecx
+		movl	_vl_current_height, %edx
+		movl	_vl_current_delta, %eax
+		shrl	$2, %ecx
+		.balign	4
+	0:
+		pushl	%ecx
+		rep;	movsl
+		popl	%ecx
+		addl	%eax, %edi
+		decl	%edx
+		jnz	0b
+		popl	%edi
+		popl	%esi
+		popl	%es
+		ret
+
+/* Desc: void vesa_l_dump_virtual_mmx (void);
+ *
+ * In  : -
+ * Out : -
+ *
+ * Note: uses current draw buffer
+ */
+		.p2align 5,,31
+		.global	_vesa_l_dump_virtual_mmx
+_vesa_l_dump_virtual_mmx:
+#ifdef USE_MMX_ASM
+		pushl	%esi
+		pushl	%edi
+		movl	_vl_video_selector, %fs
+		movl	_vl_current_draw_buffer, %esi
+		movl	_vl_current_offset, %edi
+		movl	_vl_current_stride, %ecx
+		movl	_vl_current_height, %edx
+		movl	_vl_current_delta, %eax
+		shrl	$3, %ecx
+		.balign	4
+	0:
+		pushl	%ecx
+		.balign	4
+	1:
+		movq	(%esi), %mm0
+		addl	$8, %esi
+		movq	%mm0, %fs:(%edi)
+		addl	$8, %edi
+		decl	%ecx
+		jnz	1b
+		popl	%ecx
+		addl	%eax, %edi
+		decl	%edx
+		jnz	0b
+		popl	%edi
+		popl	%esi
+		emms
+#endif
+		ret
diff --git a/src/mesa/drivers/dos/dmesa.c b/src/mesa/drivers/dos/dmesa.c
index a389e3d339..9ec0036176 100644
--- a/src/mesa/drivers/dos/dmesa.c
+++ b/src/mesa/drivers/dos/dmesa.c
@@ -1,1685 +1,1736 @@
-/*

- * Mesa 3-D graphics library

- * Version:  5.0.1

- * 

- * Copyright (C) 1999-2003  Brian Paul   All Rights Reserved.

- * 

- * Permission is hereby granted, free of charge, to any person obtaining a

- * copy of this software and associated documentation files (the "Software"),

- * to deal in the Software without restriction, including without limitation

- * the rights to use, copy, modify, merge, publish, distribute, sublicense,

- * and/or sell copies of the Software, and to permit persons to whom the

- * Software is furnished to do so, subject to the following conditions:

- * 

- * The above copyright notice and this permission notice shall be included

- * in all copies or substantial portions of the Software.

- * 

- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS

- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL

- * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN

- * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN

- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

- */

-

-/*

- * DOS/DJGPP device driver v1.3 for Mesa

- *

- *  Copyright (c) 2003 - Borca Daniel

- *  Email : dborca@yahoo.com

- *  Web   : http://www.geocities.com/dborca

- */

-

-

-#ifndef FX

-#include "glheader.h"

-#include "context.h"

-#include "extensions.h"

-#include "macros.h"

-#include "matrix.h"

-#include "mmath.h"

-#include "texformat.h"

-#include "texstore.h"

-#include "array_cache/acache.h"

-#include "swrast/s_context.h"

-#include "swrast/s_depth.h"

-#include "swrast/s_lines.h"

-#include "swrast/s_triangle.h"

-#include "swrast/s_trispan.h"

-#include "swrast/swrast.h"

-#include "swrast_setup/swrast_setup.h"

-#include "tnl/tnl.h"

-#include "tnl/t_context.h"

-#include "tnl/t_pipeline.h"

-#ifndef MATROX

-#include "video.h"

-#else  /* MATROX */

-#include "mga/mga.h"

-#endif /* MATROX */

-#else  /* FX */

-#include "../FX/fxdrv.h"

-#endif /* FX */

-

-#include "GL/dmesa.h"

-

-

-

-/*

- * In C++ terms, this class derives from the GLvisual class.

- * Add system-specific fields to it.

- */

-struct dmesa_visual {

-   GLvisual gl_visual;

-   GLboolean db_flag;           /* double buffered? */

-   GLboolean rgb_flag;          /* RGB mode? */

-   GLuint depth;                /* bits per pixel (1, 8, 24, etc) */

-#ifdef MATROX

-   int stride_in_pixels;

-#endif

-   int zbuffer;                 /* Z=buffer: 0=no, 1=SW, -1=HW */

-};

-

-/*

- * In C++ terms, this class derives from the GLframebuffer class.

- * Add system-specific fields to it.

- */

-struct dmesa_buffer {

-   GLframebuffer gl_buffer;     /* The depth, stencil, accum, etc buffers */

-   void *the_window;            /* your window handle, etc */

-

-   int xpos, ypos;              /* position */

-   int width, height;           /* size in pixels */

-};

-

-/*

- * In C++ terms, this class derives from the GLcontext class.

- * Add system-specific fields to it.

- */

-struct dmesa_context {

-   GLcontext gl_ctx;            /* the core library context */

-   DMesaVisual visual;

-   DMesaBuffer Buffer;

-   GLuint ClearColor;

-   GLuint ClearIndex;

-   /* etc... */

-};

-

-

-

-#ifndef FX

-/****************************************************************************

- * Read/Write pixels

- ***************************************************************************/

-#define FLIP(y)  (dmesa->Buffer->height - (y) - 1)

-#define FLIP2(y) (_b_ - (y))

-

-

-#ifndef MATROX

-#define DSTRIDE dmesa->Buffer->width

-#else

-#define DSTRIDE dmesa->visual->stride_in_pixels

-#define vl_putpixel mga_putpixel

-#define vl_mixrgba  mga_mixrgb

-#define vl_mixrgb   mga_mixrgb

-#define vl_getrgba  mga_getrgba

-#define vl_setz     mga_setz

-#define vl_getz     mga_getz

-#endif

-

-/****************************************************************************

- * RGB[A]

- ***************************************************************************/

-static void write_rgba_span (const GLcontext *ctx, GLuint n, GLint x, GLint y,

-                             const GLubyte rgba[][4], const GLubyte mask[])

-{

- const DMesaContext dmesa = (DMesaContext)ctx;

- GLuint i, offset;

-

-#ifndef MATROX

- offset = DSTRIDE * FLIP(y) + x;

- if (mask) {

-    /* draw some pixels */

-    for (i=0; i<n; i++, offset++) {

-        if (mask[i]) {

-           vl_putpixel(offset, vl_mixrgba(rgba[i]));

-        }

-    }

- } else {

-    /* draw all pixels */

-    for (i=0; i<n; i++, offset++) {

-        vl_putpixel(offset, vl_mixrgba(rgba[i]));

-    }

- }

-#else  /* MATROX */

- y = FLIP(y);

- if (mask) {

-    /* draw some pixels */

-    offset = 0;

-    for (i = 0; i < n; i++) {

-        if (mask[i]) {

-           ++offset;

-        } else {

-           if (offset != 0) {

-              mga_draw_span_rgb_tx32(x + i - offset, y, offset, (const unsigned long *)(&rgba[i-offset]));

-              offset = 0;

-           }

-        }

-    }

-    if (offset != 0) {

-       mga_draw_span_rgb_tx32(x + n - offset, y, offset, (const unsigned long *)(&rgba[n-offset]));

-    }

- } else {

-    /* draw all pixels */

-    mga_draw_span_rgb_tx32(x, y, n, (const unsigned long *)rgba);

- }

-#endif /* MATROX */

-}

-

-

-

-static void write_rgb_span (const GLcontext *ctx, GLuint n, GLint x, GLint y,

-                            const GLubyte rgb[][3], const GLubyte mask[])

-{

- const DMesaContext dmesa = (DMesaContext)ctx;

- GLuint i, offset;

-

- offset = DSTRIDE * FLIP(y) + x;

- if (mask) {

-    /* draw some pixels */

-    for (i=0; i<n; i++, offset++) {

-        if (mask[i]) {

-           vl_putpixel(offset, vl_mixrgb(rgb[i]));

-        }

-    }

- } else {

-    /* draw all pixels */

-    for (i=0; i<n; i++, offset++) {

-        vl_putpixel(offset, vl_mixrgb(rgb[i]));

-    }

- }

-}

-

-

-

-static void write_mono_rgba_span (const GLcontext *ctx,

-                                  GLuint n, GLint x, GLint y,

-                                  const GLchan color[4], const GLubyte mask[])

-{

- const DMesaContext dmesa = (DMesaContext)ctx;

- GLuint i, offset, rgba = vl_mixrgba(color);

-

- offset = DSTRIDE * FLIP(y) + x;

- if (mask) {

-    /* draw some pixels */

-    for (i=0; i<n; i++, offset++) {

-        if (mask[i]) {

-           vl_putpixel(offset, rgba);

-        }

-    }

- } else {

-    /* draw all pixels */

-    for (i=0; i<n; i++, offset++) {

-        vl_putpixel(offset, rgba);

-    }

- }

-}

-

-

-

-static void read_rgba_span (const GLcontext *ctx, GLuint n, GLint x, GLint y,

-                            GLubyte rgba[][4])

-{

- const DMesaContext dmesa = (DMesaContext)ctx;

- GLuint i, offset;

-

- offset = DSTRIDE * FLIP(y) + x;

- /* read all pixels */

- for (i=0; i<n; i++, offset++) {

-     vl_getrgba(offset, rgba[i]);

- }

-}

-

-

-

-static void write_rgba_pixels (const GLcontext *ctx,

-                               GLuint n, const GLint x[], const GLint y[],

-                               const GLubyte rgba[][4], const GLubyte mask[])

-{

- const DMesaContext dmesa = (DMesaContext)ctx;

- GLuint i, _w_ = DSTRIDE, _b_ = dmesa->Buffer->height - 1;

-

- if (mask) {

-    /* draw some pixels */

-    for (i=0; i<n; i++) {

-        if (mask[i]) {

-           vl_putpixel(FLIP2(y[i])*_w_ + x[i], vl_mixrgba(rgba[i]));

-        }

-    }

- } else {

-    /* draw all pixels */

-    for (i=0; i<n; i++) {

-        vl_putpixel(FLIP2(y[i])*_w_ + x[i], vl_mixrgba(rgba[i]));

-    }

- }

-}

-

-

-

-static void write_mono_rgba_pixels (const GLcontext *ctx,

-                                    GLuint n, const GLint x[], const GLint y[],

-                                    const GLchan color[4], const GLubyte mask[])

-{

- const DMesaContext dmesa = (DMesaContext)ctx;

- GLuint i, _w_ = DSTRIDE, _b_ = dmesa->Buffer->height - 1, rgba = vl_mixrgba(color);

-

- if (mask) {

-    /* draw some pixels */

-    for (i=0; i<n; i++) {

-        if (mask[i]) {

-           vl_putpixel(FLIP2(y[i])*_w_ + x[i], rgba);

-        }

-    }

- } else {

-    /* draw all pixels */

-    for (i=0; i<n; i++) {

-        vl_putpixel(FLIP2(y[i])*_w_ + x[i], rgba);

-    }

- }

-}

-

-

-

-static void read_rgba_pixels (const GLcontext *ctx,

-                              GLuint n, const GLint x[], const GLint y[],

-                              GLubyte rgba[][4], const GLubyte mask[])

-{

- const DMesaContext dmesa = (DMesaContext)ctx;

- GLuint i, _w_ = DSTRIDE, _b_ = dmesa->Buffer->height - 1;

-

- if (mask) {

-    /* read some pixels */

-    for (i=0; i<n; i++) {

-        if (mask[i]) {

-           vl_getrgba(FLIP2(y[i])*_w_ + x[i], rgba[i]);

-        }

-    }

- } else {

-    /* read all pixels */

-    for (i=0; i<n; i++) {

-        vl_getrgba(FLIP2(y[i])*_w_ + x[i], rgba[i]);

-    }

- }

-}

-

-

-

-/****************************************************************************

- * Index

- ***************************************************************************/

-#ifndef MATROX

-static void write_index_span (const GLcontext *ctx, GLuint n, GLint x, GLint y,

-                              const GLuint index[], const GLubyte mask[])

-{

- const DMesaContext dmesa = (DMesaContext)ctx;

- GLuint i, offset;

-

- offset = DSTRIDE * FLIP(y) + x;

- if (mask) {

-    /* draw some pixels */

-    for (i=0; i<n; i++, offset++) {

-        if (mask[i]) {

-           vl_putpixel(offset, index[i]);

-        }

-    }

- } else {

-    /* draw all pixels */

-    for (i=0; i<n; i++, offset++) {

-        vl_putpixel(offset, index[i]);

-    }

- }

-}

-

-

-

-static void write_index8_span (const GLcontext *ctx, GLuint n, GLint x, GLint y,

-                               const GLubyte index[], const GLubyte mask[])

-{

- const DMesaContext dmesa = (DMesaContext)ctx;

- GLuint i, offset;

-

- offset = DSTRIDE * FLIP(y) + x;

- if (mask) {

-    /* draw some pixels */

-    for (i=0; i<n; i++, offset++) {

-        if (mask[i]) {

-           vl_putpixel(offset, index[i]);

-        }

-    }

- } else {

-    /* draw all pixels */

-    for (i=0; i<n; i++, offset++) {

-        vl_putpixel(offset, index[i]);

-    }

- }

-}

-

-

-

-static void write_mono_index_span (const GLcontext *ctx,

-                                   GLuint n, GLint x, GLint y,

-                                   GLuint colorIndex, const GLubyte mask[])

-{

- const DMesaContext dmesa = (DMesaContext)ctx;

- GLuint i, offset;

-

- offset = DSTRIDE * FLIP(y) + x;

- if (mask) {

-    /* draw some pixels */

-    for (i=0; i<n; i++, offset++) {

-        if (mask[i]) {

-           vl_putpixel(offset, colorIndex);

-        }

-    }

- } else {

-    /* draw all pixels */

-    for (i=0; i<n; i++, offset++) {

-        vl_putpixel(offset, colorIndex);

-    }

- }

-}

-

-

-

-static void read_index_span (const GLcontext *ctx, GLuint n, GLint x, GLint y,

-                             GLuint index[])

-{

- const DMesaContext dmesa = (DMesaContext)ctx;

- GLuint i, offset;

-

- offset = DSTRIDE * FLIP(y) + x;

- /* read all pixels */

- for (i=0; i<n; i++, offset++) {

-     index[i] = vl_getpixel(offset);

- }

-}

-

-

-

-static void write_index_pixels (const GLcontext *ctx,

-                                GLuint n, const GLint x[], const GLint y[],

-                                const GLuint index[], const GLubyte mask[])

-{

- const DMesaContext dmesa = (DMesaContext)ctx;

- GLuint i, _w_ = DSTRIDE, _b_ = dmesa->Buffer->height - 1;

-

- if (mask) {

-    /* draw some pixels */

-    for (i=0; i<n; i++) {

-        if (mask[i]) {

-           vl_putpixel(FLIP2(y[i])*_w_ + x[i], index[i]);

-        }

-    }

- } else {

-    /* draw all pixels */

-    for (i=0; i<n; i++) {

-        vl_putpixel(FLIP2(y[i])*_w_ + x[i], index[i]);

-    }

- }

-}

-

-

-

-static void write_mono_index_pixels (const GLcontext *ctx,

-                                     GLuint n, const GLint x[], const GLint y[],

-                                     GLuint colorIndex, const GLubyte mask[])

-{

- const DMesaContext dmesa = (DMesaContext)ctx;

- GLuint i, _w_ = DSTRIDE, _b_ = dmesa->Buffer->height - 1;

-

- if (mask) {

-    /* draw some pixels */

-    for (i=0; i<n; i++) {

-        if (mask[i]) {

-           vl_putpixel(FLIP2(y[i])*_w_ + x[i], colorIndex);

-        }

-    }

- } else {

-    /* draw all pixels */

-    for (i=0; i<n; i++) {

-        vl_putpixel(FLIP2(y[i])*_w_ + x[i], colorIndex);

-    }

- }

-}

-

-

-

-static void read_index_pixels (const GLcontext *ctx,

-                               GLuint n, const GLint x[], const GLint y[],

-                               GLuint index[], const GLubyte mask[])

-{

- const DMesaContext dmesa = (DMesaContext)ctx;

- GLuint i, _w_ = DSTRIDE, _b_ = dmesa->Buffer->height - 1;

-

- if (mask) {

-    /* read some pixels */

-    for (i=0; i<n; i++) {

-        if (mask[i]) {

-           index[i] = vl_getpixel(FLIP2(y[i])*_w_ + x[i]);

-        }

-    }

- } else {

-    /* read all pixels */

-    for (i=0; i<n; i++) {

-        index[i] = vl_getpixel(FLIP2(y[i])*_w_ + x[i]);

-    }

- }

-}

-#endif /* !MATROX */

-

-

-

-/****************************************************************************

- * Z-buffer

- ***************************************************************************/

-#ifdef MATROX

-static void write_depth_span (GLcontext *ctx, GLuint n, GLint x, GLint y,

-                              const GLdepth depth[], const GLubyte mask[])

-{

- const DMesaContext dmesa = (DMesaContext)ctx;

- GLuint i, offset;

-

- offset = DSTRIDE * FLIP(y) + x;

- if (mask) {

-    /* draw some values */

-    for (i=0; i<n; i++, offset++) {

-        if (mask[i]) {

-           vl_setz(offset, depth[i]);

-        }

-    }

- } else {

-    /* draw all values */

-    for (i=0; i<n; i++, offset++) {

-        vl_setz(offset, depth[i]);

-    }

- }

-}

-

-

-

-static void read_depth_span (GLcontext *ctx, GLuint n, GLint x, GLint y,

-                             GLdepth depth[])

-{

- const DMesaContext dmesa = (DMesaContext)ctx;

- GLuint i, offset;

-

- offset = DSTRIDE * FLIP(y) + x;

- /* read all values */

- for (i=0; i<n; i++, offset++) {

-     depth[i] = vl_getz(offset);

- }

-}

-

-

-

-static void write_depth_pixels (GLcontext *ctx, GLuint n,

-                                const GLint x[], const GLint y[],

-                                const GLdepth depth[], const GLubyte mask[])

-{

- const DMesaContext dmesa = (DMesaContext)ctx;

- GLuint i, _w_ = DSTRIDE, _b_ = dmesa->Buffer->height - 1;

-

- if (mask) {

-    /* draw some values */

-    for (i=0; i<n; i++) {

-        if (mask[i]) {

-           vl_setz(FLIP2(y[i])*_w_ + x[i], depth[i]);

-        }

-    }

- } else {

-    /* draw all values */

-    for (i=0; i<n; i++) {

-        vl_setz(FLIP2(y[i])*_w_ + x[i], depth[i]);

-    }

- }

-}

-

-

-

-static void read_depth_pixels (GLcontext *ctx, GLuint n,

-                               const GLint x[], const GLint y[],

-                               GLdepth depth[])

-{

- const DMesaContext dmesa = (DMesaContext)ctx;

- GLuint i, _w_ = DSTRIDE, _b_ = dmesa->Buffer->height - 1;

-

- /* read all values */

- for (i=0; i<n; i++) {

-     depth[i] = vl_getz(FLIP2(y[i])*_w_ + x[i]);

- }

-}

-#endif /* MATROX */

-

-

-

-/****************************************************************************

- * Optimized triangle rendering

- ***************************************************************************/

-

-/*

- * NON-depth-buffered flat triangle.

- */

-static void tri_rgb_flat (GLcontext *ctx,

-                          const SWvertex *v0,

-                          const SWvertex *v1,

-                          const SWvertex *v2)

-{

- const DMesaContext dmesa = (DMesaContext)ctx;

- GLuint _b_ = dmesa->Buffer->height - 1;

-#ifndef MATROX

- GLuint _w_ = dmesa->Buffer->width;

-

-#define SETUP_CODE GLuint rgb = vl_mixrgb(v2->color);

-

-#define RENDER_SPAN(span) \

- GLuint i, offset = FLIP2(span.y)*_w_ + span.x;	\

- for (i = 0; i < span.end; i++, offset++) {	\

-     vl_putpixel(offset, rgb);			\

- }

-

-#include "swrast/s_tritemp.h"

-#else  /* MATROX */

- MGAvertex m0, m1, m2;

- m0.win[0] = v0->win[0];

- m0.win[1] = FLIP2(v0->win[1]);

- m1.win[0] = v1->win[0];

- m1.win[1] = FLIP2(v1->win[1]);

- m2.win[0] = v2->win[0];

- m2.win[1] = FLIP2(v2->win[1]);

- *(unsigned long *)m2.color = *(unsigned long *)v2->color;

- mga_draw_tri_rgb_flat((int)SWRAST_CONTEXT(ctx)->_backface_sign, &m0, &m1, &m2);

-#endif /* MATROX */

-}

-

-

-

-/*

- * Z-less flat triangle.

- */

-static void tri_rgb_flat_zless (GLcontext *ctx,

-                                const SWvertex *v0,

-                                const SWvertex *v1,

-                                const SWvertex *v2)

-{

- const DMesaContext dmesa = (DMesaContext)ctx;

- GLuint _b_ = dmesa->Buffer->height - 1;

-#ifndef MATROX

- GLuint _w_ = dmesa->Buffer->width;

-

-#define INTERP_Z 1

-#define DEPTH_TYPE DEFAULT_SOFTWARE_DEPTH_TYPE

-#define SETUP_CODE GLuint rgb = vl_mixrgb(v2->color);

-

-#define RENDER_SPAN(span) \

- GLuint i, offset = FLIP2(span.y)*_w_ + span.x;	\

- for (i = 0; i < span.end; i++, offset++) {	\

-     const DEPTH_TYPE z = FixedToDepth(span.z);	\

-     if (z < zRow[i]) {				\

-        vl_putpixel(offset, rgb);		\

-        zRow[i] = z;				\

-     }						\

-     span.z += span.zStep;			\

- }

-

-#include "swrast/s_tritemp.h"

-#else  /* MATROX */

- MGAvertex m0, m1, m2;

- m0.win[0] = v0->win[0];

- m0.win[1] = FLIP2(v0->win[1]);

- m0.win[2] = v0->win[2];

- m1.win[0] = v1->win[0];

- m1.win[1] = FLIP2(v1->win[1]);

- m1.win[2] = v1->win[2];

- m2.win[0] = v2->win[0];

- m2.win[1] = FLIP2(v2->win[1]);

- m2.win[2] = v2->win[2];

- *(unsigned long *)m2.color = *(unsigned long *)v2->color;

- mga_draw_tri_rgb_flat_zless((int)SWRAST_CONTEXT(ctx)->_backface_sign, &m0, &m1, &m2);

-#endif /* MATROX */

-}

-

-

-

-/*

- * NON-depth-buffered iterated triangle.

- */

-static void tri_rgb_iter (GLcontext *ctx,

-                          const SWvertex *v0,

-                          const SWvertex *v1,

-                          const SWvertex *v2)

-{

- const DMesaContext dmesa = (DMesaContext)ctx;

- GLuint _b_ = dmesa->Buffer->height - 1;

-#ifndef MATROX

- GLuint _w_ = dmesa->Buffer->width;

-

-#define INTERP_RGB 1

-#define RENDER_SPAN(span) \

- GLuint i, offset = FLIP2(span.y)*_w_ + span.x;				\

- for (i = 0; i < span.end; i++, offset++) {				\

-     vl_putpixel(offset, vl_mixfix(span.red, span.green, span.blue));	\

-     span.red += span.redStep;						\

-     span.green += span.greenStep;					\

-     span.blue += span.blueStep;					\

- }

-

-#include "swrast/s_tritemp.h"

-#else  /* MATROX */

- MGAvertex m0, m1, m2;

- m0.win[0] = v0->win[0];

- m0.win[1] = FLIP2(v0->win[1]);

- m1.win[0] = v1->win[0];

- m1.win[1] = FLIP2(v1->win[1]);

- m2.win[0] = v2->win[0];

- m2.win[1] = FLIP2(v2->win[1]);

- *(unsigned long *)m0.color = *(unsigned long *)v0->color;

- *(unsigned long *)m1.color = *(unsigned long *)v1->color;

- *(unsigned long *)m2.color = *(unsigned long *)v2->color;

- mga_draw_tri_rgb_iter((int)SWRAST_CONTEXT(ctx)->_backface_sign, &m0, &m1, &m2);

-#endif /* MATROX */

-}

-

-

-

-/*

- * Z-less iterated triangle.

- */

-static void tri_rgb_iter_zless (GLcontext *ctx,

-                                const SWvertex *v0,

-                                const SWvertex *v1,

-                                const SWvertex *v2)

-{

- const DMesaContext dmesa = (DMesaContext)ctx;

- GLuint _b_ = dmesa->Buffer->height - 1;

-#ifndef MATROX

- GLuint _w_ = dmesa->Buffer->width;

-

-#define INTERP_Z 1

-#define DEPTH_TYPE DEFAULT_SOFTWARE_DEPTH_TYPE

-#define INTERP_RGB 1

-

-#define RENDER_SPAN(span) \

- GLuint i, offset = FLIP2(span.y)*_w_ + span.x;				\

- for (i = 0; i < span.end; i++, offset++) {				\

-     const DEPTH_TYPE z = FixedToDepth(span.z);				\

-     if (z < zRow[i]) {							\

-        vl_putpixel(offset, vl_mixfix(span.red, span.green, span.blue));\

-        zRow[i] = z;							\

-     }									\

-     span.red += span.redStep;						\

-     span.green += span.greenStep;					\

-     span.blue += span.blueStep;					\

-     span.z += span.zStep;						\

- }

-

-#include "swrast/s_tritemp.h"

-#else  /* MATROX */

- MGAvertex m0, m1, m2;

- m0.win[0] = v0->win[0];

- m0.win[1] = FLIP2(v0->win[1]);

- m0.win[2] = v0->win[2];

- m1.win[0] = v1->win[0];

- m1.win[1] = FLIP2(v1->win[1]);

- m1.win[2] = v1->win[2];

- m2.win[0] = v2->win[0];

- m2.win[1] = FLIP2(v2->win[1]);

- m2.win[2] = v2->win[2];

- *(unsigned long *)m0.color = *(unsigned long *)v0->color;

- *(unsigned long *)m1.color = *(unsigned long *)v1->color;

- *(unsigned long *)m2.color = *(unsigned long *)v2->color;

- mga_draw_tri_rgb_iter_zless((int)SWRAST_CONTEXT(ctx)->_backface_sign, &m0, &m1, &m2);

-#endif /* MATROX */

-}

-

-

-

-/*

- * Analyze context state to see if we can provide a fast triangle function

- * Otherwise, return NULL.

- */

-static swrast_tri_func dmesa_choose_tri_function (GLcontext *ctx)

-{

- const SWcontext *swrast = SWRAST_CONTEXT(ctx);

-

- if ((ctx->RenderMode != GL_RENDER)

-     || (ctx->Polygon.SmoothFlag)

-     || (ctx->Polygon.StippleFlag)

-     || (ctx->Texture._EnabledUnits)

-     || (swrast->_RasterMask & MULTI_DRAW_BIT)

-     || (ctx->Polygon.CullFlag && ctx->Polygon.CullFaceMode == GL_FRONT_AND_BACK)) {

-    return (swrast_tri_func)NULL;

- }

-

- if (swrast->_RasterMask==DEPTH_BIT

-     && ctx->Depth.Func==GL_LESS

-     && ctx->Depth.Mask==GL_TRUE

-     && ctx->Visual.depthBits == DEFAULT_SOFTWARE_DEPTH_BITS) {

-    return (ctx->Light.ShadeModel==GL_SMOOTH) ? tri_rgb_iter_zless : tri_rgb_flat_zless;

- }

-

- if (swrast->_RasterMask==0) { /* no depth test */

-    return (ctx->Light.ShadeModel==GL_SMOOTH) ? tri_rgb_iter : tri_rgb_flat;

- }

-

- return (swrast_tri_func)NULL;

-}

-

-

-

-/* Override for the swrast triangle-selection function.  Try to use one

- * of our internal triangle functions, otherwise fall back to the

- * standard swrast functions.

- */

-static void dmesa_choose_tri (GLcontext *ctx)

-{

- SWcontext *swrast = SWRAST_CONTEXT(ctx);

-

- if (!(swrast->Triangle=dmesa_choose_tri_function(ctx)))

-    _swrast_choose_triangle(ctx);

-}

-

-

-

-/****************************************************************************

- * Optimized line rendering

- ***************************************************************************/

-

-#ifdef MATROX

-static __inline void matrox_line_clip_hack (GLcontext *ctx, int _b_, MGAvertex *m0, const SWvertex *vert0, MGAvertex *m1, const SWvertex *vert1)

-{

- int x0 = vert0->win[0];

- int y0 = vert0->win[1];

- int x1 = vert1->win[0];

- int y1 = vert1->win[1];

- /* s_linetemp.h { */

- GLint w = ctx->DrawBuffer->Width;

- GLint h = ctx->DrawBuffer->Height;

- if ((x0==w) | (x1==w)) {

-    if ((x0==w) & (x1==w))

-       return;

-    x0 -= x0==w;

-    x1 -= x1==w;

- }

- if ((y0==h) | (y1==h)) {

-    if ((y0==h) & (y1==h))

-       return;

-    y0 -= y0==h;

-    y1 -= y1==h;

- }

- /* } s_linetemp.h */

- m0->win[0] = x0;

- m0->win[1] = FLIP2(y0);

- m1->win[0] = x1;

- m1->win[1] = FLIP2(y1);

-}

-#endif

-

-/*

- * NON-depth-buffered flat line.

- */

-static void line_rgb_flat (GLcontext *ctx,

-                           const SWvertex *vert0,

-                           const SWvertex *vert1)

-{

- const DMesaContext dmesa = (DMesaContext)ctx;

- GLuint _b_ = dmesa->Buffer->height - 1;

-#ifndef MATROX

- GLuint _w_ = dmesa->Buffer->width;

- GLuint rgb = vl_mixrgb(vert1->color);

-

-#define INTERP_XY 1

-#define CLIP_HACK 1

-#define PLOT(X,Y) vl_putpixel(FLIP2(Y) * _w_ + X, rgb);

-

-#include "swrast/s_linetemp.h"

-#else

- MGAvertex m0, m1;

- matrox_line_clip_hack(ctx, _b_, &m0, vert0, &m1, vert1);

- *(unsigned long *)m1.color = *(unsigned long *)vert1->color;

- mga_draw_line_rgb_flat(&m0, &m1);

-#endif

-}

-

-

-

-/*

- * Z-less flat line.

- */

-static void line_rgb_flat_zless (GLcontext *ctx,

-                                 const SWvertex *vert0,

-                                 const SWvertex *vert1)

-{

- const DMesaContext dmesa = (DMesaContext)ctx;

- GLuint _b_ = dmesa->Buffer->height - 1;

-#ifndef MATROX

- GLuint _w_ = dmesa->Buffer->width;

- GLuint rgb = vl_mixrgb(vert1->color);

-

-#define INTERP_XY 1

-#define INTERP_Z 1

-#define DEPTH_TYPE DEFAULT_SOFTWARE_DEPTH_TYPE

-#define CLIP_HACK 1

-#define PLOT(X,Y) \

- if (Z < *zPtr) {				\

-    *zPtr = Z;					\

-    vl_putpixel(FLIP2(Y) * _w_ + X, rgb);	\

- }

-

-#include "swrast/s_linetemp.h"

-#else

- MGAvertex m0, m1;

- matrox_line_clip_hack(ctx, _b_, &m0, vert0, &m1, vert1);

- m0.win[2] = vert0->win[2];

- m1.win[2] = vert1->win[2];

- *(unsigned long *)m1.color = *(unsigned long *)vert1->color;

- mga_draw_line_rgb_flat_zless(&m0, &m1);

-#endif

-}

-

-

-

-#ifndef MATROX

-#define line_rgb_iter NULL

-#define line_rgb_iter_zless NULL

-#else  /* MATROX */

-/*

- * NON-depth-buffered iterated line.

- */

-static void line_rgb_iter (GLcontext *ctx,

-                           const SWvertex *vert0,

-                           const SWvertex *vert1)

-{

- const DMesaContext dmesa = (DMesaContext)ctx;

- GLuint _b_ = dmesa->Buffer->height - 1;

- MGAvertex m0, m1;

- matrox_line_clip_hack(ctx, _b_, &m0, vert0, &m1, vert1);

- *(unsigned long *)m0.color = *(unsigned long *)vert0->color;

- *(unsigned long *)m1.color = *(unsigned long *)vert1->color;

- mga_draw_line_rgb_iter(&m0, &m1);

-}

-

-

-

-/*

- * Z-less iterated line.

- */

-static void line_rgb_iter_zless (GLcontext *ctx,

-                                 const SWvertex *vert0,

-                                 const SWvertex *vert1)

-{

- const DMesaContext dmesa = (DMesaContext)ctx;

- GLuint _b_ = dmesa->Buffer->height - 1;

- MGAvertex m0, m1;

- matrox_line_clip_hack(ctx, _b_, &m0, vert0, &m1, vert1);

- m0.win[2] = vert0->win[2];

- m1.win[2] = vert1->win[2];

- *(unsigned long *)m0.color = *(unsigned long *)vert0->color;

- *(unsigned long *)m1.color = *(unsigned long *)vert1->color;

- mga_draw_line_rgb_iter_zless(&m0, &m1);

-}

-#endif /* MATROX */

-

-

-

-/*

- * Analyze context state to see if we can provide a fast line function

- * Otherwise, return NULL.

- */

-static swrast_line_func dmesa_choose_line_function (GLcontext *ctx)

-{

- const SWcontext *swrast = SWRAST_CONTEXT(ctx);

-

- if ((ctx->RenderMode != GL_RENDER)

-     || (ctx->Line.SmoothFlag)

-     || (ctx->Texture._EnabledUnits)

-     || (ctx->Line.StippleFlag)

-     || (swrast->_RasterMask & MULTI_DRAW_BIT)

-     || (ctx->Line.Width!=1.0F)) {

-    return (swrast_line_func)NULL;

- }

-

- if (swrast->_RasterMask==DEPTH_BIT

-     && ctx->Depth.Func==GL_LESS

-     && ctx->Depth.Mask==GL_TRUE

-     && ctx->Visual.depthBits == DEFAULT_SOFTWARE_DEPTH_BITS) {

-    return (ctx->Light.ShadeModel==GL_SMOOTH) ? line_rgb_iter_zless : line_rgb_flat_zless;

- }

-

- if (swrast->_RasterMask==0) { /* no depth test */

-    return (ctx->Light.ShadeModel==GL_SMOOTH) ? line_rgb_iter : line_rgb_flat;

- }

-

- return (swrast_line_func)NULL;

-}

-

-

-

-/* Override for the swrast line-selection function.  Try to use one

- * of our internal line functions, otherwise fall back to the

- * standard swrast functions.

- */

-static void dmesa_choose_line (GLcontext *ctx)

-{

- SWcontext *swrast = SWRAST_CONTEXT(ctx);

-

- if (!(swrast->Line=dmesa_choose_line_function(ctx)))

-    _swrast_choose_line(ctx);

-}

-

-

-

-/****************************************************************************

- * Miscellaneous device driver funcs

- ***************************************************************************/

-

-static void clear_index (GLcontext *ctx, GLuint index)

-{

- ((DMesaContext)ctx)->ClearIndex = index;

-}

-

-static void clear_color (GLcontext *ctx, const GLfloat color[4])

-{

- GLubyte col[4];

- CLAMPED_FLOAT_TO_UBYTE(col[0], color[0]);

- CLAMPED_FLOAT_TO_UBYTE(col[1], color[1]);

- CLAMPED_FLOAT_TO_UBYTE(col[2], color[2]);

- CLAMPED_FLOAT_TO_UBYTE(col[3], color[3]);

- ((DMesaContext)ctx)->ClearColor = vl_mixrgba(col);

-}

-

-

-

-static void clear (GLcontext *ctx, GLbitfield mask, GLboolean all,

-                   GLint x, GLint y, GLint width, GLint height)

-{

- const DMesaContext c = (DMesaContext)ctx;

- const GLuint *colorMask = (GLuint *)&ctx->Color.ColorMask;

-

-/*

- * Clear the specified region of the buffers indicated by 'mask'

- * using the clear color or index as specified by one of the two

- * functions above.

- * If all==GL_TRUE, clear whole buffer, else just clear region defined

- * by x,y,width,height

- */

-

- /* we can't handle color or index masking */

- if ((*colorMask == 0xffffffff) && (ctx->Color.IndexMask == 0xffffffff)) {

-#ifndef MATROX

-    if (mask & DD_BACK_LEFT_BIT) {

-       int color = c->visual->rgb_flag ? c->ClearColor : c->ClearIndex;

-

-       if (all) {

-          vl_clear(color);

-       } else {

-          vl_rect(x, y, width, height, color);

-       }

-

-       mask &= ~DD_BACK_LEFT_BIT;

-    }

-#else  /* MATROX */

-    unsigned short z = -1;

-    int color = c->ClearColor;

-    if (mask & DD_DEPTH_BIT) {

-       z = ctx->Depth.Clear * 0xffff;

-    }

-    if (all) {

-       mga_clear(mask & DD_FRONT_LEFT_BIT,

-                 mask & DD_BACK_LEFT_BIT,

-                 mask & DD_DEPTH_BIT,

-                 0, 0, c->Buffer->width, c->Buffer->height,

-                 color, z);

-    } else {

-       mga_clear(mask & DD_FRONT_LEFT_BIT,

-                 mask & DD_BACK_LEFT_BIT,

-                 mask & DD_DEPTH_BIT,

-                 x, y, width, height,

-                 color, z);

-    }

-    mask &= ~(DD_FRONT_LEFT_BIT | DD_BACK_LEFT_BIT | DD_DEPTH_BIT);

-#endif /* MATROX */

- }

-

- if (mask) {

-    _swrast_Clear(ctx, mask, all, x, y, width, height);

- }

-}

-

-

-

-static void set_buffer (GLcontext *ctx, GLframebuffer *colorBuffer, GLuint bufferBit)

-{

- /*

-  * XXX todo - examine bufferBit and set read/write pointers

-  */

-}

-

-

-

-/*

- * Return the width and height of the current buffer.

- * If anything special has to been done when the buffer/window is

- * resized, do it now.

- */

-static void get_buffer_size (GLframebuffer *buffer, GLuint *width, GLuint *height)

-{

- DMesaBuffer b = (DMesaBuffer)buffer;

-

- *width  = b->width;

- *height = b->height;

-}

-

-

-

-static const GLubyte* get_string (GLcontext *ctx, GLenum name)

-{

- switch (name) {

-        case GL_RENDERER:

-             return (const GLubyte *)"Mesa DJGPP"

-                                     #ifdef FX

-                                     " (FX)"

-                                     #endif

-                                     #ifdef MATROX

-                                     " (MGA)"

-                                     #endif

-                                     "\0port (c) Borca Daniel mar-2003";

-        default:

-             return NULL;

- }

-}

-

-

-

-static void finish (GLcontext *ctx)

-{

- /*

-  * XXX todo - OPTIONAL FUNCTION: implements glFinish if possible

-  */

-}

-

-

-

-static void flush (GLcontext *ctx)

-{

- /*

-  * XXX todo - OPTIONAL FUNCTION: implements glFlush if possible

-  */

-}

-

-

-

-/****************************************************************************

- * State

- ***************************************************************************/

-#define DMESA_NEW_LINE   (_NEW_LINE | \

-                          _NEW_TEXTURE | \

-                          _NEW_LIGHT | \

-                          _NEW_DEPTH | \

-                          _NEW_RENDERMODE | \

-                          _SWRAST_NEW_RASTERMASK)

-

-#define DMESA_NEW_TRIANGLE (_NEW_POLYGON | \

-                            _NEW_TEXTURE | \

-                            _NEW_LIGHT | \

-                            _NEW_DEPTH | \

-                            _NEW_RENDERMODE | \

-                            _SWRAST_NEW_RASTERMASK)

-

-/* Extend the software rasterizer with our line and triangle

- * functions.

- */

-static void dmesa_register_swrast_functions (GLcontext *ctx)

-{

- SWcontext *swrast = SWRAST_CONTEXT(ctx);

-

- swrast->choose_line = dmesa_choose_line;

- swrast->choose_triangle = dmesa_choose_tri;

-

- swrast->invalidate_line |= DMESA_NEW_LINE;

- swrast->invalidate_triangle |= DMESA_NEW_TRIANGLE;

-}

-

-

-

-/* Setup pointers and other driver state that is constant for the life

- * of a context.

- */

-static void dmesa_init_pointers (GLcontext *ctx)

-{

- TNLcontext *tnl;

- struct swrast_device_driver *dd = _swrast_GetDeviceDriverReference(ctx);

-

- ctx->Driver.GetString = get_string;

- ctx->Driver.GetBufferSize = get_buffer_size;

- ctx->Driver.Flush = flush;

- ctx->Driver.Finish = finish;

-    

- /* Software rasterizer pixel paths:

-  */

- ctx->Driver.Accum = _swrast_Accum;

- ctx->Driver.Bitmap = _swrast_Bitmap;

- ctx->Driver.Clear = clear;

- ctx->Driver.ResizeBuffers = _swrast_alloc_buffers;

- ctx->Driver.CopyPixels = _swrast_CopyPixels;

- ctx->Driver.DrawPixels = _swrast_DrawPixels;

- ctx->Driver.ReadPixels = _swrast_ReadPixels;

- ctx->Driver.DrawBuffer = _swrast_DrawBuffer;

-

- /* Software texture functions:

-  */

- ctx->Driver.ChooseTextureFormat = _mesa_choose_tex_format;

- ctx->Driver.TexImage1D = _mesa_store_teximage1d;

- ctx->Driver.TexImage2D = _mesa_store_teximage2d;

- ctx->Driver.TexImage3D = _mesa_store_teximage3d;

- ctx->Driver.TexSubImage1D = _mesa_store_texsubimage1d;

- ctx->Driver.TexSubImage2D = _mesa_store_texsubimage2d;

- ctx->Driver.TexSubImage3D = _mesa_store_texsubimage3d;

- ctx->Driver.TestProxyTexImage = _mesa_test_proxy_teximage;

-

- ctx->Driver.CopyTexImage1D = _swrast_copy_teximage1d;

- ctx->Driver.CopyTexImage2D = _swrast_copy_teximage2d;

- ctx->Driver.CopyTexSubImage1D = _swrast_copy_texsubimage1d;

- ctx->Driver.CopyTexSubImage2D = _swrast_copy_texsubimage2d;

- ctx->Driver.CopyTexSubImage3D = _swrast_copy_texsubimage3d;

-

- ctx->Driver.CompressedTexImage1D = _mesa_store_compressed_teximage1d;

- ctx->Driver.CompressedTexImage2D = _mesa_store_compressed_teximage2d;

- ctx->Driver.CompressedTexImage3D = _mesa_store_compressed_teximage3d;

- ctx->Driver.CompressedTexSubImage1D = _mesa_store_compressed_texsubimage1d;

- ctx->Driver.CompressedTexSubImage2D = _mesa_store_compressed_texsubimage2d;

- ctx->Driver.CompressedTexSubImage3D = _mesa_store_compressed_texsubimage3d;

-

- /* Swrast hooks for imaging extensions:

-  */

- ctx->Driver.CopyColorTable = _swrast_CopyColorTable;

- ctx->Driver.CopyColorSubTable = _swrast_CopyColorSubTable;

- ctx->Driver.CopyConvolutionFilter1D = _swrast_CopyConvolutionFilter1D;

- ctx->Driver.CopyConvolutionFilter2D = _swrast_CopyConvolutionFilter2D;

-

- /* Statechange callbacks:

-  */

- ctx->Driver.ClearColor = clear_color;

- ctx->Driver.ClearIndex = clear_index;

-

- /* Initialize the TNL driver interface:

-  */

- tnl = TNL_CONTEXT(ctx);

- tnl->Driver.RunPipeline = _tnl_run_pipeline;

-

- dd->SetBuffer = set_buffer;

-   

- /* Install swsetup for tnl->Driver.Render.*:

-  */

- _swsetup_Wakeup(ctx);

-

- /* The span functions should be in `dmesa_update_state', but I'm

-  * pretty sure they will never change during the life of the Visual

-  */

-#ifdef MATROX

- if (((DMesaContext)ctx)->visual->zbuffer == -1) {

-    /* Depth span/pixel functions */

-    dd->WriteDepthSpan = write_depth_span;

-    dd->WriteDepthPixels = write_depth_pixels;

-    dd->ReadDepthSpan = read_depth_span;

-    dd->ReadDepthPixels = read_depth_pixels;

- }

-#endif

-

-#ifndef MATROX

- /* Index span/pixel functions */

- dd->WriteCI32Span = write_index_span;

- dd->WriteCI8Span = write_index8_span;

- dd->WriteMonoCISpan = write_mono_index_span;

- dd->WriteCI32Pixels = write_index_pixels;

- dd->WriteMonoCIPixels = write_mono_index_pixels;

- dd->ReadCI32Span = read_index_span;

- dd->ReadCI32Pixels = read_index_pixels;

-#endif

-

- /* RGB(A) span/pixel functions */

- dd->WriteRGBASpan = write_rgba_span;

- dd->WriteRGBSpan = write_rgb_span;

- dd->WriteMonoRGBASpan = write_mono_rgba_span;

- dd->WriteRGBAPixels = write_rgba_pixels;

- dd->WriteMonoRGBAPixels = write_mono_rgba_pixels;

- dd->ReadRGBASpan = read_rgba_span;

- dd->ReadRGBAPixels = read_rgba_pixels;

-}

-

-

-

-static void dmesa_update_state (GLcontext *ctx, GLuint new_state)

-{

- /* Propogate statechange information to swrast and swrast_setup

-  * modules. The DMesa driver has no internal GL-dependent state.

-  */

- _swrast_InvalidateState( ctx, new_state );

- _ac_InvalidateState( ctx, new_state );

- _tnl_InvalidateState( ctx, new_state );

- _swsetup_InvalidateState( ctx, new_state );

-}

-#endif /* FX */

-

-

-

-/****************************************************************************

- * DMesa Public API Functions

- ***************************************************************************/

-

-/*

- * The exact arguments to this function will depend on your window system

- */

-DMesaVisual DMesaCreateVisual (GLint width,

-                               GLint height,

-                               GLint colDepth,

-                               GLint refresh,

-                               GLboolean dbFlag,

-                               GLboolean rgbFlag,

-                               GLboolean alphaFlag,

-                               GLint depthSize,

-                               GLint stencilSize,

-                               GLint accumSize)

-{

-#ifndef FX

- DMesaVisual v;

- GLint redBits, greenBits, blueBits, alphaBits, indexBits;

-

-#ifndef MATROX

- if (!dbFlag) {

-    return NULL;

- }

-#else

- if (!rgbFlag) {

-    return NULL;

- }

-#endif

-

- alphaBits = 0;

-

- if (!rgbFlag) {

-    indexBits = 8;

-    redBits = 0;

-    greenBits = 0;

-    blueBits = 0;

- } else {

-    indexBits = 0;

-    switch (colDepth) {

-           case 8:

-                redBits = 8;

-                greenBits = 8;

-                blueBits = 8;

-                break;

-           case 15:

-                redBits = 5;

-                greenBits = 5;

-                blueBits = 5;

-                break;

-           case 16:

-                redBits = 5;

-                greenBits = 6;

-                blueBits = 5;

-                break;

-           case 32:

-                alphaBits = 8;

-           case 24:

-                redBits = 8;

-                greenBits = 8;

-                blueBits = 8;

-                break;

-           default:

-                return NULL;

-    }

- }

-

-#ifndef MATROX

- if ((colDepth=vl_video_init(width, height, colDepth, rgbFlag, refresh)) <= 0) {

-    return NULL;

- }

-#else

- if (mga_open(width, height, colDepth, dbFlag ? 2 : 1, depthSize == 16, refresh) < 0) {

-    return NULL;

- }

-#endif

-

- if (alphaFlag && (alphaBits==0)) {

-    alphaBits = 8;

- }

-

- if ((v=(DMesaVisual)CALLOC_STRUCT(dmesa_visual)) != NULL) {

-    /* Create core visual */

-    _mesa_initialize_visual((GLvisual *)v,

-                            rgbFlag,		/* rgb */

-                            dbFlag,

-                            GL_FALSE,		/* stereo */

-                            redBits,

-                            greenBits,

-                            blueBits,

-                            alphaBits,

-                            indexBits,		/* indexBits */

-                            depthSize,

-                            stencilSize,

-                            accumSize,		/* accumRed */

-                            accumSize,		/* accumGreen */

-                            accumSize,		/* accumBlue */

-                            alphaFlag?accumSize:0,	/* accumAlpha */

-                            1);			/* numSamples */

-

-    v->depth = colDepth;

-    v->db_flag = dbFlag;

-    v->rgb_flag = rgbFlag;

-

-    v->zbuffer = (depthSize > 0) ? 1 : 0;

-#ifdef MATROX

-    mga_get(MGA_GET_HPIXELS, &v->stride_in_pixels);

-    if (depthSize == 16) {

-       v->zbuffer = -1;

-    }

-#endif

- }

-

- return v;

-

-#else  /* FX */

-

- int i = 0, fx_attrib[32];

-

- if (!rgbFlag) {

-    return NULL;

- }

-

- if (dbFlag) fx_attrib[i++] = FXMESA_DOUBLEBUFFER;

- if (depthSize > 0) { fx_attrib[i++] = FXMESA_DEPTH_SIZE; fx_attrib[i++] = depthSize; }

- if (stencilSize > 0) { fx_attrib[i++] = FXMESA_STENCIL_SIZE; fx_attrib[i++] = stencilSize; }

- if (accumSize > 0) { fx_attrib[i++] = FXMESA_ACCUM_SIZE; fx_attrib[i++] = accumSize; }

- if (alphaFlag) { fx_attrib[i++] = FXMESA_ALPHA_SIZE; fx_attrib[i++] = 1; }

- fx_attrib[i] = FXMESA_NONE;

-

- return (DMesaVisual)fxMesaCreateBestContext(-1, width, height, fx_attrib);

-#endif /* FX */

-}

-

-

-

-void DMesaDestroyVisual (DMesaVisual v)

-{

-#ifndef FX

- _mesa_destroy_visual((GLvisual *)v);

-

-#ifndef MATROX

- vl_video_exit();

-#else

- mga_close(1, 1);

-#endif

-

-#else

- fxMesaDestroyContext((fxMesaContext)v);

-#endif

-}

-

-

-

-DMesaBuffer DMesaCreateBuffer (DMesaVisual visual,

-                               GLint xpos, GLint ypos,

-                               GLint width, GLint height)

-{

-#ifndef FX

- DMesaBuffer b;

-

- if ((b=(DMesaBuffer)CALLOC_STRUCT(dmesa_buffer)) != NULL) {

-    _mesa_initialize_framebuffer((GLframebuffer *)b,

-                                 (GLvisual *)visual,

-                                 visual->zbuffer == 1,

-                                 ((GLvisual *)visual)->stencilBits > 0,

-                                 ((GLvisual *)visual)->accumRedBits > 0,

-                                 ((GLvisual *)visual)->alphaBits > 0);

-    b->xpos = xpos;

-    b->ypos = ypos;

-    b->width = width;

-    b->height = height;

- }

-

- return b;

-#else

- return (DMesaBuffer)visual;

-#endif

-}

-

-

-

-void DMesaDestroyBuffer (DMesaBuffer b)

-{

-#ifndef FX

-#ifndef MATROX

- free(b->the_window);

-#endif

- _mesa_destroy_framebuffer((GLframebuffer *)b);

-#endif

-}

-

-

-

-DMesaContext DMesaCreateContext (DMesaVisual visual,

-                                 DMesaContext share)

-{

-#ifndef FX

- DMesaContext c;

- GLboolean direct = GL_FALSE;

-

- if ((c=(DMesaContext)CALLOC_STRUCT(dmesa_context)) != NULL) {

-    _mesa_initialize_context((GLcontext *)c,

-                             (GLvisual *)visual,

-                             (GLcontext *)share,

-                             (void *)c, direct);

-

-    _mesa_enable_sw_extensions((GLcontext *)c);

-    _mesa_enable_1_3_extensions((GLcontext *)c);

-    _mesa_enable_1_4_extensions((GLcontext *)c);

-

-    /* you probably have to do a bunch of other initializations here. */

-    c->visual = visual;

-

-    ((GLcontext *)c)->Driver.UpdateState = dmesa_update_state;

-

-    /* Initialize the software rasterizer and helper modules.

-     */

-    _swrast_CreateContext((GLcontext *)c);

-    _ac_CreateContext((GLcontext *)c);

-    _tnl_CreateContext((GLcontext *)c);

-    _swsetup_CreateContext((GLcontext *)c);

-    if (visual->rgb_flag) dmesa_register_swrast_functions((GLcontext *)c);

-    dmesa_init_pointers((GLcontext *)c);

- }

-

- return c;

-

-#else  /* FX */

- return (DMesaContext)visual;

-#endif /* FX */

-}

-

-

-

-void DMesaDestroyContext (DMesaContext c)

-{

-#ifndef FX

- if (c) {

-    _swsetup_DestroyContext((GLcontext *)c);

-    _swrast_DestroyContext((GLcontext *)c);

-    _tnl_DestroyContext((GLcontext *)c);

-    _ac_DestroyContext((GLcontext *)c);

-    _mesa_destroy_context((GLcontext *)c);

- }

-#endif

-}

-

-

-

-GLboolean DMesaMoveBuffer (GLint xpos, GLint ypos)

-{

-#if !defined(FX) && !defined(MATROX)

- GET_CURRENT_CONTEXT(ctx);

- DMesaBuffer b = ((DMesaContext)ctx)->Buffer;

-

- if (vl_sync_buffer(&b->the_window, xpos, ypos, b->width, b->height) != 0) {

-    return GL_FALSE;

- } else {

-    b->xpos = xpos;

-    b->ypos = ypos;

-    return GL_TRUE;

- }

-

-#else

- return GL_FALSE;

-#endif

-}

-

-

-

-GLboolean DMesaResizeBuffer (GLint width, GLint height)

-{

-#if !defined(FX) && !defined(MATROX)

- GET_CURRENT_CONTEXT(ctx);

- DMesaBuffer b = ((DMesaContext)ctx)->Buffer;

-

- if (vl_sync_buffer(&b->the_window, b->xpos, b->ypos, width, height) != 0) {

-    return GL_FALSE;

- } else {

-    b->width = width;

-    b->height = height;

-    return GL_TRUE;

- }

-

-#else

- return GL_FALSE;

-#endif

-}

-

-

-

-/*

- * Make the specified context and buffer the current one.

- */

-GLboolean DMesaMakeCurrent (DMesaContext c, DMesaBuffer b)

-{

-#ifndef FX

- if ((c != NULL) && (b != NULL)) {

-#ifndef MATROX

-    if (vl_sync_buffer(&b->the_window, b->xpos, b->ypos, b->width, b->height) != 0) {

-       return GL_FALSE;

-    }

-#endif

-

-    c->Buffer = b;

-

-    _mesa_make_current((GLcontext *)c, (GLframebuffer *)b);

-    if (((GLcontext *)c)->Viewport.Width == 0) {

-       /* initialize viewport to window size */

-       _mesa_Viewport(0, 0, b->width, b->height);

-    }

- } else {

-    /* Detach */

-    _mesa_make_current(NULL, NULL);

- }

-

-#else

- fxMesaMakeCurrent((fxMesaContext)c);

-#endif

-

- return GL_TRUE;

-}

-

-

-

-void DMesaSwapBuffers (DMesaBuffer b)

-{

- /* copy/swap back buffer to front if applicable */

-#ifndef FX

- GET_CURRENT_CONTEXT(ctx);

- _mesa_notifySwapBuffers(ctx);

-#ifndef MATROX

- vl_flip();

-#else

- if (((DMesaContext)ctx)->visual->db_flag) {

-    mga_swapbuffers(1);

- }

-#endif

-#else

- fxMesaSwapBuffers();

-#endif

-}

-

-

-

-void DMesaSetCI (int ndx, GLfloat red, GLfloat green, GLfloat blue)

-{

-#if !defined(FX) && !defined(MATROX)

- vl_setCI(ndx, red, green, blue);

-#endif

-}

-

-

-

-DMesaContext DMesaGetCurrentContext (void)

-{

-#ifndef FX

- GET_CURRENT_CONTEXT(ctx);

- return (DMesaContext)ctx;

-#else

- return (DMesaContext)fxMesaGetCurrentContext();

-#endif

-}

-

-

-

-int DMesaGetIntegerv (GLenum pname, GLint *params)

-{

-#ifndef FX

- GET_CURRENT_CONTEXT(ctx);

- const DMesaContext c = (DMesaContext)ctx;

-#else

- const fxMesaContext c = fxMesaGetCurrentContext();

-#endif

-

- if (c == NULL) {

-    return -1;

- }

-

- switch (pname) {

-        case DMESA_GET_SCREEN_SIZE:

-             #ifndef FX

-             #ifndef MATROX

-             vl_get(VL_GET_SCREEN_SIZE, params);

-             #else

-             mga_get(MGA_GET_SCREEN_SIZE, params);

-             #endif

-             #else

-             params[0] = c->screen_width;

-             params[1] = c->screen_height;

-             #endif

-             break;

-        case DMESA_GET_DRIVER_CAPS:

-             #ifndef FX

-             #ifndef MATROX

-             params[0] = DMESA_DRIVER_SWDB_BIT;

-             #else

-             params[0] = 0;

-             #endif

-             #else

-             params[0] = DMESA_DRIVER_LLWO_BIT;

-             #endif

-             break;

-        default:

-             return -1;

- }

-

- return 0;

-}

+/*
+ * Mesa 3-D graphics library
+ * Version:  5.0.1
+ * 
+ * Copyright (C) 1999-2003  Brian Paul   All Rights Reserved.
+ * 
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ * 
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/*
+ * DOS/DJGPP device driver v1.4 for Mesa
+ *
+ *  Copyright (c) 2003 - Borca Daniel
+ *  Email : dborca@yahoo.com
+ *  Web   : http://www.geocities.com/dborca
+ */
+
+
+#ifndef FX
+#include "glheader.h"
+#include "context.h"
+#include "extensions.h"
+#include "macros.h"
+#include "matrix.h"
+#include "mtypes.h"
+#include "texformat.h"
+#include "teximage.h"
+#include "texstore.h"
+#include "imports.h"
+#include "array_cache/acache.h"
+#include "swrast/s_context.h"
+#include "swrast/s_depth.h"
+#include "swrast/s_lines.h"
+#include "swrast/s_triangle.h"
+#include "swrast/swrast.h"
+#include "swrast_setup/swrast_setup.h"
+#include "tnl/tnl.h"
+#include "tnl/t_context.h"
+#include "tnl/t_pipeline.h"
+#ifndef MATROX
+#include "video.h"
+#else  /* MATROX */
+#include "mga/mga.h"
+#endif /* MATROX */
+#else  /* FX */
+#include "../glide/fxdrv.h"
+#endif /* FX */
+
+#include "GL/dmesa.h"
+
+
+
+/*
+ * In C++ terms, this class derives from the GLvisual class.
+ * Add system-specific fields to it.
+ */
+struct dmesa_visual {
+   GLvisual gl_visual;
+   GLboolean db_flag;           /* double buffered? */
+   GLboolean rgb_flag;          /* RGB mode? */
+   GLuint depth;                /* bits per pixel (1, 8, 24, etc) */
+#ifdef MATROX
+   int stride_in_pixels;
+#endif
+   int zbuffer;                 /* Z=buffer: 0=no, 1=SW, -1=HW */
+};
+
+/*
+ * In C++ terms, this class derives from the GLframebuffer class.
+ * Add system-specific fields to it.
+ */
+struct dmesa_buffer {
+   GLframebuffer gl_buffer;     /* The depth, stencil, accum, etc buffers */
+   void *the_window;            /* your window handle, etc */
+
+   int xpos, ypos;              /* position */
+   int width, height;           /* size in pixels */
+};
+
+/*
+ * In C++ terms, this class derives from the GLcontext class.
+ * Add system-specific fields to it.
+ */
+struct dmesa_context {
+   GLcontext gl_ctx;            /* the core library context */
+   DMesaVisual visual;
+   DMesaBuffer Buffer;
+   GLuint ClearColor;
+   GLuint ClearIndex;
+   /* etc... */
+};
+
+
+
+#ifndef FX
+/****************************************************************************
+ * Read/Write pixels
+ ***************************************************************************/
+#define FLIP(y)  (dmesa->Buffer->height - (y) - 1)
+#define FLIP2(y) (_b_ - (y))
+
+
+#ifndef MATROX
+#define DSTRIDE dmesa->Buffer->width
+#else
+#define DSTRIDE dmesa->visual->stride_in_pixels
+#define vl_putpixel mga_putpixel
+#define vl_mixrgba  mga_mixrgb
+#define vl_mixrgb   mga_mixrgb
+#define vl_getrgba  mga_getrgba
+#define vl_setz     mga_setz
+#define vl_getz     mga_getz
+#endif
+
+/****************************************************************************
+ * RGB[A]
+ ***************************************************************************/
+static void write_rgba_span (const GLcontext *ctx, GLuint n, GLint x, GLint y,
+                             const GLubyte rgba[][4], const GLubyte mask[])
+{
+ const DMesaContext dmesa = (DMesaContext)ctx;
+ GLuint i, offset;
+
+#ifndef MATROX
+ offset = DSTRIDE * FLIP(y) + x;
+ if (mask) {
+    /* draw some pixels */
+    for (i=0; i<n; i++, offset++) {
+        if (mask[i]) {
+           vl_putpixel(offset, vl_mixrgba(rgba[i]));
+        }
+    }
+ } else {
+    /* draw all pixels */
+    for (i=0; i<n; i++, offset++) {
+        vl_putpixel(offset, vl_mixrgba(rgba[i]));
+    }
+ }
+#else  /* MATROX */
+ y = FLIP(y);
+ if (mask) {
+    /* draw some pixels */
+    offset = 0;
+    for (i = 0; i < n; i++) {
+        if (mask[i]) {
+           ++offset;
+        } else {
+           if (offset != 0) {
+              mga_draw_span_rgb_tx32(x + i - offset, y, offset, (const unsigned long *)(&rgba[i-offset]));
+              offset = 0;
+           }
+        }
+    }
+    if (offset != 0) {
+       mga_draw_span_rgb_tx32(x + n - offset, y, offset, (const unsigned long *)(&rgba[n-offset]));
+    }
+ } else {
+    /* draw all pixels */
+    mga_draw_span_rgb_tx32(x, y, n, (const unsigned long *)rgba);
+ }
+#endif /* MATROX */
+}
+
+
+
+static void write_rgb_span (const GLcontext *ctx, GLuint n, GLint x, GLint y,
+                            const GLubyte rgb[][3], const GLubyte mask[])
+{
+ const DMesaContext dmesa = (DMesaContext)ctx;
+ GLuint i, offset;
+
+ offset = DSTRIDE * FLIP(y) + x;
+ if (mask) {
+    /* draw some pixels */
+    for (i=0; i<n; i++, offset++) {
+        if (mask[i]) {
+           vl_putpixel(offset, vl_mixrgb(rgb[i]));
+        }
+    }
+ } else {
+    /* draw all pixels */
+    for (i=0; i<n; i++, offset++) {
+        vl_putpixel(offset, vl_mixrgb(rgb[i]));
+    }
+ }
+}
+
+
+
+static void write_mono_rgba_span (const GLcontext *ctx,
+                                  GLuint n, GLint x, GLint y,
+                                  const GLchan color[4], const GLubyte mask[])
+{
+ const DMesaContext dmesa = (DMesaContext)ctx;
+ GLuint i, offset, rgba = vl_mixrgba(color);
+
+ offset = DSTRIDE * FLIP(y) + x;
+ if (mask) {
+    /* draw some pixels */
+    for (i=0; i<n; i++, offset++) {
+        if (mask[i]) {
+           vl_putpixel(offset, rgba);
+        }
+    }
+ } else {
+    /* draw all pixels */
+    for (i=0; i<n; i++, offset++) {
+        vl_putpixel(offset, rgba);
+    }
+ }
+}
+
+
+
+static void read_rgba_span (const GLcontext *ctx, GLuint n, GLint x, GLint y,
+                            GLubyte rgba[][4])
+{
+ const DMesaContext dmesa = (DMesaContext)ctx;
+ GLuint i, offset;
+
+ offset = DSTRIDE * FLIP(y) + x;
+ /* read all pixels */
+ for (i=0; i<n; i++, offset++) {
+     vl_getrgba(offset, rgba[i]);
+ }
+}
+
+
+
+static void write_rgba_pixels (const GLcontext *ctx,
+                               GLuint n, const GLint x[], const GLint y[],
+                               const GLubyte rgba[][4], const GLubyte mask[])
+{
+ const DMesaContext dmesa = (DMesaContext)ctx;
+ GLuint i, _w_ = DSTRIDE, _b_ = dmesa->Buffer->height - 1;
+
+ if (mask) {
+    /* draw some pixels */
+    for (i=0; i<n; i++) {
+        if (mask[i]) {
+           vl_putpixel(FLIP2(y[i])*_w_ + x[i], vl_mixrgba(rgba[i]));
+        }
+    }
+ } else {
+    /* draw all pixels */
+    for (i=0; i<n; i++) {
+        vl_putpixel(FLIP2(y[i])*_w_ + x[i], vl_mixrgba(rgba[i]));
+    }
+ }
+}
+
+
+
+static void write_mono_rgba_pixels (const GLcontext *ctx,
+                                    GLuint n, const GLint x[], const GLint y[],
+                                    const GLchan color[4], const GLubyte mask[])
+{
+ const DMesaContext dmesa = (DMesaContext)ctx;
+ GLuint i, _w_ = DSTRIDE, _b_ = dmesa->Buffer->height - 1, rgba = vl_mixrgba(color);
+
+ if (mask) {
+    /* draw some pixels */
+    for (i=0; i<n; i++) {
+        if (mask[i]) {
+           vl_putpixel(FLIP2(y[i])*_w_ + x[i], rgba);
+        }
+    }
+ } else {
+    /* draw all pixels */
+    for (i=0; i<n; i++) {
+        vl_putpixel(FLIP2(y[i])*_w_ + x[i], rgba);
+    }
+ }
+}
+
+
+
+static void read_rgba_pixels (const GLcontext *ctx,
+                              GLuint n, const GLint x[], const GLint y[],
+                              GLubyte rgba[][4], const GLubyte mask[])
+{
+ const DMesaContext dmesa = (DMesaContext)ctx;
+ GLuint i, _w_ = DSTRIDE, _b_ = dmesa->Buffer->height - 1;
+
+ if (mask) {
+    /* read some pixels */
+    for (i=0; i<n; i++) {
+        if (mask[i]) {
+           vl_getrgba(FLIP2(y[i])*_w_ + x[i], rgba[i]);
+        }
+    }
+ } else {
+    /* read all pixels */
+    for (i=0; i<n; i++) {
+        vl_getrgba(FLIP2(y[i])*_w_ + x[i], rgba[i]);
+    }
+ }
+}
+
+
+
+/****************************************************************************
+ * Index
+ ***************************************************************************/
+#ifndef MATROX
+static void write_index_span (const GLcontext *ctx, GLuint n, GLint x, GLint y,
+                              const GLuint index[], const GLubyte mask[])
+{
+ const DMesaContext dmesa = (DMesaContext)ctx;
+ GLuint i, offset;
+
+ offset = DSTRIDE * FLIP(y) + x;
+ if (mask) {
+    /* draw some pixels */
+    for (i=0; i<n; i++, offset++) {
+        if (mask[i]) {
+           vl_putpixel(offset, index[i]);
+        }
+    }
+ } else {
+    /* draw all pixels */
+    for (i=0; i<n; i++, offset++) {
+        vl_putpixel(offset, index[i]);
+    }
+ }
+}
+
+
+
+static void write_index8_span (const GLcontext *ctx, GLuint n, GLint x, GLint y,
+                               const GLubyte index[], const GLubyte mask[])
+{
+ const DMesaContext dmesa = (DMesaContext)ctx;
+ GLuint i, offset;
+
+ offset = DSTRIDE * FLIP(y) + x;
+ if (mask) {
+    /* draw some pixels */
+    for (i=0; i<n; i++, offset++) {
+        if (mask[i]) {
+           vl_putpixel(offset, index[i]);
+        }
+    }
+ } else {
+    /* draw all pixels */
+    for (i=0; i<n; i++, offset++) {
+        vl_putpixel(offset, index[i]);
+    }
+ }
+}
+
+
+
+static void write_mono_index_span (const GLcontext *ctx,
+                                   GLuint n, GLint x, GLint y,
+                                   GLuint colorIndex, const GLubyte mask[])
+{
+ const DMesaContext dmesa = (DMesaContext)ctx;
+ GLuint i, offset;
+
+ offset = DSTRIDE * FLIP(y) + x;
+ if (mask) {
+    /* draw some pixels */
+    for (i=0; i<n; i++, offset++) {
+        if (mask[i]) {
+           vl_putpixel(offset, colorIndex);
+        }
+    }
+ } else {
+    /* draw all pixels */
+    for (i=0; i<n; i++, offset++) {
+        vl_putpixel(offset, colorIndex);
+    }
+ }
+}
+
+
+
+static void read_index_span (const GLcontext *ctx, GLuint n, GLint x, GLint y,
+                             GLuint index[])
+{
+ const DMesaContext dmesa = (DMesaContext)ctx;
+ GLuint i, offset;
+
+ offset = DSTRIDE * FLIP(y) + x;
+ /* read all pixels */
+ for (i=0; i<n; i++, offset++) {
+     index[i] = vl_getpixel(offset);
+ }
+}
+
+
+
+static void write_index_pixels (const GLcontext *ctx,
+                                GLuint n, const GLint x[], const GLint y[],
+                                const GLuint index[], const GLubyte mask[])
+{
+ const DMesaContext dmesa = (DMesaContext)ctx;
+ GLuint i, _w_ = DSTRIDE, _b_ = dmesa->Buffer->height - 1;
+
+ if (mask) {
+    /* draw some pixels */
+    for (i=0; i<n; i++) {
+        if (mask[i]) {
+           vl_putpixel(FLIP2(y[i])*_w_ + x[i], index[i]);
+        }
+    }
+ } else {
+    /* draw all pixels */
+    for (i=0; i<n; i++) {
+        vl_putpixel(FLIP2(y[i])*_w_ + x[i], index[i]);
+    }
+ }
+}
+
+
+
+static void write_mono_index_pixels (const GLcontext *ctx,
+                                     GLuint n, const GLint x[], const GLint y[],
+                                     GLuint colorIndex, const GLubyte mask[])
+{
+ const DMesaContext dmesa = (DMesaContext)ctx;
+ GLuint i, _w_ = DSTRIDE, _b_ = dmesa->Buffer->height - 1;
+
+ if (mask) {
+    /* draw some pixels */
+    for (i=0; i<n; i++) {
+        if (mask[i]) {
+           vl_putpixel(FLIP2(y[i])*_w_ + x[i], colorIndex);
+        }
+    }
+ } else {
+    /* draw all pixels */
+    for (i=0; i<n; i++) {
+        vl_putpixel(FLIP2(y[i])*_w_ + x[i], colorIndex);
+    }
+ }
+}
+
+
+
+static void read_index_pixels (const GLcontext *ctx,
+                               GLuint n, const GLint x[], const GLint y[],
+                               GLuint index[], const GLubyte mask[])
+{
+ const DMesaContext dmesa = (DMesaContext)ctx;
+ GLuint i, _w_ = DSTRIDE, _b_ = dmesa->Buffer->height - 1;
+
+ if (mask) {
+    /* read some pixels */
+    for (i=0; i<n; i++) {
+        if (mask[i]) {
+           index[i] = vl_getpixel(FLIP2(y[i])*_w_ + x[i]);
+        }
+    }
+ } else {
+    /* read all pixels */
+    for (i=0; i<n; i++) {
+        index[i] = vl_getpixel(FLIP2(y[i])*_w_ + x[i]);
+    }
+ }
+}
+#endif /* !MATROX */
+
+
+
+/****************************************************************************
+ * Z-buffer
+ ***************************************************************************/
+#ifdef MATROX
+static void write_depth_span (GLcontext *ctx, GLuint n, GLint x, GLint y,
+                              const GLdepth depth[], const GLubyte mask[])
+{
+ const DMesaContext dmesa = (DMesaContext)ctx;
+ GLuint i, offset;
+
+ offset = DSTRIDE * FLIP(y) + x;
+ if (mask) {
+    /* draw some values */
+    for (i=0; i<n; i++, offset++) {
+        if (mask[i]) {
+           vl_setz(offset, depth[i]);
+        }
+    }
+ } else {
+    /* draw all values */
+    for (i=0; i<n; i++, offset++) {
+        vl_setz(offset, depth[i]);
+    }
+ }
+}
+
+
+
+static void read_depth_span (GLcontext *ctx, GLuint n, GLint x, GLint y,
+                             GLdepth depth[])
+{
+ const DMesaContext dmesa = (DMesaContext)ctx;
+ GLuint i, offset;
+
+ offset = DSTRIDE * FLIP(y) + x;
+ /* read all values */
+ for (i=0; i<n; i++, offset++) {
+     depth[i] = vl_getz(offset);
+ }
+}
+
+
+
+static void write_depth_pixels (GLcontext *ctx, GLuint n,
+                                const GLint x[], const GLint y[],
+                                const GLdepth depth[], const GLubyte mask[])
+{
+ const DMesaContext dmesa = (DMesaContext)ctx;
+ GLuint i, _w_ = DSTRIDE, _b_ = dmesa->Buffer->height - 1;
+
+ if (mask) {
+    /* draw some values */
+    for (i=0; i<n; i++) {
+        if (mask[i]) {
+           vl_setz(FLIP2(y[i])*_w_ + x[i], depth[i]);
+        }
+    }
+ } else {
+    /* draw all values */
+    for (i=0; i<n; i++) {
+        vl_setz(FLIP2(y[i])*_w_ + x[i], depth[i]);
+    }
+ }
+}
+
+
+
+static void read_depth_pixels (GLcontext *ctx, GLuint n,
+                               const GLint x[], const GLint y[],
+                               GLdepth depth[])
+{
+ const DMesaContext dmesa = (DMesaContext)ctx;
+ GLuint i, _w_ = DSTRIDE, _b_ = dmesa->Buffer->height - 1;
+
+ /* read all values */
+ for (i=0; i<n; i++) {
+     depth[i] = vl_getz(FLIP2(y[i])*_w_ + x[i]);
+ }
+}
+#endif /* MATROX */
+
+
+
+/****************************************************************************
+ * Optimized triangle rendering
+ ***************************************************************************/
+
+/*
+ * NON-depth-buffered flat triangle.
+ */
+#ifndef MATROX
+
+#define NAME tri_rgb_flat
+
+#define SETUP_CODE \
+ const DMesaContext dmesa = (DMesaContext)ctx; \
+ GLuint _b_ = dmesa->Buffer->height - 1; \
+ GLuint _w_ = dmesa->Buffer->width; \
+ GLuint rgb = vl_mixrgb(v2->color);
+
+#define RENDER_SPAN(span) \
+ GLuint i, offset = FLIP2(span.y)*_w_ + span.x;	\
+ for (i = 0; i < span.end; i++, offset++) {	\
+     vl_putpixel(offset, rgb);			\
+ }
+
+#include "swrast/s_tritemp.h"
+
+#else  /* MATROX */
+
+static void tri_rgb_flat (GLcontext *ctx,
+                          const SWvertex *v0,
+                          const SWvertex *v1,
+                          const SWvertex *v2)
+{
+ const DMesaContext dmesa = (DMesaContext)ctx;
+ GLuint _b_ = dmesa->Buffer->height - 1;
+ MGAvertex m0, m1, m2;
+ m0.win[0] = v0->win[0];
+ m0.win[1] = FLIP2(v0->win[1]);
+ m1.win[0] = v1->win[0];
+ m1.win[1] = FLIP2(v1->win[1]);
+ m2.win[0] = v2->win[0];
+ m2.win[1] = FLIP2(v2->win[1]);
+ *(unsigned long *)m2.color = *(unsigned long *)v2->color;
+ mga_draw_tri_rgb_flat((int)SWRAST_CONTEXT(ctx)->_backface_sign, &m0, &m1, &m2);
+}
+#endif /* MATROX */
+
+
+
+/*
+ * Z-less flat triangle.
+ */
+#ifndef MATROX
+
+#define NAME tri_rgb_flat_zless
+
+#define INTERP_Z 1
+#define DEPTH_TYPE DEFAULT_SOFTWARE_DEPTH_TYPE
+
+#define SETUP_CODE \
+ const DMesaContext dmesa = (DMesaContext)ctx; \
+ GLuint _b_ = dmesa->Buffer->height - 1; \
+ GLuint _w_ = dmesa->Buffer->width; \
+ GLuint rgb = vl_mixrgb(v2->color);
+
+#define RENDER_SPAN(span) \
+ GLuint i, offset = FLIP2(span.y)*_w_ + span.x;	\
+ for (i = 0; i < span.end; i++, offset++) {	\
+     const DEPTH_TYPE z = FixedToDepth(span.z);	\
+     if (z < zRow[i]) {				\
+        vl_putpixel(offset, rgb);		\
+        zRow[i] = z;				\
+     }						\
+     span.z += span.zStep;			\
+ }
+
+#include "swrast/s_tritemp.h"
+
+#else  /* MATROX */
+
+static void tri_rgb_flat_zless (GLcontext *ctx,
+                                const SWvertex *v0,
+                                const SWvertex *v1,
+                                const SWvertex *v2)
+{
+ const DMesaContext dmesa = (DMesaContext)ctx;
+ GLuint _b_ = dmesa->Buffer->height - 1;
+ MGAvertex m0, m1, m2;
+ m0.win[0] = v0->win[0];
+ m0.win[1] = FLIP2(v0->win[1]);
+ m0.win[2] = v0->win[2];
+ m1.win[0] = v1->win[0];
+ m1.win[1] = FLIP2(v1->win[1]);
+ m1.win[2] = v1->win[2];
+ m2.win[0] = v2->win[0];
+ m2.win[1] = FLIP2(v2->win[1]);
+ m2.win[2] = v2->win[2];
+ *(unsigned long *)m2.color = *(unsigned long *)v2->color;
+ mga_draw_tri_rgb_flat_zless((int)SWRAST_CONTEXT(ctx)->_backface_sign, &m0, &m1, &m2);
+}
+#endif /* MATROX */
+
+
+
+/*
+ * NON-depth-buffered iterated triangle.
+ */
+#ifndef MATROX
+
+#define NAME tri_rgb_iter
+
+#define INTERP_RGB 1
+
+#define SETUP_CODE \
+ const DMesaContext dmesa = (DMesaContext)ctx; \
+ GLuint _b_ = dmesa->Buffer->height - 1; \
+ GLuint _w_ = dmesa->Buffer->width;
+
+#define RENDER_SPAN(span) \
+ GLuint i, offset = FLIP2(span.y)*_w_ + span.x;				\
+ for (i = 0; i < span.end; i++, offset++) {				\
+     vl_putpixel(offset, vl_mixfix(span.red, span.green, span.blue));	\
+     span.red += span.redStep;						\
+     span.green += span.greenStep;					\
+     span.blue += span.blueStep;					\
+ }
+
+#include "swrast/s_tritemp.h"
+
+#else  /* MATROX */
+
+static void tri_rgb_iter (GLcontext *ctx,
+                          const SWvertex *v0,
+                          const SWvertex *v1,
+                          const SWvertex *v2)
+{
+ const DMesaContext dmesa = (DMesaContext)ctx;
+ GLuint _b_ = dmesa->Buffer->height - 1;
+ MGAvertex m0, m1, m2;
+ m0.win[0] = v0->win[0];
+ m0.win[1] = FLIP2(v0->win[1]);
+ m1.win[0] = v1->win[0];
+ m1.win[1] = FLIP2(v1->win[1]);
+ m2.win[0] = v2->win[0];
+ m2.win[1] = FLIP2(v2->win[1]);
+ *(unsigned long *)m0.color = *(unsigned long *)v0->color;
+ *(unsigned long *)m1.color = *(unsigned long *)v1->color;
+ *(unsigned long *)m2.color = *(unsigned long *)v2->color;
+ mga_draw_tri_rgb_iter((int)SWRAST_CONTEXT(ctx)->_backface_sign, &m0, &m1, &m2);
+}
+#endif /* MATROX */
+
+
+
+/*
+ * Z-less iterated triangle.
+ */
+#ifndef MATROX
+
+#define NAME tri_rgb_iter_zless
+
+#define INTERP_Z 1
+#define DEPTH_TYPE DEFAULT_SOFTWARE_DEPTH_TYPE
+#define INTERP_RGB 1
+
+#define SETUP_CODE \
+ const DMesaContext dmesa = (DMesaContext)ctx; \
+ GLuint _b_ = dmesa->Buffer->height - 1; \
+ GLuint _w_ = dmesa->Buffer->width;
+
+#define RENDER_SPAN(span) \
+ GLuint i, offset = FLIP2(span.y)*_w_ + span.x;				\
+ for (i = 0; i < span.end; i++, offset++) {				\
+     const DEPTH_TYPE z = FixedToDepth(span.z);				\
+     if (z < zRow[i]) {							\
+        vl_putpixel(offset, vl_mixfix(span.red, span.green, span.blue));\
+        zRow[i] = z;							\
+     }									\
+     span.red += span.redStep;						\
+     span.green += span.greenStep;					\
+     span.blue += span.blueStep;					\
+     span.z += span.zStep;						\
+ }
+
+#include "swrast/s_tritemp.h"
+
+#else  /* MATROX */
+
+static void tri_rgb_iter_zless (GLcontext *ctx,
+                                const SWvertex *v0,
+                                const SWvertex *v1,
+                                const SWvertex *v2)
+{
+ const DMesaContext dmesa = (DMesaContext)ctx;
+ GLuint _b_ = dmesa->Buffer->height - 1;
+ MGAvertex m0, m1, m2;
+ m0.win[0] = v0->win[0];
+ m0.win[1] = FLIP2(v0->win[1]);
+ m0.win[2] = v0->win[2];
+ m1.win[0] = v1->win[0];
+ m1.win[1] = FLIP2(v1->win[1]);
+ m1.win[2] = v1->win[2];
+ m2.win[0] = v2->win[0];
+ m2.win[1] = FLIP2(v2->win[1]);
+ m2.win[2] = v2->win[2];
+ *(unsigned long *)m0.color = *(unsigned long *)v0->color;
+ *(unsigned long *)m1.color = *(unsigned long *)v1->color;
+ *(unsigned long *)m2.color = *(unsigned long *)v2->color;
+ mga_draw_tri_rgb_iter_zless((int)SWRAST_CONTEXT(ctx)->_backface_sign, &m0, &m1, &m2);
+}
+#endif /* MATROX */
+
+
+
+/*
+ * Analyze context state to see if we can provide a fast triangle function
+ * Otherwise, return NULL.
+ */
+static swrast_tri_func dmesa_choose_tri_function (GLcontext *ctx)
+{
+ const SWcontext *swrast = SWRAST_CONTEXT(ctx);
+
+ if ((ctx->RenderMode != GL_RENDER)
+     || (ctx->Polygon.SmoothFlag)
+     || (ctx->Polygon.StippleFlag)
+     || (ctx->Texture._EnabledUnits)
+     || (swrast->_RasterMask & MULTI_DRAW_BIT)
+     || (ctx->Polygon.CullFlag && ctx->Polygon.CullFaceMode == GL_FRONT_AND_BACK)) {
+    return (swrast_tri_func)NULL;
+ }
+
+ if (swrast->_RasterMask==DEPTH_BIT
+     && ctx->Depth.Func==GL_LESS
+     && ctx->Depth.Mask==GL_TRUE
+     && ctx->Visual.depthBits == DEFAULT_SOFTWARE_DEPTH_BITS) {
+    return (ctx->Light.ShadeModel==GL_SMOOTH) ? tri_rgb_iter_zless : tri_rgb_flat_zless;
+ }
+
+ if (swrast->_RasterMask==0) { /* no depth test */
+    return (ctx->Light.ShadeModel==GL_SMOOTH) ? tri_rgb_iter : tri_rgb_flat;
+ }
+
+ return (swrast_tri_func)NULL;
+}
+
+
+
+/* Override for the swrast triangle-selection function.  Try to use one
+ * of our internal triangle functions, otherwise fall back to the
+ * standard swrast functions.
+ */
+static void dmesa_choose_tri (GLcontext *ctx)
+{
+ SWcontext *swrast = SWRAST_CONTEXT(ctx);
+
+ if (!(swrast->Triangle=dmesa_choose_tri_function(ctx)))
+    _swrast_choose_triangle(ctx);
+}
+
+
+
+/****************************************************************************
+ * Optimized line rendering
+ ***************************************************************************/
+
+#ifdef MATROX
+static __inline void matrox_line_clip_hack (GLcontext *ctx, int _b_, MGAvertex *m0, const SWvertex *vert0, MGAvertex *m1, const SWvertex *vert1)
+{
+ int x0 = vert0->win[0];
+ int y0 = vert0->win[1];
+ int x1 = vert1->win[0];
+ int y1 = vert1->win[1];
+ /* s_linetemp.h { */
+ GLint w = ctx->DrawBuffer->Width;
+ GLint h = ctx->DrawBuffer->Height;
+ if ((x0==w) | (x1==w)) {
+    if ((x0==w) & (x1==w))
+       return;
+    x0 -= x0==w;
+    x1 -= x1==w;
+ }
+ if ((y0==h) | (y1==h)) {
+    if ((y0==h) & (y1==h))
+       return;
+    y0 -= y0==h;
+    y1 -= y1==h;
+ }
+ /* } s_linetemp.h */
+ m0->win[0] = x0;
+ m0->win[1] = FLIP2(y0);
+ m1->win[0] = x1;
+ m1->win[1] = FLIP2(y1);
+}
+#endif
+
+/*
+ * NON-depth-buffered flat line.
+ */
+#ifndef MATROX
+
+#define NAME line_rgb_flat
+
+#define INTERP_XY 1
+#define CLIP_HACK 1
+
+#define SETUP_CODE \
+ const DMesaContext dmesa = (DMesaContext)ctx; \
+ GLuint _b_ = dmesa->Buffer->height - 1; \
+ GLuint _w_ = dmesa->Buffer->width; \
+ GLuint rgb = vl_mixrgb(vert1->color);
+
+#define PLOT(X,Y) vl_putpixel(FLIP2(Y) * _w_ + X, rgb);
+
+#include "swrast/s_linetemp.h"
+
+#else  /* MATROX */
+
+static void line_rgb_flat (GLcontext *ctx,
+                           const SWvertex *vert0,
+                           const SWvertex *vert1)
+{
+ const DMesaContext dmesa = (DMesaContext)ctx;
+ GLuint _b_ = dmesa->Buffer->height - 1;
+ MGAvertex m0, m1;
+ matrox_line_clip_hack(ctx, _b_, &m0, vert0, &m1, vert1);
+ *(unsigned long *)m1.color = *(unsigned long *)vert1->color;
+ mga_draw_line_rgb_flat(&m0, &m1);
+}
+#endif /* MATROX */
+
+
+
+/*
+ * Z-less flat line.
+ */
+#ifndef MATROX
+
+#define NAME line_rgb_flat_zless
+
+#define INTERP_XY 1
+#define INTERP_Z 1
+#define DEPTH_TYPE DEFAULT_SOFTWARE_DEPTH_TYPE
+#define CLIP_HACK 1
+
+#define SETUP_CODE \
+ const DMesaContext dmesa = (DMesaContext)ctx; \
+ GLuint _b_ = dmesa->Buffer->height - 1; \
+ GLuint _w_ = dmesa->Buffer->width; \
+ GLuint rgb = vl_mixrgb(vert1->color);
+
+#define PLOT(X,Y) \
+ if (Z < *zPtr) {				\
+    *zPtr = Z;					\
+    vl_putpixel(FLIP2(Y) * _w_ + X, rgb);	\
+ }
+
+#include "swrast/s_linetemp.h"
+
+#else  /* MATROX */
+
+static void line_rgb_flat_zless (GLcontext *ctx,
+                                 const SWvertex *vert0,
+                                 const SWvertex *vert1)
+{
+ const DMesaContext dmesa = (DMesaContext)ctx;
+ GLuint _b_ = dmesa->Buffer->height - 1;
+ MGAvertex m0, m1;
+ matrox_line_clip_hack(ctx, _b_, &m0, vert0, &m1, vert1);
+ m0.win[2] = vert0->win[2];
+ m1.win[2] = vert1->win[2];
+ *(unsigned long *)m1.color = *(unsigned long *)vert1->color;
+ mga_draw_line_rgb_flat_zless(&m0, &m1);
+}
+#endif /* MATROX */
+
+
+
+#ifndef MATROX
+#define line_rgb_iter NULL
+#define line_rgb_iter_zless NULL
+#else  /* MATROX */
+/*
+ * NON-depth-buffered iterated line.
+ */
+static void line_rgb_iter (GLcontext *ctx,
+                           const SWvertex *vert0,
+                           const SWvertex *vert1)
+{
+ const DMesaContext dmesa = (DMesaContext)ctx;
+ GLuint _b_ = dmesa->Buffer->height - 1;
+ MGAvertex m0, m1;
+ matrox_line_clip_hack(ctx, _b_, &m0, vert0, &m1, vert1);
+ *(unsigned long *)m0.color = *(unsigned long *)vert0->color;
+ *(unsigned long *)m1.color = *(unsigned long *)vert1->color;
+ mga_draw_line_rgb_iter(&m0, &m1);
+}
+
+
+
+/*
+ * Z-less iterated line.
+ */
+static void line_rgb_iter_zless (GLcontext *ctx,
+                                 const SWvertex *vert0,
+                                 const SWvertex *vert1)
+{
+ const DMesaContext dmesa = (DMesaContext)ctx;
+ GLuint _b_ = dmesa->Buffer->height - 1;
+ MGAvertex m0, m1;
+ matrox_line_clip_hack(ctx, _b_, &m0, vert0, &m1, vert1);
+ m0.win[2] = vert0->win[2];
+ m1.win[2] = vert1->win[2];
+ *(unsigned long *)m0.color = *(unsigned long *)vert0->color;
+ *(unsigned long *)m1.color = *(unsigned long *)vert1->color;
+ mga_draw_line_rgb_iter_zless(&m0, &m1);
+}
+#endif /* MATROX */
+
+
+
+/*
+ * Analyze context state to see if we can provide a fast line function
+ * Otherwise, return NULL.
+ */
+static swrast_line_func dmesa_choose_line_function (GLcontext *ctx)
+{
+ const SWcontext *swrast = SWRAST_CONTEXT(ctx);
+
+ if ((ctx->RenderMode != GL_RENDER)
+     || (ctx->Line.SmoothFlag)
+     || (ctx->Texture._EnabledUnits)
+     || (ctx->Line.StippleFlag)
+     || (swrast->_RasterMask & MULTI_DRAW_BIT)
+     || (ctx->Line.Width!=1.0F)) {
+    return (swrast_line_func)NULL;
+ }
+
+ if (swrast->_RasterMask==DEPTH_BIT
+     && ctx->Depth.Func==GL_LESS
+     && ctx->Depth.Mask==GL_TRUE
+     && ctx->Visual.depthBits == DEFAULT_SOFTWARE_DEPTH_BITS) {
+    return (ctx->Light.ShadeModel==GL_SMOOTH) ? line_rgb_iter_zless : line_rgb_flat_zless;
+ }
+
+ if (swrast->_RasterMask==0) { /* no depth test */
+    return (ctx->Light.ShadeModel==GL_SMOOTH) ? line_rgb_iter : line_rgb_flat;
+ }
+
+ return (swrast_line_func)NULL;
+}
+
+
+
+/* Override for the swrast line-selection function.  Try to use one
+ * of our internal line functions, otherwise fall back to the
+ * standard swrast functions.
+ */
+static void dmesa_choose_line (GLcontext *ctx)
+{
+ SWcontext *swrast = SWRAST_CONTEXT(ctx);
+
+ if (!(swrast->Line=dmesa_choose_line_function(ctx)))
+    _swrast_choose_line(ctx);
+}
+
+
+
+/****************************************************************************
+ * Miscellaneous device driver funcs
+ ***************************************************************************/
+
+static void clear_index (GLcontext *ctx, GLuint index)
+{
+ ((DMesaContext)ctx)->ClearIndex = index;
+}
+
+static void clear_color (GLcontext *ctx, const GLfloat color[4])
+{
+ GLubyte col[4];
+ CLAMPED_FLOAT_TO_UBYTE(col[0], color[0]);
+ CLAMPED_FLOAT_TO_UBYTE(col[1], color[1]);
+ CLAMPED_FLOAT_TO_UBYTE(col[2], color[2]);
+ CLAMPED_FLOAT_TO_UBYTE(col[3], color[3]);
+ ((DMesaContext)ctx)->ClearColor = vl_mixrgba(col);
+}
+
+
+
+static void clear (GLcontext *ctx, GLbitfield mask, GLboolean all,
+                   GLint x, GLint y, GLint width, GLint height)
+{
+ const DMesaContext c = (DMesaContext)ctx;
+ const GLuint *colorMask = (GLuint *)&ctx->Color.ColorMask;
+
+/*
+ * Clear the specified region of the buffers indicated by 'mask'
+ * using the clear color or index as specified by one of the two
+ * functions above.
+ * If all==GL_TRUE, clear whole buffer, else just clear region defined
+ * by x,y,width,height
+ */
+
+ /* we can't handle color or index masking */
+ if ((*colorMask == 0xffffffff) && (ctx->Color.IndexMask == 0xffffffff)) {
+#ifndef MATROX
+    if (mask & DD_BACK_LEFT_BIT) {
+       int color = c->visual->rgb_flag ? c->ClearColor : c->ClearIndex;
+
+       if (all) {
+          vl_clear(color);
+       } else {
+          vl_rect(x, y, width, height, color);
+       }
+
+       mask &= ~DD_BACK_LEFT_BIT;
+    }
+#else  /* MATROX */
+    unsigned short z = -1;
+    int color = c->ClearColor;
+    if (mask & DD_DEPTH_BIT) {
+       z = ctx->Depth.Clear * 0xffff;
+    }
+    if (all) {
+       mga_clear(mask & DD_FRONT_LEFT_BIT,
+                 mask & DD_BACK_LEFT_BIT,
+                 mask & DD_DEPTH_BIT,
+                 0, 0, c->Buffer->width, c->Buffer->height,
+                 color, z);
+    } else {
+       mga_clear(mask & DD_FRONT_LEFT_BIT,
+                 mask & DD_BACK_LEFT_BIT,
+                 mask & DD_DEPTH_BIT,
+                 x, y, width, height,
+                 color, z);
+    }
+    mask &= ~(DD_FRONT_LEFT_BIT | DD_BACK_LEFT_BIT | DD_DEPTH_BIT);
+#endif /* MATROX */
+ }
+
+ if (mask) {
+    _swrast_Clear(ctx, mask, all, x, y, width, height);
+ }
+}
+
+
+
+static void set_buffer (GLcontext *ctx, GLframebuffer *colorBuffer, GLuint bufferBit)
+{
+ /*
+  * XXX todo - examine bufferBit and set read/write pointers
+  */
+}
+
+
+
+/*
+ * Return the width and height of the current buffer.
+ * If anything special has to been done when the buffer/window is
+ * resized, do it now.
+ */
+static void get_buffer_size (GLframebuffer *buffer, GLuint *width, GLuint *height)
+{
+ DMesaBuffer b = (DMesaBuffer)buffer;
+
+ *width  = b->width;
+ *height = b->height;
+}
+
+
+
+static const GLubyte* get_string (GLcontext *ctx, GLenum name)
+{
+ switch (name) {
+        case GL_RENDERER:
+             return (const GLubyte *)"Mesa DJGPP"
+                                     #ifdef FX
+                                     " (FX)"
+                                     #endif
+                                     #ifdef MATROX
+                                     " (MGA)"
+                                     #endif
+                                     "\0port (c) Borca Daniel mar-2003";
+        default:
+             return NULL;
+ }
+}
+
+
+
+static void finish (GLcontext *ctx)
+{
+ /*
+  * XXX todo - OPTIONAL FUNCTION: implements glFinish if possible
+  */
+}
+
+
+
+static void flush (GLcontext *ctx)
+{
+ /*
+  * XXX todo - OPTIONAL FUNCTION: implements glFlush if possible
+  */
+}
+
+
+
+/****************************************************************************
+ * State
+ ***************************************************************************/
+#define DMESA_NEW_LINE   (_NEW_LINE | \
+                          _NEW_TEXTURE | \
+                          _NEW_LIGHT | \
+                          _NEW_DEPTH | \
+                          _NEW_RENDERMODE | \
+                          _SWRAST_NEW_RASTERMASK)
+
+#define DMESA_NEW_TRIANGLE (_NEW_POLYGON | \
+                            _NEW_TEXTURE | \
+                            _NEW_LIGHT | \
+                            _NEW_DEPTH | \
+                            _NEW_RENDERMODE | \
+                            _SWRAST_NEW_RASTERMASK)
+
+/* Extend the software rasterizer with our line and triangle
+ * functions.
+ */
+static void dmesa_register_swrast_functions (GLcontext *ctx)
+{
+ SWcontext *swrast = SWRAST_CONTEXT(ctx);
+
+ swrast->choose_line = dmesa_choose_line;
+ swrast->choose_triangle = dmesa_choose_tri;
+
+ swrast->invalidate_line |= DMESA_NEW_LINE;
+ swrast->invalidate_triangle |= DMESA_NEW_TRIANGLE;
+}
+
+
+
+/* Setup pointers and other driver state that is constant for the life
+ * of a context.
+ */
+static void dmesa_init_pointers (GLcontext *ctx)
+{
+ TNLcontext *tnl;
+ struct swrast_device_driver *dd = _swrast_GetDeviceDriverReference(ctx);
+
+ ctx->Driver.GetString = get_string;
+ ctx->Driver.GetBufferSize = get_buffer_size;
+ ctx->Driver.Flush = flush;
+ ctx->Driver.Finish = finish;
+    
+ /* Software rasterizer pixel paths:
+  */
+ ctx->Driver.Accum = _swrast_Accum;
+ ctx->Driver.Bitmap = _swrast_Bitmap;
+ ctx->Driver.Clear = clear;
+ ctx->Driver.ResizeBuffers = _swrast_alloc_buffers;
+ ctx->Driver.CopyPixels = _swrast_CopyPixels;
+ ctx->Driver.DrawPixels = _swrast_DrawPixels;
+ ctx->Driver.ReadPixels = _swrast_ReadPixels;
+ ctx->Driver.DrawBuffer = _swrast_DrawBuffer;
+
+ /* Software texture functions:
+  */
+ ctx->Driver.ChooseTextureFormat = _mesa_choose_tex_format;
+ ctx->Driver.TexImage1D = _mesa_store_teximage1d;
+ ctx->Driver.TexImage2D = _mesa_store_teximage2d;
+ ctx->Driver.TexImage3D = _mesa_store_teximage3d;
+ ctx->Driver.TexSubImage1D = _mesa_store_texsubimage1d;
+ ctx->Driver.TexSubImage2D = _mesa_store_texsubimage2d;
+ ctx->Driver.TexSubImage3D = _mesa_store_texsubimage3d;
+ ctx->Driver.TestProxyTexImage = _mesa_test_proxy_teximage;
+
+ ctx->Driver.CopyTexImage1D = _swrast_copy_teximage1d;
+ ctx->Driver.CopyTexImage2D = _swrast_copy_teximage2d;
+ ctx->Driver.CopyTexSubImage1D = _swrast_copy_texsubimage1d;
+ ctx->Driver.CopyTexSubImage2D = _swrast_copy_texsubimage2d;
+ ctx->Driver.CopyTexSubImage3D = _swrast_copy_texsubimage3d;
+
+ ctx->Driver.CompressedTexImage1D = _mesa_store_compressed_teximage1d;
+ ctx->Driver.CompressedTexImage2D = _mesa_store_compressed_teximage2d;
+ ctx->Driver.CompressedTexImage3D = _mesa_store_compressed_teximage3d;
+ ctx->Driver.CompressedTexSubImage1D = _mesa_store_compressed_texsubimage1d;
+ ctx->Driver.CompressedTexSubImage2D = _mesa_store_compressed_texsubimage2d;
+ ctx->Driver.CompressedTexSubImage3D = _mesa_store_compressed_texsubimage3d;
+
+ /* Swrast hooks for imaging extensions:
+  */
+ ctx->Driver.CopyColorTable = _swrast_CopyColorTable;
+ ctx->Driver.CopyColorSubTable = _swrast_CopyColorSubTable;
+ ctx->Driver.CopyConvolutionFilter1D = _swrast_CopyConvolutionFilter1D;
+ ctx->Driver.CopyConvolutionFilter2D = _swrast_CopyConvolutionFilter2D;
+
+ /* Statechange callbacks:
+  */
+ ctx->Driver.ClearColor = clear_color;
+ ctx->Driver.ClearIndex = clear_index;
+
+ /* Initialize the TNL driver interface:
+  */
+ tnl = TNL_CONTEXT(ctx);
+ tnl->Driver.RunPipeline = _tnl_run_pipeline;
+
+ dd->SetBuffer = set_buffer;
+   
+ /* Install swsetup for tnl->Driver.Render.*:
+  */
+ _swsetup_Wakeup(ctx);
+
+ /* The span functions should be in `dmesa_update_state', but I'm
+  * pretty sure they will never change during the life of the Visual
+  */
+#ifdef MATROX
+ if (((DMesaContext)ctx)->visual->zbuffer == -1) {
+    /* Depth span/pixel functions */
+    dd->WriteDepthSpan = write_depth_span;
+    dd->WriteDepthPixels = write_depth_pixels;
+    dd->ReadDepthSpan = read_depth_span;
+    dd->ReadDepthPixels = read_depth_pixels;
+ }
+#endif
+
+#ifndef MATROX
+ /* Index span/pixel functions */
+ dd->WriteCI32Span = write_index_span;
+ dd->WriteCI8Span = write_index8_span;
+ dd->WriteMonoCISpan = write_mono_index_span;
+ dd->WriteCI32Pixels = write_index_pixels;
+ dd->WriteMonoCIPixels = write_mono_index_pixels;
+ dd->ReadCI32Span = read_index_span;
+ dd->ReadCI32Pixels = read_index_pixels;
+#endif
+
+ /* RGB(A) span/pixel functions */
+ dd->WriteRGBASpan = write_rgba_span;
+ dd->WriteRGBSpan = write_rgb_span;
+ dd->WriteMonoRGBASpan = write_mono_rgba_span;
+ dd->WriteRGBAPixels = write_rgba_pixels;
+ dd->WriteMonoRGBAPixels = write_mono_rgba_pixels;
+ dd->ReadRGBASpan = read_rgba_span;
+ dd->ReadRGBAPixels = read_rgba_pixels;
+}
+
+
+
+static void dmesa_update_state (GLcontext *ctx, GLuint new_state)
+{
+ /* Propogate statechange information to swrast and swrast_setup
+  * modules. The DMesa driver has no internal GL-dependent state.
+  */
+ _swrast_InvalidateState( ctx, new_state );
+ _ac_InvalidateState( ctx, new_state );
+ _tnl_InvalidateState( ctx, new_state );
+ _swsetup_InvalidateState( ctx, new_state );
+}
+#endif /* FX */
+
+
+
+/****************************************************************************
+ * DMesa Public API Functions
+ ***************************************************************************/
+
+/*
+ * The exact arguments to this function will depend on your window system
+ */
+DMesaVisual DMesaCreateVisual (GLint width,
+                               GLint height,
+                               GLint colDepth,
+                               GLint refresh,
+                               GLboolean dbFlag,
+                               GLboolean rgbFlag,
+                               GLboolean alphaFlag,
+                               GLint depthSize,
+                               GLint stencilSize,
+                               GLint accumSize)
+{
+#ifndef FX
+ DMesaVisual v;
+ GLint redBits, greenBits, blueBits, alphaBits, indexBits;
+
+#ifndef MATROX
+ if (!dbFlag) {
+    return NULL;
+ }
+#else
+ if (!rgbFlag) {
+    return NULL;
+ }
+#endif
+
+ alphaBits = 0;
+
+ if (!rgbFlag) {
+    indexBits = 8;
+    redBits = 0;
+    greenBits = 0;
+    blueBits = 0;
+ } else {
+    indexBits = 0;
+    switch (colDepth) {
+           case 8:
+                redBits = 8;
+                greenBits = 8;
+                blueBits = 8;
+                break;
+           case 15:
+                redBits = 5;
+                greenBits = 5;
+                blueBits = 5;
+                break;
+           case 16:
+                redBits = 5;
+                greenBits = 6;
+                blueBits = 5;
+                break;
+           case 32:
+                alphaBits = 8;
+           case 24:
+                redBits = 8;
+                greenBits = 8;
+                blueBits = 8;
+                break;
+           default:
+                return NULL;
+    }
+ }
+
+#ifndef MATROX
+ if ((colDepth=vl_video_init(width, height, colDepth, rgbFlag, refresh)) <= 0) {
+    return NULL;
+ }
+#else
+ if (mga_open(width, height, colDepth, dbFlag ? 2 : 1, depthSize == 16, refresh) < 0) {
+    return NULL;
+ }
+#endif
+
+ if (alphaFlag && (alphaBits==0)) {
+    alphaBits = 8;
+ }
+
+ if ((v=(DMesaVisual)CALLOC_STRUCT(dmesa_visual)) != NULL) {
+    /* Create core visual */
+    _mesa_initialize_visual((GLvisual *)v,
+                            rgbFlag,		/* rgb */
+                            dbFlag,
+                            GL_FALSE,		/* stereo */
+                            redBits,
+                            greenBits,
+                            blueBits,
+                            alphaBits,
+                            indexBits,		/* indexBits */
+                            depthSize,
+                            stencilSize,
+                            accumSize,		/* accumRed */
+                            accumSize,		/* accumGreen */
+                            accumSize,		/* accumBlue */
+                            alphaFlag?accumSize:0,	/* accumAlpha */
+                            1);			/* numSamples */
+
+    v->depth = colDepth;
+    v->db_flag = dbFlag;
+    v->rgb_flag = rgbFlag;
+
+    v->zbuffer = (depthSize > 0) ? 1 : 0;
+#ifdef MATROX
+    mga_get(MGA_GET_HPIXELS, &v->stride_in_pixels);
+    if (depthSize == 16) {
+       v->zbuffer = -1;
+    }
+#endif
+ }
+
+ return v;
+
+#else  /* FX */
+
+ int i = 0, fx_attrib[32];
+
+ if (!rgbFlag) {
+    return NULL;
+ }
+
+ if (dbFlag) fx_attrib[i++] = FXMESA_DOUBLEBUFFER;
+ if (depthSize > 0) { fx_attrib[i++] = FXMESA_DEPTH_SIZE; fx_attrib[i++] = depthSize; }
+ if (stencilSize > 0) { fx_attrib[i++] = FXMESA_STENCIL_SIZE; fx_attrib[i++] = stencilSize; }
+ if (accumSize > 0) { fx_attrib[i++] = FXMESA_ACCUM_SIZE; fx_attrib[i++] = accumSize; }
+ if (alphaFlag) { fx_attrib[i++] = FXMESA_ALPHA_SIZE; fx_attrib[i++] = 1; }
+ fx_attrib[i] = FXMESA_NONE;
+
+ return (DMesaVisual)fxMesaCreateBestContext(-1, width, height, fx_attrib);
+#endif /* FX */
+}
+
+
+
+void DMesaDestroyVisual (DMesaVisual v)
+{
+#ifndef FX
+ _mesa_destroy_visual((GLvisual *)v);
+
+#ifndef MATROX
+ vl_video_exit();
+#else
+ mga_close(1, 1);
+#endif
+
+#else
+ fxMesaDestroyContext((fxMesaContext)v);
+#endif
+}
+
+
+
+DMesaBuffer DMesaCreateBuffer (DMesaVisual visual,
+                               GLint xpos, GLint ypos,
+                               GLint width, GLint height)
+{
+#ifndef FX
+ DMesaBuffer b;
+
+ if ((b=(DMesaBuffer)CALLOC_STRUCT(dmesa_buffer)) != NULL) {
+    _mesa_initialize_framebuffer((GLframebuffer *)b,
+                                 (GLvisual *)visual,
+                                 visual->zbuffer == 1,
+                                 ((GLvisual *)visual)->stencilBits > 0,
+                                 ((GLvisual *)visual)->accumRedBits > 0,
+                                 ((GLvisual *)visual)->alphaBits > 0);
+    b->xpos = xpos;
+    b->ypos = ypos;
+    b->width = width;
+    b->height = height;
+ }
+
+ return b;
+#else
+ return (DMesaBuffer)visual;
+#endif
+}
+
+
+
+void DMesaDestroyBuffer (DMesaBuffer b)
+{
+#ifndef FX
+#ifndef MATROX
+ free(b->the_window);
+#endif
+ _mesa_destroy_framebuffer((GLframebuffer *)b);
+#endif
+}
+
+
+
+DMesaContext DMesaCreateContext (DMesaVisual visual,
+                                 DMesaContext share)
+{
+#ifndef FX
+ DMesaContext c;
+ GLboolean direct = GL_FALSE;
+
+ if ((c=(DMesaContext)CALLOC_STRUCT(dmesa_context)) != NULL) {
+    _mesa_initialize_context((GLcontext *)c,
+                             (GLvisual *)visual,
+                             (GLcontext *)share,
+                             (void *)c, direct);
+
+    _mesa_enable_sw_extensions((GLcontext *)c);
+    _mesa_enable_1_3_extensions((GLcontext *)c);
+    _mesa_enable_1_4_extensions((GLcontext *)c);
+
+    /* you probably have to do a bunch of other initializations here. */
+    c->visual = visual;
+
+    ((GLcontext *)c)->Driver.UpdateState = dmesa_update_state;
+
+    /* Initialize the software rasterizer and helper modules.
+     */
+    _swrast_CreateContext((GLcontext *)c);
+    _ac_CreateContext((GLcontext *)c);
+    _tnl_CreateContext((GLcontext *)c);
+    _swsetup_CreateContext((GLcontext *)c);
+    if (visual->rgb_flag) dmesa_register_swrast_functions((GLcontext *)c);
+    dmesa_init_pointers((GLcontext *)c);
+ }
+
+ return c;
+
+#else  /* FX */
+ return (DMesaContext)visual;
+#endif /* FX */
+}
+
+
+
+void DMesaDestroyContext (DMesaContext c)
+{
+#ifndef FX
+ if (c) {
+    _swsetup_DestroyContext((GLcontext *)c);
+    _swrast_DestroyContext((GLcontext *)c);
+    _tnl_DestroyContext((GLcontext *)c);
+    _ac_DestroyContext((GLcontext *)c);
+    _mesa_destroy_context((GLcontext *)c);
+ }
+#endif
+}
+
+
+
+GLboolean DMesaMoveBuffer (GLint xpos, GLint ypos)
+{
+#if !defined(FX) && !defined(MATROX)
+ GET_CURRENT_CONTEXT(ctx);
+ DMesaBuffer b = ((DMesaContext)ctx)->Buffer;
+
+ if (vl_sync_buffer(&b->the_window, xpos, ypos, b->width, b->height) != 0) {
+    return GL_FALSE;
+ } else {
+    b->xpos = xpos;
+    b->ypos = ypos;
+    return GL_TRUE;
+ }
+
+#else
+ return GL_FALSE;
+#endif
+}
+
+
+
+GLboolean DMesaResizeBuffer (GLint width, GLint height)
+{
+#if !defined(FX) && !defined(MATROX)
+ GET_CURRENT_CONTEXT(ctx);
+ DMesaBuffer b = ((DMesaContext)ctx)->Buffer;
+
+ if (vl_sync_buffer(&b->the_window, b->xpos, b->ypos, width, height) != 0) {
+    return GL_FALSE;
+ } else {
+    b->width = width;
+    b->height = height;
+    return GL_TRUE;
+ }
+
+#else
+ return GL_FALSE;
+#endif
+}
+
+
+
+/*
+ * Make the specified context and buffer the current one.
+ */
+GLboolean DMesaMakeCurrent (DMesaContext c, DMesaBuffer b)
+{
+#ifndef FX
+ if ((c != NULL) && (b != NULL)) {
+#ifndef MATROX
+    if (vl_sync_buffer(&b->the_window, b->xpos, b->ypos, b->width, b->height) != 0) {
+       return GL_FALSE;
+    }
+#endif
+
+    c->Buffer = b;
+
+    _mesa_make_current((GLcontext *)c, (GLframebuffer *)b);
+    if (((GLcontext *)c)->Viewport.Width == 0) {
+       /* initialize viewport to window size */
+       _mesa_Viewport(0, 0, b->width, b->height);
+    }
+ } else {
+    /* Detach */
+    _mesa_make_current(NULL, NULL);
+ }
+
+#else
+ fxMesaMakeCurrent((fxMesaContext)c);
+#endif
+
+ return GL_TRUE;
+}
+
+
+
+void DMesaSwapBuffers (DMesaBuffer b)
+{
+ /* copy/swap back buffer to front if applicable */
+#ifndef FX
+ GET_CURRENT_CONTEXT(ctx);
+ _mesa_notifySwapBuffers(ctx);
+#ifndef MATROX
+ vl_flip();
+#else
+ if (((DMesaContext)ctx)->visual->db_flag) {
+    mga_swapbuffers(1);
+ }
+#endif
+#else
+ fxMesaSwapBuffers();
+#endif
+}
+
+
+
+void DMesaSetCI (int ndx, GLfloat red, GLfloat green, GLfloat blue)
+{
+#if !defined(FX) && !defined(MATROX)
+ vl_setCI(ndx, red, green, blue);
+#endif
+}
+
+
+
+DMesaContext DMesaGetCurrentContext (void)
+{
+#ifndef FX
+ GET_CURRENT_CONTEXT(ctx);
+ return (DMesaContext)ctx;
+#else
+ return (DMesaContext)fxMesaGetCurrentContext();
+#endif
+}
+
+
+
+int DMesaGetIntegerv (GLenum pname, GLint *params)
+{
+#ifndef FX
+ GET_CURRENT_CONTEXT(ctx);
+ const DMesaContext c = (DMesaContext)ctx;
+#else
+ const fxMesaContext c = fxMesaGetCurrentContext();
+#endif
+
+ if (c == NULL) {
+    return -1;
+ }
+
+ switch (pname) {
+        case DMESA_GET_SCREEN_SIZE:
+             #ifndef FX
+             #ifndef MATROX
+             vl_get(VL_GET_SCREEN_SIZE, params);
+             #else
+             mga_get(MGA_GET_SCREEN_SIZE, params);
+             #endif
+             #else
+             params[0] = c->screen_width;
+             params[1] = c->screen_height;
+             #endif
+             break;
+        case DMESA_GET_DRIVER_CAPS:
+             #ifndef FX
+             #ifndef MATROX
+             params[0] = DMESA_DRIVER_SWDB_BIT;
+             #else
+             params[0] = 0;
+             #endif
+             #else
+             params[0] = DMESA_DRIVER_LLWO_BIT;
+             #endif
+             break;
+        default:
+             return -1;
+ }
+
+ return 0;
+}
diff --git a/src/mesa/drivers/dos/dpmi.c b/src/mesa/drivers/dos/dpmi.c
index 17c005a9e5..f9943ea60b 100644
--- a/src/mesa/drivers/dos/dpmi.c
+++ b/src/mesa/drivers/dos/dpmi.c
@@ -1,148 +1,148 @@
-/*

- * Mesa 3-D graphics library

- * Version:  4.0

- * 

- * Copyright (C) 1999  Brian Paul   All Rights Reserved.

- * 

- * Permission is hereby granted, free of charge, to any person obtaining a

- * copy of this software and associated documentation files (the "Software"),

- * to deal in the Software without restriction, including without limitation

- * the rights to use, copy, modify, merge, publish, distribute, sublicense,

- * and/or sell copies of the Software, and to permit persons to whom the

- * Software is furnished to do so, subject to the following conditions:

- * 

- * The above copyright notice and this permission notice shall be included

- * in all copies or substantial portions of the Software.

- * 

- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS

- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL

- * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN

- * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN

- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

- */

-

-/*

- * DOS/DJGPP device driver v1.3 for Mesa

- *

- *  Copyright (C) 2002 - Borca Daniel

- *  Email : dborca@yahoo.com

- *  Web   : http://www.geocities.com/dborca

- */

-

-

-#include <dpmi.h>

-

-#include "internal.h"

-

-

-

-#ifndef MAX

-#define MAX(x, y) (((x)<(y))?(y):(x))

-#endif

-

-

-

-/* _create_linear_mapping:

- *  Maps a physical address range into linear memory.

- */

-int _create_linear_mapping (unsigned long *linear, unsigned long physaddr, int size)

-{

- __dpmi_meminfo meminfo;

-

- if (physaddr >= 0x100000) {

-    /* map into linear memory */

-    meminfo.address = physaddr;

-    meminfo.size = size;

-    if (__dpmi_physical_address_mapping(&meminfo) != 0)

-       return -1;

-

-    *linear = meminfo.address;

- } else {

-    /* exploit 1 -> 1 physical to linear mapping in low megabyte */

-    *linear = physaddr;

- }

-

- return 0;

-}

-

-

-

-/* _remove_linear_mapping:

- *  Frees the DPMI resources being used to map a linear address range.

- */

-void _remove_linear_mapping (unsigned long *linear)

-{

- __dpmi_meminfo meminfo;

-

- if (*linear) {

-    if (*linear >= 0x100000) {

-       meminfo.address = *linear;

-       __dpmi_free_physical_address_mapping(&meminfo);

-    }

-

-    *linear = 0;

- }

-}

-

-

-

-/* _create_selector:

- *  Allocates a selector to access a region of linear memory.

- */

-int _create_selector (int *segment, unsigned long base, int size)

-{

- /* allocate an ldt descriptor */

- if ((*segment=__dpmi_allocate_ldt_descriptors(1)) < 0) {

-    *segment = 0;

-    return -1;

- }

-

- /* create the linear mapping */

- if (_create_linear_mapping(&base, base, size)) {

-    __dpmi_free_ldt_descriptor(*segment);

-    *segment = 0;

-    return -1;

- }

-

- /* set the descriptor base and limit */

- __dpmi_set_segment_base_address(*segment, base);

- __dpmi_set_segment_limit(*segment, MAX(size-1, 0xFFFF));

-

- return 0;

-}

-

-

-

-/* _remove_selector:

- *  Frees a DPMI segment selector.

- */

-void _remove_selector (int *segment)

-{

- if (*segment) {

-    unsigned long base;

-    __dpmi_get_segment_base_address(*segment, &base);

-    _remove_linear_mapping(&base);

-    __dpmi_free_ldt_descriptor(*segment);

-    *segment = 0;

- }

-}

-

-

-

-/* Desc: retrieve CPU MMX capability

- *

- * In  : -

- * Out : FALSE if CPU cannot do MMX

- *

- * Note: -

- */

-int _can_mmx (void)

-{

-#ifdef USE_MMX_ASM

- extern int _mesa_identify_x86_cpu_features (void);

- return (_mesa_identify_x86_cpu_features() & 0x00800000);

-#else

- return 0;

-#endif

-}

+/*
+ * Mesa 3-D graphics library
+ * Version:  4.0
+ * 
+ * Copyright (C) 1999  Brian Paul   All Rights Reserved.
+ * 
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ * 
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/*
+ * DOS/DJGPP device driver v1.4 for Mesa
+ *
+ *  Copyright (C) 2002 - Borca Daniel
+ *  Email : dborca@yahoo.com
+ *  Web   : http://www.geocities.com/dborca
+ */
+
+
+#include <dpmi.h>
+
+#include "internal.h"
+
+
+
+#ifndef MAX
+#define MAX(x, y) (((x)<(y))?(y):(x))
+#endif
+
+
+
+/* _create_linear_mapping:
+ *  Maps a physical address range into linear memory.
+ */
+int _create_linear_mapping (unsigned long *linear, unsigned long physaddr, int size)
+{
+ __dpmi_meminfo meminfo;
+
+ if (physaddr >= 0x100000) {
+    /* map into linear memory */
+    meminfo.address = physaddr;
+    meminfo.size = size;
+    if (__dpmi_physical_address_mapping(&meminfo) != 0)
+       return -1;
+
+    *linear = meminfo.address;
+ } else {
+    /* exploit 1 -> 1 physical to linear mapping in low megabyte */
+    *linear = physaddr;
+ }
+
+ return 0;
+}
+
+
+
+/* _remove_linear_mapping:
+ *  Frees the DPMI resources being used to map a linear address range.
+ */
+void _remove_linear_mapping (unsigned long *linear)
+{
+ __dpmi_meminfo meminfo;
+
+ if (*linear) {
+    if (*linear >= 0x100000) {
+       meminfo.address = *linear;
+       __dpmi_free_physical_address_mapping(&meminfo);
+    }
+
+    *linear = 0;
+ }
+}
+
+
+
+/* _create_selector:
+ *  Allocates a selector to access a region of linear memory.
+ */
+int _create_selector (int *segment, unsigned long base, int size)
+{
+ /* allocate an ldt descriptor */
+ if ((*segment=__dpmi_allocate_ldt_descriptors(1)) < 0) {
+    *segment = 0;
+    return -1;
+ }
+
+ /* create the linear mapping */
+ if (_create_linear_mapping(&base, base, size)) {
+    __dpmi_free_ldt_descriptor(*segment);
+    *segment = 0;
+    return -1;
+ }
+
+ /* set the descriptor base and limit */
+ __dpmi_set_segment_base_address(*segment, base);
+ __dpmi_set_segment_limit(*segment, MAX(size-1, 0xFFFF));
+
+ return 0;
+}
+
+
+
+/* _remove_selector:
+ *  Frees a DPMI segment selector.
+ */
+void _remove_selector (int *segment)
+{
+ if (*segment) {
+    unsigned long base;
+    __dpmi_get_segment_base_address(*segment, &base);
+    _remove_linear_mapping(&base);
+    __dpmi_free_ldt_descriptor(*segment);
+    *segment = 0;
+ }
+}
+
+
+
+/* Desc: retrieve CPU MMX capability
+ *
+ * In  : -
+ * Out : FALSE if CPU cannot do MMX
+ *
+ * Note: -
+ */
+int _can_mmx (void)
+{
+#ifdef USE_MMX_ASM
+ extern int _mesa_x86_cpu_features;
+ return (_mesa_x86_cpu_features & 0x00800000);
+#else
+ return 0;
+#endif
+}
diff --git a/src/mesa/drivers/dos/internal.h b/src/mesa/drivers/dos/internal.h
index 6860ef3584..dfb9274ecc 100644
--- a/src/mesa/drivers/dos/internal.h
+++ b/src/mesa/drivers/dos/internal.h
@@ -1,129 +1,129 @@
-/*

- * Mesa 3-D graphics library

- * Version:  4.0

- * 

- * Copyright (C) 1999  Brian Paul   All Rights Reserved.

- * 

- * Permission is hereby granted, free of charge, to any person obtaining a

- * copy of this software and associated documentation files (the "Software"),

- * to deal in the Software without restriction, including without limitation

- * the rights to use, copy, modify, merge, publish, distribute, sublicense,

- * and/or sell copies of the Software, and to permit persons to whom the

- * Software is furnished to do so, subject to the following conditions:

- * 

- * The above copyright notice and this permission notice shall be included

- * in all copies or substantial portions of the Software.

- * 

- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS

- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL

- * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN

- * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN

- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

- */

-

-/*

- * DOS/DJGPP device driver v1.3 for Mesa

- *

- *  Copyright (C) 2002 - Borca Daniel

- *  Email : dborca@yahoo.com

- *  Web   : http://www.geocities.com/dborca

- */

-

-

-#ifndef INTERNAL_H_included

-#define INTERNAL_H_included

-

-#include "../mmath.h"

-

-/*

- * general purpose defines, etc.

- */

-#ifndef FALSE

-#define FALSE 0

-#define TRUE !FALSE

-#endif

-

-#define __PACKED__ __attribute__((packed))

-

-typedef unsigned char word8;

-typedef unsigned short word16;

-typedef unsigned long word32;

-

-#define _16_ *(word16 *)&

-#define _32_ *(word32 *)&

-

-

-

-/*

- * video mode structure

- */

-typedef struct vl_mode {

-        int mode;

-        int xres, yres;

-        int scanlen;

-        int bpp;

-

-        int sel;

-        int gran;

-} vl_mode;

-

-

-

-/*

- * video driver structure

- */

-typedef struct {

-        vl_mode *(*init) (void);

-        int (*entermode) (vl_mode *p, int refresh);

-        void (*blit) (void);

-        void (*setCI_f) (int index, float red, float green, float blue);

-        void (*setCI_i) (int index, int red, int green, int blue);

-        int (*get) (int pname, int *params);

-        void (*restore) (void);

-        void (*fini) (void);

-} vl_driver;

-

-

-

-/*

- * memory mapping

- */

-int _create_linear_mapping (unsigned long *linear, unsigned long physaddr, int size);

-void _remove_linear_mapping (unsigned long *linear);

-int _create_selector (int *segment, unsigned long base, int size);

-void _remove_selector (int *segment);

-

-/*

- * system routines

- */

-int _can_mmx (void);

-

-/*

- * asm routines to deal with virtual buffering

- */

-extern void v_clear8 (int color);

-#define v_clear15 v_clear16

-extern void v_clear16 (int color);

-extern void v_clear24 (int color);

-extern void v_clear32 (int color);

-

-extern void v_clear8_mmx (int color);

-#define v_clear15_mmx v_clear16_mmx

-extern void v_clear16_mmx (int color);

-extern void v_clear24_mmx (int color);

-extern void v_clear32_mmx (int color);

-

-extern void v_rect8 (int x, int y, int width, int height, int color);

-#define v_rect15 v_rect16

-extern void v_rect16 (int x, int y, int width, int height, int color);

-extern void v_rect24 (int x, int y, int width, int height, int color);

-extern void v_rect32 (int x, int y, int width, int height, int color);

-

-extern void v_putpixel8 (unsigned int offset, int color);

-#define v_putpixel15 v_putpixel16

-extern void v_putpixel16 (unsigned int offset, int color);

-extern void v_putpixel24 (unsigned int offset, int color);

-extern void v_putpixel32 (unsigned int offset, int color);

-

-#endif

+/*
+ * Mesa 3-D graphics library
+ * Version:  4.0
+ * 
+ * Copyright (C) 1999  Brian Paul   All Rights Reserved.
+ * 
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ * 
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/*
+ * DOS/DJGPP device driver v1.4 for Mesa
+ *
+ *  Copyright (C) 2002 - Borca Daniel
+ *  Email : dborca@yahoo.com
+ *  Web   : http://www.geocities.com/dborca
+ */
+
+
+#ifndef INTERNAL_H_included
+#define INTERNAL_H_included
+
+#include "../main/mtypes.h"
+
+/*
+ * general purpose defines, etc.
+ */
+#ifndef FALSE
+#define FALSE 0
+#define TRUE !FALSE
+#endif
+
+#define __PACKED__ __attribute__((packed))
+
+typedef unsigned char word8;
+typedef unsigned short word16;
+typedef unsigned long word32;
+
+#define _16_ *(word16 *)&
+#define _32_ *(word32 *)&
+
+
+
+/*
+ * video mode structure
+ */
+typedef struct vl_mode {
+        int mode;
+        int xres, yres;
+        int scanlen;
+        int bpp;
+
+        int sel;
+        int gran;
+} vl_mode;
+
+
+
+/*
+ * video driver structure
+ */
+typedef struct {
+        vl_mode *(*init) (void);
+        int (*entermode) (vl_mode *p, int refresh);
+        void (*blit) (void);
+        void (*setCI_f) (int index, float red, float green, float blue);
+        void (*setCI_i) (int index, int red, int green, int blue);
+        int (*get) (int pname, int *params);
+        void (*restore) (void);
+        void (*fini) (void);
+} vl_driver;
+
+
+
+/*
+ * memory mapping
+ */
+int _create_linear_mapping (unsigned long *linear, unsigned long physaddr, int size);
+void _remove_linear_mapping (unsigned long *linear);
+int _create_selector (int *segment, unsigned long base, int size);
+void _remove_selector (int *segment);
+
+/*
+ * system routines
+ */
+int _can_mmx (void);
+
+/*
+ * asm routines to deal with virtual buffering
+ */
+extern void v_clear8 (int color);
+#define v_clear15 v_clear16
+extern void v_clear16 (int color);
+extern void v_clear24 (int color);
+extern void v_clear32 (int color);
+
+extern void v_clear8_mmx (int color);
+#define v_clear15_mmx v_clear16_mmx
+extern void v_clear16_mmx (int color);
+extern void v_clear24_mmx (int color);
+extern void v_clear32_mmx (int color);
+
+extern void v_rect8 (int x, int y, int width, int height, int color);
+#define v_rect15 v_rect16
+extern void v_rect16 (int x, int y, int width, int height, int color);
+extern void v_rect24 (int x, int y, int width, int height, int color);
+extern void v_rect32 (int x, int y, int width, int height, int color);
+
+extern void v_putpixel8 (unsigned int offset, int color);
+#define v_putpixel15 v_putpixel16
+extern void v_putpixel16 (unsigned int offset, int color);
+extern void v_putpixel24 (unsigned int offset, int color);
+extern void v_putpixel32 (unsigned int offset, int color);
+
+#endif
diff --git a/src/mesa/drivers/dos/mga/m_ttemp.h b/src/mesa/drivers/dos/mga/m_ttemp.h
index 1c5fbda29a..90d9de3564 100644
--- a/src/mesa/drivers/dos/mga/m_ttemp.h
+++ b/src/mesa/drivers/dos/mga/m_ttemp.h
@@ -1,377 +1,377 @@
-/*

- * Mesa 3-D graphics library

- * Version:  5.0

- * 

- * Copyright (C) 1999-2002  Brian Paul   All Rights Reserved.

- * 

- * Permission is hereby granted, free of charge, to any person obtaining a

- * copy of this software and associated documentation files (the "Software"),

- * to deal in the Software without restriction, including without limitation

- * the rights to use, copy, modify, merge, publish, distribute, sublicense,

- * and/or sell copies of the Software, and to permit persons to whom the

- * Software is furnished to do so, subject to the following conditions:

- * 

- * The above copyright notice and this permission notice shall be included

- * in all copies or substantial portions of the Software.

- * 

- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS

- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL

- * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN

- * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN

- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

- */

-

-/*

- * DOS/DJGPP device driver v1.3 for Mesa  --  MGA2064W triangle template

- *

- *  Copyright (c) 2003 - Borca Daniel

- *  Email : dborca@yahoo.com

- *  Web   : http://www.geocities.com/dborca

- */

-

-

-/*

- * Triangle Rasterizer Template

- *

- * This file is #include'd to generate custom triangle rasterizers.

- *

- * The following macros may be defined to indicate what auxillary information

- * must be interplated across the triangle:

- *    INTERP_Z        - if defined, interpolate Z values

- *    INTERP_RGB      - if defined, interpolate RGB values

- *

- *    TAG             - function name

- *    CULL            - enable culling for: 0=no, 1=back, -1=front

- *

- *    SETUP_CODE      - to be executed once per triangle (usually HW init)

- *

- * For flatshaded primitives, the provoking vertex is the final one.

- * This code was designed for the origin to be in the upper-left corner.

- *

- * Inspired by triangle rasterizer code written by Brian Paul.

- */

-

-

-

-#define TRI_SWAP(a, b)        \

-do {                          \

-    const MGAvertex *tmp = a; \

-    a = b;                    \

-    b = tmp;                  \

-} while (0)

-

-void TAG (int cull, const MGAvertex *v1, const MGAvertex *v2, const MGAvertex *v3)

-{

- int area;

- int x1, y1, x2, y2, x3, y3;

- int eMaj_dx, eMaj_dy, eBot_dx, eBot_dy, eTop_dx, eTop_dy;

-#ifdef INTERP_RGB

-#define FIFO_CNT_RGB 3

- int eMaj_dr, eBot_dr, eMaj_dg, eBot_dg, eMaj_db, eBot_db;

- int drdx, drdy, dgdx, dgdy, dbdx, dbdy;

-#else

-#define FIFO_CNT_RGB 0

-#endif

-#ifdef INTERP_Z

-#define FIFO_CNT_Z 1

- int dzdx, dzdy;

- int eMaj_dz, eBot_dz;

- int z1, z2, z3;

-#else

-#define FIFO_CNT_Z 0

-#endif

-

-#if defined(INTERP_Z) || defined(INTERP_RGB)

- double one_area;

-#ifndef INTERP_RGB

- int red = v3->color[0];

- int green = v3->color[1];

- int blue = v3->color[2];

-#endif

-#else

- unsigned long color = mga_mixrgb_full(v3->color);

-#endif

-

- int sgn = 0;

-

- /* sort along the vertical axis */

- if (v2->win[1] < v1->win[1]) {

-    TRI_SWAP(v1, v2);

-#ifdef CULL

-    cull = -cull;

-#endif

- }

-

- if (v3->win[1] < v1->win[1]) {

-    TRI_SWAP(v1, v3);

-    TRI_SWAP(v2, v3);

- } else if (v3->win[1] < v2->win[1]) {

-    TRI_SWAP(v2, v3);

-#ifdef CULL

-    cull = -cull;

-#endif    

- }

-

- x1 = v1->win[0];

- y1 = v1->win[1];

- x2 = v2->win[0];

- y2 = v2->win[1];

- x3 = v3->win[0];

- y3 = v3->win[1];

-

- /* compute deltas for each edge */

- eMaj_dx = x3 - x1;

- eMaj_dy = y3 - y1;

- eBot_dx = x2 - x1;

- eBot_dy = y2 - y1;

- eTop_dx = x3 - x2;

- eTop_dy = y3 - y2;

-

- /* compute area */

- if ((area = eMaj_dx * eBot_dy - eBot_dx * eMaj_dy) == 0) {

-    return;

- }

-#ifdef CULL

- if ((area * cull) > 0) {

-    return;

- }

-#endif

-

- mga_select();

-

- /* set engine state */

-#ifdef SETUP_CODE

- SETUP_CODE

-#endif

-

- /* draw lower triangle */

-#if defined(INTERP_Z) || defined(INTERP_RGB)

- one_area = (double)(1<<15) / (double)area;

- mga_fifo(1);

-#else

- mga_fifo(2);

- mga_outl(M_FCOL, color);

-#endif

- mga_outl(M_YDST, y1);

-

-#ifdef INTERP_Z

- z1 = v1->win[2];

- z2 = v2->win[2];

- z3 = v3->win[2];

-

- /* compute d?/dx and d?/dy derivatives */

- eMaj_dz = z3 - z1;

- eBot_dz = z2 - z1;

- dzdx = (eMaj_dz * eBot_dy - eMaj_dy * eBot_dz) * one_area;

- dzdy = (eMaj_dx * eBot_dz - eMaj_dz * eBot_dx) * one_area;

-

-#ifndef INTERP_RGB

- mga_fifo(11);

- mga_outl(M_DR2, dzdx);

- mga_outl(M_DR3, dzdy);

- mga_outl(M_DR4, red<<15);

- mga_outl(M_DR6, 0);

- mga_outl(M_DR7, 0);

- mga_outl(M_DR8, green<<15);

- mga_outl(M_DR10, 0);

- mga_outl(M_DR11, 0);

- mga_outl(M_DR12, blue<<15);

- mga_outl(M_DR14, 0);

- mga_outl(M_DR15, 0);

-#else

- mga_fifo(2);

- mga_outl(M_DR2, dzdx);

- mga_outl(M_DR3, dzdy);

-#endif

-#endif

-

-#ifdef INTERP_RGB

- /* compute color deltas */

- eMaj_dr = v3->color[0] - v1->color[0];

- eBot_dr = v2->color[0] - v1->color[0];

- eMaj_dg = v3->color[1] - v1->color[1];

- eBot_dg = v2->color[1] - v1->color[1];

- eMaj_db = v3->color[2] - v1->color[2];

- eBot_db = v2->color[2] - v1->color[2];

-

- /* compute color increments */

- drdx = (eMaj_dr * eBot_dy - eMaj_dy * eBot_dr) * one_area;

- drdy = (eMaj_dx * eBot_dr - eMaj_dr * eBot_dx) * one_area;

- dgdx = (eMaj_dg * eBot_dy - eMaj_dy * eBot_dg) * one_area;

- dgdy = (eMaj_dx * eBot_dg - eMaj_dg * eBot_dx) * one_area;

- dbdx = (eMaj_db * eBot_dy - eMaj_dy * eBot_db) * one_area;

- dbdy = (eMaj_dx * eBot_db - eMaj_db * eBot_dx) * one_area;

-

- mga_fifo(6);

- mga_outl(M_DR6, drdx);

- mga_outl(M_DR7, drdy);

- mga_outl(M_DR10, dgdx);

- mga_outl(M_DR11, dgdy);

- mga_outl(M_DR14, dbdx);

- mga_outl(M_DR15, dbdy);

-#endif

-

- if (area > 0) { /* major edge on the right */

-    if (eBot_dy) { /* have lower triangle */

-       mga_fifo(9 + FIFO_CNT_Z + FIFO_CNT_RGB);

-

-       mga_outl(M_AR0, eBot_dy);

-       if (x2 < x1) {

-          mga_outl(M_AR1, eBot_dx + eBot_dy - 1);

-          mga_outl(M_AR2, eBot_dx);

-          sgn |= M_SDXL;

-       } else {

-          mga_outl(M_AR1, -eBot_dx);

-          mga_outl(M_AR2, -eBot_dx);

-       }

-

-       mga_outl(M_AR6, eMaj_dy);

-       if (x3 < x1) {

-          mga_outl(M_AR4, eMaj_dx + eMaj_dy - 1);

-          mga_outl(M_AR5, eMaj_dx);

-          sgn |= M_SDXR;

-       } else {

-          mga_outl(M_AR4, -eMaj_dx);

-          mga_outl(M_AR5, -eMaj_dx);

-       }

-

-       mga_outl(M_FXBNDRY, (x1<<16) | x1);

-#ifdef INTERP_Z

-       mga_outl(M_DR0, z1<<15);

-#endif

-#ifdef INTERP_RGB

-       mga_outl(M_DR4, v1->color[0]<<15);

-       mga_outl(M_DR8, v1->color[1]<<15);

-       mga_outl(M_DR12, v1->color[2]<<15);

-#endif

-       mga_outl(M_SGN, sgn);

-       mga_outl(M_LEN | M_EXEC, eBot_dy);

-    } else { /* no lower triangle */

-       mga_fifo(4 + FIFO_CNT_Z + FIFO_CNT_RGB);

-

-       mga_outl(M_AR6, eMaj_dy);

-       if (x3 < x1) {

-          mga_outl(M_AR4, eMaj_dx + eMaj_dy - 1);

-          mga_outl(M_AR5, eMaj_dx);

-          sgn |= M_SDXR;

-       } else {

-          mga_outl(M_AR4, -eMaj_dx);

-          mga_outl(M_AR5, -eMaj_dx);

-       }

-

-       mga_outl(M_FXBNDRY, (x1<<16) | x2);

-#ifdef INTERP_Z

-       mga_outl(M_DR0, z2<<15);

-#endif

-#ifdef INTERP_RGB

-       mga_outl(M_DR4, v2->color[0]<<15);

-       mga_outl(M_DR8, v2->color[1]<<15);

-       mga_outl(M_DR12, v2->color[2]<<15);

-#endif

-    }

-

-    /* draw upper triangle */

-    if (eTop_dy) {

-       mga_fifo(5);

-       mga_outl(M_AR0, eTop_dy);

-       if (x3 < x2) {

-          mga_outl(M_AR1, eTop_dx + eTop_dy - 1);

-          mga_outl(M_AR2, eTop_dx);

-          sgn |= M_SDXL;

-       } else {

-          mga_outl(M_AR1, -eTop_dx);

-          mga_outl(M_AR2, -eTop_dx);

-          sgn &= ~M_SDXL;

-       }

-       mga_outl(M_SGN, sgn);

-       mga_outl(M_LEN | M_EXEC, eTop_dy);

-    }

- } else { /* major edge on the left */

-    if (eBot_dy) { /* have lower triangle */

-       mga_fifo(9 + FIFO_CNT_Z + FIFO_CNT_RGB);

-

-       mga_outl(M_AR0, eMaj_dy);

-       if (x3 < x1) {

-          mga_outl(M_AR1, eMaj_dx + eMaj_dy - 1);

-          mga_outl(M_AR2, eMaj_dx);

-          sgn |= M_SDXL;

-       } else {

-          mga_outl(M_AR1, -eMaj_dx);

-          mga_outl(M_AR2, -eMaj_dx);

-       }

-

-       mga_outl(M_AR6, eBot_dy);

-       if (x2 < x1) {

-          mga_outl(M_AR4, eBot_dx + eBot_dy - 1);

-          mga_outl(M_AR5, eBot_dx);

-          sgn |= M_SDXR;

-       } else {

-          mga_outl(M_AR4, -eBot_dx);

-          mga_outl(M_AR5, -eBot_dx);

-       }

-

-       mga_outl(M_FXBNDRY, (x1<<16) | x1);

-#ifdef INTERP_Z

-       mga_outl(M_DR0, z1<<15);

-#endif

-#ifdef INTERP_RGB

-       mga_outl(M_DR4, v1->color[0]<<15);

-       mga_outl(M_DR8, v1->color[1]<<15);

-       mga_outl(M_DR12, v1->color[2]<<15);

-#endif

-       mga_outl(M_SGN, sgn);

-       mga_outl(M_LEN | M_EXEC, eBot_dy);

-    } else { /* no lower triangle */

-       mga_fifo(4 + FIFO_CNT_Z + FIFO_CNT_RGB);

-

-       mga_outl(M_AR0, eMaj_dy);

-       if (x3 < x1) {

-          mga_outl(M_AR1, eMaj_dx + eMaj_dy - 1);

-          mga_outl(M_AR2, eMaj_dx);

-          sgn |= M_SDXL;

-       } else {

-          mga_outl(M_AR1, -eMaj_dx);

-          mga_outl(M_AR2, -eMaj_dx);

-       }

-

-       mga_outl(M_FXBNDRY, (x2<<16) | x1);

-#ifdef INTERP_Z

-       mga_outl(M_DR0, z1<<15);

-#endif

-#ifdef INTERP_RGB

-       mga_outl(M_DR4, v1->color[0]<<15);

-       mga_outl(M_DR8, v1->color[1]<<15);

-       mga_outl(M_DR12, v1->color[2]<<15);

-#endif

-    }

-

-    /* draw upper triangle */

-    if (eTop_dy) {

-       mga_fifo(5);

-       mga_outl(M_AR6, eTop_dy);

-       if (x3 < x2) {

-          mga_outl(M_AR4, eTop_dx + eTop_dy - 1);

-          mga_outl(M_AR5, eTop_dx);

-          sgn |= M_SDXR;

-       } else {

-          mga_outl(M_AR4, -eTop_dx);

-          mga_outl(M_AR5, -eTop_dx);

-          sgn &= ~M_SDXR;

-       }

-       mga_outl(M_SGN, sgn);

-       mga_outl(M_LEN | M_EXEC, eTop_dy);

-    }

- }

-}

-

-#undef FIFO_CNT_RGB

-#undef FIFO_CNT_Z

-

-#undef TRI_SWAP

-

-#undef SETUP_CODE

-#undef INTERP_RGB

-#undef INTERP_Z

-#undef CULL

-#undef TAG

+/*
+ * Mesa 3-D graphics library
+ * Version:  5.0
+ * 
+ * Copyright (C) 1999-2002  Brian Paul   All Rights Reserved.
+ * 
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ * 
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/*
+ * DOS/DJGPP device driver v1.3 for Mesa  --  MGA2064W triangle template
+ *
+ *  Copyright (c) 2003 - Borca Daniel
+ *  Email : dborca@yahoo.com
+ *  Web   : http://www.geocities.com/dborca
+ */
+
+
+/*
+ * Triangle Rasterizer Template
+ *
+ * This file is #include'd to generate custom triangle rasterizers.
+ *
+ * The following macros may be defined to indicate what auxillary information
+ * must be interplated across the triangle:
+ *    INTERP_Z        - if defined, interpolate Z values
+ *    INTERP_RGB      - if defined, interpolate RGB values
+ *
+ *    TAG             - function name
+ *    CULL            - enable culling for: 0=no, 1=back, -1=front
+ *
+ *    SETUP_CODE      - to be executed once per triangle (usually HW init)
+ *
+ * For flatshaded primitives, the provoking vertex is the final one.
+ * This code was designed for the origin to be in the upper-left corner.
+ *
+ * Inspired by triangle rasterizer code written by Brian Paul.
+ */
+
+
+
+#define TRI_SWAP(a, b)        \
+do {                          \
+    const MGAvertex *tmp = a; \
+    a = b;                    \
+    b = tmp;                  \
+} while (0)
+
+void TAG (int cull, const MGAvertex *v1, const MGAvertex *v2, const MGAvertex *v3)
+{
+ int area;
+ int x1, y1, x2, y2, x3, y3;
+ int eMaj_dx, eMaj_dy, eBot_dx, eBot_dy, eTop_dx, eTop_dy;
+#ifdef INTERP_RGB
+#define FIFO_CNT_RGB 3
+ int eMaj_dr, eBot_dr, eMaj_dg, eBot_dg, eMaj_db, eBot_db;
+ int drdx, drdy, dgdx, dgdy, dbdx, dbdy;
+#else
+#define FIFO_CNT_RGB 0
+#endif
+#ifdef INTERP_Z
+#define FIFO_CNT_Z 1
+ int dzdx, dzdy;
+ int eMaj_dz, eBot_dz;
+ int z1, z2, z3;
+#else
+#define FIFO_CNT_Z 0
+#endif
+
+#if defined(INTERP_Z) || defined(INTERP_RGB)
+ double one_area;
+#ifndef INTERP_RGB
+ int red = v3->color[0];
+ int green = v3->color[1];
+ int blue = v3->color[2];
+#endif
+#else
+ unsigned long color = mga_mixrgb_full(v3->color);
+#endif
+
+ int sgn = 0;
+
+ /* sort along the vertical axis */
+ if (v2->win[1] < v1->win[1]) {
+    TRI_SWAP(v1, v2);
+#ifdef CULL
+    cull = -cull;
+#endif
+ }
+
+ if (v3->win[1] < v1->win[1]) {
+    TRI_SWAP(v1, v3);
+    TRI_SWAP(v2, v3);
+ } else if (v3->win[1] < v2->win[1]) {
+    TRI_SWAP(v2, v3);
+#ifdef CULL
+    cull = -cull;
+#endif    
+ }
+
+ x1 = v1->win[0];
+ y1 = v1->win[1];
+ x2 = v2->win[0];
+ y2 = v2->win[1];
+ x3 = v3->win[0];
+ y3 = v3->win[1];
+
+ /* compute deltas for each edge */
+ eMaj_dx = x3 - x1;
+ eMaj_dy = y3 - y1;
+ eBot_dx = x2 - x1;
+ eBot_dy = y2 - y1;
+ eTop_dx = x3 - x2;
+ eTop_dy = y3 - y2;
+
+ /* compute area */
+ if ((area = eMaj_dx * eBot_dy - eBot_dx * eMaj_dy) == 0) {
+    return;
+ }
+#ifdef CULL
+ if ((area * cull) > 0) {
+    return;
+ }
+#endif
+
+ mga_select();
+
+ /* set engine state */
+#ifdef SETUP_CODE
+ SETUP_CODE
+#endif
+
+ /* draw lower triangle */
+#if defined(INTERP_Z) || defined(INTERP_RGB)
+ one_area = (double)(1<<15) / (double)area;
+ mga_fifo(1);
+#else
+ mga_fifo(2);
+ mga_outl(M_FCOL, color);
+#endif
+ mga_outl(M_YDST, y1);
+
+#ifdef INTERP_Z
+ z1 = v1->win[2];
+ z2 = v2->win[2];
+ z3 = v3->win[2];
+
+ /* compute d?/dx and d?/dy derivatives */
+ eMaj_dz = z3 - z1;
+ eBot_dz = z2 - z1;
+ dzdx = (eMaj_dz * eBot_dy - eMaj_dy * eBot_dz) * one_area;
+ dzdy = (eMaj_dx * eBot_dz - eMaj_dz * eBot_dx) * one_area;
+
+#ifndef INTERP_RGB
+ mga_fifo(11);
+ mga_outl(M_DR2, dzdx);
+ mga_outl(M_DR3, dzdy);
+ mga_outl(M_DR4, red<<15);
+ mga_outl(M_DR6, 0);
+ mga_outl(M_DR7, 0);
+ mga_outl(M_DR8, green<<15);
+ mga_outl(M_DR10, 0);
+ mga_outl(M_DR11, 0);
+ mga_outl(M_DR12, blue<<15);
+ mga_outl(M_DR14, 0);
+ mga_outl(M_DR15, 0);
+#else
+ mga_fifo(2);
+ mga_outl(M_DR2, dzdx);
+ mga_outl(M_DR3, dzdy);
+#endif
+#endif
+
+#ifdef INTERP_RGB
+ /* compute color deltas */
+ eMaj_dr = v3->color[0] - v1->color[0];
+ eBot_dr = v2->color[0] - v1->color[0];
+ eMaj_dg = v3->color[1] - v1->color[1];
+ eBot_dg = v2->color[1] - v1->color[1];
+ eMaj_db = v3->color[2] - v1->color[2];
+ eBot_db = v2->color[2] - v1->color[2];
+
+ /* compute color increments */
+ drdx = (eMaj_dr * eBot_dy - eMaj_dy * eBot_dr) * one_area;
+ drdy = (eMaj_dx * eBot_dr - eMaj_dr * eBot_dx) * one_area;
+ dgdx = (eMaj_dg * eBot_dy - eMaj_dy * eBot_dg) * one_area;
+ dgdy = (eMaj_dx * eBot_dg - eMaj_dg * eBot_dx) * one_area;
+ dbdx = (eMaj_db * eBot_dy - eMaj_dy * eBot_db) * one_area;
+ dbdy = (eMaj_dx * eBot_db - eMaj_db * eBot_dx) * one_area;
+
+ mga_fifo(6);
+ mga_outl(M_DR6, drdx);
+ mga_outl(M_DR7, drdy);
+ mga_outl(M_DR10, dgdx);
+ mga_outl(M_DR11, dgdy);
+ mga_outl(M_DR14, dbdx);
+ mga_outl(M_DR15, dbdy);
+#endif
+
+ if (area > 0) { /* major edge on the right */
+    if (eBot_dy) { /* have lower triangle */
+       mga_fifo(9 + FIFO_CNT_Z + FIFO_CNT_RGB);
+
+       mga_outl(M_AR0, eBot_dy);
+       if (x2 < x1) {
+          mga_outl(M_AR1, eBot_dx + eBot_dy - 1);
+          mga_outl(M_AR2, eBot_dx);
+          sgn |= M_SDXL;
+       } else {
+          mga_outl(M_AR1, -eBot_dx);
+          mga_outl(M_AR2, -eBot_dx);
+       }
+
+       mga_outl(M_AR6, eMaj_dy);
+       if (x3 < x1) {
+          mga_outl(M_AR4, eMaj_dx + eMaj_dy - 1);
+          mga_outl(M_AR5, eMaj_dx);
+          sgn |= M_SDXR;
+       } else {
+          mga_outl(M_AR4, -eMaj_dx);
+          mga_outl(M_AR5, -eMaj_dx);
+       }
+
+       mga_outl(M_FXBNDRY, (x1<<16) | x1);
+#ifdef INTERP_Z
+       mga_outl(M_DR0, z1<<15);
+#endif
+#ifdef INTERP_RGB
+       mga_outl(M_DR4, v1->color[0]<<15);
+       mga_outl(M_DR8, v1->color[1]<<15);
+       mga_outl(M_DR12, v1->color[2]<<15);
+#endif
+       mga_outl(M_SGN, sgn);
+       mga_outl(M_LEN | M_EXEC, eBot_dy);
+    } else { /* no lower triangle */
+       mga_fifo(4 + FIFO_CNT_Z + FIFO_CNT_RGB);
+
+       mga_outl(M_AR6, eMaj_dy);
+       if (x3 < x1) {
+          mga_outl(M_AR4, eMaj_dx + eMaj_dy - 1);
+          mga_outl(M_AR5, eMaj_dx);
+          sgn |= M_SDXR;
+       } else {
+          mga_outl(M_AR4, -eMaj_dx);
+          mga_outl(M_AR5, -eMaj_dx);
+       }
+
+       mga_outl(M_FXBNDRY, (x1<<16) | x2);
+#ifdef INTERP_Z
+       mga_outl(M_DR0, z2<<15);
+#endif
+#ifdef INTERP_RGB
+       mga_outl(M_DR4, v2->color[0]<<15);
+       mga_outl(M_DR8, v2->color[1]<<15);
+       mga_outl(M_DR12, v2->color[2]<<15);
+#endif
+    }
+
+    /* draw upper triangle */
+    if (eTop_dy) {
+       mga_fifo(5);
+       mga_outl(M_AR0, eTop_dy);
+       if (x3 < x2) {
+          mga_outl(M_AR1, eTop_dx + eTop_dy - 1);
+          mga_outl(M_AR2, eTop_dx);
+          sgn |= M_SDXL;
+       } else {
+          mga_outl(M_AR1, -eTop_dx);
+          mga_outl(M_AR2, -eTop_dx);
+          sgn &= ~M_SDXL;
+       }
+       mga_outl(M_SGN, sgn);
+       mga_outl(M_LEN | M_EXEC, eTop_dy);
+    }
+ } else { /* major edge on the left */
+    if (eBot_dy) { /* have lower triangle */
+       mga_fifo(9 + FIFO_CNT_Z + FIFO_CNT_RGB);
+
+       mga_outl(M_AR0, eMaj_dy);
+       if (x3 < x1) {
+          mga_outl(M_AR1, eMaj_dx + eMaj_dy - 1);
+          mga_outl(M_AR2, eMaj_dx);
+          sgn |= M_SDXL;
+       } else {
+          mga_outl(M_AR1, -eMaj_dx);
+          mga_outl(M_AR2, -eMaj_dx);
+       }
+
+       mga_outl(M_AR6, eBot_dy);
+       if (x2 < x1) {
+          mga_outl(M_AR4, eBot_dx + eBot_dy - 1);
+          mga_outl(M_AR5, eBot_dx);
+          sgn |= M_SDXR;
+       } else {
+          mga_outl(M_AR4, -eBot_dx);
+          mga_outl(M_AR5, -eBot_dx);
+       }
+
+       mga_outl(M_FXBNDRY, (x1<<16) | x1);
+#ifdef INTERP_Z
+       mga_outl(M_DR0, z1<<15);
+#endif
+#ifdef INTERP_RGB
+       mga_outl(M_DR4, v1->color[0]<<15);
+       mga_outl(M_DR8, v1->color[1]<<15);
+       mga_outl(M_DR12, v1->color[2]<<15);
+#endif
+       mga_outl(M_SGN, sgn);
+       mga_outl(M_LEN | M_EXEC, eBot_dy);
+    } else { /* no lower triangle */
+       mga_fifo(4 + FIFO_CNT_Z + FIFO_CNT_RGB);
+
+       mga_outl(M_AR0, eMaj_dy);
+       if (x3 < x1) {
+          mga_outl(M_AR1, eMaj_dx + eMaj_dy - 1);
+          mga_outl(M_AR2, eMaj_dx);
+          sgn |= M_SDXL;
+       } else {
+          mga_outl(M_AR1, -eMaj_dx);
+          mga_outl(M_AR2, -eMaj_dx);
+       }
+
+       mga_outl(M_FXBNDRY, (x2<<16) | x1);
+#ifdef INTERP_Z
+       mga_outl(M_DR0, z1<<15);
+#endif
+#ifdef INTERP_RGB
+       mga_outl(M_DR4, v1->color[0]<<15);
+       mga_outl(M_DR8, v1->color[1]<<15);
+       mga_outl(M_DR12, v1->color[2]<<15);
+#endif
+    }
+
+    /* draw upper triangle */
+    if (eTop_dy) {
+       mga_fifo(5);
+       mga_outl(M_AR6, eTop_dy);
+       if (x3 < x2) {
+          mga_outl(M_AR4, eTop_dx + eTop_dy - 1);
+          mga_outl(M_AR5, eTop_dx);
+          sgn |= M_SDXR;
+       } else {
+          mga_outl(M_AR4, -eTop_dx);
+          mga_outl(M_AR5, -eTop_dx);
+          sgn &= ~M_SDXR;
+       }
+       mga_outl(M_SGN, sgn);
+       mga_outl(M_LEN | M_EXEC, eTop_dy);
+    }
+ }
+}
+
+#undef FIFO_CNT_RGB
+#undef FIFO_CNT_Z
+
+#undef TRI_SWAP
+
+#undef SETUP_CODE
+#undef INTERP_RGB
+#undef INTERP_Z
+#undef CULL
+#undef TAG
diff --git a/src/mesa/drivers/dos/mga/m_ttemp2.h b/src/mesa/drivers/dos/mga/m_ttemp2.h
index 2933f2b1a9..13ca87d348 100644
--- a/src/mesa/drivers/dos/mga/m_ttemp2.h
+++ b/src/mesa/drivers/dos/mga/m_ttemp2.h
@@ -1,375 +1,375 @@
-/*

- * Mesa 3-D graphics library

- * Version:  5.0

- * 

- * Copyright (C) 1999-2002  Brian Paul   All Rights Reserved.

- * 

- * Permission is hereby granted, free of charge, to any person obtaining a

- * copy of this software and associated documentation files (the "Software"),

- * to deal in the Software without restriction, including without limitation

- * the rights to use, copy, modify, merge, publish, distribute, sublicense,

- * and/or sell copies of the Software, and to permit persons to whom the

- * Software is furnished to do so, subject to the following conditions:

- * 

- * The above copyright notice and this permission notice shall be included

- * in all copies or substantial portions of the Software.

- * 

- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS

- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL

- * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN

- * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN

- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

- */

-

-/*

- * DOS/DJGPP device driver v1.3 for Mesa  --  MGA2064W triangle template

- *

- *  Copyright (c) 2003 - Borca Daniel

- *  Email : dborca@yahoo.com

- *  Web   : http://www.geocities.com/dborca

- */

-

-

-/*

- * Triangle Rasterizer Template

- *

- * This file is #include'd to generate custom triangle rasterizers.

- *

- * The following macros may be defined to indicate what auxillary information

- * must be interplated across the triangle:

- *    INTERP_Z        - if defined, interpolate Z values

- *    INTERP_RGB      - if defined, interpolate RGB values

- *

- *    TAG             - function name

- *    CULL            - enable culling for: 0=no, 1=back, -1=front

- *

- *    SETUP_CODE      - to be executed once per triangle (usually HW init)

- *

- * For flatshaded primitives, the provoking vertex is the final one.

- * This code was designed for the origin to be in the upper-left corner.

- *

- * Inspired by triangle rasterizer code written by Brian Paul.

- */

-

-

-

-#define TRI_SWAP(a, b)        \

-do {                          \

-    const MGAvertex *tmp = a; \

-    a = b;                    \

-    b = tmp;                  \

-} while (0)

-

-void TAG (int cull, const MGAvertex *v1, const MGAvertex *v2, const MGAvertex *v3)

-{

- int area;

- int x1, y1, x2, y2, x3, y3;

- int eMaj_dx, eMaj_dy, eBot_dx, eBot_dy, eTop_dx, eTop_dy;

-#ifdef INTERP_RGB

-#define FIFO_CNT_RGB 3

- int eMaj_dr, eBot_dr, eMaj_dg, eBot_dg, eMaj_db, eBot_db;

- int drdx, drdy, dgdx, dgdy, dbdx, dbdy;

-#else

-#define FIFO_CNT_RGB 0

-#endif

-#ifdef INTERP_Z

-#define FIFO_CNT_Z 1

- int dzdx, dzdy;

- int eMaj_dz, eBot_dz;

- int z1, z2, z3;

-#else

-#define FIFO_CNT_Z 0

-#endif

-

-#if defined(INTERP_Z) || defined(INTERP_RGB)

-#ifndef INTERP_RGB

- int red = v3->color[0];

- int green = v3->color[1];

- int blue = v3->color[2];

-#endif

-#else

- unsigned long color = mga_mixrgb_full(v3->color);

-#endif

-

- int sgn = 0;

-

- /* sort along the vertical axis */

- if (v2->win[1] < v1->win[1]) {

-    TRI_SWAP(v1, v2);

-#ifdef CULL

-    cull = -cull;

-#endif

- }

-

- if (v3->win[1] < v1->win[1]) {

-    TRI_SWAP(v1, v3);

-    TRI_SWAP(v2, v3);

- } else if (v3->win[1] < v2->win[1]) {

-    TRI_SWAP(v2, v3);

-#ifdef CULL

-    cull = -cull;

-#endif    

- }

-

- x1 = v1->win[0];

- y1 = v1->win[1];

- x2 = v2->win[0];

- y2 = v2->win[1];

- x3 = v3->win[0];

- y3 = v3->win[1];

-

- /* compute deltas for each edge */

- eMaj_dx = x3 - x1;

- eMaj_dy = y3 - y1;

- eBot_dx = x2 - x1;

- eBot_dy = y2 - y1;

- eTop_dx = x3 - x2;

- eTop_dy = y3 - y2;

-

- /* compute area */

- if ((area = eMaj_dx * eBot_dy - eBot_dx * eMaj_dy) == 0) {

-    return;

- }

-#ifdef CULL

- if ((area * cull) > 0) {

-    return;

- }

-#endif

-

- mga_select();

-

- /* set engine state */

-#ifdef SETUP_CODE

- SETUP_CODE

-#endif

-

- /* draw lower triangle */

-#if defined(INTERP_Z) || defined(INTERP_RGB)

- mga_fifo(1);

-#else

- mga_fifo(2);

- mga_outl(M_FCOL, color);

-#endif

- mga_outl(M_YDST, y1);

-

-#ifdef INTERP_Z

- z1 = v1->win[2];

- z2 = v2->win[2];

- z3 = v3->win[2];

-

- /* compute d?/dx and d?/dy derivatives */

- eMaj_dz = z3 - z1;

- eBot_dz = z2 - z1;

- dzdx = ((long long)(eMaj_dz * eBot_dy - eMaj_dy * eBot_dz)<<15) / area;

- dzdy = ((long long)(eMaj_dx * eBot_dz - eMaj_dz * eBot_dx)<<15) / area;

-

-#ifndef INTERP_RGB

- mga_fifo(11);

- mga_outl(M_DR2, dzdx);

- mga_outl(M_DR3, dzdy);

- mga_outl(M_DR4, red<<15);

- mga_outl(M_DR6, 0);

- mga_outl(M_DR7, 0);

- mga_outl(M_DR8, green<<15);

- mga_outl(M_DR10, 0);

- mga_outl(M_DR11, 0);

- mga_outl(M_DR12, blue<<15);

- mga_outl(M_DR14, 0);

- mga_outl(M_DR15, 0);

-#else

- mga_fifo(2);

- mga_outl(M_DR2, dzdx);

- mga_outl(M_DR3, dzdy);

-#endif

-#endif

-

-#ifdef INTERP_RGB

- /* compute color deltas */

- eMaj_dr = v3->color[0] - v1->color[0];

- eBot_dr = v2->color[0] - v1->color[0];

- eMaj_dg = v3->color[1] - v1->color[1];

- eBot_dg = v2->color[1] - v1->color[1];

- eMaj_db = v3->color[2] - v1->color[2];

- eBot_db = v2->color[2] - v1->color[2];

-

- /* compute color increments */

- drdx = ((long long)(eMaj_dr * eBot_dy - eMaj_dy * eBot_dr)<<15) / area;

- drdy = ((long long)(eMaj_dx * eBot_dr - eMaj_dr * eBot_dx)<<15) / area;

- dgdx = ((long long)(eMaj_dg * eBot_dy - eMaj_dy * eBot_dg)<<15) / area;

- dgdy = ((long long)(eMaj_dx * eBot_dg - eMaj_dg * eBot_dx)<<15) / area;

- dbdx = ((long long)(eMaj_db * eBot_dy - eMaj_dy * eBot_db)<<15) / area;

- dbdy = ((long long)(eMaj_dx * eBot_db - eMaj_db * eBot_dx)<<15) / area;

-

- mga_fifo(6);

- mga_outl(M_DR6, drdx);

- mga_outl(M_DR7, drdy);

- mga_outl(M_DR10, dgdx);

- mga_outl(M_DR11, dgdy);

- mga_outl(M_DR14, dbdx);

- mga_outl(M_DR15, dbdy);

-#endif

-

- if (area > 0) { /* major edge on the right */

-    if (eBot_dy) { /* have lower triangle */

-       mga_fifo(9 + FIFO_CNT_Z + FIFO_CNT_RGB);

-

-       mga_outl(M_AR0, eBot_dy);

-       if (x2 < x1) {

-          mga_outl(M_AR1, eBot_dx + eBot_dy - 1);

-          mga_outl(M_AR2, eBot_dx);

-          sgn |= M_SDXL;

-       } else {

-          mga_outl(M_AR1, -eBot_dx);

-          mga_outl(M_AR2, -eBot_dx);

-       }

-

-       mga_outl(M_AR6, eMaj_dy);

-       if (x3 < x1) {

-          mga_outl(M_AR4, eMaj_dx + eMaj_dy - 1);

-          mga_outl(M_AR5, eMaj_dx);

-          sgn |= M_SDXR;

-       } else {

-          mga_outl(M_AR4, -eMaj_dx);

-          mga_outl(M_AR5, -eMaj_dx);

-       }

-

-       mga_outl(M_FXBNDRY, (x1<<16) | x1);

-#ifdef INTERP_Z

-       mga_outl(M_DR0, z1<<15);

-#endif

-#ifdef INTERP_RGB

-       mga_outl(M_DR4, v1->color[0]<<15);

-       mga_outl(M_DR8, v1->color[1]<<15);

-       mga_outl(M_DR12, v1->color[2]<<15);

-#endif

-       mga_outl(M_SGN, sgn);

-       mga_outl(M_LEN | M_EXEC, eBot_dy);

-    } else { /* no lower triangle */

-       mga_fifo(4 + FIFO_CNT_Z + FIFO_CNT_RGB);

-

-       mga_outl(M_AR6, eMaj_dy);

-       if (x3 < x1) {

-          mga_outl(M_AR4, eMaj_dx + eMaj_dy - 1);

-          mga_outl(M_AR5, eMaj_dx);

-          sgn |= M_SDXR;

-       } else {

-          mga_outl(M_AR4, -eMaj_dx);

-          mga_outl(M_AR5, -eMaj_dx);

-       }

-

-       mga_outl(M_FXBNDRY, (x1<<16) | x2);

-#ifdef INTERP_Z

-       mga_outl(M_DR0, z2<<15);

-#endif

-#ifdef INTERP_RGB

-       mga_outl(M_DR4, v2->color[0]<<15);

-       mga_outl(M_DR8, v2->color[1]<<15);

-       mga_outl(M_DR12, v2->color[2]<<15);

-#endif

-    }

-

-    /* draw upper triangle */

-    if (eTop_dy) {

-       mga_fifo(5);

-       mga_outl(M_AR0, eTop_dy);

-       if (x3 < x2) {

-          mga_outl(M_AR1, eTop_dx + eTop_dy - 1);

-          mga_outl(M_AR2, eTop_dx);

-          sgn |= M_SDXL;

-       } else {

-          mga_outl(M_AR1, -eTop_dx);

-          mga_outl(M_AR2, -eTop_dx);

-          sgn &= ~M_SDXL;

-       }

-       mga_outl(M_SGN, sgn);

-       mga_outl(M_LEN | M_EXEC, eTop_dy);

-    }

- } else { /* major edge on the left */

-    if (eBot_dy) { /* have lower triangle */

-       mga_fifo(9 + FIFO_CNT_Z + FIFO_CNT_RGB);

-

-       mga_outl(M_AR0, eMaj_dy);

-       if (x3 < x1) {

-          mga_outl(M_AR1, eMaj_dx + eMaj_dy - 1);

-          mga_outl(M_AR2, eMaj_dx);

-          sgn |= M_SDXL;

-       } else {

-          mga_outl(M_AR1, -eMaj_dx);

-          mga_outl(M_AR2, -eMaj_dx);

-       }

-

-       mga_outl(M_AR6, eBot_dy);

-       if (x2 < x1) {

-          mga_outl(M_AR4, eBot_dx + eBot_dy - 1);

-          mga_outl(M_AR5, eBot_dx);

-          sgn |= M_SDXR;

-       } else {

-          mga_outl(M_AR4, -eBot_dx);

-          mga_outl(M_AR5, -eBot_dx);

-       }

-

-       mga_outl(M_FXBNDRY, (x1<<16) | x1);

-#ifdef INTERP_Z

-       mga_outl(M_DR0, z1<<15);

-#endif

-#ifdef INTERP_RGB

-       mga_outl(M_DR4, v1->color[0]<<15);

-       mga_outl(M_DR8, v1->color[1]<<15);

-       mga_outl(M_DR12, v1->color[2]<<15);

-#endif

-       mga_outl(M_SGN, sgn);

-       mga_outl(M_LEN | M_EXEC, eBot_dy);

-    } else { /* no lower triangle */

-       mga_fifo(4 + FIFO_CNT_Z + FIFO_CNT_RGB);

-

-       mga_outl(M_AR0, eMaj_dy);

-       if (x3 < x1) {

-          mga_outl(M_AR1, eMaj_dx + eMaj_dy - 1);

-          mga_outl(M_AR2, eMaj_dx);

-          sgn |= M_SDXL;

-       } else {

-          mga_outl(M_AR1, -eMaj_dx);

-          mga_outl(M_AR2, -eMaj_dx);

-       }

-

-       mga_outl(M_FXBNDRY, (x2<<16) | x1);

-#ifdef INTERP_Z

-       mga_outl(M_DR0, z1<<15);

-#endif

-#ifdef INTERP_RGB

-       mga_outl(M_DR4, v1->color[0]<<15);

-       mga_outl(M_DR8, v1->color[1]<<15);

-       mga_outl(M_DR12, v1->color[2]<<15);

-#endif

-    }

-

-    /* draw upper triangle */

-    if (eTop_dy) {

-       mga_fifo(5);

-       mga_outl(M_AR6, eTop_dy);

-       if (x3 < x2) {

-          mga_outl(M_AR4, eTop_dx + eTop_dy - 1);

-          mga_outl(M_AR5, eTop_dx);

-          sgn |= M_SDXR;

-       } else {

-          mga_outl(M_AR4, -eTop_dx);

-          mga_outl(M_AR5, -eTop_dx);

-          sgn &= ~M_SDXR;

-       }

-       mga_outl(M_SGN, sgn);

-       mga_outl(M_LEN | M_EXEC, eTop_dy);

-    }

- }

-}

-

-#undef FIFO_CNT_RGB

-#undef FIFO_CNT_Z

-

-#undef TRI_SWAP

-

-#undef SETUP_CODE

-#undef INTERP_RGB

-#undef INTERP_Z

-#undef CULL

-#undef TAG

+/*
+ * Mesa 3-D graphics library
+ * Version:  5.0
+ * 
+ * Copyright (C) 1999-2002  Brian Paul   All Rights Reserved.
+ * 
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ * 
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/*
+ * DOS/DJGPP device driver v1.3 for Mesa  --  MGA2064W triangle template
+ *
+ *  Copyright (c) 2003 - Borca Daniel
+ *  Email : dborca@yahoo.com
+ *  Web   : http://www.geocities.com/dborca
+ */
+
+
+/*
+ * Triangle Rasterizer Template
+ *
+ * This file is #include'd to generate custom triangle rasterizers.
+ *
+ * The following macros may be defined to indicate what auxillary information
+ * must be interplated across the triangle:
+ *    INTERP_Z        - if defined, interpolate Z values
+ *    INTERP_RGB      - if defined, interpolate RGB values
+ *
+ *    TAG             - function name
+ *    CULL            - enable culling for: 0=no, 1=back, -1=front
+ *
+ *    SETUP_CODE      - to be executed once per triangle (usually HW init)
+ *
+ * For flatshaded primitives, the provoking vertex is the final one.
+ * This code was designed for the origin to be in the upper-left corner.
+ *
+ * Inspired by triangle rasterizer code written by Brian Paul.
+ */
+
+
+
+#define TRI_SWAP(a, b)        \
+do {                          \
+    const MGAvertex *tmp = a; \
+    a = b;                    \
+    b = tmp;                  \
+} while (0)
+
+void TAG (int cull, const MGAvertex *v1, const MGAvertex *v2, const MGAvertex *v3)
+{
+ int area;
+ int x1, y1, x2, y2, x3, y3;
+ int eMaj_dx, eMaj_dy, eBot_dx, eBot_dy, eTop_dx, eTop_dy;
+#ifdef INTERP_RGB
+#define FIFO_CNT_RGB 3
+ int eMaj_dr, eBot_dr, eMaj_dg, eBot_dg, eMaj_db, eBot_db;
+ int drdx, drdy, dgdx, dgdy, dbdx, dbdy;
+#else
+#define FIFO_CNT_RGB 0
+#endif
+#ifdef INTERP_Z
+#define FIFO_CNT_Z 1
+ int dzdx, dzdy;
+ int eMaj_dz, eBot_dz;
+ int z1, z2, z3;
+#else
+#define FIFO_CNT_Z 0
+#endif
+
+#if defined(INTERP_Z) || defined(INTERP_RGB)
+#ifndef INTERP_RGB
+ int red = v3->color[0];
+ int green = v3->color[1];
+ int blue = v3->color[2];
+#endif
+#else
+ unsigned long color = mga_mixrgb_full(v3->color);
+#endif
+
+ int sgn = 0;
+
+ /* sort along the vertical axis */
+ if (v2->win[1] < v1->win[1]) {
+    TRI_SWAP(v1, v2);
+#ifdef CULL
+    cull = -cull;
+#endif
+ }
+
+ if (v3->win[1] < v1->win[1]) {
+    TRI_SWAP(v1, v3);
+    TRI_SWAP(v2, v3);
+ } else if (v3->win[1] < v2->win[1]) {
+    TRI_SWAP(v2, v3);
+#ifdef CULL
+    cull = -cull;
+#endif    
+ }
+
+ x1 = v1->win[0];
+ y1 = v1->win[1];
+ x2 = v2->win[0];
+ y2 = v2->win[1];
+ x3 = v3->win[0];
+ y3 = v3->win[1];
+
+ /* compute deltas for each edge */
+ eMaj_dx = x3 - x1;
+ eMaj_dy = y3 - y1;
+ eBot_dx = x2 - x1;
+ eBot_dy = y2 - y1;
+ eTop_dx = x3 - x2;
+ eTop_dy = y3 - y2;
+
+ /* compute area */
+ if ((area = eMaj_dx * eBot_dy - eBot_dx * eMaj_dy) == 0) {
+    return;
+ }
+#ifdef CULL
+ if ((area * cull) > 0) {
+    return;
+ }
+#endif
+
+ mga_select();
+
+ /* set engine state */
+#ifdef SETUP_CODE
+ SETUP_CODE
+#endif
+
+ /* draw lower triangle */
+#if defined(INTERP_Z) || defined(INTERP_RGB)
+ mga_fifo(1);
+#else
+ mga_fifo(2);
+ mga_outl(M_FCOL, color);
+#endif
+ mga_outl(M_YDST, y1);
+
+#ifdef INTERP_Z
+ z1 = v1->win[2];
+ z2 = v2->win[2];
+ z3 = v3->win[2];
+
+ /* compute d?/dx and d?/dy derivatives */
+ eMaj_dz = z3 - z1;
+ eBot_dz = z2 - z1;
+ dzdx = ((long long)(eMaj_dz * eBot_dy - eMaj_dy * eBot_dz)<<15) / area;
+ dzdy = ((long long)(eMaj_dx * eBot_dz - eMaj_dz * eBot_dx)<<15) / area;
+
+#ifndef INTERP_RGB
+ mga_fifo(11);
+ mga_outl(M_DR2, dzdx);
+ mga_outl(M_DR3, dzdy);
+ mga_outl(M_DR4, red<<15);
+ mga_outl(M_DR6, 0);
+ mga_outl(M_DR7, 0);
+ mga_outl(M_DR8, green<<15);
+ mga_outl(M_DR10, 0);
+ mga_outl(M_DR11, 0);
+ mga_outl(M_DR12, blue<<15);
+ mga_outl(M_DR14, 0);
+ mga_outl(M_DR15, 0);
+#else
+ mga_fifo(2);
+ mga_outl(M_DR2, dzdx);
+ mga_outl(M_DR3, dzdy);
+#endif
+#endif
+
+#ifdef INTERP_RGB
+ /* compute color deltas */
+ eMaj_dr = v3->color[0] - v1->color[0];
+ eBot_dr = v2->color[0] - v1->color[0];
+ eMaj_dg = v3->color[1] - v1->color[1];
+ eBot_dg = v2->color[1] - v1->color[1];
+ eMaj_db = v3->color[2] - v1->color[2];
+ eBot_db = v2->color[2] - v1->color[2];
+
+ /* compute color increments */
+ drdx = ((long long)(eMaj_dr * eBot_dy - eMaj_dy * eBot_dr)<<15) / area;
+ drdy = ((long long)(eMaj_dx * eBot_dr - eMaj_dr * eBot_dx)<<15) / area;
+ dgdx = ((long long)(eMaj_dg * eBot_dy - eMaj_dy * eBot_dg)<<15) / area;
+ dgdy = ((long long)(eMaj_dx * eBot_dg - eMaj_dg * eBot_dx)<<15) / area;
+ dbdx = ((long long)(eMaj_db * eBot_dy - eMaj_dy * eBot_db)<<15) / area;
+ dbdy = ((long long)(eMaj_dx * eBot_db - eMaj_db * eBot_dx)<<15) / area;
+
+ mga_fifo(6);
+ mga_outl(M_DR6, drdx);
+ mga_outl(M_DR7, drdy);
+ mga_outl(M_DR10, dgdx);
+ mga_outl(M_DR11, dgdy);
+ mga_outl(M_DR14, dbdx);
+ mga_outl(M_DR15, dbdy);
+#endif
+
+ if (area > 0) { /* major edge on the right */
+    if (eBot_dy) { /* have lower triangle */
+       mga_fifo(9 + FIFO_CNT_Z + FIFO_CNT_RGB);
+
+       mga_outl(M_AR0, eBot_dy);
+       if (x2 < x1) {
+          mga_outl(M_AR1, eBot_dx + eBot_dy - 1);
+          mga_outl(M_AR2, eBot_dx);
+          sgn |= M_SDXL;
+       } else {
+          mga_outl(M_AR1, -eBot_dx);
+          mga_outl(M_AR2, -eBot_dx);
+       }
+
+       mga_outl(M_AR6, eMaj_dy);
+       if (x3 < x1) {
+          mga_outl(M_AR4, eMaj_dx + eMaj_dy - 1);
+          mga_outl(M_AR5, eMaj_dx);
+          sgn |= M_SDXR;
+       } else {
+          mga_outl(M_AR4, -eMaj_dx);
+          mga_outl(M_AR5, -eMaj_dx);
+       }
+
+       mga_outl(M_FXBNDRY, (x1<<16) | x1);
+#ifdef INTERP_Z
+       mga_outl(M_DR0, z1<<15);
+#endif
+#ifdef INTERP_RGB
+       mga_outl(M_DR4, v1->color[0]<<15);
+       mga_outl(M_DR8, v1->color[1]<<15);
+       mga_outl(M_DR12, v1->color[2]<<15);
+#endif
+       mga_outl(M_SGN, sgn);
+       mga_outl(M_LEN | M_EXEC, eBot_dy);
+    } else { /* no lower triangle */
+       mga_fifo(4 + FIFO_CNT_Z + FIFO_CNT_RGB);
+
+       mga_outl(M_AR6, eMaj_dy);
+       if (x3 < x1) {
+          mga_outl(M_AR4, eMaj_dx + eMaj_dy - 1);
+          mga_outl(M_AR5, eMaj_dx);
+          sgn |= M_SDXR;
+       } else {
+          mga_outl(M_AR4, -eMaj_dx);
+          mga_outl(M_AR5, -eMaj_dx);
+       }
+
+       mga_outl(M_FXBNDRY, (x1<<16) | x2);
+#ifdef INTERP_Z
+       mga_outl(M_DR0, z2<<15);
+#endif
+#ifdef INTERP_RGB
+       mga_outl(M_DR4, v2->color[0]<<15);
+       mga_outl(M_DR8, v2->color[1]<<15);
+       mga_outl(M_DR12, v2->color[2]<<15);
+#endif
+    }
+
+    /* draw upper triangle */
+    if (eTop_dy) {
+       mga_fifo(5);
+       mga_outl(M_AR0, eTop_dy);
+       if (x3 < x2) {
+          mga_outl(M_AR1, eTop_dx + eTop_dy - 1);
+          mga_outl(M_AR2, eTop_dx);
+          sgn |= M_SDXL;
+       } else {
+          mga_outl(M_AR1, -eTop_dx);
+          mga_outl(M_AR2, -eTop_dx);
+          sgn &= ~M_SDXL;
+       }
+       mga_outl(M_SGN, sgn);
+       mga_outl(M_LEN | M_EXEC, eTop_dy);
+    }
+ } else { /* major edge on the left */
+    if (eBot_dy) { /* have lower triangle */
+       mga_fifo(9 + FIFO_CNT_Z + FIFO_CNT_RGB);
+
+       mga_outl(M_AR0, eMaj_dy);
+       if (x3 < x1) {
+          mga_outl(M_AR1, eMaj_dx + eMaj_dy - 1);
+          mga_outl(M_AR2, eMaj_dx);
+          sgn |= M_SDXL;
+       } else {
+          mga_outl(M_AR1, -eMaj_dx);
+          mga_outl(M_AR2, -eMaj_dx);
+       }
+
+       mga_outl(M_AR6, eBot_dy);
+       if (x2 < x1) {
+          mga_outl(M_AR4, eBot_dx + eBot_dy - 1);
+          mga_outl(M_AR5, eBot_dx);
+          sgn |= M_SDXR;
+       } else {
+          mga_outl(M_AR4, -eBot_dx);
+          mga_outl(M_AR5, -eBot_dx);
+       }
+
+       mga_outl(M_FXBNDRY, (x1<<16) | x1);
+#ifdef INTERP_Z
+       mga_outl(M_DR0, z1<<15);
+#endif
+#ifdef INTERP_RGB
+       mga_outl(M_DR4, v1->color[0]<<15);
+       mga_outl(M_DR8, v1->color[1]<<15);
+       mga_outl(M_DR12, v1->color[2]<<15);
+#endif
+       mga_outl(M_SGN, sgn);
+       mga_outl(M_LEN | M_EXEC, eBot_dy);
+    } else { /* no lower triangle */
+       mga_fifo(4 + FIFO_CNT_Z + FIFO_CNT_RGB);
+
+       mga_outl(M_AR0, eMaj_dy);
+       if (x3 < x1) {
+          mga_outl(M_AR1, eMaj_dx + eMaj_dy - 1);
+          mga_outl(M_AR2, eMaj_dx);
+          sgn |= M_SDXL;
+       } else {
+          mga_outl(M_AR1, -eMaj_dx);
+          mga_outl(M_AR2, -eMaj_dx);
+       }
+
+       mga_outl(M_FXBNDRY, (x2<<16) | x1);
+#ifdef INTERP_Z
+       mga_outl(M_DR0, z1<<15);
+#endif
+#ifdef INTERP_RGB
+       mga_outl(M_DR4, v1->color[0]<<15);
+       mga_outl(M_DR8, v1->color[1]<<15);
+       mga_outl(M_DR12, v1->color[2]<<15);
+#endif
+    }
+
+    /* draw upper triangle */
+    if (eTop_dy) {
+       mga_fifo(5);
+       mga_outl(M_AR6, eTop_dy);
+       if (x3 < x2) {
+          mga_outl(M_AR4, eTop_dx + eTop_dy - 1);
+          mga_outl(M_AR5, eTop_dx);
+          sgn |= M_SDXR;
+       } else {
+          mga_outl(M_AR4, -eTop_dx);
+          mga_outl(M_AR5, -eTop_dx);
+          sgn &= ~M_SDXR;
+       }
+       mga_outl(M_SGN, sgn);
+       mga_outl(M_LEN | M_EXEC, eTop_dy);
+    }
+ }
+}
+
+#undef FIFO_CNT_RGB
+#undef FIFO_CNT_Z
+
+#undef TRI_SWAP
+
+#undef SETUP_CODE
+#undef INTERP_RGB
+#undef INTERP_Z
+#undef CULL
+#undef TAG
diff --git a/src/mesa/drivers/dos/mga/mga.c b/src/mesa/drivers/dos/mga/mga.c
index 27afba0ba0..5b0ee6437e 100644
--- a/src/mesa/drivers/dos/mga/mga.c
+++ b/src/mesa/drivers/dos/mga/mga.c
@@ -1,1536 +1,1536 @@
-/*

- * Mesa 3-D graphics library

- * Version:  5.0

- * 

- * Copyright (C) 1999-2002  Brian Paul   All Rights Reserved.

- * 

- * Permission is hereby granted, free of charge, to any person obtaining a

- * copy of this software and associated documentation files (the "Software"),

- * to deal in the Software without restriction, including without limitation

- * the rights to use, copy, modify, merge, publish, distribute, sublicense,

- * and/or sell copies of the Software, and to permit persons to whom the

- * Software is furnished to do so, subject to the following conditions:

- * 

- * The above copyright notice and this permission notice shall be included

- * in all copies or substantial portions of the Software.

- * 

- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS

- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL

- * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN

- * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN

- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

- */

-

-/*

- * DOS/DJGPP device driver v1.3 for Mesa  --  MGA2064W

- *

- *  Copyright (c) 2003 - Borca Daniel

- *  Email : dborca@yahoo.com

- *  Web   : http://www.geocities.com/dborca

- *

- * Thanks to Shawn Hargreaves for FreeBE/AF

- */

-

-

-#include <dpmi.h>

-#include <stdlib.h>

-#include <string.h>

-

-#include "../internal.h"

-#include "mga_reg.h"

-#include "mga_hw.h"

-#include "mga_mode.h"

-#include "mga.h"

-

-

-

-/* cached drawing engine state */

-#define OP_NONE 0

-

-#define OP_DRAWRECT (\

-           M_DWG_TRAP |           /* opcod */    \

-           M_DWG_BLK |            /* atype */    \

-                                  /* linear */   \

-           M_DWG_NOZCMP |         /* zmode */    \

-           M_DWG_SOLID |          /* solid */    \

-           M_DWG_ARZERO |         /* arzero */   \

-           M_DWG_SGNZERO |        /* sgnzero */  \

-           M_DWG_SHFTZERO |       /* shftzero */ \

-           M_DWG_BOP_SRC          /* bop */      \

-                                  /* trans */    \

-                                  /* bltmod */   \

-                                  /* pattern */  \

-                                  /* transc */   )

-#define OP_DRAWRECT_TX32BGR (\

-           M_DWG_TEXTURE_TRAP |   /* opcod */    \

-           M_DWG_I |              /* atype */    \

-                                  /* linear */   \

-           M_DWG_NOZCMP |         /* zmode */    \

-                                  /* solid */    \

-           M_DWG_ARZERO |         /* arzero */   \

-           M_DWG_SGNZERO |        /* sgnzero */  \

-           M_DWG_SHFTZERO |       /* shftzero */ \

-           M_DWG_BOP_SRC |        /* bop */      \

-                                  /* trans */    \

-           M_DWG_BU32BGR          /* bltmod */   \

-                                  /* pattern */  \

-                                  /* transc */   )

-#define OP_DRAWRECT_TX24BGR (\

-           M_DWG_TEXTURE_TRAP |   /* opcod */    \

-           M_DWG_I |              /* atype */    \

-                                  /* linear */   \

-           M_DWG_NOZCMP |         /* zmode */    \

-                                  /* solid */    \

-           M_DWG_ARZERO |         /* arzero */   \

-           M_DWG_SGNZERO |        /* sgnzero */  \

-           M_DWG_SHFTZERO |       /* shftzero */ \

-           M_DWG_BOP_SRC |        /* bop */      \

-                                  /* trans */    \

-           M_DWG_BU24BGR          /* bltmod */   \

-                                  /* pattern */  \

-                                  /* transc */   )

-#define OP_DRAWLINE (\

-           M_DWG_AUTOLINE_CLOSE | /* opcod */    \

-           M_DWG_RPL |            /* atype */    \

-                                  /* linear */   \

-           M_DWG_NOZCMP |         /* zmode */    \

-           M_DWG_SOLID |          /* solid */    \

-                                  /* arzero */   \

-                                  /* sgnzero */  \

-           M_DWG_SHFTZERO |       /* shftzero */ \

-           M_DWG_BOP_SRC |        /* bop */      \

-                                  /* trans */    \

-           M_DWG_BFCOL            /* bltmod */   \

-                                  /* pattern */  \

-                                  /* transc */   )

-#define OP_DRAWLINE_I (\

-           M_DWG_AUTOLINE_CLOSE | /* opcod */    \

-           M_DWG_I |              /* atype */    \

-                                  /* linear */   \

-           M_DWG_NOZCMP |         /* zmode */    \

-                                  /* solid */    \

-                                  /* arzero */   \

-                                  /* sgnzero */  \

-                                  /* shftzero */ \

-           M_DWG_BOP_SRC |        /* bop */      \

-                                  /* trans */    \

-           M_DWG_BFCOL            /* bltmod */   \

-                                  /* pattern */  \

-                                  /* transc */   )

-#define OP_DRAWLINE_ZI (\

-           M_DWG_AUTOLINE_CLOSE | /* opcod */    \

-           M_DWG_ZI |             /* atype */    \

-                                  /* linear */   \

-           M_DWG_ZLT |            /* zmode */    \

-                                  /* solid */    \

-                                  /* arzero */   \

-                                  /* sgnzero */  \

-                                  /* shftzero */ \

-           M_DWG_BOP_SRC |        /* bop */      \

-                                  /* trans */    \

-           M_DWG_BFCOL            /* bltmod */   \

-                                  /* pattern */  \

-                                  /* transc */   )

-#define OP_DRAWTRAP (\

-           M_DWG_TRAP |           /* opcod */    \

-           M_DWG_BLK |            /* atype */    \

-                                  /* linear */   \

-           M_DWG_NOZCMP |         /* zmode */    \

-           M_DWG_SOLID |          /* solid */    \

-                                  /* arzero */   \

-                                  /* sgnzero */  \

-           M_DWG_SHFTZERO |       /* shftzero */ \

-           M_DWG_BOP_SRC          /* bop */      \

-                                  /* trans */    \

-                                  /* bltmod */   \

-                                  /* pattern */  \

-                                  /* transc */   )

-#define OP_DRAWTRAP_I (\

-           M_DWG_TRAP |           /* opcod */    \

-           M_DWG_I |              /* atype */    \

-                                  /* linear */   \

-           M_DWG_NOZCMP |         /* zmode */    \

-                                  /* solid */    \

-                                  /* arzero */   \

-                                  /* sgnzero */  \

-           M_DWG_SHFTZERO |       /* shftzero */ \

-           M_DWG_BOP_SRC          /* bop */      \

-                                  /* trans */    \

-                                  /* bltmod */   \

-                                  /* pattern */  \

-                                  /* transc */   )

-#define OP_DRAWTRAP_ZI (\

-           M_DWG_TRAP |           /* opcod */    \

-           M_DWG_ZI |             /* atype */    \

-                                  /* linear */   \

-           M_DWG_ZLT |            /* zmode */    \

-                                  /* solid */    \

-                                  /* arzero */   \

-                                  /* sgnzero */  \

-           M_DWG_SHFTZERO |       /* shftzero */ \

-           M_DWG_BOP_SRC          /* bop */      \

-                                  /* trans */    \

-                                  /* bltmod */   \

-                                  /* pattern */  \

-                                  /* transc */   )

-#define OP_ILOAD_32BGR (\

-           M_DWG_ILOAD |          /* opcod */    \

-           M_DWG_RPL |            /* atype */    \

-                                  /* linear */   \

-                                  /* zmode */    \

-                                  /* solid */    \

-                                  /* arzero */   \

-           M_DWG_SGNZERO |        /* sgnzero */  \

-           M_DWG_SHFTZERO |       /* shftzero */ \

-           M_DWG_BOP_SRC |        /* bop */      \

-                                  /* trans */    \

-           M_DWG_BU32BGR          /* bltmod */   \

-                                  /* pattern */  \

-                                  /* transc */   )

-#define OP_ILOAD_24BGR (\

-           M_DWG_ILOAD |          /* opcod */    \

-           M_DWG_RPL |            /* atype */    \

-                                  /* linear */   \

-                                  /* zmode */    \

-                                  /* solid */    \

-                                  /* arzero */   \

-           M_DWG_SGNZERO |        /* sgnzero */  \

-           M_DWG_SHFTZERO |       /* shftzero */ \

-           M_DWG_BOP_SRC |        /* bop */      \

-                                  /* trans */    \

-           M_DWG_BU24BGR          /* bltmod */   \

-                                  /* pattern */  \

-                                  /* transc */   )

-

-

-

-/* internal hardware data structures */

-static int interleave;

-static unsigned long zorg;

-static unsigned long vram;

-static char card_name[80];

-

-

-

-/* some info about current mode */

-static int __bpp, __bypp;

-static int __pixwidth, __bytwidth, __pagewidth, __width, __height, __zheight;

-static int __operation;

-static int __scrollx, __scrolly;

-

-

-

-/* buffers */

-static int mga_readbuffer, mga_writebuffer;

-static long mga_readbuffer_ptr, mga_writebuffer_ptr;

-static long mga_backbuffer_ptr, mga_frontbuffer_ptr;

-

-

-

-/* lookup table for scaling 2 bit colors up to 8 bits */

-static int _rgb_scale_2[4] = {

-       0, 85, 170, 255

-};

-

-/* lookup table for scaling 3 bit colors up to 8 bits */

-static int _rgb_scale_3[8] = {

-       0, 36, 73, 109, 146, 182, 219, 255

-};

-

-/* lookup table for scaling 5 bit colors up to 8 bits */

-static int _rgb_scale_5[32] = {

-   0,   8,   16,  25,  33,  41,  49,  58,

-   66,  74,  82,  90,  99,  107, 115, 123,

-   132, 140, 148, 156, 165, 173, 181, 189,

-   197, 206, 214, 222, 230, 239, 247, 255

-};

-

-/* lookup table for scaling 6 bit colors up to 8 bits */

-static int _rgb_scale_6[64] = {

-   0,   4,   8,   12,  16,  20,  24,  28,

-   32,  36,  40,  45,  49,  53,  57,  61,

-   65,  69,  73,  77,  81,  85,  89,  93,

-   97,  101, 105, 109, 113, 117, 121, 125,

-   130, 134, 138, 142, 146, 150, 154, 158,

-   162, 166, 170, 174, 178, 182, 186, 190,

-   194, 198, 202, 206, 210, 215, 219, 223,

-   227, 231, 235, 239, 243, 247, 251, 255

-};

-

-

-

-/*

- * pixel/color routines

- */

-void (*mga_putpixel) (unsigned int offset, int color);

-int (*mga_getpixel) (unsigned int offset);

-void (*mga_getrgba) (unsigned int offset, unsigned char rgba[4]);

-int (*mga_mixrgb) (const unsigned char rgb[]);

-static int (*mga_mixrgb_full) (const unsigned char rgb[]);

-

-

-

-/* mga_fifo:

- *  Waits until there are at least <n> free slots in the FIFO buffer.

- */

-#define mga_fifo(n) do { } while (mga_inb(M_FIFOSTATUS) < (n))

-

-

-

-static int _mga_rread (int port, int index)

-{

- mga_select();

- mga_outb(port, index);

- return mga_inb(port+1);

-}

-

-

-

-static void _mga_rwrite (int port, int index, int v)

-{

- mga_select();

- mga_outb(port, index);

- mga_outb(port+1, v);

-}

-

-

-

-static void _mga_ralter (int port, int index, int mask, int v)

-{

- int temp;

- temp = _mga_rread(port, index);

- temp &= (~mask);

- temp |= (v & mask);

- _mga_rwrite(port, index, temp);

-}

-

-

-

-/* WaitTillIdle:

- *  Delay until the hardware controller has finished drawing.

- */

-void mga_wait_idle (void)

-{

- int tries = 2;

-

- /*hwptr_unselect(oldptr);*/

-

- mga_select();

-

- while (tries--) {

-       do {

-       } while (!(mga_inl(M_FIFOSTATUS) & 0x200));

-

-       do {

-       } while (mga_inl(M_STATUS) & 0x10000);

-

-       mga_outb(M_CRTC_INDEX, 0);

- }

-

- /*hwptr_select(oldptr);*/

-}

-

-

-

-/* Desc: Waits for the next vertical sync period.

- *

- * In  :

- * Out :

- *

- * Note:

- */

-static void _mga_wait_retrace (void)

-{

- int t1 = 0;

- int t2 = 0;

-

- do {

-     t1 = t2;

-     t2 = mga_inl(M_VCOUNT);

- } while (t2 >= t1);

-}

-

-

-

-/* Desc: fix scan lines

- *

- * In  :

- * Out :

- *

- * Note:

- */

-static unsigned long _mga_fix_scans (unsigned long l)

-{

- unsigned long m = 0;

-

- switch (__bpp) {

-        case 8:

-             m = interleave?128:64;

-             break;

-        case 15:

-        case 16:

-             m = interleave?64:32;

-             break;

-        case 24:

-             m = interleave?128:64;

-             break;

-        case 32:

-             m = 32;

-             break;

- }

-

- m -= 1;

- return (l + m) & ~m;

-}

-

-

-

-/* Desc: HW scrolling function

- *

- * In  :

- * Out :

- *

- * Note: view Z-buffer in 16bit modes: _mga_display_start(0, 0, __height, 1)

- */

-void mga_display_start (long boffset, long x, long y, long waitVRT)

-{

- long addr;

-

- mga_select();

-

- if (waitVRT >= 0) {

-

-    addr = __bytwidth * y + (boffset + x) * __bypp;

-

-    if (interleave) {

-       addr /= 8;

-    } else {

-       addr /= 4;

-    }

-

-    _mga_rwrite(M_CRTC_INDEX, 0x0D, (addr)&0xFF);

-    _mga_rwrite(M_CRTC_INDEX, 0x0C, (addr>>8)&0xFF);

-    _mga_ralter(M_CRTC_EXT_INDEX, 0, 0x0F, (addr>>16)&0x0F);

-

-    while (waitVRT--) {

-          _mga_wait_retrace();

-    }

- }

-

- __scrollx = x;

- __scrolly = y;

-}

-

-

-

-/* Desc: set READ buffer

- *

- * In  : either FRONT or BACK buffer

- * Out :

- *

- * Note:

- */

-void mga_set_readbuffer (int buffer)

-{

- mga_readbuffer = buffer;

-

- mga_readbuffer_ptr = (mga_readbuffer == MGA_FRONTBUFFER) ? mga_frontbuffer_ptr : mga_backbuffer_ptr;

-}

-

-

-

-/* Desc: set WRITE buffer

- *

- * In  : either FRONT or BACK buffer

- * Out :

- *

- * Note:

- */

-void mga_set_writebuffer (int buffer)

-{

- mga_writebuffer = buffer;

-

- mga_writebuffer_ptr = (mga_writebuffer == MGA_FRONTBUFFER) ? mga_frontbuffer_ptr : mga_backbuffer_ptr;

-

- mga_select();

- mga_fifo(1);

- mga_outl(M_YDSTORG, mga_writebuffer_ptr);

-

- __operation = OP_NONE;

-}

-

-

-

-/* Desc: swap buffers

- *

- * In  : number of vertical retraces to wait

- * Out :

- *

- * Note:

- */

-void mga_swapbuffers (int swapinterval)

-{

- /* flip the buffers */

- mga_backbuffer_ptr ^= __pagewidth;

- mga_frontbuffer_ptr ^= __pagewidth;

-

- /* update READ/WRITE pointers */

- mga_set_readbuffer(mga_readbuffer);

- mga_set_writebuffer(mga_writebuffer);

-

- /* make sure we always see the FRONT buffer */

- mga_display_start(mga_frontbuffer_ptr, __scrollx, __scrolly, swapinterval);

-}

-

-

-

-/* Desc: color composition (w/o ALPHA)

- *

- * In  : array of integers (R, G, B)

- * Out : color

- *

- * Note: -

- */

-static __inline int _mga_mixrgb8 (const unsigned char rgb[])

-{

- return (rgb[0]&0xe0)|((rgb[1]>>5)<<2)|(rgb[2]>>6);

-}

-static __inline int _mga_mixrgb15 (const unsigned char rgb[])

-{

- return ((rgb[0]>>3)<<10)|((rgb[1]>>3)<<5)|(rgb[2]>>3);

-}

-static __inline int _mga_mixrgb16 (const unsigned char rgb[])

-{

- return ((rgb[0]>>3)<<11)|((rgb[1]>>2)<<5)|(rgb[2]>>3);

-}

-static __inline int _mga_mixrgb32 (const unsigned char rgb[])

-{

- return (rgb[0]<<16)|(rgb[1]<<8)|(rgb[2]);

-}

-

-

-

-/* Desc: color composition (w/o ALPHA) + replication

- *

- * In  : array of integers (R, G, B)

- * Out : color

- *

- * Note: -

- */

-static int _mga_mixrgb8_full (const unsigned char rgb[])

-{

- int color = _mga_mixrgb8(rgb);

- color |= color<<8;

- return (color<<16) | color;

-}

-static int _mga_mixrgb15_full (const unsigned char rgb[])

-{

- int color = _mga_mixrgb15(rgb);

- return (color<<16) | color;

-}

-static int _mga_mixrgb16_full (const unsigned char rgb[])

-{

- int color = _mga_mixrgb16(rgb);

- return (color<<16) | color;

-}

-#define _mga_mixrgb32_full _mga_mixrgb32

-

-

-

-/* Desc: putpixel

- *

- * In  : pixel offset, pixel value

- * Out : -

- *

- * Note: uses current write buffer

- */

-static void _mga_putpixel8 (unsigned int offset, int color)

-{

- hwptr_pokeb(mgaptr.linear_map, mga_writebuffer_ptr + offset, color);

-}

-#define _mga_putpixel15 _mga_putpixel16

-static void _mga_putpixel16 (unsigned int offset, int color)

-{

- hwptr_pokew(mgaptr.linear_map, (mga_writebuffer_ptr + offset) * 2, color);

-}

-static void _mga_putpixel32 (unsigned int offset, int color)

-{

- hwptr_pokel(mgaptr.linear_map, (mga_writebuffer_ptr + offset) * 4, color);

-}

-

-

-

-/* Desc: pixel retrieval

- *

- * In  : pixel offset

- * Out : pixel value

- *

- * Note: uses current read buffer

- */

-static __inline int _mga_getpixel8 (unsigned int offset)

-{

- return hwptr_peekb(mgaptr.linear_map, mga_readbuffer_ptr + offset);

-}

-#define _mga_getpixel15 _mga_getpixel16

-static __inline int _mga_getpixel16 (unsigned int offset)

-{

- return hwptr_peekw(mgaptr.linear_map, (mga_readbuffer_ptr + offset) * 2);

-}

-static __inline int _mga_getpixel32 (unsigned int offset)

-{

- return hwptr_peekl(mgaptr.linear_map, (mga_readbuffer_ptr + offset) * 4);

-}

-

-

-

-/* Desc: color decomposition

- *

- * In  : pixel offset, array of integers to hold color components (R, G, B, A)

- * Out : -

- *

- * Note: uses current read buffer

- */

-static void _mga_getrgba8 (unsigned int offset, unsigned char rgba[4])

-{

- int c = _mga_getpixel8(offset);

- rgba[0] = _rgb_scale_3[(c >> 5) & 0x7];

- rgba[1] = _rgb_scale_3[(c >> 2) & 0x7];

- rgba[2] = _rgb_scale_2[c & 0x3];

- rgba[3] = 255;

-}

-static void _mga_getrgba15 (unsigned int offset, unsigned char rgba[4])

-{

- int c = _mga_getpixel15(offset);

- rgba[0] = _rgb_scale_5[(c >> 10) & 0x1F];

- rgba[1] = _rgb_scale_5[(c >> 5) & 0x1F];

- rgba[2] = _rgb_scale_5[c & 0x1F];

- rgba[3] = 255;

-}

-static void _mga_getrgba16 (unsigned int offset, unsigned char rgba[4])

-{

- int c = _mga_getpixel16(offset);

- rgba[0] = _rgb_scale_5[(c >> 11) & 0x1F];

- rgba[1] = _rgb_scale_6[(c >> 5) & 0x3F];

- rgba[2] = _rgb_scale_5[c & 0x1F];

- rgba[3] = 255;

-}

-static void _mga_getrgba32 (unsigned int offset, unsigned char rgba[4])

-{

- int c = _mga_getpixel32(offset);

- rgba[0] = c >> 16;

- rgba[1] = c >> 8;

- rgba[2] = c; 

- rgba[3] = c >> 24;

-}

-

-

-

-/* Desc: RGB flat line

- *

- * In  :

- * Out :

- *

- * Note:

- */

-void mga_draw_line_rgb_flat (const MGAvertex *v1, const MGAvertex *v2)

-{

- unsigned long color;

- int x1 = v1->win[0];

- int y1 = v1->win[1];

- int x2 = v2->win[0];

- int y2 = v2->win[1];

-

- if ((x1 == x2) && (y1 == y2)) {

-    return;

- }

-

- mga_select();

-

- /* set engine state */

- if (__operation != OP_DRAWLINE) {

-    mga_fifo(1);

-    mga_outl(M_DWGCTL, OP_DRAWLINE);

-    __operation = OP_DRAWLINE;

- }

-

- color = mga_mixrgb_full(v2->color);

-

- /* draw the line */

- mga_fifo(3);

- mga_outl(M_FCOL, color);

- mga_outl(M_XYSTRT, (y1<<16) | x1);

- mga_outl(M_XYEND | M_EXEC, (y2<<16) | x2);

-}

-

-

-

-/* Desc: RGB flat Z-less line

- *

- * In  :

- * Out :

- *

- * Note: I never figured out "diagonal increments"

- */

-void mga_draw_line_rgb_flat_zless (const MGAvertex *v1, const MGAvertex *v2)

-{

- int z1, dz;

- int x1 = v1->win[0];

- int y1 = v1->win[1];

- int x2 = v2->win[0];

- int y2 = v2->win[1];

- int dx = abs(x2 - x1);

- int dy = abs(y2 - y1);

-

- if ((dx == 0) && (dy == 0)) {

-    return;

- }

-

- mga_select();

-

- /* set engine state */

- if (__operation != OP_DRAWLINE_ZI) {

-    mga_fifo(1);

-    mga_outl(M_DWGCTL, OP_DRAWLINE_ZI);

-    __operation = OP_DRAWLINE_ZI;

- }

-

- if (dx < dy) {

-    dx = dy;

- }

-

- z1 = v1->win[2] << 15;

- dz = ((v2->win[2] << 15) - z1) / dx;

-

- /* draw the line */

- mga_fifo(14);

- mga_outl(M_DR0, z1);

- mga_outl(M_DR2, dz);

- mga_outl(M_DR3, dz);

- mga_outl(M_DR4, v2->color[0] << 15);

- mga_outl(M_DR6, 0);

- mga_outl(M_DR7, 0);

- mga_outl(M_DR8, v2->color[1] << 15);

- mga_outl(M_DR10, 0);

- mga_outl(M_DR11, 0);

- mga_outl(M_DR12, v2->color[2] << 15);

- mga_outl(M_DR14, 0);

- mga_outl(M_DR15, 0);

- mga_outl(M_XYSTRT, (y1<<16) | x1);

- mga_outl(M_XYEND | M_EXEC, (y2<<16) | x2);

-}

-

-

-

-/* Desc: RGB iterated line

- *

- * In  :

- * Out :

- *

- * Note: I never figured out "diagonal increments"

- */

-void mga_draw_line_rgb_iter (const MGAvertex *v1, const MGAvertex *v2)

-{

- int r1, g1, b1;

- int dr, dg, db;

- int x1 = v1->win[0];

- int y1 = v1->win[1];

- int x2 = v2->win[0];

- int y2 = v2->win[1];

- int dx = abs(x2 - x1);

- int dy = abs(y2 - y1);

-

- if ((dx == 0) && (dy == 0)) {

-    return;

- }

-

- mga_select();

-

- /* set engine state */

- if (__operation != OP_DRAWLINE_I) {

-    mga_fifo(1);

-    mga_outl(M_DWGCTL, OP_DRAWLINE_I);

-    __operation = OP_DRAWLINE_I;

- }

-

- if (dx < dy) {

-    dx = dy;

- }

-

- r1 = v1->color[0] << 15;

- g1 = v1->color[1] << 15;

- b1 = v1->color[2] << 15;

- dr = ((v2->color[0] << 15) - r1) / dx;

- dg = ((v2->color[1] << 15) - g1) / dx;

- db = ((v2->color[2] << 15) - b1) / dx;

-

- /* draw the line */

- mga_fifo(11);

- mga_outl(M_DR4, r1);

- mga_outl(M_DR6, dr);

- mga_outl(M_DR7, dr);

- mga_outl(M_DR8, g1);

- mga_outl(M_DR10, dg);

- mga_outl(M_DR11, dg);

- mga_outl(M_DR12, b1);

- mga_outl(M_DR14, db);

- mga_outl(M_DR15, db);

- mga_outl(M_XYSTRT, (y1<<16) | x1);

- mga_outl(M_XYEND | M_EXEC, (y2<<16) | x2);

-}

-

-

-

-/* Desc: RGB iterated Z-less line

- *

- * In  :

- * Out :

- *

- * Note: I never figured out "diagonal increments"

- */

-void mga_draw_line_rgb_iter_zless (const MGAvertex *v1, const MGAvertex *v2)

-{

- int z1, dz;

- int r1, g1, b1;

- int dr, dg, db;

- int x1 = v1->win[0];

- int y1 = v1->win[1];

- int x2 = v2->win[0];

- int y2 = v2->win[1];

- int dx = abs(x2 - x1);

- int dy = abs(y2 - y1);

-

- if ((dx == 0) && (dy == 0)) {

-    return;

- }

-

- mga_select();

-

- /* set engine state */

- if (__operation != OP_DRAWLINE_ZI) {

-    mga_fifo(1);

-    mga_outl(M_DWGCTL, OP_DRAWLINE_ZI);

-    __operation = OP_DRAWLINE_ZI;

- }

-

- if (dx < dy) {

-    dx = dy;

- }

-

- z1 = v1->win[2] << 15;

- dz = ((v2->win[2] << 15) - z1) / dx;

-

- r1 = v1->color[0] << 15;

- g1 = v1->color[1] << 15;

- b1 = v1->color[2] << 15;

- dr = ((v2->color[0] << 15) - r1) / dx;

- dg = ((v2->color[1] << 15) - g1) / dx;

- db = ((v2->color[2] << 15) - b1) / dx;

-

- /* draw the line */

- mga_fifo(14);

- mga_outl(M_DR0, z1);

- mga_outl(M_DR2, dz);

- mga_outl(M_DR3, dz);

- mga_outl(M_DR4, r1);

- mga_outl(M_DR6, dr);

- mga_outl(M_DR7, dr);

- mga_outl(M_DR8, g1);

- mga_outl(M_DR10, dg);

- mga_outl(M_DR11, dg);

- mga_outl(M_DR12, b1);

- mga_outl(M_DR14, db);

- mga_outl(M_DR15, db);

- mga_outl(M_XYSTRT, (y1<<16) | x1);

- mga_outl(M_XYEND | M_EXEC, (y2<<16) | x2);

-}

-

-

-

-/* Desc: RGB flat triangle

- *

- * In  :

- * Out :

- *

- * Note:

- */

-#define TAG mga_draw_tri_rgb_flat

-#define CULL

-#define SETUP_CODE                   \

- if (__operation != OP_DRAWTRAP) {   \

-    mga_fifo(1);                     \

-    mga_outl(M_DWGCTL, OP_DRAWTRAP); \

-    __operation = OP_DRAWTRAP;       \

- }

-#include "m_ttemp.h"

-

-

-

-/* Desc: RGB flat Z-less triangle

- *

- * In  :

- * Out :

- *

- * Note:

- */

-#define TAG mga_draw_tri_rgb_flat_zless

-#define CULL

-#define INTERP_Z

-#define SETUP_CODE                      \

- if (__operation != OP_DRAWTRAP_ZI) {   \

-    mga_fifo(1);                        \

-    mga_outl(M_DWGCTL, OP_DRAWTRAP_ZI); \

-    __operation = OP_DRAWTRAP_ZI;       \

- }

-#include "m_ttemp.h"

-

-

-

-/* Desc: RGB iterated triangle

- *

- * In  :

- * Out :

- *

- * Note:

- */

-#define TAG mga_draw_tri_rgb_iter

-#define CULL

-#define INTERP_RGB

-#define SETUP_CODE                     \

- if (__operation != OP_DRAWTRAP_I) {   \

-    mga_fifo(1);                       \

-    mga_outl(M_DWGCTL, OP_DRAWTRAP_I); \

-    __operation = OP_DRAWTRAP_I;       \

- }

-#include "m_ttemp.h"

-

-

-

-/* Desc: RGB iterated Z-less triangle

- *

- * In  :

- * Out :

- *

- * Note:

- */

-#define TAG mga_draw_tri_rgb_iter_zless

-#define CULL

-#define INTERP_Z

-#define INTERP_RGB

-#define SETUP_CODE                      \

- if (__operation != OP_DRAWTRAP_ZI) {   \

-    mga_fifo(1);                        \

-    mga_outl(M_DWGCTL, OP_DRAWTRAP_ZI); \

-    __operation = OP_DRAWTRAP_ZI;       \

- }

-#include "m_ttemp.h"

-

-

-

-/* Desc: RGB flat rectangle

- *

- * In  :

- * Out :

- *

- * Note:

- */

-void mga_draw_rect_rgb_flat (int left, int top, int width, int height, int color)

-{

- if (__bpp == 8) {

-    color |= color << 8;

- }

- if (__bpp <= 16) {

-    color |= color << 16;

- }

-

- mga_select();

-

- /* set engine state */

- if (__operation != OP_DRAWRECT) {

-

-    mga_fifo(1);

-    mga_outl(M_DWGCTL, OP_DRAWRECT);

-    __operation = OP_DRAWRECT;

- }

-

- /* draw the rectangle */

- mga_fifo(3);

- mga_outl(M_FCOL, color);

- mga_outl(M_FXBNDRY, ((left+width)<<16) | left);

- mga_outl(M_YDSTLEN | M_EXEC, (top<<16) | height);

-}

-

-

-

-/* Desc: 32RGB textured span

- *

- * In  :

- * Out :

- *

- * Note: 0 <= width <= 7*1024

- */

-void mga_draw_span_rgb_tx32 (int left, int top, int width, const unsigned long *bitmap)

-{

- int i;

-

- if (!width) {

-    return;

- }

-

- mga_select();

-

- /* set engine state */

- if (__operation != OP_DRAWRECT_TX32BGR) {

-    mga_fifo(1);

-    mga_outl(M_DWGCTL, OP_DRAWRECT_TX32BGR);

-    __operation = OP_DRAWRECT_TX32BGR;

- }

-

- /* draw the rectangle */

- mga_fifo(2);

- mga_outl(M_FXBNDRY, ((left+width)<<16) | left);

- mga_outl(M_YDSTLEN | M_EXEC, (top<<16) | 1);

-

- /* copy data to the pseudo-dma window */

- i = 0;

- do {

-     mga_outl(i, *bitmap);

-     bitmap++;

-     i += 4;

- } while (--width);

-}

-

-

-

-/* Desc: 24RGB textured span

- *

- * In  :

- * Out :

- *

- * Note: 0 <= width <= 7*1024

- */

-void mga_draw_span_rgb_tx24 (int left, int top, int width, const unsigned long *bitmap)

-{

- int i;

-

- mga_select();

-

- /* set engine state */

- if (__operation != OP_DRAWRECT_TX24BGR) {

-    mga_fifo(1);

-    mga_outl(M_DWGCTL, OP_DRAWRECT_TX24BGR);

-    __operation = OP_DRAWRECT_TX24BGR;

- }

-

- /* draw the rectangle */

- mga_fifo(2);

- mga_outl(M_FXBNDRY, ((left+width)<<16) | left);

- mga_outl(M_YDSTLEN | M_EXEC, (top<<16) | 1);

-

- /* copy data to the pseudo-dma window */

- i = 0;

- width = (width * 3 + 3) / 4;

- while (width) {

-       mga_outl(i & (7 * 1024 - 1), *bitmap);

-       bitmap++;

-       i += 4;

-       width--;

- }

-}

-

-

-

-/* Desc: 32RGB textured rectangle

- *

- * In  :

- * Out :

- *

- * Note:

- */

-void mga_draw_rect_rgb_tx32 (int left, int top, int width, int height, const unsigned long *bitmap)

-{

- int i;

-

- mga_select();

-

- /* set engine state */

- if (__operation != OP_DRAWRECT_TX32BGR) {

-    mga_fifo(1);

-    mga_outl(M_DWGCTL, OP_DRAWRECT_TX32BGR);

-    __operation = OP_DRAWRECT_TX32BGR;

- }

-

- /* draw the rectangle */

- mga_fifo(2);

- mga_outl(M_FXBNDRY, ((left+width)<<16) | left);

- mga_outl(M_YDSTLEN | M_EXEC, (top<<16) | height);

-

- /* copy data to the pseudo-dma window */

- i = 0;

- width *= height;

- while (width) {

-       mga_outl(i & (7 * 1024 - 1), *bitmap);

-       bitmap++;

-       i += 4;

-       width--;

- }

-}

-

-

-

-/* Desc: 24RGB textured rectangle

- *

- * In  :

- * Out :

- *

- * Note:

- */

-void mga_draw_rect_rgb_tx24 (int left, int top, int width, int height, const unsigned long *bitmap)

-{

- int i;

-

- mga_select();

-

- /* set engine state */

- if (__operation != OP_DRAWRECT_TX24BGR) {

-    mga_fifo(1);

-    mga_outl(M_DWGCTL, OP_DRAWRECT_TX24BGR);

-    __operation = OP_DRAWRECT_TX24BGR;

- }

-

- /* draw the rectangle */

- mga_fifo(2);

- mga_outl(M_FXBNDRY, ((left+width)<<16) | left);

- mga_outl(M_YDSTLEN | M_EXEC, (top<<16) | height);

-

- /* copy data to the pseudo-dma window */

- i = 0;

- width = (width * height * 3 + 3) / 4;

- while (width) {

-       mga_outl(i & (7 * 1024 - 1), *bitmap);

-       bitmap++;

-       i += 4;

-       width--;

- }

-}

-

-

-

-/* Desc: copy 32RGB image to screen

- *

- * In  :

- * Out :

- *

- * Note:

- */

-void mga_iload_32RGB (int left, int top, int width, int height, const unsigned long *bitmap)

-{

- int i;

-

- mga_select();

-

- /* set engine state */

- if (__operation != OP_ILOAD_32BGR) {

-    mga_fifo(1);

-    mga_outl(M_DWGCTL, OP_ILOAD_32BGR);

-    __operation = OP_ILOAD_32BGR;

- }

-

- /* draw the bitmap */

- mga_fifo(5);

- mga_outl(M_AR0, width-1);

- mga_outl(M_AR3, 0);

- mga_outl(M_AR5, 0);

- mga_outl(M_FXBNDRY, ((left+width-1)<<16) | left);

- mga_outl(M_YDSTLEN | M_EXEC, (top<<16) | height);

-

- /* copy data to the pseudo-dma window */

- i = 0;

- width *= height;

- while (width) {

-       mga_outl(i & (7 * 1024 - 1), *bitmap);

-       bitmap++;

-       i += 4;

-       width--;

- }

-}

-

-

-

-/* Desc: copy 24RGB image to screen

- *

- * In  :

- * Out :

- *

- * Note:

- */

-void mga_iload_24RGB (int left, int top, int width, int height, const unsigned long *bitmap)

-{

- int i;

-

- mga_select();

-

- /* set engine state */

- if (__operation != OP_ILOAD_24BGR) {

-    mga_fifo(1);

-    mga_outl(M_DWGCTL, OP_ILOAD_24BGR);

-    __operation = OP_ILOAD_24BGR;

- }

-

- /* draw the bitmap */

- mga_fifo(5);

- mga_outl(M_AR0, width-1);

- mga_outl(M_AR3, 0);

- mga_outl(M_AR5, 0);

- mga_outl(M_FXBNDRY, ((left+width-1)<<16) | left);

- mga_outl(M_YDSTLEN | M_EXEC, (top<<16) | height);

-

- /* copy data to the pseudo-dma window */

- i = 0;

- width = (width * height * 3 + 3) / 4;

- while (width) {

-       mga_outl(i & (7 * 1024 - 1), *bitmap);

-       bitmap++;

-       i += 4;

-       width--;

- }

-}

-

-

-

-/* Desc: get Z-buffer value

- *

- * In  :

- * Out :

- *

- * Note:

- */

-unsigned short mga_getz (int offset)

-{

- return hwptr_peekw(mgaptr.linear_map, zorg + (mga_readbuffer_ptr + offset) * 2);

-}

-

-

-

-/* Desc: put Z-buffer value

- *

- * In  :

- * Out :

- *

- * Note:

- */

-void mga_setz (int offset, unsigned short z)

-{

- hwptr_pokew(mgaptr.linear_map, zorg + (mga_writebuffer_ptr + offset) * 2, z);

-}

-

-

-

-/* Desc: clear Z-buffer

- *

- * In  :

- * Out :

- *

- * Note: uses current write buffer

- */

-static void _mga_clear_zed (int left, int top, int width, int height, unsigned short z)

-{

- if (__bpp == 16) {

-    /* GPU store (high bandwidth)

-     * Hack alert:

-     * can cause problems with concurrent FB accesses

-     */

-    mga_select();

-    mga_fifo(1);

-    mga_outl(M_YDSTORG, mga_writebuffer_ptr + zorg/2);

-    mga_draw_rect_rgb_flat(left, top, width, height, z);

-    mga_fifo(1);

-    mga_outl(M_YDSTORG, mga_writebuffer_ptr);

- } else {

-    /* CPU store */

-    unsigned long i, zz = (z<<16) | z;

-    unsigned long ofs = zorg + (top * __pixwidth + left + mga_writebuffer_ptr) * 2;

-    hwptr_select(mgaptr.linear_map);

-    while (height--) {

-          i = width/2;

-          while (i--) {

-                hwptr_nspokel(mgaptr.linear_map, ofs, zz);

-                ofs += 4;

-          }

-          if (width & 1) {

-             hwptr_nspokew(mgaptr.linear_map, ofs, z);

-             ofs += 2;

-          }

-          ofs += (__pixwidth - width) * 2;

-    }

- }

-}

-

-

-

-/* Desc: clear color- and Z-buffer

- *

- * In  : front  = clear front buffer

- *       back   = clear back buffer

- *       zed    = clear depth buffer

- *       left   = leftmost pixel to be cleared

- *       top    = starting line

- *       width  = number of pixels

- *       height = number of lines

- *       color  = color to clear to

- *       z      = z value (ignored if zed==0)

- * Out :

- *

- * Note:

- */

-void mga_clear (int front, int back, int zed, int left, int top, int width, int height, int color, unsigned short z)

-{

- if (front) {

-    if (mga_writebuffer == MGA_FRONTBUFFER) {

-       mga_draw_rect_rgb_flat(left, top, width, height, color);

-       if (zed) {

-          _mga_clear_zed(left, top, width, height, z);

-       }

-       front = 0;

-    }

- }

- if (back) {

-    if (mga_writebuffer == MGA_BACKBUFFER) {

-       mga_draw_rect_rgb_flat(left, top, width, height, color);

-       if (zed) {

-          _mga_clear_zed(left, top, width, height, z);

-       }

-       back = 0;

-    }

- }

- if (front) {

-    int old = mga_writebuffer;

-    mga_set_writebuffer(MGA_FRONTBUFFER);

-    mga_draw_rect_rgb_flat(left, top, width, height, color);

-    if (zed) {

-       _mga_clear_zed(left, top, width, height, z);

-    }

-    mga_set_writebuffer(old);

-    front = 0;

- }

- if (back) {

-    int old = mga_writebuffer;

-    mga_set_writebuffer(MGA_BACKBUFFER);

-    mga_draw_rect_rgb_flat(left, top, width, height, color);

-    if (zed) {

-       _mga_clear_zed(left, top, width, height, z);

-    }

-    mga_set_writebuffer(old);

-    back = 0;

- }

-}

-

-

-

-/* Desc: Attempts to enter specified video mode.

- *

- * In  : ptr to mode structure, number of pages, Z-buffer request, refresh rate

- * Out : 0 if success

- *

- * Note: also set up the accelerator engine

- */

-int mga_open (int width, int height, int bpp, int buffers, int zbuffer, int refresh)

-{

- static int mill_strides[] = { 640, 768, 800, 960, 1024, 1152, 1280, 1600, 1920, 2048, 0 };

- unsigned int i, used;

- MGA_MODE *p;

-

- if (mga_hw_init(&vram, &interleave, card_name) == 0) {

-    return -1;

- }

-

- if ((p = mga_mode_find(width, height, bpp)) == NULL) {

-    return -1;

- }

-

- __bpp = p->bpp;

- __width = __pagewidth = p->xres;

- __height = p->yres;

-

- if (buffers > 1) {

-    __pagewidth = _mga_fix_scans(__pagewidth);

-    __pixwidth = __pagewidth * buffers;

- } else {

-    __pixwidth = __pagewidth;

-    __pixwidth = _mga_fix_scans(__pixwidth);

- }

-

- for (i=0; mill_strides[i]; i++) {

-     if (__pixwidth <= mill_strides[i]) {

-        __pixwidth = mill_strides[i];

-        break;

-     }

- }

-

- __bypp = (__bpp+7)/8;

- __bytwidth = __pixwidth * __bypp;

-

- /* compute used memory: framebuffer + zbuffer */

- used = __bytwidth * __height;

- if (zbuffer) {

-    zorg = (used + 511) & ~511;

-    /* Hack alert:

-     * a 16-bit Z-buffer size is (stride_in_pixels * number_of_lines * 2)

-     * We cannot mess with the Z-buffer width, but we might decrease the

-     * number of lines, if the user requests less than (screen_height). For

-     * example with a 2MB card, one can have 640x480x16 display with 2 color

-     * buffers and Z-buffer if the maximum requested height is 339:

-     *    Total = (640*480 * 2 + 640*339 * 2) * 2

-     * However, this means the user must not write beyond the window's height

-     * and if we'll ever implement moveable windows, we'll have to reconsider

-     * this hack.

-     */

-#if 1

-    __zheight = height;  /* smaller */

-    used = zorg + __pixwidth * 2 * __zheight;

-#else

-    __zheight = __height;

-    used = zorg + __pixwidth * 2 * __zheight;

-#endif

- }

-

- if (mill_strides[i] && (vram>=used)) {

-    /* enter mode */

-    mga_mode_switch(p, refresh);

-    /* change the scan line length */

-    _mga_ralter(M_CRTC_INDEX, 0x14, 0x40, 0);           /* disable DWORD */

-    _mga_ralter(M_CRTC_INDEX, 0x17, 0x40, 0x40);        /* wbmode = BYTE */

-    if (interleave) {

-       _mga_rwrite(M_CRTC_INDEX, 0x13, __bytwidth/16);

-       _mga_ralter(M_CRTC_EXT_INDEX, 0, 0x30, ((__bytwidth/16)>>4)&0x30);

-    } else {

-       _mga_rwrite(M_CRTC_INDEX, 0x13, __bytwidth/8);

-       _mga_ralter(M_CRTC_EXT_INDEX, 0, 0x30, ((__bytwidth/8)>>4)&0x30);

-    }

- } else {

-    return -1;

- }

-

- /* setup buffers */

- mga_frontbuffer_ptr = 0;

- if (buffers > 1) {

-    mga_backbuffer_ptr = __pagewidth;

-    mga_set_readbuffer(MGA_BACKBUFFER);

-    mga_set_writebuffer(MGA_BACKBUFFER);

- } else {

-    mga_backbuffer_ptr = 0;

-    mga_set_readbuffer(MGA_FRONTBUFFER);

-    mga_set_writebuffer(MGA_FRONTBUFFER);

- }

- mga_display_start(mga_frontbuffer_ptr, __scrollx = 0, __scrolly = 0, 1);

-

- /* set up the accelerator engine */

- mga_select();

-

- mga_fifo(8);

- mga_outl(M_PITCH, __pixwidth);

- mga_outl(M_PLNWT, 0xFFFFFFFF);

- mga_outl(M_OPMODE, M_DMA_BLIT);

- mga_outl(M_CXBNDRY, 0xFFFF0000);

- mga_outl(M_YTOP, 0x00000000);

- mga_outl(M_YBOT, 0x007FFFFF);

- mga_outl(M_ZORG, zorg);

-

-#define INITPTR(bpp) \

-        mga_putpixel = _mga_putpixel##bpp; \

-        mga_getrgba = _mga_getrgba##bpp;   \

-        mga_getpixel = _mga_getpixel##bpp; \

-        mga_mixrgb = _mga_mixrgb##bpp;     \

-        mga_mixrgb_full = _mga_mixrgb##bpp##_full

-

- switch (__bpp) {

-	case 8:

-	     mga_outl(M_MACCESS, 0);

-             INITPTR(8);

-	     break;

-	case 15:

-	     mga_outl(M_MACCESS, 0x80000001);

-             INITPTR(15);

-	     break;

-	case 16:

-	     mga_outl(M_MACCESS, 1);

-             INITPTR(16);

-	     break;

-	case 32:

-	     mga_outl(M_MACCESS, 2);

-             INITPTR(32);

-	     break;

- }

-

-#undef INITPTR

-

- /* disable VGA aperture */

- i = mga_inb(M_MISC_R);

- mga_outb(M_MISC_W, i & ~2);

-

- /* clear Z-buffer (if any) */

- if (zbuffer) {

-    unsigned long ofs = zorg;

-    unsigned long len = zorg + __pixwidth * 2 * __zheight;

-

-    hwptr_select(mgaptr.linear_map);

-    for (; ofs<len; ofs+=4) {

-        hwptr_nspokel(mgaptr.linear_map, ofs, -1);

-    }

- }

-

- return 0;

-}

-

-

-

-/* Desc:

- *

- * In  :

- * Out :

- *

- * Note:

- */

-void mga_close (int restore, int unmap)

-{

- if (restore) {

-    mga_mode_restore();

- }

- if (unmap) {

-    mga_hw_fini();

- }

-}

-

-

-

-/* Desc: state retrieval

- *

- * In  : parameter name, ptr to storage

- * Out : 0 if request successfully processed

- *

- * Note: -

- */

-int mga_get (int pname, int *params)

-{

- switch (pname) {

-        case MGA_GET_CARD_NAME:

-             strcat(strcpy((char *)params, "Matrox "), card_name);

-             break;

-        case MGA_GET_VRAM:

-             params[0] = vram;

-             break;

-        case MGA_GET_CI_PREC:

-             params[0] = 0;

-             break;

-        case MGA_GET_HPIXELS:

-             params[0] = __pixwidth;

-             break;

-        case MGA_GET_SCREEN_SIZE:

-             params[0] = __width;

-             params[1] = __height;

-             break;

-        default:

-             return -1;

- }

- return 0;

-}

+/*
+ * Mesa 3-D graphics library
+ * Version:  5.0
+ * 
+ * Copyright (C) 1999-2002  Brian Paul   All Rights Reserved.
+ * 
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ * 
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/*
+ * DOS/DJGPP device driver v1.3 for Mesa  --  MGA2064W
+ *
+ *  Copyright (c) 2003 - Borca Daniel
+ *  Email : dborca@yahoo.com
+ *  Web   : http://www.geocities.com/dborca
+ *
+ * Thanks to Shawn Hargreaves for FreeBE/AF
+ */
+
+
+#include <dpmi.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "../internal.h"
+#include "mga_reg.h"
+#include "mga_hw.h"
+#include "mga_mode.h"
+#include "mga.h"
+
+
+
+/* cached drawing engine state */
+#define OP_NONE 0
+
+#define OP_DRAWRECT (\
+           M_DWG_TRAP |           /* opcod */    \
+           M_DWG_BLK |            /* atype */    \
+                                  /* linear */   \
+           M_DWG_NOZCMP |         /* zmode */    \
+           M_DWG_SOLID |          /* solid */    \
+           M_DWG_ARZERO |         /* arzero */   \
+           M_DWG_SGNZERO |        /* sgnzero */  \
+           M_DWG_SHFTZERO |       /* shftzero */ \
+           M_DWG_BOP_SRC          /* bop */      \
+                                  /* trans */    \
+                                  /* bltmod */   \
+                                  /* pattern */  \
+                                  /* transc */   )
+#define OP_DRAWRECT_TX32BGR (\
+           M_DWG_TEXTURE_TRAP |   /* opcod */    \
+           M_DWG_I |              /* atype */    \
+                                  /* linear */   \
+           M_DWG_NOZCMP |         /* zmode */    \
+                                  /* solid */    \
+           M_DWG_ARZERO |         /* arzero */   \
+           M_DWG_SGNZERO |        /* sgnzero */  \
+           M_DWG_SHFTZERO |       /* shftzero */ \
+           M_DWG_BOP_SRC |        /* bop */      \
+                                  /* trans */    \
+           M_DWG_BU32BGR          /* bltmod */   \
+                                  /* pattern */  \
+                                  /* transc */   )
+#define OP_DRAWRECT_TX24BGR (\
+           M_DWG_TEXTURE_TRAP |   /* opcod */    \
+           M_DWG_I |              /* atype */    \
+                                  /* linear */   \
+           M_DWG_NOZCMP |         /* zmode */    \
+                                  /* solid */    \
+           M_DWG_ARZERO |         /* arzero */   \
+           M_DWG_SGNZERO |        /* sgnzero */  \
+           M_DWG_SHFTZERO |       /* shftzero */ \
+           M_DWG_BOP_SRC |        /* bop */      \
+                                  /* trans */    \
+           M_DWG_BU24BGR          /* bltmod */   \
+                                  /* pattern */  \
+                                  /* transc */   )
+#define OP_DRAWLINE (\
+           M_DWG_AUTOLINE_CLOSE | /* opcod */    \
+           M_DWG_RPL |            /* atype */    \
+                                  /* linear */   \
+           M_DWG_NOZCMP |         /* zmode */    \
+           M_DWG_SOLID |          /* solid */    \
+                                  /* arzero */   \
+                                  /* sgnzero */  \
+           M_DWG_SHFTZERO |       /* shftzero */ \
+           M_DWG_BOP_SRC |        /* bop */      \
+                                  /* trans */    \
+           M_DWG_BFCOL            /* bltmod */   \
+                                  /* pattern */  \
+                                  /* transc */   )
+#define OP_DRAWLINE_I (\
+           M_DWG_AUTOLINE_CLOSE | /* opcod */    \
+           M_DWG_I |              /* atype */    \
+                                  /* linear */   \
+           M_DWG_NOZCMP |         /* zmode */    \
+                                  /* solid */    \
+                                  /* arzero */   \
+                                  /* sgnzero */  \
+                                  /* shftzero */ \
+           M_DWG_BOP_SRC |        /* bop */      \
+                                  /* trans */    \
+           M_DWG_BFCOL            /* bltmod */   \
+                                  /* pattern */  \
+                                  /* transc */   )
+#define OP_DRAWLINE_ZI (\
+           M_DWG_AUTOLINE_CLOSE | /* opcod */    \
+           M_DWG_ZI |             /* atype */    \
+                                  /* linear */   \
+           M_DWG_ZLT |            /* zmode */    \
+                                  /* solid */    \
+                                  /* arzero */   \
+                                  /* sgnzero */  \
+                                  /* shftzero */ \
+           M_DWG_BOP_SRC |        /* bop */      \
+                                  /* trans */    \
+           M_DWG_BFCOL            /* bltmod */   \
+                                  /* pattern */  \
+                                  /* transc */   )
+#define OP_DRAWTRAP (\
+           M_DWG_TRAP |           /* opcod */    \
+           M_DWG_BLK |            /* atype */    \
+                                  /* linear */   \
+           M_DWG_NOZCMP |         /* zmode */    \
+           M_DWG_SOLID |          /* solid */    \
+                                  /* arzero */   \
+                                  /* sgnzero */  \
+           M_DWG_SHFTZERO |       /* shftzero */ \
+           M_DWG_BOP_SRC          /* bop */      \
+                                  /* trans */    \
+                                  /* bltmod */   \
+                                  /* pattern */  \
+                                  /* transc */   )
+#define OP_DRAWTRAP_I (\
+           M_DWG_TRAP |           /* opcod */    \
+           M_DWG_I |              /* atype */    \
+                                  /* linear */   \
+           M_DWG_NOZCMP |         /* zmode */    \
+                                  /* solid */    \
+                                  /* arzero */   \
+                                  /* sgnzero */  \
+           M_DWG_SHFTZERO |       /* shftzero */ \
+           M_DWG_BOP_SRC          /* bop */      \
+                                  /* trans */    \
+                                  /* bltmod */   \
+                                  /* pattern */  \
+                                  /* transc */   )
+#define OP_DRAWTRAP_ZI (\
+           M_DWG_TRAP |           /* opcod */    \
+           M_DWG_ZI |             /* atype */    \
+                                  /* linear */   \
+           M_DWG_ZLT |            /* zmode */    \
+                                  /* solid */    \
+                                  /* arzero */   \
+                                  /* sgnzero */  \
+           M_DWG_SHFTZERO |       /* shftzero */ \
+           M_DWG_BOP_SRC          /* bop */      \
+                                  /* trans */    \
+                                  /* bltmod */   \
+                                  /* pattern */  \
+                                  /* transc */   )
+#define OP_ILOAD_32BGR (\
+           M_DWG_ILOAD |          /* opcod */    \
+           M_DWG_RPL |            /* atype */    \
+                                  /* linear */   \
+                                  /* zmode */    \
+                                  /* solid */    \
+                                  /* arzero */   \
+           M_DWG_SGNZERO |        /* sgnzero */  \
+           M_DWG_SHFTZERO |       /* shftzero */ \
+           M_DWG_BOP_SRC |        /* bop */      \
+                                  /* trans */    \
+           M_DWG_BU32BGR          /* bltmod */   \
+                                  /* pattern */  \
+                                  /* transc */   )
+#define OP_ILOAD_24BGR (\
+           M_DWG_ILOAD |          /* opcod */    \
+           M_DWG_RPL |            /* atype */    \
+                                  /* linear */   \
+                                  /* zmode */    \
+                                  /* solid */    \
+                                  /* arzero */   \
+           M_DWG_SGNZERO |        /* sgnzero */  \
+           M_DWG_SHFTZERO |       /* shftzero */ \
+           M_DWG_BOP_SRC |        /* bop */      \
+                                  /* trans */    \
+           M_DWG_BU24BGR          /* bltmod */   \
+                                  /* pattern */  \
+                                  /* transc */   )
+
+
+
+/* internal hardware data structures */
+static int interleave;
+static unsigned long zorg;
+static unsigned long vram;
+static char card_name[80];
+
+
+
+/* some info about current mode */
+static int __bpp, __bypp;
+static int __pixwidth, __bytwidth, __pagewidth, __width, __height, __zheight;
+static int __operation;
+static int __scrollx, __scrolly;
+
+
+
+/* buffers */
+static int mga_readbuffer, mga_writebuffer;
+static long mga_readbuffer_ptr, mga_writebuffer_ptr;
+static long mga_backbuffer_ptr, mga_frontbuffer_ptr;
+
+
+
+/* lookup table for scaling 2 bit colors up to 8 bits */
+static int _rgb_scale_2[4] = {
+       0, 85, 170, 255
+};
+
+/* lookup table for scaling 3 bit colors up to 8 bits */
+static int _rgb_scale_3[8] = {
+       0, 36, 73, 109, 146, 182, 219, 255
+};
+
+/* lookup table for scaling 5 bit colors up to 8 bits */
+static int _rgb_scale_5[32] = {
+   0,   8,   16,  25,  33,  41,  49,  58,
+   66,  74,  82,  90,  99,  107, 115, 123,
+   132, 140, 148, 156, 165, 173, 181, 189,
+   197, 206, 214, 222, 230, 239, 247, 255
+};
+
+/* lookup table for scaling 6 bit colors up to 8 bits */
+static int _rgb_scale_6[64] = {
+   0,   4,   8,   12,  16,  20,  24,  28,
+   32,  36,  40,  45,  49,  53,  57,  61,
+   65,  69,  73,  77,  81,  85,  89,  93,
+   97,  101, 105, 109, 113, 117, 121, 125,
+   130, 134, 138, 142, 146, 150, 154, 158,
+   162, 166, 170, 174, 178, 182, 186, 190,
+   194, 198, 202, 206, 210, 215, 219, 223,
+   227, 231, 235, 239, 243, 247, 251, 255
+};
+
+
+
+/*
+ * pixel/color routines
+ */
+void (*mga_putpixel) (unsigned int offset, int color);
+int (*mga_getpixel) (unsigned int offset);
+void (*mga_getrgba) (unsigned int offset, unsigned char rgba[4]);
+int (*mga_mixrgb) (const unsigned char rgb[]);
+static int (*mga_mixrgb_full) (const unsigned char rgb[]);
+
+
+
+/* mga_fifo:
+ *  Waits until there are at least <n> free slots in the FIFO buffer.
+ */
+#define mga_fifo(n) do { } while (mga_inb(M_FIFOSTATUS) < (n))
+
+
+
+static int _mga_rread (int port, int index)
+{
+ mga_select();
+ mga_outb(port, index);
+ return mga_inb(port+1);
+}
+
+
+
+static void _mga_rwrite (int port, int index, int v)
+{
+ mga_select();
+ mga_outb(port, index);
+ mga_outb(port+1, v);
+}
+
+
+
+static void _mga_ralter (int port, int index, int mask, int v)
+{
+ int temp;
+ temp = _mga_rread(port, index);
+ temp &= (~mask);
+ temp |= (v & mask);
+ _mga_rwrite(port, index, temp);
+}
+
+
+
+/* WaitTillIdle:
+ *  Delay until the hardware controller has finished drawing.
+ */
+void mga_wait_idle (void)
+{
+ int tries = 2;
+
+ /*hwptr_unselect(oldptr);*/
+
+ mga_select();
+
+ while (tries--) {
+       do {
+       } while (!(mga_inl(M_FIFOSTATUS) & 0x200));
+
+       do {
+       } while (mga_inl(M_STATUS) & 0x10000);
+
+       mga_outb(M_CRTC_INDEX, 0);
+ }
+
+ /*hwptr_select(oldptr);*/
+}
+
+
+
+/* Desc: Waits for the next vertical sync period.
+ *
+ * In  :
+ * Out :
+ *
+ * Note:
+ */
+static void _mga_wait_retrace (void)
+{
+ int t1 = 0;
+ int t2 = 0;
+
+ do {
+     t1 = t2;
+     t2 = mga_inl(M_VCOUNT);
+ } while (t2 >= t1);
+}
+
+
+
+/* Desc: fix scan lines
+ *
+ * In  :
+ * Out :
+ *
+ * Note:
+ */
+static unsigned long _mga_fix_scans (unsigned long l)
+{
+ unsigned long m = 0;
+
+ switch (__bpp) {
+        case 8:
+             m = interleave?128:64;
+             break;
+        case 15:
+        case 16:
+             m = interleave?64:32;
+             break;
+        case 24:
+             m = interleave?128:64;
+             break;
+        case 32:
+             m = 32;
+             break;
+ }
+
+ m -= 1;
+ return (l + m) & ~m;
+}
+
+
+
+/* Desc: HW scrolling function
+ *
+ * In  :
+ * Out :
+ *
+ * Note: view Z-buffer in 16bit modes: _mga_display_start(0, 0, __height, 1)
+ */
+void mga_display_start (long boffset, long x, long y, long waitVRT)
+{
+ long addr;
+
+ mga_select();
+
+ if (waitVRT >= 0) {
+
+    addr = __bytwidth * y + (boffset + x) * __bypp;
+
+    if (interleave) {
+       addr /= 8;
+    } else {
+       addr /= 4;
+    }
+
+    _mga_rwrite(M_CRTC_INDEX, 0x0D, (addr)&0xFF);
+    _mga_rwrite(M_CRTC_INDEX, 0x0C, (addr>>8)&0xFF);
+    _mga_ralter(M_CRTC_EXT_INDEX, 0, 0x0F, (addr>>16)&0x0F);
+
+    while (waitVRT--) {
+          _mga_wait_retrace();
+    }
+ }
+
+ __scrollx = x;
+ __scrolly = y;
+}
+
+
+
+/* Desc: set READ buffer
+ *
+ * In  : either FRONT or BACK buffer
+ * Out :
+ *
+ * Note:
+ */
+void mga_set_readbuffer (int buffer)
+{
+ mga_readbuffer = buffer;
+
+ mga_readbuffer_ptr = (mga_readbuffer == MGA_FRONTBUFFER) ? mga_frontbuffer_ptr : mga_backbuffer_ptr;
+}
+
+
+
+/* Desc: set WRITE buffer
+ *
+ * In  : either FRONT or BACK buffer
+ * Out :
+ *
+ * Note:
+ */
+void mga_set_writebuffer (int buffer)
+{
+ mga_writebuffer = buffer;
+
+ mga_writebuffer_ptr = (mga_writebuffer == MGA_FRONTBUFFER) ? mga_frontbuffer_ptr : mga_backbuffer_ptr;
+
+ mga_select();
+ mga_fifo(1);
+ mga_outl(M_YDSTORG, mga_writebuffer_ptr);
+
+ __operation = OP_NONE;
+}
+
+
+
+/* Desc: swap buffers
+ *
+ * In  : number of vertical retraces to wait
+ * Out :
+ *
+ * Note:
+ */
+void mga_swapbuffers (int swapinterval)
+{
+ /* flip the buffers */
+ mga_backbuffer_ptr ^= __pagewidth;
+ mga_frontbuffer_ptr ^= __pagewidth;
+
+ /* update READ/WRITE pointers */
+ mga_set_readbuffer(mga_readbuffer);
+ mga_set_writebuffer(mga_writebuffer);
+
+ /* make sure we always see the FRONT buffer */
+ mga_display_start(mga_frontbuffer_ptr, __scrollx, __scrolly, swapinterval);
+}
+
+
+
+/* Desc: color composition (w/o ALPHA)
+ *
+ * In  : array of integers (R, G, B)
+ * Out : color
+ *
+ * Note: -
+ */
+static __inline int _mga_mixrgb8 (const unsigned char rgb[])
+{
+ return (rgb[0]&0xe0)|((rgb[1]>>5)<<2)|(rgb[2]>>6);
+}
+static __inline int _mga_mixrgb15 (const unsigned char rgb[])
+{
+ return ((rgb[0]>>3)<<10)|((rgb[1]>>3)<<5)|(rgb[2]>>3);
+}
+static __inline int _mga_mixrgb16 (const unsigned char rgb[])
+{
+ return ((rgb[0]>>3)<<11)|((rgb[1]>>2)<<5)|(rgb[2]>>3);
+}
+static __inline int _mga_mixrgb32 (const unsigned char rgb[])
+{
+ return (rgb[0]<<16)|(rgb[1]<<8)|(rgb[2]);
+}
+
+
+
+/* Desc: color composition (w/o ALPHA) + replication
+ *
+ * In  : array of integers (R, G, B)
+ * Out : color
+ *
+ * Note: -
+ */
+static int _mga_mixrgb8_full (const unsigned char rgb[])
+{
+ int color = _mga_mixrgb8(rgb);
+ color |= color<<8;
+ return (color<<16) | color;
+}
+static int _mga_mixrgb15_full (const unsigned char rgb[])
+{
+ int color = _mga_mixrgb15(rgb);
+ return (color<<16) | color;
+}
+static int _mga_mixrgb16_full (const unsigned char rgb[])
+{
+ int color = _mga_mixrgb16(rgb);
+ return (color<<16) | color;
+}
+#define _mga_mixrgb32_full _mga_mixrgb32
+
+
+
+/* Desc: putpixel
+ *
+ * In  : pixel offset, pixel value
+ * Out : -
+ *
+ * Note: uses current write buffer
+ */
+static void _mga_putpixel8 (unsigned int offset, int color)
+{
+ hwptr_pokeb(mgaptr.linear_map, mga_writebuffer_ptr + offset, color);
+}
+#define _mga_putpixel15 _mga_putpixel16
+static void _mga_putpixel16 (unsigned int offset, int color)
+{
+ hwptr_pokew(mgaptr.linear_map, (mga_writebuffer_ptr + offset) * 2, color);
+}
+static void _mga_putpixel32 (unsigned int offset, int color)
+{
+ hwptr_pokel(mgaptr.linear_map, (mga_writebuffer_ptr + offset) * 4, color);
+}
+
+
+
+/* Desc: pixel retrieval
+ *
+ * In  : pixel offset
+ * Out : pixel value
+ *
+ * Note: uses current read buffer
+ */
+static __inline int _mga_getpixel8 (unsigned int offset)
+{
+ return hwptr_peekb(mgaptr.linear_map, mga_readbuffer_ptr + offset);
+}
+#define _mga_getpixel15 _mga_getpixel16
+static __inline int _mga_getpixel16 (unsigned int offset)
+{
+ return hwptr_peekw(mgaptr.linear_map, (mga_readbuffer_ptr + offset) * 2);
+}
+static __inline int _mga_getpixel32 (unsigned int offset)
+{
+ return hwptr_peekl(mgaptr.linear_map, (mga_readbuffer_ptr + offset) * 4);
+}
+
+
+
+/* Desc: color decomposition
+ *
+ * In  : pixel offset, array of integers to hold color components (R, G, B, A)
+ * Out : -
+ *
+ * Note: uses current read buffer
+ */
+static void _mga_getrgba8 (unsigned int offset, unsigned char rgba[4])
+{
+ int c = _mga_getpixel8(offset);
+ rgba[0] = _rgb_scale_3[(c >> 5) & 0x7];
+ rgba[1] = _rgb_scale_3[(c >> 2) & 0x7];
+ rgba[2] = _rgb_scale_2[c & 0x3];
+ rgba[3] = 255;
+}
+static void _mga_getrgba15 (unsigned int offset, unsigned char rgba[4])
+{
+ int c = _mga_getpixel15(offset);
+ rgba[0] = _rgb_scale_5[(c >> 10) & 0x1F];
+ rgba[1] = _rgb_scale_5[(c >> 5) & 0x1F];
+ rgba[2] = _rgb_scale_5[c & 0x1F];
+ rgba[3] = 255;
+}
+static void _mga_getrgba16 (unsigned int offset, unsigned char rgba[4])
+{
+ int c = _mga_getpixel16(offset);
+ rgba[0] = _rgb_scale_5[(c >> 11) & 0x1F];
+ rgba[1] = _rgb_scale_6[(c >> 5) & 0x3F];
+ rgba[2] = _rgb_scale_5[c & 0x1F];
+ rgba[3] = 255;
+}
+static void _mga_getrgba32 (unsigned int offset, unsigned char rgba[4])
+{
+ int c = _mga_getpixel32(offset);
+ rgba[0] = c >> 16;
+ rgba[1] = c >> 8;
+ rgba[2] = c; 
+ rgba[3] = c >> 24;
+}
+
+
+
+/* Desc: RGB flat line
+ *
+ * In  :
+ * Out :
+ *
+ * Note:
+ */
+void mga_draw_line_rgb_flat (const MGAvertex *v1, const MGAvertex *v2)
+{
+ unsigned long color;
+ int x1 = v1->win[0];
+ int y1 = v1->win[1];
+ int x2 = v2->win[0];
+ int y2 = v2->win[1];
+
+ if ((x1 == x2) && (y1 == y2)) {
+    return;
+ }
+
+ mga_select();
+
+ /* set engine state */
+ if (__operation != OP_DRAWLINE) {
+    mga_fifo(1);
+    mga_outl(M_DWGCTL, OP_DRAWLINE);
+    __operation = OP_DRAWLINE;
+ }
+
+ color = mga_mixrgb_full(v2->color);
+
+ /* draw the line */
+ mga_fifo(3);
+ mga_outl(M_FCOL, color);
+ mga_outl(M_XYSTRT, (y1<<16) | x1);
+ mga_outl(M_XYEND | M_EXEC, (y2<<16) | x2);
+}
+
+
+
+/* Desc: RGB flat Z-less line
+ *
+ * In  :
+ * Out :
+ *
+ * Note: I never figured out "diagonal increments"
+ */
+void mga_draw_line_rgb_flat_zless (const MGAvertex *v1, const MGAvertex *v2)
+{
+ int z1, dz;
+ int x1 = v1->win[0];
+ int y1 = v1->win[1];
+ int x2 = v2->win[0];
+ int y2 = v2->win[1];
+ int dx = abs(x2 - x1);
+ int dy = abs(y2 - y1);
+
+ if ((dx == 0) && (dy == 0)) {
+    return;
+ }
+
+ mga_select();
+
+ /* set engine state */
+ if (__operation != OP_DRAWLINE_ZI) {
+    mga_fifo(1);
+    mga_outl(M_DWGCTL, OP_DRAWLINE_ZI);
+    __operation = OP_DRAWLINE_ZI;
+ }
+
+ if (dx < dy) {
+    dx = dy;
+ }
+
+ z1 = v1->win[2] << 15;
+ dz = ((v2->win[2] << 15) - z1) / dx;
+
+ /* draw the line */
+ mga_fifo(14);
+ mga_outl(M_DR0, z1);
+ mga_outl(M_DR2, dz);
+ mga_outl(M_DR3, dz);
+ mga_outl(M_DR4, v2->color[0] << 15);
+ mga_outl(M_DR6, 0);
+ mga_outl(M_DR7, 0);
+ mga_outl(M_DR8, v2->color[1] << 15);
+ mga_outl(M_DR10, 0);
+ mga_outl(M_DR11, 0);
+ mga_outl(M_DR12, v2->color[2] << 15);
+ mga_outl(M_DR14, 0);
+ mga_outl(M_DR15, 0);
+ mga_outl(M_XYSTRT, (y1<<16) | x1);
+ mga_outl(M_XYEND | M_EXEC, (y2<<16) | x2);
+}
+
+
+
+/* Desc: RGB iterated line
+ *
+ * In  :
+ * Out :
+ *
+ * Note: I never figured out "diagonal increments"
+ */
+void mga_draw_line_rgb_iter (const MGAvertex *v1, const MGAvertex *v2)
+{
+ int r1, g1, b1;
+ int dr, dg, db;
+ int x1 = v1->win[0];
+ int y1 = v1->win[1];
+ int x2 = v2->win[0];
+ int y2 = v2->win[1];
+ int dx = abs(x2 - x1);
+ int dy = abs(y2 - y1);
+
+ if ((dx == 0) && (dy == 0)) {
+    return;
+ }
+
+ mga_select();
+
+ /* set engine state */
+ if (__operation != OP_DRAWLINE_I) {
+    mga_fifo(1);
+    mga_outl(M_DWGCTL, OP_DRAWLINE_I);
+    __operation = OP_DRAWLINE_I;
+ }
+
+ if (dx < dy) {
+    dx = dy;
+ }
+
+ r1 = v1->color[0] << 15;
+ g1 = v1->color[1] << 15;
+ b1 = v1->color[2] << 15;
+ dr = ((v2->color[0] << 15) - r1) / dx;
+ dg = ((v2->color[1] << 15) - g1) / dx;
+ db = ((v2->color[2] << 15) - b1) / dx;
+
+ /* draw the line */
+ mga_fifo(11);
+ mga_outl(M_DR4, r1);
+ mga_outl(M_DR6, dr);
+ mga_outl(M_DR7, dr);
+ mga_outl(M_DR8, g1);
+ mga_outl(M_DR10, dg);
+ mga_outl(M_DR11, dg);
+ mga_outl(M_DR12, b1);
+ mga_outl(M_DR14, db);
+ mga_outl(M_DR15, db);
+ mga_outl(M_XYSTRT, (y1<<16) | x1);
+ mga_outl(M_XYEND | M_EXEC, (y2<<16) | x2);
+}
+
+
+
+/* Desc: RGB iterated Z-less line
+ *
+ * In  :
+ * Out :
+ *
+ * Note: I never figured out "diagonal increments"
+ */
+void mga_draw_line_rgb_iter_zless (const MGAvertex *v1, const MGAvertex *v2)
+{
+ int z1, dz;
+ int r1, g1, b1;
+ int dr, dg, db;
+ int x1 = v1->win[0];
+ int y1 = v1->win[1];
+ int x2 = v2->win[0];
+ int y2 = v2->win[1];
+ int dx = abs(x2 - x1);
+ int dy = abs(y2 - y1);
+
+ if ((dx == 0) && (dy == 0)) {
+    return;
+ }
+
+ mga_select();
+
+ /* set engine state */
+ if (__operation != OP_DRAWLINE_ZI) {
+    mga_fifo(1);
+    mga_outl(M_DWGCTL, OP_DRAWLINE_ZI);
+    __operation = OP_DRAWLINE_ZI;
+ }
+
+ if (dx < dy) {
+    dx = dy;
+ }
+
+ z1 = v1->win[2] << 15;
+ dz = ((v2->win[2] << 15) - z1) / dx;
+
+ r1 = v1->color[0] << 15;
+ g1 = v1->color[1] << 15;
+ b1 = v1->color[2] << 15;
+ dr = ((v2->color[0] << 15) - r1) / dx;
+ dg = ((v2->color[1] << 15) - g1) / dx;
+ db = ((v2->color[2] << 15) - b1) / dx;
+
+ /* draw the line */
+ mga_fifo(14);
+ mga_outl(M_DR0, z1);
+ mga_outl(M_DR2, dz);
+ mga_outl(M_DR3, dz);
+ mga_outl(M_DR4, r1);
+ mga_outl(M_DR6, dr);
+ mga_outl(M_DR7, dr);
+ mga_outl(M_DR8, g1);
+ mga_outl(M_DR10, dg);
+ mga_outl(M_DR11, dg);
+ mga_outl(M_DR12, b1);
+ mga_outl(M_DR14, db);
+ mga_outl(M_DR15, db);
+ mga_outl(M_XYSTRT, (y1<<16) | x1);
+ mga_outl(M_XYEND | M_EXEC, (y2<<16) | x2);
+}
+
+
+
+/* Desc: RGB flat triangle
+ *
+ * In  :
+ * Out :
+ *
+ * Note:
+ */
+#define TAG mga_draw_tri_rgb_flat
+#define CULL
+#define SETUP_CODE                   \
+ if (__operation != OP_DRAWTRAP) {   \
+    mga_fifo(1);                     \
+    mga_outl(M_DWGCTL, OP_DRAWTRAP); \
+    __operation = OP_DRAWTRAP;       \
+ }
+#include "m_ttemp.h"
+
+
+
+/* Desc: RGB flat Z-less triangle
+ *
+ * In  :
+ * Out :
+ *
+ * Note:
+ */
+#define TAG mga_draw_tri_rgb_flat_zless
+#define CULL
+#define INTERP_Z
+#define SETUP_CODE                      \
+ if (__operation != OP_DRAWTRAP_ZI) {   \
+    mga_fifo(1);                        \
+    mga_outl(M_DWGCTL, OP_DRAWTRAP_ZI); \
+    __operation = OP_DRAWTRAP_ZI;       \
+ }
+#include "m_ttemp.h"
+
+
+
+/* Desc: RGB iterated triangle
+ *
+ * In  :
+ * Out :
+ *
+ * Note:
+ */
+#define TAG mga_draw_tri_rgb_iter
+#define CULL
+#define INTERP_RGB
+#define SETUP_CODE                     \
+ if (__operation != OP_DRAWTRAP_I) {   \
+    mga_fifo(1);                       \
+    mga_outl(M_DWGCTL, OP_DRAWTRAP_I); \
+    __operation = OP_DRAWTRAP_I;       \
+ }
+#include "m_ttemp.h"
+
+
+
+/* Desc: RGB iterated Z-less triangle
+ *
+ * In  :
+ * Out :
+ *
+ * Note:
+ */
+#define TAG mga_draw_tri_rgb_iter_zless
+#define CULL
+#define INTERP_Z
+#define INTERP_RGB
+#define SETUP_CODE                      \
+ if (__operation != OP_DRAWTRAP_ZI) {   \
+    mga_fifo(1);                        \
+    mga_outl(M_DWGCTL, OP_DRAWTRAP_ZI); \
+    __operation = OP_DRAWTRAP_ZI;       \
+ }
+#include "m_ttemp.h"
+
+
+
+/* Desc: RGB flat rectangle
+ *
+ * In  :
+ * Out :
+ *
+ * Note:
+ */
+void mga_draw_rect_rgb_flat (int left, int top, int width, int height, int color)
+{
+ if (__bpp == 8) {
+    color |= color << 8;
+ }
+ if (__bpp <= 16) {
+    color |= color << 16;
+ }
+
+ mga_select();
+
+ /* set engine state */
+ if (__operation != OP_DRAWRECT) {
+
+    mga_fifo(1);
+    mga_outl(M_DWGCTL, OP_DRAWRECT);
+    __operation = OP_DRAWRECT;
+ }
+
+ /* draw the rectangle */
+ mga_fifo(3);
+ mga_outl(M_FCOL, color);
+ mga_outl(M_FXBNDRY, ((left+width)<<16) | left);
+ mga_outl(M_YDSTLEN | M_EXEC, (top<<16) | height);
+}
+
+
+
+/* Desc: 32RGB textured span
+ *
+ * In  :
+ * Out :
+ *
+ * Note: 0 <= width <= 7*1024
+ */
+void mga_draw_span_rgb_tx32 (int left, int top, int width, const unsigned long *bitmap)
+{
+ int i;
+
+ if (!width) {
+    return;
+ }
+
+ mga_select();
+
+ /* set engine state */
+ if (__operation != OP_DRAWRECT_TX32BGR) {
+    mga_fifo(1);
+    mga_outl(M_DWGCTL, OP_DRAWRECT_TX32BGR);
+    __operation = OP_DRAWRECT_TX32BGR;
+ }
+
+ /* draw the rectangle */
+ mga_fifo(2);
+ mga_outl(M_FXBNDRY, ((left+width)<<16) | left);
+ mga_outl(M_YDSTLEN | M_EXEC, (top<<16) | 1);
+
+ /* copy data to the pseudo-dma window */
+ i = 0;
+ do {
+     mga_outl(i, *bitmap);
+     bitmap++;
+     i += 4;
+ } while (--width);
+}
+
+
+
+/* Desc: 24RGB textured span
+ *
+ * In  :
+ * Out :
+ *
+ * Note: 0 <= width <= 7*1024
+ */
+void mga_draw_span_rgb_tx24 (int left, int top, int width, const unsigned long *bitmap)
+{
+ int i;
+
+ mga_select();
+
+ /* set engine state */
+ if (__operation != OP_DRAWRECT_TX24BGR) {
+    mga_fifo(1);
+    mga_outl(M_DWGCTL, OP_DRAWRECT_TX24BGR);
+    __operation = OP_DRAWRECT_TX24BGR;
+ }
+
+ /* draw the rectangle */
+ mga_fifo(2);
+ mga_outl(M_FXBNDRY, ((left+width)<<16) | left);
+ mga_outl(M_YDSTLEN | M_EXEC, (top<<16) | 1);
+
+ /* copy data to the pseudo-dma window */
+ i = 0;
+ width = (width * 3 + 3) / 4;
+ while (width) {
+       mga_outl(i & (7 * 1024 - 1), *bitmap);
+       bitmap++;
+       i += 4;
+       width--;
+ }
+}
+
+
+
+/* Desc: 32RGB textured rectangle
+ *
+ * In  :
+ * Out :
+ *
+ * Note:
+ */
+void mga_draw_rect_rgb_tx32 (int left, int top, int width, int height, const unsigned long *bitmap)
+{
+ int i;
+
+ mga_select();
+
+ /* set engine state */
+ if (__operation != OP_DRAWRECT_TX32BGR) {
+    mga_fifo(1);
+    mga_outl(M_DWGCTL, OP_DRAWRECT_TX32BGR);
+    __operation = OP_DRAWRECT_TX32BGR;
+ }
+
+ /* draw the rectangle */
+ mga_fifo(2);
+ mga_outl(M_FXBNDRY, ((left+width)<<16) | left);
+ mga_outl(M_YDSTLEN | M_EXEC, (top<<16) | height);
+
+ /* copy data to the pseudo-dma window */
+ i = 0;
+ width *= height;
+ while (width) {
+       mga_outl(i & (7 * 1024 - 1), *bitmap);
+       bitmap++;
+       i += 4;
+       width--;
+ }
+}
+
+
+
+/* Desc: 24RGB textured rectangle
+ *
+ * In  :
+ * Out :
+ *
+ * Note:
+ */
+void mga_draw_rect_rgb_tx24 (int left, int top, int width, int height, const unsigned long *bitmap)
+{
+ int i;
+
+ mga_select();
+
+ /* set engine state */
+ if (__operation != OP_DRAWRECT_TX24BGR) {
+    mga_fifo(1);
+    mga_outl(M_DWGCTL, OP_DRAWRECT_TX24BGR);
+    __operation = OP_DRAWRECT_TX24BGR;
+ }
+
+ /* draw the rectangle */
+ mga_fifo(2);
+ mga_outl(M_FXBNDRY, ((left+width)<<16) | left);
+ mga_outl(M_YDSTLEN | M_EXEC, (top<<16) | height);
+
+ /* copy data to the pseudo-dma window */
+ i = 0;
+ width = (width * height * 3 + 3) / 4;
+ while (width) {
+       mga_outl(i & (7 * 1024 - 1), *bitmap);
+       bitmap++;
+       i += 4;
+       width--;
+ }
+}
+
+
+
+/* Desc: copy 32RGB image to screen
+ *
+ * In  :
+ * Out :
+ *
+ * Note:
+ */
+void mga_iload_32RGB (int left, int top, int width, int height, const unsigned long *bitmap)
+{
+ int i;
+
+ mga_select();
+
+ /* set engine state */
+ if (__operation != OP_ILOAD_32BGR) {
+    mga_fifo(1);
+    mga_outl(M_DWGCTL, OP_ILOAD_32BGR);
+    __operation = OP_ILOAD_32BGR;
+ }
+
+ /* draw the bitmap */
+ mga_fifo(5);
+ mga_outl(M_AR0, width-1);
+ mga_outl(M_AR3, 0);
+ mga_outl(M_AR5, 0);
+ mga_outl(M_FXBNDRY, ((left+width-1)<<16) | left);
+ mga_outl(M_YDSTLEN | M_EXEC, (top<<16) | height);
+
+ /* copy data to the pseudo-dma window */
+ i = 0;
+ width *= height;
+ while (width) {
+       mga_outl(i & (7 * 1024 - 1), *bitmap);
+       bitmap++;
+       i += 4;
+       width--;
+ }
+}
+
+
+
+/* Desc: copy 24RGB image to screen
+ *
+ * In  :
+ * Out :
+ *
+ * Note:
+ */
+void mga_iload_24RGB (int left, int top, int width, int height, const unsigned long *bitmap)
+{
+ int i;
+
+ mga_select();
+
+ /* set engine state */
+ if (__operation != OP_ILOAD_24BGR) {
+    mga_fifo(1);
+    mga_outl(M_DWGCTL, OP_ILOAD_24BGR);
+    __operation = OP_ILOAD_24BGR;
+ }
+
+ /* draw the bitmap */
+ mga_fifo(5);
+ mga_outl(M_AR0, width-1);
+ mga_outl(M_AR3, 0);
+ mga_outl(M_AR5, 0);
+ mga_outl(M_FXBNDRY, ((left+width-1)<<16) | left);
+ mga_outl(M_YDSTLEN | M_EXEC, (top<<16) | height);
+
+ /* copy data to the pseudo-dma window */
+ i = 0;
+ width = (width * height * 3 + 3) / 4;
+ while (width) {
+       mga_outl(i & (7 * 1024 - 1), *bitmap);
+       bitmap++;
+       i += 4;
+       width--;
+ }
+}
+
+
+
+/* Desc: get Z-buffer value
+ *
+ * In  :
+ * Out :
+ *
+ * Note:
+ */
+unsigned short mga_getz (int offset)
+{
+ return hwptr_peekw(mgaptr.linear_map, zorg + (mga_readbuffer_ptr + offset) * 2);
+}
+
+
+
+/* Desc: put Z-buffer value
+ *
+ * In  :
+ * Out :
+ *
+ * Note:
+ */
+void mga_setz (int offset, unsigned short z)
+{
+ hwptr_pokew(mgaptr.linear_map, zorg + (mga_writebuffer_ptr + offset) * 2, z);
+}
+
+
+
+/* Desc: clear Z-buffer
+ *
+ * In  :
+ * Out :
+ *
+ * Note: uses current write buffer
+ */
+static void _mga_clear_zed (int left, int top, int width, int height, unsigned short z)
+{
+ if (__bpp == 16) {
+    /* GPU store (high bandwidth)
+     * Hack alert:
+     * can cause problems with concurrent FB accesses
+     */
+    mga_select();
+    mga_fifo(1);
+    mga_outl(M_YDSTORG, mga_writebuffer_ptr + zorg/2);
+    mga_draw_rect_rgb_flat(left, top, width, height, z);
+    mga_fifo(1);
+    mga_outl(M_YDSTORG, mga_writebuffer_ptr);
+ } else {
+    /* CPU store */
+    unsigned long i, zz = (z<<16) | z;
+    unsigned long ofs = zorg + (top * __pixwidth + left + mga_writebuffer_ptr) * 2;
+    hwptr_select(mgaptr.linear_map);
+    while (height--) {
+          i = width/2;
+          while (i--) {
+                hwptr_nspokel(mgaptr.linear_map, ofs, zz);
+                ofs += 4;
+          }
+          if (width & 1) {
+             hwptr_nspokew(mgaptr.linear_map, ofs, z);
+             ofs += 2;
+          }
+          ofs += (__pixwidth - width) * 2;
+    }
+ }
+}
+
+
+
+/* Desc: clear color- and Z-buffer
+ *
+ * In  : front  = clear front buffer
+ *       back   = clear back buffer
+ *       zed    = clear depth buffer
+ *       left   = leftmost pixel to be cleared
+ *       top    = starting line
+ *       width  = number of pixels
+ *       height = number of lines
+ *       color  = color to clear to
+ *       z      = z value (ignored if zed==0)
+ * Out :
+ *
+ * Note:
+ */
+void mga_clear (int front, int back, int zed, int left, int top, int width, int height, int color, unsigned short z)
+{
+ if (front) {
+    if (mga_writebuffer == MGA_FRONTBUFFER) {
+       mga_draw_rect_rgb_flat(left, top, width, height, color);
+       if (zed) {
+          _mga_clear_zed(left, top, width, height, z);
+       }
+       front = 0;
+    }
+ }
+ if (back) {
+    if (mga_writebuffer == MGA_BACKBUFFER) {
+       mga_draw_rect_rgb_flat(left, top, width, height, color);
+       if (zed) {
+          _mga_clear_zed(left, top, width, height, z);
+       }
+       back = 0;
+    }
+ }
+ if (front) {
+    int old = mga_writebuffer;
+    mga_set_writebuffer(MGA_FRONTBUFFER);
+    mga_draw_rect_rgb_flat(left, top, width, height, color);
+    if (zed) {
+       _mga_clear_zed(left, top, width, height, z);
+    }
+    mga_set_writebuffer(old);
+    front = 0;
+ }
+ if (back) {
+    int old = mga_writebuffer;
+    mga_set_writebuffer(MGA_BACKBUFFER);
+    mga_draw_rect_rgb_flat(left, top, width, height, color);
+    if (zed) {
+       _mga_clear_zed(left, top, width, height, z);
+    }
+    mga_set_writebuffer(old);
+    back = 0;
+ }
+}
+
+
+
+/* Desc: Attempts to enter specified video mode.
+ *
+ * In  : ptr to mode structure, number of pages, Z-buffer request, refresh rate
+ * Out : 0 if success
+ *
+ * Note: also set up the accelerator engine
+ */
+int mga_open (int width, int height, int bpp, int buffers, int zbuffer, int refresh)
+{
+ static int mill_strides[] = { 640, 768, 800, 960, 1024, 1152, 1280, 1600, 1920, 2048, 0 };
+ unsigned int i, used;
+ MGA_MODE *p;
+
+ if (mga_hw_init(&vram, &interleave, card_name) == 0) {
+    return -1;
+ }
+
+ if ((p = mga_mode_find(width, height, bpp)) == NULL) {
+    return -1;
+ }
+
+ __bpp = p->bpp;
+ __width = __pagewidth = p->xres;
+ __height = p->yres;
+
+ if (buffers > 1) {
+    __pagewidth = _mga_fix_scans(__pagewidth);
+    __pixwidth = __pagewidth * buffers;
+ } else {
+    __pixwidth = __pagewidth;
+    __pixwidth = _mga_fix_scans(__pixwidth);
+ }
+
+ for (i=0; mill_strides[i]; i++) {
+     if (__pixwidth <= mill_strides[i]) {
+        __pixwidth = mill_strides[i];
+        break;
+     }
+ }
+
+ __bypp = (__bpp+7)/8;
+ __bytwidth = __pixwidth * __bypp;
+
+ /* compute used memory: framebuffer + zbuffer */
+ used = __bytwidth * __height;
+ if (zbuffer) {
+    zorg = (used + 511) & ~511;
+    /* Hack alert:
+     * a 16-bit Z-buffer size is (stride_in_pixels * number_of_lines * 2)
+     * We cannot mess with the Z-buffer width, but we might decrease the
+     * number of lines, if the user requests less than (screen_height). For
+     * example with a 2MB card, one can have 640x480x16 display with 2 color
+     * buffers and Z-buffer if the maximum requested height is 339:
+     *    Total = (640*480 * 2 + 640*339 * 2) * 2
+     * However, this means the user must not write beyond the window's height
+     * and if we'll ever implement moveable windows, we'll have to reconsider
+     * this hack.
+     */
+#if 1
+    __zheight = height;  /* smaller */
+    used = zorg + __pixwidth * 2 * __zheight;
+#else
+    __zheight = __height;
+    used = zorg + __pixwidth * 2 * __zheight;
+#endif
+ }
+
+ if (mill_strides[i] && (vram>=used)) {
+    /* enter mode */
+    mga_mode_switch(p, refresh);
+    /* change the scan line length */
+    _mga_ralter(M_CRTC_INDEX, 0x14, 0x40, 0);           /* disable DWORD */
+    _mga_ralter(M_CRTC_INDEX, 0x17, 0x40, 0x40);        /* wbmode = BYTE */
+    if (interleave) {
+       _mga_rwrite(M_CRTC_INDEX, 0x13, __bytwidth/16);
+       _mga_ralter(M_CRTC_EXT_INDEX, 0, 0x30, ((__bytwidth/16)>>4)&0x30);
+    } else {
+       _mga_rwrite(M_CRTC_INDEX, 0x13, __bytwidth/8);
+       _mga_ralter(M_CRTC_EXT_INDEX, 0, 0x30, ((__bytwidth/8)>>4)&0x30);
+    }
+ } else {
+    return -1;
+ }
+
+ /* setup buffers */
+ mga_frontbuffer_ptr = 0;
+ if (buffers > 1) {
+    mga_backbuffer_ptr = __pagewidth;
+    mga_set_readbuffer(MGA_BACKBUFFER);
+    mga_set_writebuffer(MGA_BACKBUFFER);
+ } else {
+    mga_backbuffer_ptr = 0;
+    mga_set_readbuffer(MGA_FRONTBUFFER);
+    mga_set_writebuffer(MGA_FRONTBUFFER);
+ }
+ mga_display_start(mga_frontbuffer_ptr, __scrollx = 0, __scrolly = 0, 1);
+
+ /* set up the accelerator engine */
+ mga_select();
+
+ mga_fifo(8);
+ mga_outl(M_PITCH, __pixwidth);
+ mga_outl(M_PLNWT, 0xFFFFFFFF);
+ mga_outl(M_OPMODE, M_DMA_BLIT);
+ mga_outl(M_CXBNDRY, 0xFFFF0000);
+ mga_outl(M_YTOP, 0x00000000);
+ mga_outl(M_YBOT, 0x007FFFFF);
+ mga_outl(M_ZORG, zorg);
+
+#define INITPTR(bpp) \
+        mga_putpixel = _mga_putpixel##bpp; \
+        mga_getrgba = _mga_getrgba##bpp;   \
+        mga_getpixel = _mga_getpixel##bpp; \
+        mga_mixrgb = _mga_mixrgb##bpp;     \
+        mga_mixrgb_full = _mga_mixrgb##bpp##_full
+
+ switch (__bpp) {
+	case 8:
+	     mga_outl(M_MACCESS, 0);
+             INITPTR(8);
+	     break;
+	case 15:
+	     mga_outl(M_MACCESS, 0x80000001);
+             INITPTR(15);
+	     break;
+	case 16:
+	     mga_outl(M_MACCESS, 1);
+             INITPTR(16);
+	     break;
+	case 32:
+	     mga_outl(M_MACCESS, 2);
+             INITPTR(32);
+	     break;
+ }
+
+#undef INITPTR
+
+ /* disable VGA aperture */
+ i = mga_inb(M_MISC_R);
+ mga_outb(M_MISC_W, i & ~2);
+
+ /* clear Z-buffer (if any) */
+ if (zbuffer) {
+    unsigned long ofs = zorg;
+    unsigned long len = zorg + __pixwidth * 2 * __zheight;
+
+    hwptr_select(mgaptr.linear_map);
+    for (; ofs<len; ofs+=4) {
+        hwptr_nspokel(mgaptr.linear_map, ofs, -1);
+    }
+ }
+
+ return 0;
+}
+
+
+
+/* Desc:
+ *
+ * In  :
+ * Out :
+ *
+ * Note:
+ */
+void mga_close (int restore, int unmap)
+{
+ if (restore) {
+    mga_mode_restore();
+ }
+ if (unmap) {
+    mga_hw_fini();
+ }
+}
+
+
+
+/* Desc: state retrieval
+ *
+ * In  : parameter name, ptr to storage
+ * Out : 0 if request successfully processed
+ *
+ * Note: -
+ */
+int mga_get (int pname, int *params)
+{
+ switch (pname) {
+        case MGA_GET_CARD_NAME:
+             strcat(strcpy((char *)params, "Matrox "), card_name);
+             break;
+        case MGA_GET_VRAM:
+             params[0] = vram;
+             break;
+        case MGA_GET_CI_PREC:
+             params[0] = 0;
+             break;
+        case MGA_GET_HPIXELS:
+             params[0] = __pixwidth;
+             break;
+        case MGA_GET_SCREEN_SIZE:
+             params[0] = __width;
+             params[1] = __height;
+             break;
+        default:
+             return -1;
+ }
+ return 0;
+}
diff --git a/src/mesa/drivers/dos/mga/mga.h b/src/mesa/drivers/dos/mga/mga.h
index d84fe72e26..0c074fa978 100644
--- a/src/mesa/drivers/dos/mga/mga.h
+++ b/src/mesa/drivers/dos/mga/mga.h
@@ -1,91 +1,91 @@
-/*

- * Mesa 3-D graphics library

- * Version:  5.0

- * 

- * Copyright (C) 1999-2002  Brian Paul   All Rights Reserved.

- * 

- * Permission is hereby granted, free of charge, to any person obtaining a

- * copy of this software and associated documentation files (the "Software"),

- * to deal in the Software without restriction, including without limitation

- * the rights to use, copy, modify, merge, publish, distribute, sublicense,

- * and/or sell copies of the Software, and to permit persons to whom the

- * Software is furnished to do so, subject to the following conditions:

- * 

- * The above copyright notice and this permission notice shall be included

- * in all copies or substantial portions of the Software.

- * 

- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS

- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL

- * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN

- * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN

- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

- */

-

-/*

- * DOS/DJGPP device driver v1.3 for Mesa  --  MGA2064W

- *

- *  Copyright (c) 2003 - Borca Daniel

- *  Email : dborca@yahoo.com

- *  Web   : http://www.geocities.com/dborca

- */

-

-

-#ifndef MGA_H_included

-#define MGA_H_included

-

-#define MGA_GET_CARD_NAME   0x0100

-#define MGA_GET_VRAM        0x0101

-#define MGA_GET_CI_PREC     0x0200

-#define MGA_GET_HPIXELS     0x0201

-#define MGA_GET_SCREEN_SIZE 0x0202

-

-int mga_open (int width, int height, int bpp, int buffers, int zbuffer, int refresh);

-void mga_clear (int front, int back, int zed, int left, int top, int width, int height, int color, unsigned short z);

-int mga_get (int pname, int *params);

-void mga_close (int restore, int unmap);

-

-extern void (*mga_putpixel) (unsigned int offset, int color);

-extern int (*mga_getpixel) (unsigned int offset);

-extern void (*mga_getrgba) (unsigned int offset, unsigned char rgba[4]);

-extern int (*mga_mixrgb) (const unsigned char rgb[]);

-

-#define MGA_BACKBUFFER !0

-#define MGA_FRONTBUFFER 0

-void mga_set_readbuffer (int buffer);

-void mga_set_writebuffer (int buffer);

-void mga_swapbuffers (int swapinterval);

-

-unsigned short mga_getz (int offset);

-void mga_setz (int offset, unsigned short z);

-

-void mga_wait_idle (void);

-

-/*

- * vertex structure, used for primitive rendering

- */

-typedef struct {

-        int win[4];             /* X, Y, Z, ? */

-        unsigned char color[4]; /* R, G, B, A */

-} MGAvertex;

-

-void mga_draw_line_rgb_flat (const MGAvertex *v1, const MGAvertex *v2);

-void mga_draw_line_rgb_flat_zless (const MGAvertex *v1, const MGAvertex *v2);

-void mga_draw_line_rgb_iter (const MGAvertex *v1, const MGAvertex *v2);

-void mga_draw_line_rgb_iter_zless (const MGAvertex *v1, const MGAvertex *v2);

-

-void mga_draw_tri_rgb_flat (int cull, const MGAvertex *v1, const MGAvertex *v2, const MGAvertex *v3);

-void mga_draw_tri_rgb_flat_zless (int cull, const MGAvertex *v1, const MGAvertex *v2, const MGAvertex *v3);

-void mga_draw_tri_rgb_iter (int cull, const MGAvertex *v1, const MGAvertex *v2, const MGAvertex *v3);

-void mga_draw_tri_rgb_iter_zless (int cull, const MGAvertex *v1, const MGAvertex *v2, const MGAvertex *v3);

-

-void mga_draw_rect_rgb_flat (int left, int top, int width, int height, int color);

-void mga_draw_rect_rgb_tx32 (int left, int top, int width, int height, const unsigned long *bitmap);

-void mga_draw_rect_rgb_tx24 (int left, int top, int width, int height, const unsigned long *bitmap);

-void mga_draw_span_rgb_tx32 (int left, int top, int width, const unsigned long *bitmap);

-void mga_draw_span_rgb_tx24 (int left, int top, int width, const unsigned long *bitmap);

-

-void mga_iload_32RGB (int left, int top, int width, int height, const unsigned long *bitmap);

-void mga_iload_24RGB (int left, int top, int width, int height, const unsigned long *bitmap);

-

-#endif

+/*
+ * Mesa 3-D graphics library
+ * Version:  5.0
+ * 
+ * Copyright (C) 1999-2002  Brian Paul   All Rights Reserved.
+ * 
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ * 
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/*
+ * DOS/DJGPP device driver v1.3 for Mesa  --  MGA2064W
+ *
+ *  Copyright (c) 2003 - Borca Daniel
+ *  Email : dborca@yahoo.com
+ *  Web   : http://www.geocities.com/dborca
+ */
+
+
+#ifndef MGA_H_included
+#define MGA_H_included
+
+#define MGA_GET_CARD_NAME   0x0100
+#define MGA_GET_VRAM        0x0101
+#define MGA_GET_CI_PREC     0x0200
+#define MGA_GET_HPIXELS     0x0201
+#define MGA_GET_SCREEN_SIZE 0x0202
+
+int mga_open (int width, int height, int bpp, int buffers, int zbuffer, int refresh);
+void mga_clear (int front, int back, int zed, int left, int top, int width, int height, int color, unsigned short z);
+int mga_get (int pname, int *params);
+void mga_close (int restore, int unmap);
+
+extern void (*mga_putpixel) (unsigned int offset, int color);
+extern int (*mga_getpixel) (unsigned int offset);
+extern void (*mga_getrgba) (unsigned int offset, unsigned char rgba[4]);
+extern int (*mga_mixrgb) (const unsigned char rgb[]);
+
+#define MGA_BACKBUFFER !0
+#define MGA_FRONTBUFFER 0
+void mga_set_readbuffer (int buffer);
+void mga_set_writebuffer (int buffer);
+void mga_swapbuffers (int swapinterval);
+
+unsigned short mga_getz (int offset);
+void mga_setz (int offset, unsigned short z);
+
+void mga_wait_idle (void);
+
+/*
+ * vertex structure, used for primitive rendering
+ */
+typedef struct {
+        int win[4];             /* X, Y, Z, ? */
+        unsigned char color[4]; /* R, G, B, A */
+} MGAvertex;
+
+void mga_draw_line_rgb_flat (const MGAvertex *v1, const MGAvertex *v2);
+void mga_draw_line_rgb_flat_zless (const MGAvertex *v1, const MGAvertex *v2);
+void mga_draw_line_rgb_iter (const MGAvertex *v1, const MGAvertex *v2);
+void mga_draw_line_rgb_iter_zless (const MGAvertex *v1, const MGAvertex *v2);
+
+void mga_draw_tri_rgb_flat (int cull, const MGAvertex *v1, const MGAvertex *v2, const MGAvertex *v3);
+void mga_draw_tri_rgb_flat_zless (int cull, const MGAvertex *v1, const MGAvertex *v2, const MGAvertex *v3);
+void mga_draw_tri_rgb_iter (int cull, const MGAvertex *v1, const MGAvertex *v2, const MGAvertex *v3);
+void mga_draw_tri_rgb_iter_zless (int cull, const MGAvertex *v1, const MGAvertex *v2, const MGAvertex *v3);
+
+void mga_draw_rect_rgb_flat (int left, int top, int width, int height, int color);
+void mga_draw_rect_rgb_tx32 (int left, int top, int width, int height, const unsigned long *bitmap);
+void mga_draw_rect_rgb_tx24 (int left, int top, int width, int height, const unsigned long *bitmap);
+void mga_draw_span_rgb_tx32 (int left, int top, int width, const unsigned long *bitmap);
+void mga_draw_span_rgb_tx24 (int left, int top, int width, const unsigned long *bitmap);
+
+void mga_iload_32RGB (int left, int top, int width, int height, const unsigned long *bitmap);
+void mga_iload_24RGB (int left, int top, int width, int height, const unsigned long *bitmap);
+
+#endif
diff --git a/src/mesa/drivers/dos/mga/mga_hw.c b/src/mesa/drivers/dos/mga/mga_hw.c
index 08c1d7e54a..b2e7d5cc92 100644
--- a/src/mesa/drivers/dos/mga/mga_hw.c
+++ b/src/mesa/drivers/dos/mga/mga_hw.c
@@ -1,416 +1,416 @@
-/*

- * Mesa 3-D graphics library

- * Version:  5.0

- * 

- * Copyright (C) 1999-2002  Brian Paul   All Rights Reserved.

- * 

- * Permission is hereby granted, free of charge, to any person obtaining a

- * copy of this software and associated documentation files (the "Software"),

- * to deal in the Software without restriction, including without limitation

- * the rights to use, copy, modify, merge, publish, distribute, sublicense,

- * and/or sell copies of the Software, and to permit persons to whom the

- * Software is furnished to do so, subject to the following conditions:

- * 

- * The above copyright notice and this permission notice shall be included

- * in all copies or substantial portions of the Software.

- * 

- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS

- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL

- * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN

- * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN

- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

- */

-

-/*

- * DOS/DJGPP device driver v1.3 for Mesa  --  MGA2064W HW mapping

- *

- *  Copyright (c) 2003 - Borca Daniel

- *  Email : dborca@yahoo.com

- *  Web   : http://www.geocities.com/dborca

- */

-

-

-#include <crt0.h>

-#include <dpmi.h>

-#include <pc.h>

-#include <string.h>

-#include <sys/nearptr.h>

-#include <sys/segments.h>

-

-#include "../internal.h"

-#include "mga_reg.h"

-#include "mga_hw.h"

-

-

-

-/* Hack alert:

- * these should really be externs

- */

-/* PCI access routines */

-static int pci_find_device (int deviceID, int vendorID, int deviceIndex, int *handle);

-static unsigned long pci_read_long (int handle, int index);

-static void pci_write_long (int handle, int index, unsigned long value);

-

-

-

-/* PCI device identifiers */

-#define MATROX_VENDOR_ID 0x102B

-

-typedef enum {

-        MATROX_MILL_ID = 0x0519

-} MATROX_ID;

-

-static MATROX_ID matrox_id_list[] = {

-       MATROX_MILL_ID,

-       0

-};

-

-

-

-/* internal hardware data structures */

-#if !MGA_FARPTR

-static int dirty;

-#endif

-static int bus_id;

-static unsigned long reg40;

-static unsigned long io_mem_base[4], linear_base;

-static unsigned long io_mem_size[4], linear_size;

-static MATROX_ID matrox_id;

-

-

-

-/* interface structures containing hardware pointer data */

-MGA_HWPTR mgaptr;

-

-

-

-/* Desc: create MMAP

- *

- * In  :

- * Out :

- *

- * Note:

- */

-static int _create_mmap (__dpmi_paddr *m, unsigned long base, unsigned long size)

-{

-#if MGA_FARPTR

- int sel;

- if (_create_selector(&sel, base, size)) {

-    return -1;

- }

- m->selector = sel;

- m->offset32 = 0;

-#else

- m->selector = _my_ds();

- if (_create_linear_mapping(&m->offset32, base, size)) {

-    return -1;

- }

- m->offset32 -= __djgpp_base_address;

-#endif

- return 0;

-}

-

-

-

-/* Desc: destroy MMAP

- *

- * In  :

- * Out :

- *

- * Note:

- */

-static void _destroy_mmap (__dpmi_paddr *m)

-{

-#if MGA_FARPTR

- int sel = m->selector;

- _remove_selector(&sel);

-#else

- m->offset32 += __djgpp_base_address;

- _remove_linear_mapping(&m->offset32);

-#endif

- m->selector = 0;

- m->offset32 = 0;

-}

-

-

-

-/* Desc: Counts amount of installed RAM

- *

- * In  :

- * Out :

- *

- * Note:

- */

-static int _mga_get_vram (MATROX_ID chip, unsigned long base)

-{

- int ProbeSize = 8;

- int SizeFound = 2;

- unsigned char tmp;

- int i;

- __dpmi_paddr fb;

-

- switch (chip) {

-	case MATROX_MILL_ID:

-	     ProbeSize = 8;

-	     break;

- }

-

- if (_create_mmap(&fb, base, ProbeSize*1024*1024)) {

-    return 0;

- }

-

- /* turn MGA mode on - enable linear frame buffer (CRTCEXT3) */

- mga_select();

- mga_outb(M_CRTC_EXT_INDEX, 3);

- tmp = mga_inb(M_CRTC_EXT_DATA);

- mga_outb(M_CRTC_EXT_DATA, tmp | M_MGAMODE);

-

- /* write, read and compare method */

- for (i=ProbeSize; i>2; i-= 2) {

-     hwptr_pokeb(fb, i*1024*1024 - 1, 0xAA);

-     mga_select();

-     mga_outb(M_CRTC_INDEX, 0); /* flush the cache */

-     mga_inl(M_STATUS); /* delay */

-     mga_inl(M_STATUS); /* delay */

-     mga_inl(M_STATUS); /* delay */

-     if (hwptr_peekb(fb, i*1024*1024 - 1) == 0xAA) {

-	SizeFound = i;

-	break;

-     }

- }

-

- /* restore CRTCEXT3 state */

- mga_select();

- mga_outb(M_CRTC_EXT_INDEX, 3);

- mga_outb(M_CRTC_EXT_DATA, tmp);

-

- _destroy_mmap(&fb);

-

- return SizeFound*1024*1024;

-}

-

-

-

-/* Desc: Frees all resources allocated by MGA init code.

- *

- * In  :

- * Out :

- *

- * Note:

- */

-void mga_hw_fini (void)

-{

- int i;

-

- pci_write_long(bus_id, 0x40, reg40);

-

- for (i=0; i<4; i++) {

-     _destroy_mmap(&mgaptr.io_mem_map[i]);

- }

-

- _destroy_mmap(&mgaptr.linear_map);

-

-#if !MGA_FARPTR

- if (dirty) {

-    __djgpp_nearptr_disable();

-    dirty = FALSE;

- }

-#endif

-

- matrox_id = 0;

-}

-

-

-

-/* Desc: Attempts to detect MGA.

- *

- * In  :

- * Out :

- *

- * Note: The first thing ever to be called. This is in charge of filling in

- *       the driver header with all the required information and function

- *       pointers. We do not yet have access to the video memory, so we can't

- *       talk directly to the card.

- */

-int mga_hw_init (unsigned long *vram, int *interleave, char *name)

-{

- int i;

- unsigned long pci_base[2];

-

- if (matrox_id) {

-    return matrox_id;

- }

-

-#if !MGA_FARPTR

- /* enable nearptr access */

- if (_crt0_startup_flags & _CRT0_FLAG_NEARPTR) {

-    dirty = FALSE;

- } else {

-    if (__djgpp_nearptr_enable() == 0)

-       return NULL;

-

-    dirty = TRUE;

- }

-#endif

-

- /* find PCI device */

- matrox_id = 0;

-

- for (bus_id=0, i=0; matrox_id_list[i]; i++) {

-     if (pci_find_device(matrox_id_list[i], MATROX_VENDOR_ID, 0, &bus_id)) {

-	matrox_id = matrox_id_list[i];

-	break;

-     }

- }

-

- /* set up the card name */

- switch (matrox_id) {

-	case MATROX_MILL_ID:

-	     if (name) strcpy(name, "Millennium");

-	     break;

-        default:

-             matrox_id = 0;

-             return -1;

- }

-

- reg40 = pci_read_long(bus_id, 0x40);

-#if 0 /* overclock a little :) */

- {

-  int rfhcnt = (reg40 >> 16) & 0xF;

-  if ((reg40 & 0x200000) && (rfhcnt < 0xC)) {

-     pci_write_long(bus_id, 0x40, (reg40 & 0xFFF0FFFF) | 0x000C0000);

-  }

- }

-#endif

-

- /* read hardware configuration data */

- for (i=0; i<2; i++)

-     pci_base[i] = pci_read_long(bus_id, 16+i*4);

-

- /* work out the linear framebuffer and MMIO addresses */

- if (matrox_id == MATROX_MILL_ID) {

-    if (pci_base[0])

-       io_mem_base[0] = pci_base[0] & 0xFFFFC000;

-

-    if (pci_base[1])

-       linear_base = pci_base[1] & 0xFF800000;

- }

-

- if (!linear_base || !io_mem_base[0])

-    return NULL;

-

- /* deal with the memory mapping crap */

- io_mem_size[0] = 0x4000;

-

- for (i=0; i<4; i++) {

-     if (io_mem_base[i]) {

-        if (_create_mmap(&mgaptr.io_mem_map[i], io_mem_base[i], io_mem_size[i])) {

-	   mga_hw_fini();

-	   return NULL;

-	}

-     }

- }

-

- *vram = linear_size = _mga_get_vram(matrox_id, linear_base);

-

- if (_create_mmap(&mgaptr.linear_map, linear_base, linear_size)) {

-    mga_hw_fini();

-    return NULL;

- }

-

- /* fill in user data */

- *interleave = linear_size > 2*1024*1024;

-

- return matrox_id;

-}

-

-

-

-/* PCI routines added by SET */

-#define PCIAddr   0xCF8

-#define PCIData   0xCFC

-#define PCIEnable 0x80000000

-

-

-

-/* FindPCIDevice:

- *  Replacement for the INT 1A - PCI BIOS v2.0c+ - FIND PCI DEVICE, AX = B102h

- *

- *  Note: deviceIndex is because a card can hold more than one PCI chip.

- * 

- *  Searches the board of the vendor supplied in vendorID with 

- *  identification number deviceID and index deviceIndex (normally 0). 

- *  The value returned in handle can be used to access the PCI registers 

- *  of this board.

- *

- *  Return: 1 if found 0 if not found.

- */

-static int pci_find_device (int deviceID, int vendorID, int deviceIndex, int *handle)

-{

- int model, vendor, card, device;

- unsigned value, full_id, bus, busMax;

-

- deviceIndex <<= 8;

-

- /* for each PCI bus */

- for (bus=0, busMax=0x10000; bus<busMax; bus+=0x10000) {

-

-     /* for each hardware device */

-     for (device=0, card=0; card<32; card++, device+=0x800) {

-	 value = PCIEnable | bus | deviceIndex | device;

-	 outportl(PCIAddr, value);

-	 full_id = inportl(PCIData);

-

-	 /* get the vendor and model ID */

-	 vendor = full_id & 0xFFFF;

-	 model = full_id >> 16;

-

-	 if (vendor != 0xFFFF) {

-	    /* is this the one we want? */

-	    if ((deviceID == model) && (vendorID == vendor)) {

-	       *handle = value;

-	       return 1;

-	    }

-

-	    /* is it a bridge to a secondary bus? */

-	    outportl(PCIAddr, value | 8);

-

-	    if (((inportl(PCIData) >> 16) == 0x0600) || (full_id==0x00011011))

-	       busMax += 0x10000;

-         }

-     }

- }

-

- return 0;

-}

-

-

-

-/* Desc:

- *

- * In  :

- * Out :

- *

- * Note:

- */

-static unsigned long pci_read_long (int handle, int index)

-{

- outportl(PCIAddr, PCIEnable | handle | index);

- return inportl(PCIData);

-}

-

-

-

-/* Desc:

- *

- * In  :

- * Out :

- *

- * Note:

- */

-static void pci_write_long (int handle, int index, unsigned long value)

-{

- outportl(PCIAddr, PCIEnable | handle | index);

- outportl(PCIData, value);

-}

+/*
+ * Mesa 3-D graphics library
+ * Version:  5.0
+ * 
+ * Copyright (C) 1999-2002  Brian Paul   All Rights Reserved.
+ * 
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ * 
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/*
+ * DOS/DJGPP device driver v1.4 for Mesa  --  MGA2064W HW mapping
+ *
+ *  Copyright (c) 2003 - Borca Daniel
+ *  Email : dborca@yahoo.com
+ *  Web   : http://www.geocities.com/dborca
+ */
+
+
+#include <crt0.h>
+#include <dpmi.h>
+#include <pc.h>
+#include <string.h>
+#include <sys/nearptr.h>
+#include <sys/segments.h>
+
+#include "../internal.h"
+#include "mga_reg.h"
+#include "mga_hw.h"
+
+
+
+/* Hack alert:
+ * these should really be externs
+ */
+/* PCI access routines */
+static int pci_find_device (int deviceID, int vendorID, int deviceIndex, int *handle);
+static unsigned long pci_read_long (int handle, int index);
+static void pci_write_long (int handle, int index, unsigned long value);
+
+
+
+/* PCI device identifiers */
+#define MATROX_VENDOR_ID 0x102B
+
+typedef enum {
+        MATROX_MILL_ID = 0x0519
+} MATROX_ID;
+
+static MATROX_ID matrox_id_list[] = {
+       MATROX_MILL_ID,
+       0
+};
+
+
+
+/* internal hardware data structures */
+#if !MGA_FARPTR
+static int dirty;
+#endif
+static int bus_id;
+static unsigned long reg40;
+static unsigned long io_mem_base[4], linear_base;
+static unsigned long io_mem_size[4], linear_size;
+static MATROX_ID matrox_id;
+
+
+
+/* interface structures containing hardware pointer data */
+MGA_HWPTR mgaptr;
+
+
+
+/* Desc: create MMAP
+ *
+ * In  :
+ * Out :
+ *
+ * Note:
+ */
+static int _create_mmap (__dpmi_paddr *m, unsigned long base, unsigned long size)
+{
+#if MGA_FARPTR
+ int sel;
+ if (_create_selector(&sel, base, size)) {
+    return -1;
+ }
+ m->selector = sel;
+ m->offset32 = 0;
+#else
+ m->selector = _my_ds();
+ if (_create_linear_mapping(&m->offset32, base, size)) {
+    return -1;
+ }
+ m->offset32 -= __djgpp_base_address;
+#endif
+ return 0;
+}
+
+
+
+/* Desc: destroy MMAP
+ *
+ * In  :
+ * Out :
+ *
+ * Note:
+ */
+static void _destroy_mmap (__dpmi_paddr *m)
+{
+#if MGA_FARPTR
+ int sel = m->selector;
+ _remove_selector(&sel);
+#else
+ m->offset32 += __djgpp_base_address;
+ _remove_linear_mapping(&m->offset32);
+#endif
+ m->selector = 0;
+ m->offset32 = 0;
+}
+
+
+
+/* Desc: Counts amount of installed RAM
+ *
+ * In  :
+ * Out :
+ *
+ * Note:
+ */
+static int _mga_get_vram (MATROX_ID chip, unsigned long base)
+{
+ int ProbeSize = 8;
+ int SizeFound = 2;
+ unsigned char tmp;
+ int i;
+ __dpmi_paddr fb;
+
+ switch (chip) {
+	case MATROX_MILL_ID:
+	     ProbeSize = 8;
+	     break;
+ }
+
+ if (_create_mmap(&fb, base, ProbeSize*1024*1024)) {
+    return 0;
+ }
+
+ /* turn MGA mode on - enable linear frame buffer (CRTCEXT3) */
+ mga_select();
+ mga_outb(M_CRTC_EXT_INDEX, 3);
+ tmp = mga_inb(M_CRTC_EXT_DATA);
+ mga_outb(M_CRTC_EXT_DATA, tmp | M_MGAMODE);
+
+ /* write, read and compare method */
+ for (i=ProbeSize; i>2; i-= 2) {
+     hwptr_pokeb(fb, i*1024*1024 - 1, 0xAA);
+     mga_select();
+     mga_outb(M_CRTC_INDEX, 0); /* flush the cache */
+     mga_inl(M_STATUS); /* delay */
+     mga_inl(M_STATUS); /* delay */
+     mga_inl(M_STATUS); /* delay */
+     if (hwptr_peekb(fb, i*1024*1024 - 1) == 0xAA) {
+	SizeFound = i;
+	break;
+     }
+ }
+
+ /* restore CRTCEXT3 state */
+ mga_select();
+ mga_outb(M_CRTC_EXT_INDEX, 3);
+ mga_outb(M_CRTC_EXT_DATA, tmp);
+
+ _destroy_mmap(&fb);
+
+ return SizeFound*1024*1024;
+}
+
+
+
+/* Desc: Frees all resources allocated by MGA init code.
+ *
+ * In  :
+ * Out :
+ *
+ * Note:
+ */
+void mga_hw_fini (void)
+{
+ int i;
+
+ pci_write_long(bus_id, 0x40, reg40);
+
+ for (i=0; i<4; i++) {
+     _destroy_mmap(&mgaptr.io_mem_map[i]);
+ }
+
+ _destroy_mmap(&mgaptr.linear_map);
+
+#if !MGA_FARPTR
+ if (dirty) {
+    __djgpp_nearptr_disable();
+    dirty = FALSE;
+ }
+#endif
+
+ matrox_id = 0;
+}
+
+
+
+/* Desc: Attempts to detect MGA.
+ *
+ * In  :
+ * Out :
+ *
+ * Note: The first thing ever to be called. This is in charge of filling in
+ *       the driver header with all the required information and function
+ *       pointers. We do not yet have access to the video memory, so we can't
+ *       talk directly to the card.
+ */
+int mga_hw_init (unsigned long *vram, int *interleave, char *name)
+{
+ int i;
+ unsigned long pci_base[2];
+
+ if (matrox_id) {
+    return matrox_id;
+ }
+
+#if !MGA_FARPTR
+ /* enable nearptr access */
+ if (_crt0_startup_flags & _CRT0_FLAG_NEARPTR) {
+    dirty = FALSE;
+ } else {
+    if (__djgpp_nearptr_enable() == 0)
+       return 0;
+
+    dirty = TRUE;
+ }
+#endif
+
+ /* find PCI device */
+ matrox_id = 0;
+
+ for (bus_id=0, i=0; matrox_id_list[i]; i++) {
+     if (pci_find_device(matrox_id_list[i], MATROX_VENDOR_ID, 0, &bus_id)) {
+	matrox_id = matrox_id_list[i];
+	break;
+     }
+ }
+
+ /* set up the card name */
+ switch (matrox_id) {
+	case MATROX_MILL_ID:
+	     if (name) strcpy(name, "Millennium");
+	     break;
+        default:
+             matrox_id = 0;
+             return -1;
+ }
+
+ reg40 = pci_read_long(bus_id, 0x40);
+#if 0 /* overclock a little :) */
+ {
+  int rfhcnt = (reg40 >> 16) & 0xF;
+  if ((reg40 & 0x200000) && (rfhcnt < 0xC)) {
+     pci_write_long(bus_id, 0x40, (reg40 & 0xFFF0FFFF) | 0x000C0000);
+  }
+ }
+#endif
+
+ /* read hardware configuration data */
+ for (i=0; i<2; i++)
+     pci_base[i] = pci_read_long(bus_id, 16+i*4);
+
+ /* work out the linear framebuffer and MMIO addresses */
+ if (matrox_id == MATROX_MILL_ID) {
+    if (pci_base[0])
+       io_mem_base[0] = pci_base[0] & 0xFFFFC000;
+
+    if (pci_base[1])
+       linear_base = pci_base[1] & 0xFF800000;
+ }
+
+ if (!linear_base || !io_mem_base[0])
+    return 0;
+
+ /* deal with the memory mapping crap */
+ io_mem_size[0] = 0x4000;
+
+ for (i=0; i<4; i++) {
+     if (io_mem_base[i]) {
+        if (_create_mmap(&mgaptr.io_mem_map[i], io_mem_base[i], io_mem_size[i])) {
+	   mga_hw_fini();
+	   return 0;
+	}
+     }
+ }
+
+ *vram = linear_size = _mga_get_vram(matrox_id, linear_base);
+
+ if (_create_mmap(&mgaptr.linear_map, linear_base, linear_size)) {
+    mga_hw_fini();
+    return 0;
+ }
+
+ /* fill in user data */
+ *interleave = linear_size > 2*1024*1024;
+
+ return matrox_id;
+}
+
+
+
+/* PCI routines added by SET */
+#define PCIAddr   0xCF8
+#define PCIData   0xCFC
+#define PCIEnable 0x80000000
+
+
+
+/* FindPCIDevice:
+ *  Replacement for the INT 1A - PCI BIOS v2.0c+ - FIND PCI DEVICE, AX = B102h
+ *
+ *  Note: deviceIndex is because a card can hold more than one PCI chip.
+ * 
+ *  Searches the board of the vendor supplied in vendorID with 
+ *  identification number deviceID and index deviceIndex (normally 0). 
+ *  The value returned in handle can be used to access the PCI registers 
+ *  of this board.
+ *
+ *  Return: 1 if found 0 if not found.
+ */
+static int pci_find_device (int deviceID, int vendorID, int deviceIndex, int *handle)
+{
+ int model, vendor, card, device;
+ unsigned value, full_id, bus, busMax;
+
+ deviceIndex <<= 8;
+
+ /* for each PCI bus */
+ for (bus=0, busMax=0x10000; bus<busMax; bus+=0x10000) {
+
+     /* for each hardware device */
+     for (device=0, card=0; card<32; card++, device+=0x800) {
+	 value = PCIEnable | bus | deviceIndex | device;
+	 outportl(PCIAddr, value);
+	 full_id = inportl(PCIData);
+
+	 /* get the vendor and model ID */
+	 vendor = full_id & 0xFFFF;
+	 model = full_id >> 16;
+
+	 if (vendor != 0xFFFF) {
+	    /* is this the one we want? */
+	    if ((deviceID == model) && (vendorID == vendor)) {
+	       *handle = value;
+	       return 1;
+	    }
+
+	    /* is it a bridge to a secondary bus? */
+	    outportl(PCIAddr, value | 8);
+
+	    if (((inportl(PCIData) >> 16) == 0x0600) || (full_id==0x00011011))
+	       busMax += 0x10000;
+         }
+     }
+ }
+
+ return 0;
+}
+
+
+
+/* Desc:
+ *
+ * In  :
+ * Out :
+ *
+ * Note:
+ */
+static unsigned long pci_read_long (int handle, int index)
+{
+ outportl(PCIAddr, PCIEnable | handle | index);
+ return inportl(PCIData);
+}
+
+
+
+/* Desc:
+ *
+ * In  :
+ * Out :
+ *
+ * Note:
+ */
+static void pci_write_long (int handle, int index, unsigned long value)
+{
+ outportl(PCIAddr, PCIEnable | handle | index);
+ outportl(PCIData, value);
+}
diff --git a/src/mesa/drivers/dos/mga/mga_hw.h b/src/mesa/drivers/dos/mga/mga_hw.h
index c6575b97f8..8cc266b49e 100644
--- a/src/mesa/drivers/dos/mga/mga_hw.h
+++ b/src/mesa/drivers/dos/mga/mga_hw.h
@@ -1,113 +1,113 @@
-/*

- * Mesa 3-D graphics library

- * Version:  5.0

- * 

- * Copyright (C) 1999-2002  Brian Paul   All Rights Reserved.

- * 

- * Permission is hereby granted, free of charge, to any person obtaining a

- * copy of this software and associated documentation files (the "Software"),

- * to deal in the Software without restriction, including without limitation

- * the rights to use, copy, modify, merge, publish, distribute, sublicense,

- * and/or sell copies of the Software, and to permit persons to whom the

- * Software is furnished to do so, subject to the following conditions:

- * 

- * The above copyright notice and this permission notice shall be included

- * in all copies or substantial portions of the Software.

- * 

- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS

- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL

- * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN

- * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN

- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

- */

-

-/*

- * DOS/DJGPP device driver v1.3 for Mesa  --  MGA2064W HW mapping

- *

- *  Copyright (c) 2003 - Borca Daniel

- *  Email : dborca@yahoo.com

- *  Web   : http://www.geocities.com/dborca

- */

-

-

-#ifndef MGA_HW_included

-#define MGA_HW_included

-

-

-

-/* set this to zero to use near pointers */

-#define MGA_FARPTR 1

-

-

-

-/* access macros */

-#if MGA_FARPTR

-

-#include <sys/farptr.h>

-

-#define hwptr_pokeb(ptr, off, val)     _farpokeb((ptr).selector, (ptr).offset32+(off), (val))

-#define hwptr_pokew(ptr, off, val)     _farpokew((ptr).selector, (ptr).offset32+(off), (val))

-#define hwptr_pokel(ptr, off, val)     _farpokel((ptr).selector, (ptr).offset32+(off), (val))

-

-#define hwptr_peekb(ptr, off)          _farpeekb((ptr).selector, (ptr).offset32+(off))

-#define hwptr_peekw(ptr, off)          _farpeekw((ptr).selector, (ptr).offset32+(off))

-#define hwptr_peekl(ptr, off)          _farpeekl((ptr).selector, (ptr).offset32+(off))

-

-#define hwptr_select(ptr)              _farsetsel((ptr).selector)

-#define hwptr_unselect(ptr)            (ptr).selector = _fargetsel()

-

-#define hwptr_nspokeb(ptr, off, val)   _farnspokeb((ptr).offset32+(off), (val))

-#define hwptr_nspokew(ptr, off, val)   _farnspokew((ptr).offset32+(off), (val))

-#define hwptr_nspokel(ptr, off, val)   _farnspokel((ptr).offset32+(off), (val))

-

-#define hwptr_nspeekb(ptr, off)        _farnspeekb((ptr).offset32+(off))

-#define hwptr_nspeekw(ptr, off)        _farnspeekw((ptr).offset32+(off))

-#define hwptr_nspeekl(ptr, off)        _farnspeekl((ptr).offset32+(off))

-

-#else

-

-#define hwptr_pokeb(ptr, off, val)     *((volatile unsigned char *)((ptr).offset32+(off))) = (val)

-#define hwptr_pokew(ptr, off, val)     *((volatile unsigned short *)((ptr).offset32+(off))) = (val)

-#define hwptr_pokel(ptr, off, val)     *((volatile unsigned long *)((ptr).offset32+(off))) = (val)

-

-#define hwptr_peekb(ptr, off)          (*((volatile unsigned char *)((ptr).offset32+(off))))

-#define hwptr_peekw(ptr, off)          (*((volatile unsigned short *)((ptr).offset32+(off))))

-#define hwptr_peekl(ptr, off)          (*((volatile unsigned long *)((ptr).offset32+(off))))

-

-#define hwptr_select(ptr)

-#define hwptr_unselect(ptr)

-

-#define hwptr_nspokeb(ptr, off, val)   *((volatile unsigned char *)((ptr).offset32+(off))) = (val)

-#define hwptr_nspokew(ptr, off, val)   *((volatile unsigned short *)((ptr).offset32+(off))) = (val)

-#define hwptr_nspokel(ptr, off, val)   *((volatile unsigned long *)((ptr).offset32+(off))) = (val)

-

-#define hwptr_nspeekb(ptr, off)        (*((volatile unsigned char *)((ptr).offset32+(off))))

-#define hwptr_nspeekw(ptr, off)        (*((volatile unsigned short *)((ptr).offset32+(off))))

-#define hwptr_nspeekl(ptr, off)        (*((volatile unsigned long *)((ptr).offset32+(off))))

-

-#endif

-

-

-

-/* helpers for accessing the Matrox registers */

-#define mga_select()          hwptr_select(mgaptr.io_mem_map[0])

-#define mga_inb(addr)         hwptr_nspeekb(mgaptr.io_mem_map[0], addr)

-#define mga_inw(addr)         hwptr_nspeekw(mgaptr.io_mem_map[0], addr)

-#define mga_inl(addr)         hwptr_nspeekl(mgaptr.io_mem_map[0], addr)

-#define mga_outb(addr, val)   hwptr_nspokeb(mgaptr.io_mem_map[0], addr, val)

-#define mga_outw(addr, val)   hwptr_nspokew(mgaptr.io_mem_map[0], addr, val)

-#define mga_outl(addr, val)   hwptr_nspokel(mgaptr.io_mem_map[0], addr, val)

-

-

-

-typedef struct MGA_HWPTR {

-        __dpmi_paddr io_mem_map[4], linear_map;

-} MGA_HWPTR;

-

-extern MGA_HWPTR mgaptr;

-

-void mga_hw_fini (void);

-int mga_hw_init (unsigned long *vram, int *interleave, char *name);

-

-#endif

+/*
+ * Mesa 3-D graphics library
+ * Version:  5.0
+ * 
+ * Copyright (C) 1999-2002  Brian Paul   All Rights Reserved.
+ * 
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ * 
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/*
+ * DOS/DJGPP device driver v1.3 for Mesa  --  MGA2064W HW mapping
+ *
+ *  Copyright (c) 2003 - Borca Daniel
+ *  Email : dborca@yahoo.com
+ *  Web   : http://www.geocities.com/dborca
+ */
+
+
+#ifndef MGA_HW_included
+#define MGA_HW_included
+
+
+
+/* set this to zero to use near pointers */
+#define MGA_FARPTR 1
+
+
+
+/* access macros */
+#if MGA_FARPTR
+
+#include <sys/farptr.h>
+
+#define hwptr_pokeb(ptr, off, val)     _farpokeb((ptr).selector, (ptr).offset32+(off), (val))
+#define hwptr_pokew(ptr, off, val)     _farpokew((ptr).selector, (ptr).offset32+(off), (val))
+#define hwptr_pokel(ptr, off, val)     _farpokel((ptr).selector, (ptr).offset32+(off), (val))
+
+#define hwptr_peekb(ptr, off)          _farpeekb((ptr).selector, (ptr).offset32+(off))
+#define hwptr_peekw(ptr, off)          _farpeekw((ptr).selector, (ptr).offset32+(off))
+#define hwptr_peekl(ptr, off)          _farpeekl((ptr).selector, (ptr).offset32+(off))
+
+#define hwptr_select(ptr)              _farsetsel((ptr).selector)
+#define hwptr_unselect(ptr)            (ptr).selector = _fargetsel()
+
+#define hwptr_nspokeb(ptr, off, val)   _farnspokeb((ptr).offset32+(off), (val))
+#define hwptr_nspokew(ptr, off, val)   _farnspokew((ptr).offset32+(off), (val))
+#define hwptr_nspokel(ptr, off, val)   _farnspokel((ptr).offset32+(off), (val))
+
+#define hwptr_nspeekb(ptr, off)        _farnspeekb((ptr).offset32+(off))
+#define hwptr_nspeekw(ptr, off)        _farnspeekw((ptr).offset32+(off))
+#define hwptr_nspeekl(ptr, off)        _farnspeekl((ptr).offset32+(off))
+
+#else
+
+#define hwptr_pokeb(ptr, off, val)     *((volatile unsigned char *)((ptr).offset32+(off))) = (val)
+#define hwptr_pokew(ptr, off, val)     *((volatile unsigned short *)((ptr).offset32+(off))) = (val)
+#define hwptr_pokel(ptr, off, val)     *((volatile unsigned long *)((ptr).offset32+(off))) = (val)
+
+#define hwptr_peekb(ptr, off)          (*((volatile unsigned char *)((ptr).offset32+(off))))
+#define hwptr_peekw(ptr, off)          (*((volatile unsigned short *)((ptr).offset32+(off))))
+#define hwptr_peekl(ptr, off)          (*((volatile unsigned long *)((ptr).offset32+(off))))
+
+#define hwptr_select(ptr)
+#define hwptr_unselect(ptr)
+
+#define hwptr_nspokeb(ptr, off, val)   *((volatile unsigned char *)((ptr).offset32+(off))) = (val)
+#define hwptr_nspokew(ptr, off, val)   *((volatile unsigned short *)((ptr).offset32+(off))) = (val)
+#define hwptr_nspokel(ptr, off, val)   *((volatile unsigned long *)((ptr).offset32+(off))) = (val)
+
+#define hwptr_nspeekb(ptr, off)        (*((volatile unsigned char *)((ptr).offset32+(off))))
+#define hwptr_nspeekw(ptr, off)        (*((volatile unsigned short *)((ptr).offset32+(off))))
+#define hwptr_nspeekl(ptr, off)        (*((volatile unsigned long *)((ptr).offset32+(off))))
+
+#endif
+
+
+
+/* helpers for accessing the Matrox registers */
+#define mga_select()          hwptr_select(mgaptr.io_mem_map[0])
+#define mga_inb(addr)         hwptr_nspeekb(mgaptr.io_mem_map[0], addr)
+#define mga_inw(addr)         hwptr_nspeekw(mgaptr.io_mem_map[0], addr)
+#define mga_inl(addr)         hwptr_nspeekl(mgaptr.io_mem_map[0], addr)
+#define mga_outb(addr, val)   hwptr_nspokeb(mgaptr.io_mem_map[0], addr, val)
+#define mga_outw(addr, val)   hwptr_nspokew(mgaptr.io_mem_map[0], addr, val)
+#define mga_outl(addr, val)   hwptr_nspokel(mgaptr.io_mem_map[0], addr, val)
+
+
+
+typedef struct MGA_HWPTR {
+        __dpmi_paddr io_mem_map[4], linear_map;
+} MGA_HWPTR;
+
+extern MGA_HWPTR mgaptr;
+
+void mga_hw_fini (void);
+int mga_hw_init (unsigned long *vram, int *interleave, char *name);
+
+#endif
diff --git a/src/mesa/drivers/dos/mga/mga_mode.c b/src/mesa/drivers/dos/mga/mga_mode.c
index 4c6d926111..efba24ca69 100644
--- a/src/mesa/drivers/dos/mga/mga_mode.c
+++ b/src/mesa/drivers/dos/mga/mga_mode.c
@@ -1,231 +1,231 @@
-/*

- * Mesa 3-D graphics library

- * Version:  5.0

- * 

- * Copyright (C) 1999-2002  Brian Paul   All Rights Reserved.

- * 

- * Permission is hereby granted, free of charge, to any person obtaining a

- * copy of this software and associated documentation files (the "Software"),

- * to deal in the Software without restriction, including without limitation

- * the rights to use, copy, modify, merge, publish, distribute, sublicense,

- * and/or sell copies of the Software, and to permit persons to whom the

- * Software is furnished to do so, subject to the following conditions:

- * 

- * The above copyright notice and this permission notice shall be included

- * in all copies or substantial portions of the Software.

- * 

- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS

- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL

- * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN

- * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN

- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

- */

-

-/*

- * DOS/DJGPP device driver v1.3 for Mesa  --  MGA2064W mode switching

- *

- *  Copyright (c) 2003 - Borca Daniel

- *  Email : dborca@yahoo.com

- *  Web   : http://www.geocities.com/dborca

- */

-

-

-#include <dpmi.h>

-#include <string.h>

-#include <stubinfo.h>

-#include <sys/exceptn.h>

-#include <sys/farptr.h>

-#include <sys/movedata.h>

-#include <sys/segments.h>

-

-#include "../internal.h"

-#include "mga_mode.h"

-

-

-

-static MGA_MODE oldmode;

-static MGA_MODE modes[64];

-

-

-

-/*

- * VESA info

- */

-#define V_SIGN     0

-#define V_MINOR    4

-#define V_MAJOR    5

-#define V_OEM_OFS  6

-#define V_OEM_SEG  8

-#define V_MODE_OFS 14

-#define V_MODE_SEG 16

-#define V_MEMORY   18

-

-/*

- * mode info

- */

-#define M_ATTR     0

-#define M_GRAN     4

-#define M_SCANLEN  16

-#define M_XRES     18

-#define M_YRES     20

-#define M_BPP      25

-#define M_RED      31

-#define M_GREEN    33

-#define M_BLUE     35

-#define M_PHYS_PTR 40

-

-

-

-/* Desc: get available modes

- *

- * In  : -

- * Out : linear modes list ptr

- *

- * Note: shouldn't use VESA...

- */

-static MGA_MODE *_mga_mode_check (void)

-{

- __dpmi_regs r;

- word16 *p;

- MGA_MODE *q;

- char vesa_info[512], tmp[512];

-

- _farpokel(_stubinfo->ds_selector, 0, 0x32454256);

- r.x.ax = 0x4f00;

- r.x.di = 0;

- r.x.es = _stubinfo->ds_segment;

- __dpmi_int(0x10, &r);

- movedata(_stubinfo->ds_selector, 0, _my_ds(), (unsigned)vesa_info, 512);

- if ((r.x.ax!=0x004f) || ((_32_ vesa_info[V_SIGN])!=0x41534556)) {

-    return NULL;

- }

-

- p = (word16 *)(((_16_ vesa_info[V_MODE_SEG])<<4) + (_16_ vesa_info[V_MODE_OFS]));

- q = modes;

- do {

-     if ((q->mode=_farpeekw(__djgpp_dos_sel, (unsigned long)(p++)))==0xffff) {

-        break;

-     }

-

-     r.x.ax = 0x4f01;

-     r.x.cx = q->mode;

-     r.x.di = 512;

-     r.x.es = _stubinfo->ds_segment;

-     __dpmi_int(0x10, &r);

-     movedata(_stubinfo->ds_selector, 512, _my_ds(), (unsigned)tmp, 256);

-     switch (tmp[M_BPP]) {

-            case 16:

-                 q->bpp = tmp[M_RED] + tmp[M_GREEN] + tmp[M_BLUE];

-                 break;

-            case 8:

-            case 15:

-            case 24:

-            case 32:

-                 q->bpp = tmp[M_BPP];

-                 break;

-            default:

-                 q->bpp = 0;

-     }

-     if ((r.x.ax==0x004f) && ((tmp[M_ATTR]&0x11)==0x11) && q->bpp && (tmp[M_ATTR]&0x80)) {

-        q->xres = _16_ tmp[M_XRES];

-        q->yres = _16_ tmp[M_YRES];

-        q->mode |= 0x4000;

-        q++;

-     }

- } while (TRUE);

-

- return modes;

-}

-

-

-

-/* Desc: save current mode

- *

- * In  : ptr to mode structure

- * Out : 0 if success

- *

- * Note: shouldn't use VESA...

- */

-static int _mga_mode_save (MGA_MODE *p)

-{

- __asm("\n\

-		movw	$0x4f03, %%ax	\n\

-		int	$0x10		\n\

-		movl	%%ebx, %0	\n\

- ":"=g"(p->mode)::"%eax", "%ebx");

- return 0;

-}

-

-

-

-/* Desc: switch to specified mode

- *

- * In  : ptr to mode structure, refresh rate

- * Out : 0 if success

- *

- * Note: shouldn't use VESA...

- */

-int mga_mode_switch (MGA_MODE *p, int refresh)

-{

- if (oldmode.mode == 0) {

-    _mga_mode_save(&oldmode);

- }

- __asm("movw $0x4f02, %%ax; int  $0x10"::"b"(p->mode):"%eax");

- return 0;

-

- (void)refresh; /* silence compiler warning */

-}

-

-

-

-/* Desc: restore to the mode prior to first call to `mga_switch'

- *

- * In  : -

- * Out : 0 if success

- *

- * Note: shouldn't use VESA...

- */

-int mga_mode_restore (void)

-{

- if (oldmode.mode != 0) {

-    __asm("movw $0x4f02, %%ax; int  $0x10"::"b"(oldmode.mode):"%eax");

-    oldmode.mode = 0;

- }

- return 0;

-}

-

-

-

-/* Desc: return suitable mode

- *

- * In  : width, height, bpp

- * Out : ptr to mode structure

- *

- * Note: -

- */

-MGA_MODE *mga_mode_find (int width, int height, int bpp)

-{

- static MGA_MODE *q = NULL;

-

- MGA_MODE *p;

- unsigned int min;

-

- if (q == NULL) {

-    if ((q = _mga_mode_check()) == NULL) {

-       return NULL;

-    }

- }

-

- /* search for a mode that fits our request */

- for (min=-1, p=NULL; q->mode!=0xffff; q++) {

-     if ((q->xres>=width) && (q->yres>=height) && (q->bpp==bpp)) {

-        if (min>=(unsigned)(q->xres*q->yres)) {

-           min = q->xres*q->yres;

-           p = q;

-        }

-     }

- }

-

- return p;

-}

+/*
+ * Mesa 3-D graphics library
+ * Version:  5.0
+ * 
+ * Copyright (C) 1999-2002  Brian Paul   All Rights Reserved.
+ * 
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ * 
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/*
+ * DOS/DJGPP device driver v1.3 for Mesa  --  MGA2064W mode switching
+ *
+ *  Copyright (c) 2003 - Borca Daniel
+ *  Email : dborca@yahoo.com
+ *  Web   : http://www.geocities.com/dborca
+ */
+
+
+#include <dpmi.h>
+#include <string.h>
+#include <stubinfo.h>
+#include <sys/exceptn.h>
+#include <sys/farptr.h>
+#include <sys/movedata.h>
+#include <sys/segments.h>
+
+#include "../internal.h"
+#include "mga_mode.h"
+
+
+
+static MGA_MODE oldmode;
+static MGA_MODE modes[64];
+
+
+
+/*
+ * VESA info
+ */
+#define V_SIGN     0
+#define V_MINOR    4
+#define V_MAJOR    5
+#define V_OEM_OFS  6
+#define V_OEM_SEG  8
+#define V_MODE_OFS 14
+#define V_MODE_SEG 16
+#define V_MEMORY   18
+
+/*
+ * mode info
+ */
+#define M_ATTR     0
+#define M_GRAN     4
+#define M_SCANLEN  16
+#define M_XRES     18
+#define M_YRES     20
+#define M_BPP      25
+#define M_RED      31
+#define M_GREEN    33
+#define M_BLUE     35
+#define M_PHYS_PTR 40
+
+
+
+/* Desc: get available modes
+ *
+ * In  : -
+ * Out : linear modes list ptr
+ *
+ * Note: shouldn't use VESA...
+ */
+static MGA_MODE *_mga_mode_check (void)
+{
+ __dpmi_regs r;
+ word16 *p;
+ MGA_MODE *q;
+ char vesa_info[512], tmp[512];
+
+ _farpokel(_stubinfo->ds_selector, 0, 0x32454256);
+ r.x.ax = 0x4f00;
+ r.x.di = 0;
+ r.x.es = _stubinfo->ds_segment;
+ __dpmi_int(0x10, &r);
+ movedata(_stubinfo->ds_selector, 0, _my_ds(), (unsigned)vesa_info, 512);
+ if ((r.x.ax!=0x004f) || ((_32_ vesa_info[V_SIGN])!=0x41534556)) {
+    return NULL;
+ }
+
+ p = (word16 *)(((_16_ vesa_info[V_MODE_SEG])<<4) + (_16_ vesa_info[V_MODE_OFS]));
+ q = modes;
+ do {
+     if ((q->mode=_farpeekw(__djgpp_dos_sel, (unsigned long)(p++)))==0xffff) {
+        break;
+     }
+
+     r.x.ax = 0x4f01;
+     r.x.cx = q->mode;
+     r.x.di = 512;
+     r.x.es = _stubinfo->ds_segment;
+     __dpmi_int(0x10, &r);
+     movedata(_stubinfo->ds_selector, 512, _my_ds(), (unsigned)tmp, 256);
+     switch (tmp[M_BPP]) {
+            case 16:
+                 q->bpp = tmp[M_RED] + tmp[M_GREEN] + tmp[M_BLUE];
+                 break;
+            case 8:
+            case 15:
+            case 24:
+            case 32:
+                 q->bpp = tmp[M_BPP];
+                 break;
+            default:
+                 q->bpp = 0;
+     }
+     if ((r.x.ax==0x004f) && ((tmp[M_ATTR]&0x11)==0x11) && q->bpp && (tmp[M_ATTR]&0x80)) {
+        q->xres = _16_ tmp[M_XRES];
+        q->yres = _16_ tmp[M_YRES];
+        q->mode |= 0x4000;
+        q++;
+     }
+ } while (TRUE);
+
+ return modes;
+}
+
+
+
+/* Desc: save current mode
+ *
+ * In  : ptr to mode structure
+ * Out : 0 if success
+ *
+ * Note: shouldn't use VESA...
+ */
+static int _mga_mode_save (MGA_MODE *p)
+{
+ __asm("\n\
+		movw	$0x4f03, %%ax	\n\
+		int	$0x10		\n\
+		movl	%%ebx, %0	\n\
+ ":"=g"(p->mode)::"%eax", "%ebx");
+ return 0;
+}
+
+
+
+/* Desc: switch to specified mode
+ *
+ * In  : ptr to mode structure, refresh rate
+ * Out : 0 if success
+ *
+ * Note: shouldn't use VESA...
+ */
+int mga_mode_switch (MGA_MODE *p, int refresh)
+{
+ if (oldmode.mode == 0) {
+    _mga_mode_save(&oldmode);
+ }
+ __asm("movw $0x4f02, %%ax; int  $0x10"::"b"(p->mode):"%eax");
+ return 0;
+
+ (void)refresh; /* silence compiler warning */
+}
+
+
+
+/* Desc: restore to the mode prior to first call to `mga_switch'
+ *
+ * In  : -
+ * Out : 0 if success
+ *
+ * Note: shouldn't use VESA...
+ */
+int mga_mode_restore (void)
+{
+ if (oldmode.mode != 0) {
+    __asm("movw $0x4f02, %%ax; int  $0x10"::"b"(oldmode.mode):"%eax");
+    oldmode.mode = 0;
+ }
+ return 0;
+}
+
+
+
+/* Desc: return suitable mode
+ *
+ * In  : width, height, bpp
+ * Out : ptr to mode structure
+ *
+ * Note: -
+ */
+MGA_MODE *mga_mode_find (int width, int height, int bpp)
+{
+ static MGA_MODE *q = NULL;
+
+ MGA_MODE *p;
+ unsigned int min;
+
+ if (q == NULL) {
+    if ((q = _mga_mode_check()) == NULL) {
+       return NULL;
+    }
+ }
+
+ /* search for a mode that fits our request */
+ for (min=-1, p=NULL; q->mode!=0xffff; q++) {
+     if ((q->xres>=width) && (q->yres>=height) && (q->bpp==bpp)) {
+        if (min>=(unsigned)(q->xres*q->yres)) {
+           min = q->xres*q->yres;
+           p = q;
+        }
+     }
+ }
+
+ return p;
+}
diff --git a/src/mesa/drivers/dos/mga/mga_mode.h b/src/mesa/drivers/dos/mga/mga_mode.h
index b458d00d80..c9e04bc2ea 100644
--- a/src/mesa/drivers/dos/mga/mga_mode.h
+++ b/src/mesa/drivers/dos/mga/mga_mode.h
@@ -1,47 +1,47 @@
-/*

- * Mesa 3-D graphics library

- * Version:  5.0

- * 

- * Copyright (C) 1999-2002  Brian Paul   All Rights Reserved.

- * 

- * Permission is hereby granted, free of charge, to any person obtaining a

- * copy of this software and associated documentation files (the "Software"),

- * to deal in the Software without restriction, including without limitation

- * the rights to use, copy, modify, merge, publish, distribute, sublicense,

- * and/or sell copies of the Software, and to permit persons to whom the

- * Software is furnished to do so, subject to the following conditions:

- * 

- * The above copyright notice and this permission notice shall be included

- * in all copies or substantial portions of the Software.

- * 

- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS

- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL

- * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN

- * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN

- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

- */

-

-/*

- * DOS/DJGPP device driver v1.3 for Mesa  --  MGA2064W mode switching

- *

- *  Copyright (c) 2003 - Borca Daniel

- *  Email : dborca@yahoo.com

- *  Web   : http://www.geocities.com/dborca

- */

-

-

-#ifndef MGA_MODE_included

-#define MGA_MODE_included

-

-typedef struct MGA_MODE {

-        int mode;

-        int xres, yres;

-        int bpp;

-} MGA_MODE;

-

-int mga_mode_switch (MGA_MODE *p, int refresh);

-int mga_mode_restore (void);

-MGA_MODE *mga_mode_find (int width, int height, int bpp);

-

-#endif

+/*
+ * Mesa 3-D graphics library
+ * Version:  5.0
+ * 
+ * Copyright (C) 1999-2002  Brian Paul   All Rights Reserved.
+ * 
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ * 
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/*
+ * DOS/DJGPP device driver v1.3 for Mesa  --  MGA2064W mode switching
+ *
+ *  Copyright (c) 2003 - Borca Daniel
+ *  Email : dborca@yahoo.com
+ *  Web   : http://www.geocities.com/dborca
+ */
+
+
+#ifndef MGA_MODE_included
+#define MGA_MODE_included
+
+typedef struct MGA_MODE {
+        int mode;
+        int xres, yres;
+        int bpp;
+} MGA_MODE;
+
+int mga_mode_switch (MGA_MODE *p, int refresh);
+int mga_mode_restore (void);
+MGA_MODE *mga_mode_find (int width, int height, int bpp);
+
+#endif
diff --git a/src/mesa/drivers/dos/mga/mga_reg.h b/src/mesa/drivers/dos/mga/mga_reg.h
index 4cd664ff96..11db81886b 100644
--- a/src/mesa/drivers/dos/mga/mga_reg.h
+++ b/src/mesa/drivers/dos/mga/mga_reg.h
@@ -1,207 +1,207 @@
-/*

- * Mesa 3-D graphics library

- * Version:  5.0

- * 

- * Copyright (C) 1999-2002  Brian Paul   All Rights Reserved.

- * 

- * Permission is hereby granted, free of charge, to any person obtaining a

- * copy of this software and associated documentation files (the "Software"),

- * to deal in the Software without restriction, including without limitation

- * the rights to use, copy, modify, merge, publish, distribute, sublicense,

- * and/or sell copies of the Software, and to permit persons to whom the

- * Software is furnished to do so, subject to the following conditions:

- * 

- * The above copyright notice and this permission notice shall be included

- * in all copies or substantial portions of the Software.

- * 

- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS

- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL

- * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN

- * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN

- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

- */

-

-/*

- * DOS/DJGPP device driver v1.3 for Mesa  --  MGA2064W register mnemonics

- *

- *  Copyright (c) 2003 - Borca Daniel

- *  Email : dborca@yahoo.com

- *  Web   : http://www.geocities.com/dborca

- */

-

-

-#ifndef MGA_REG_H_included

-#define MGA_REG_H_included

-

-/* Matrox hardware registers: */

-#define M_AR0                 0x1C60

-#define M_AR1                 0x1C64

-#define M_AR2                 0x1C68

-#define M_AR3                 0x1C6C

-#define M_AR4                 0x1C70

-#define M_AR5                 0x1C74

-#define M_AR6                 0x1C78

-#define M_BCOL                0x1C20

-#define M_CXBNDRY             0x1C80

-#define M_CXLEFT              0x1CA0

-#define M_CXRIGHT             0x1CA4

-#define M_DR0                 0x1CC0

-#define M_DR2                 0x1CC8

-#define M_DR3                 0x1CCC

-#define M_DR4                 0x1CD0

-#define M_DR6                 0x1CD8

-#define M_DR7                 0x1CDC

-#define M_DR8                 0x1CE0

-#define M_DR10                0x1CE8

-#define M_DR11                0x1CEC

-#define M_DR12                0x1CF0

-#define M_DR14                0x1CF8

-#define M_DR15                0x1CFC

-#define M_DWGCTL              0x1C00

-#define M_FCOL                0x1C24

-#define M_FIFOSTATUS          0x1E10

-#define M_FXBNDRY             0x1C84

-#define M_FXLEFT              0x1CA8

-#define M_FXRIGHT             0x1CAC

-#define M_ICLEAR              0x1E18

-#define M_IEN                 0x1E1C

-#define M_LEN                 0x1C5C

-#define M_MACCESS             0x1C04

-#define M_OPMODE              0x1E54

-#define M_PAT0                0x1C10

-#define M_PAT1                0x1C14

-#define M_PITCH               0x1C8C

-#define M_PLNWT               0x1C1C

-#define M_RESET               0x1E40

-#define M_SGN                 0x1C58

-#define M_SHIFT               0x1C50

-#define M_SRC0                0x1C30

-#define M_SRC1                0x1C34

-#define M_SRC2                0x1C38

-#define M_SRC3                0x1C3C

-#define M_STATUS              0x1E14

-#define M_VCOUNT              0x1E20

-#define M_XDST                0x1CB0

-#define M_XYEND               0x1C44

-#define M_XYSTRT              0x1C40

-#define M_YBOT                0x1C9C

-#define M_YDST                0x1C90

-#define M_YDSTLEN             0x1C88

-#define M_YDSTORG             0x1C94

-#define M_YTOP                0x1C98

-#define M_ZORG                0x1C0C

-

-#define M_EXEC                0x0100

-

-/* DWGCTL: opcod */

-#define M_DWG_LINE_OPEN       0x0

-#define M_DWG_AUTOLINE_OPEN   0x1

-#define M_DWG_LINE_CLOSE      0x2

-#define M_DWG_AUTOLINE_CLOSE  0x3

-#define M_DWG_TRAP            0x4

-#define M_DWG_TEXTURE_TRAP    0x5

-#define M_DWG_BITBLT          0x8

-#define M_DWG_FBITBLT         0xC

-#define M_DWG_ILOAD           0x9

-#define M_DWG_ILOAD_SCALE     0xD

-#define M_DWG_ILOAD_FILTER    0xF

-#define M_DWG_IDUMP           0xA

-

-/* DWGCTL: atype */

-#define M_DWG_RPL             (0x0 << 4)

-#define M_DWG_RSTR            (0x1 << 4)

-#define M_DWG_ZI              (0x3 << 4)

-#define M_DWG_BLK             (0x4 << 4)

-#define M_DWG_I               (0x7 << 4)

-

-/* DWGCTL: linear */

-#define M_DWG_LINEAR          (0x1 << 7)

-

-/* DWGCTL: zmode */

-#define M_DWG_NOZCMP          (0x0 << 8)

-#define M_DWG_ZE              (0x2 << 8)

-#define M_DWG_ZNE             (0x3 << 8)

-#define M_DWG_ZLT             (0x4 << 8)

-#define M_DWG_ZLTE            (0x5 << 8)

-#define M_DWG_ZGT             (0x6 << 8)

-#define M_DWG_ZGTE            (0x7 << 8)

-

-/* DWGCTL: solid */

-#define M_DWG_SOLID           (0x1 << 11)

-

-/* DWGCTL: arzero */

-#define M_DWG_ARZERO          (0x1 << 12)

-

-/* DWGCTL: sgnzero */

-#define M_DWG_SGNZERO         (0x1 << 13)

-

-/* DWGCTL: shiftzero */

-#define M_DWG_SHFTZERO        (0x1 << 14)

-

-/* DWGCTL: bop */

-#define M_DWG_BOP_XOR         (0x6 << 16)

-#define M_DWG_BOP_AND         (0x8 << 16)

-#define M_DWG_BOP_SRC         (0xC << 16)

-#define M_DWG_BOP_OR          (0xE << 16)

-

-/* DWGCTL: trans */

-#define M_DWG_TRANS_0         (0x0 << 20)

-#define M_DWG_TRANS_1         (0x1 << 20)

-#define M_DWG_TRANS_2         (0x2 << 20)

-#define M_DWG_TRANS_3         (0x3 << 20)

-#define M_DWG_TRANS_4         (0x4 << 20)

-#define M_DWG_TRANS_5         (0x5 << 20)

-#define M_DWG_TRANS_6         (0x6 << 20)

-#define M_DWG_TRANS_7         (0x7 << 20)

-#define M_DWG_TRANS_8         (0x8 << 20)

-#define M_DWG_TRANS_9         (0x9 << 20)

-#define M_DWG_TRANS_A         (0xA << 20)

-#define M_DWG_TRANS_B         (0xB << 20)

-#define M_DWG_TRANS_C         (0xC << 20)

-#define M_DWG_TRANS_D         (0xD << 20)

-#define M_DWG_TRANS_E         (0xE << 20)

-#define M_DWG_TRANS_F         (0xF << 20)

-

-/* DWGCTL: bltmod */

-#define M_DWG_BMONOLEF        (0x0 << 25)

-#define M_DWG_BMONOWF         (0x4 << 25)

-#define M_DWG_BPLAN           (0x1 << 25)

-#define M_DWG_BFCOL           (0x2 << 25)

-#define M_DWG_BUYUV           (0xE << 25)

-#define M_DWG_BU32BGR         (0x3 << 25)

-#define M_DWG_BU32RGB         (0x7 << 25)

-#define M_DWG_BU24BGR         (0xB << 25)

-#define M_DWG_BU24RGB         (0xF << 25)

-

-/* DWGCTL: pattern */

-#define M_DWG_PATTERN         (0x1 << 29)

-

-/* DWGCTL: transc */

-#define M_DWG_TRANSC          (0x1 << 30)

-

-/* OPMODE: */

-#define M_DMA_GENERAL         (0x0 << 2)

-#define M_DMA_BLIT            (0x1 << 2)

-#define M_DMA_VECTOR          (0x2 << 2)

-

-/* SGN: */

-#define M_SDXL                (0x1 << 1)

-#define M_SDXR                (0x1 << 5)

-

-

-

-/* VGAREG */

-#define M_CRTC_INDEX          0x1FD4

-#define M_CRTC_DATA           0x1FD5

-

-#define M_CRTC_EXT_INDEX      0x1FDE

-#define M_CRTC_EXT_DATA       0x1FDF

-

-#define M_MISC_R              0x1FCC

-#define M_MISC_W              0x1FC2

-

-/* CRTCEXT3: */

-#define M_MGAMODE             (0x1 << 7)

-

-#endif

+/*
+ * Mesa 3-D graphics library
+ * Version:  5.0
+ * 
+ * Copyright (C) 1999-2002  Brian Paul   All Rights Reserved.
+ * 
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ * 
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/*
+ * DOS/DJGPP device driver v1.3 for Mesa  --  MGA2064W register mnemonics
+ *
+ *  Copyright (c) 2003 - Borca Daniel
+ *  Email : dborca@yahoo.com
+ *  Web   : http://www.geocities.com/dborca
+ */
+
+
+#ifndef MGA_REG_H_included
+#define MGA_REG_H_included
+
+/* Matrox hardware registers: */
+#define M_AR0                 0x1C60
+#define M_AR1                 0x1C64
+#define M_AR2                 0x1C68
+#define M_AR3                 0x1C6C
+#define M_AR4                 0x1C70
+#define M_AR5                 0x1C74
+#define M_AR6                 0x1C78
+#define M_BCOL                0x1C20
+#define M_CXBNDRY             0x1C80
+#define M_CXLEFT              0x1CA0
+#define M_CXRIGHT             0x1CA4
+#define M_DR0                 0x1CC0
+#define M_DR2                 0x1CC8
+#define M_DR3                 0x1CCC
+#define M_DR4                 0x1CD0
+#define M_DR6                 0x1CD8
+#define M_DR7                 0x1CDC
+#define M_DR8                 0x1CE0
+#define M_DR10                0x1CE8
+#define M_DR11                0x1CEC
+#define M_DR12                0x1CF0
+#define M_DR14                0x1CF8
+#define M_DR15                0x1CFC
+#define M_DWGCTL              0x1C00
+#define M_FCOL                0x1C24
+#define M_FIFOSTATUS          0x1E10
+#define M_FXBNDRY             0x1C84
+#define M_FXLEFT              0x1CA8
+#define M_FXRIGHT             0x1CAC
+#define M_ICLEAR              0x1E18
+#define M_IEN                 0x1E1C
+#define M_LEN                 0x1C5C
+#define M_MACCESS             0x1C04
+#define M_OPMODE              0x1E54
+#define M_PAT0                0x1C10
+#define M_PAT1                0x1C14
+#define M_PITCH               0x1C8C
+#define M_PLNWT               0x1C1C
+#define M_RESET               0x1E40
+#define M_SGN                 0x1C58
+#define M_SHIFT               0x1C50
+#define M_SRC0                0x1C30
+#define M_SRC1                0x1C34
+#define M_SRC2                0x1C38
+#define M_SRC3                0x1C3C
+#define M_STATUS              0x1E14
+#define M_VCOUNT              0x1E20
+#define M_XDST                0x1CB0
+#define M_XYEND               0x1C44
+#define M_XYSTRT              0x1C40
+#define M_YBOT                0x1C9C
+#define M_YDST                0x1C90
+#define M_YDSTLEN             0x1C88
+#define M_YDSTORG             0x1C94
+#define M_YTOP                0x1C98
+#define M_ZORG                0x1C0C
+
+#define M_EXEC                0x0100
+
+/* DWGCTL: opcod */
+#define M_DWG_LINE_OPEN       0x0
+#define M_DWG_AUTOLINE_OPEN   0x1
+#define M_DWG_LINE_CLOSE      0x2
+#define M_DWG_AUTOLINE_CLOSE  0x3
+#define M_DWG_TRAP            0x4
+#define M_DWG_TEXTURE_TRAP    0x5
+#define M_DWG_BITBLT          0x8
+#define M_DWG_FBITBLT         0xC
+#define M_DWG_ILOAD           0x9
+#define M_DWG_ILOAD_SCALE     0xD
+#define M_DWG_ILOAD_FILTER    0xF
+#define M_DWG_IDUMP           0xA
+
+/* DWGCTL: atype */
+#define M_DWG_RPL             (0x0 << 4)
+#define M_DWG_RSTR            (0x1 << 4)
+#define M_DWG_ZI              (0x3 << 4)
+#define M_DWG_BLK             (0x4 << 4)
+#define M_DWG_I               (0x7 << 4)
+
+/* DWGCTL: linear */
+#define M_DWG_LINEAR          (0x1 << 7)
+
+/* DWGCTL: zmode */
+#define M_DWG_NOZCMP          (0x0 << 8)
+#define M_DWG_ZE              (0x2 << 8)
+#define M_DWG_ZNE             (0x3 << 8)
+#define M_DWG_ZLT             (0x4 << 8)
+#define M_DWG_ZLTE            (0x5 << 8)
+#define M_DWG_ZGT             (0x6 << 8)
+#define M_DWG_ZGTE            (0x7 << 8)
+
+/* DWGCTL: solid */
+#define M_DWG_SOLID           (0x1 << 11)
+
+/* DWGCTL: arzero */
+#define M_DWG_ARZERO          (0x1 << 12)
+
+/* DWGCTL: sgnzero */
+#define M_DWG_SGNZERO         (0x1 << 13)
+
+/* DWGCTL: shiftzero */
+#define M_DWG_SHFTZERO        (0x1 << 14)
+
+/* DWGCTL: bop */
+#define M_DWG_BOP_XOR         (0x6 << 16)
+#define M_DWG_BOP_AND         (0x8 << 16)
+#define M_DWG_BOP_SRC         (0xC << 16)
+#define M_DWG_BOP_OR          (0xE << 16)
+
+/* DWGCTL: trans */
+#define M_DWG_TRANS_0         (0x0 << 20)
+#define M_DWG_TRANS_1         (0x1 << 20)
+#define M_DWG_TRANS_2         (0x2 << 20)
+#define M_DWG_TRANS_3         (0x3 << 20)
+#define M_DWG_TRANS_4         (0x4 << 20)
+#define M_DWG_TRANS_5         (0x5 << 20)
+#define M_DWG_TRANS_6         (0x6 << 20)
+#define M_DWG_TRANS_7         (0x7 << 20)
+#define M_DWG_TRANS_8         (0x8 << 20)
+#define M_DWG_TRANS_9         (0x9 << 20)
+#define M_DWG_TRANS_A         (0xA << 20)
+#define M_DWG_TRANS_B         (0xB << 20)
+#define M_DWG_TRANS_C         (0xC << 20)
+#define M_DWG_TRANS_D         (0xD << 20)
+#define M_DWG_TRANS_E         (0xE << 20)
+#define M_DWG_TRANS_F         (0xF << 20)
+
+/* DWGCTL: bltmod */
+#define M_DWG_BMONOLEF        (0x0 << 25)
+#define M_DWG_BMONOWF         (0x4 << 25)
+#define M_DWG_BPLAN           (0x1 << 25)
+#define M_DWG_BFCOL           (0x2 << 25)
+#define M_DWG_BUYUV           (0xE << 25)
+#define M_DWG_BU32BGR         (0x3 << 25)
+#define M_DWG_BU32RGB         (0x7 << 25)
+#define M_DWG_BU24BGR         (0xB << 25)
+#define M_DWG_BU24RGB         (0xF << 25)
+
+/* DWGCTL: pattern */
+#define M_DWG_PATTERN         (0x1 << 29)
+
+/* DWGCTL: transc */
+#define M_DWG_TRANSC          (0x1 << 30)
+
+/* OPMODE: */
+#define M_DMA_GENERAL         (0x0 << 2)
+#define M_DMA_BLIT            (0x1 << 2)
+#define M_DMA_VECTOR          (0x2 << 2)
+
+/* SGN: */
+#define M_SDXL                (0x1 << 1)
+#define M_SDXR                (0x1 << 5)
+
+
+
+/* VGAREG */
+#define M_CRTC_INDEX          0x1FD4
+#define M_CRTC_DATA           0x1FD5
+
+#define M_CRTC_EXT_INDEX      0x1FDE
+#define M_CRTC_EXT_DATA       0x1FDF
+
+#define M_MISC_R              0x1FCC
+#define M_MISC_W              0x1FC2
+
+/* CRTCEXT3: */
+#define M_MGAMODE             (0x1 << 7)
+
+#endif
diff --git a/src/mesa/drivers/dos/vesa.c b/src/mesa/drivers/dos/vesa.c
index cb8c29dfc7..ea5bcb7a86 100644
--- a/src/mesa/drivers/dos/vesa.c
+++ b/src/mesa/drivers/dos/vesa.c
@@ -1,533 +1,533 @@
-/*

- * Mesa 3-D graphics library

- * Version:  4.1

- * 

- * Copyright (C) 1999  Brian Paul   All Rights Reserved.

- * 

- * Permission is hereby granted, free of charge, to any person obtaining a

- * copy of this software and associated documentation files (the "Software"),

- * to deal in the Software without restriction, including without limitation

- * the rights to use, copy, modify, merge, publish, distribute, sublicense,

- * and/or sell copies of the Software, and to permit persons to whom the

- * Software is furnished to do so, subject to the following conditions:

- * 

- * The above copyright notice and this permission notice shall be included

- * in all copies or substantial portions of the Software.

- * 

- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS

- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL

- * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN

- * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN

- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

- */

-

-/*

- * DOS/DJGPP device driver v1.3 for Mesa

- *

- *  Copyright (C) 2002 - Borca Daniel

- *  Email : dborca@yahoo.com

- *  Web   : http://www.geocities.com/dborca

- */

-

-

-#include <dpmi.h>

-#include <pc.h>

-#include <stdlib.h>

-#include <stubinfo.h>

-#include <sys/exceptn.h>

-#include <sys/segments.h>

-#include <sys/farptr.h>

-#include <sys/movedata.h>

-

-#include "video.h"

-#include "vesa.h"

-

-

-

-static vl_mode modes[128];

-

-static word16 vesa_ver;

-static int banked_selector, linear_selector;

-static int oldmode = -1;

-

-static int vesa_color_precision = 6;

-

-static word16 *vesa_pmcode;

-unsigned int vesa_gran_mask, vesa_gran_shift;

-

-

-

-/*

- * VESA info

- */

-#define V_SIGN     0

-#define V_MINOR    4

-#define V_MAJOR    5

-#define V_OEM_OFS  6

-#define V_OEM_SEG  8

-#define V_MODE_OFS 14

-#define V_MODE_SEG 16

-#define V_MEMORY   18

-

-/*

- * mode info

- */

-#define M_ATTR     0

-#define M_GRAN     4

-#define M_SCANLEN  16

-#define M_XRES     18

-#define M_YRES     20

-#define M_BPP      25

-#define M_RED      31

-#define M_GREEN    33

-#define M_BLUE     35

-#define M_PHYS_PTR 40

-

-/*

- * VESA 3.0 CRTC timings structure

- */

-typedef struct CRTCInfoBlock {

-        unsigned short HorizontalTotal;

-        unsigned short HorizontalSyncStart;

-        unsigned short HorizontalSyncEnd;

-        unsigned short VerticalTotal;

-        unsigned short VerticalSyncStart;

-        unsigned short VerticalSyncEnd;

-        unsigned char  Flags;

-        unsigned long  PixelClock;         /* units of Hz */

-        unsigned short RefreshRate;        /* units of 0.01 Hz */

-        unsigned char  reserved[40];

-} __PACKED__ CRTCInfoBlock;

-

-#define HNEG         (1 << 2)

-#define VNEG         (1 << 3)

-#define DOUBLESCAN   (1 << 0)

-

-

-

-/* Desc: Attempts to detect VESA, check video modes and create selectors.

- *

- * In  : -

- * Out : mode array

- *

- * Note: -

- */

-static vl_mode *vesa_init (void)

-{

- __dpmi_regs r;

- word16 *p;

- vl_mode *q;

- char vesa_info[512], tmp[512];

- int maxsize = 0;

- word32 linearfb = 0;

-

- if (vesa_ver) {

-    return modes;

- }

-

- _farpokel(_stubinfo->ds_selector, 0, 0x32454256);

- r.x.ax = 0x4f00;

- r.x.di = 0;

- r.x.es = _stubinfo->ds_segment;

- __dpmi_int(0x10, &r);

- movedata(_stubinfo->ds_selector, 0, _my_ds(), (unsigned)vesa_info, 512);

- if ((r.x.ax!=0x004f) || ((_32_ vesa_info[V_SIGN])!=0x41534556)) {

-    return NULL;

- }

-

- p = (word16 *)(((_16_ vesa_info[V_MODE_SEG])<<4) + (_16_ vesa_info[V_MODE_OFS]));

- q = modes;

- do {

-     if ((q->mode=_farpeekw(__djgpp_dos_sel, (unsigned long)(p++)))==0xffff) {

-        break;

-     }

-

-     r.x.ax = 0x4f01;

-     r.x.cx = q->mode;

-     r.x.di = 512;

-     r.x.es = _stubinfo->ds_segment;

-     __dpmi_int(0x10, &r);

-     movedata(_stubinfo->ds_selector, 512, _my_ds(), (unsigned)tmp, 256);

-     switch (tmp[M_BPP]) {

-            case 16:

-                 q->bpp = tmp[M_RED] + tmp[M_GREEN] + tmp[M_BLUE];

-                 break;

-            case 8:

-            case 15:

-            case 24:

-            case 32:

-                 q->bpp = tmp[M_BPP];

-                 break;

-            default:

-                 q->bpp = 0;

-     }

-     if ((r.x.ax==0x004f) && ((tmp[M_ATTR]&0x11)==0x11) && q->bpp) {

-        q->xres = _16_ tmp[M_XRES];

-        q->yres = _16_ tmp[M_YRES];

-        q->scanlen = _16_ tmp[M_SCANLEN];

-        q->gran = (_16_ tmp[M_GRAN])<<10;

-        if (tmp[M_ATTR]&0x80) {

-#if 0

-           *(q+1) = *q++;

-#else

-           vl_mode *q1 = q + 1;

-           *q1 = *q++;

-#endif

-           linearfb = _32_ tmp[M_PHYS_PTR];

-           q->mode |= 0x4000;

-        }

-        if (maxsize<(q->scanlen*q->yres)) {

-           maxsize = q->scanlen*q->yres;

-        }

-        q++;

-     }

- } while (TRUE);

-

- if (q==modes) {

-    return NULL;

- }

- if (linearfb) {

-    maxsize = ((maxsize+0xfffUL)&~0xfffUL);

-    if (_create_selector(&linear_selector, linearfb, maxsize)) {

-       return NULL;

-    }

- }

- if (_create_selector(&banked_selector, 0xa0000, modes[0].gran)) {

-    _remove_selector(&linear_selector);

-    return NULL;

- }

-

- for (q=modes; q->mode!=0xffff; q++) {

-     q->sel = (q->mode&0x4000) ? linear_selector : banked_selector;

- }

-

- if (vesa_info[V_MAJOR] >= 2) {

-    r.x.ax = 0x4f0a;

-    r.x.bx = 0;

-    __dpmi_int(0x10, &r);

-    if (r.x.ax == 0x004f) {

-       vesa_pmcode = (word16 *)malloc(r.x.cx);

-       movedata(__djgpp_dos_sel, (r.x.es << 4) + r.x.di, _my_ds(), (unsigned)vesa_pmcode, r.x.cx);

-       if (vesa_pmcode[3]) {

-          p = (word16 *)((long)vesa_pmcode + vesa_pmcode[3]);

-          while (*p++ != 0xffff) ;

-       } else {

-          p = NULL;

-       }

-       if (p && (*p != 0xffff)) {

-          free(vesa_pmcode);

-          vesa_pmcode = NULL;

-       } else {

-          vesa_swbank = (void *)((long)vesa_pmcode + vesa_pmcode[0]);

-       }

-    }

- }

-

- vesa_ver = _16_ vesa_info[V_MINOR];

- return modes;

-}

-

-

-

-/* Desc: Frees all resources allocated by VESA init code.

- *

- * In  : -

- * Out : -

- *

- * Note: -

- */

-static void vesa_fini (void)

-{

- if (vesa_ver) {

-    _remove_selector(&linear_selector);

-    _remove_selector(&banked_selector);

-    if (vesa_pmcode != NULL) {

-       free(vesa_pmcode);

-       vesa_pmcode = NULL;

-    }

- }

-}

-

-

-

-/* Desc: Uses VESA 3.0 function 0x4F0B to find the closest pixel clock to the requested value.

- *

- * In  : mode, clock

- * Out : desired clock

- *

- * Note: -

- */

-static unsigned long _closest_pixclk (int mode_no, unsigned long vclk)

-{

- __dpmi_regs r;

-

- r.x.ax = 0x4F0B;

- r.h.bl = 0;

- r.d.ecx = vclk;

- r.x.dx = mode_no;

- __dpmi_int(0x10, &r);

-

- return (r.x.ax==0x004f) ? r.d.ecx : 0;

-}

-

-

-

-/* Desc: Calculates CRTC mode timings.

- *

- * In  : crtc block, geometry, adjust

- * Out :

- *

- * Note:

- */

-static void _crtc_timing (CRTCInfoBlock *crtc, int xres, int yres, int xadjust, int yadjust)

-{

- int HTotal, VTotal;

- int HDisp, VDisp;

- int HSS, VSS;

- int HSE, VSE;

- int HSWidth, VSWidth;

- int SS, SE;

- int doublescan = FALSE;

-

- if (yres < 400) {

-    doublescan = TRUE;

-    yres *= 2;

- }

-

- HDisp = xres;

- HTotal = (int)(HDisp * 1.27) & ~0x7;

- HSWidth = (int)((HTotal - HDisp) / 5) & ~0x7;

- HSS = HDisp + 16;

- HSE = HSS + HSWidth;

- VDisp = yres;

- VTotal = VDisp * 1.07;

- VSWidth = (VTotal / 100) + 1;

- VSS = VDisp + ((int)(VTotal - VDisp) / 5) + 1;

- VSE = VSS + VSWidth;

-

- SS = HSS + xadjust;

- SE = HSE + xadjust;

-

- if (xadjust < 0) {

-    if (SS < (HDisp + 8)) {

-       SS = HDisp + 8;

-       SE = SS + HSWidth;

-    }

- } else {

-    if ((HTotal - 24) < SE) {

-       SE = HTotal - 24;

-       SS = SE - HSWidth;

-    }

- }

-

- HSS = SS;

- HSE = SE;

-

- SS = VSS + yadjust;

- SE = VSE + yadjust;

-

- if (yadjust < 0) {

-    if (SS < (VDisp + 3)) {

-       SS = VDisp + 3;

-       SE = SS + VSWidth;

-    }

- } else {

-    if ((VTotal - 4) < SE) {

-       SE = VTotal - 4;

-       SS = SE - VSWidth;

-    }

- }

-

- VSS = SS;

- VSE = SE;

-

- crtc->HorizontalTotal     = HTotal;

- crtc->HorizontalSyncStart = HSS;

- crtc->HorizontalSyncEnd   = HSE;

- crtc->VerticalTotal       = VTotal;

- crtc->VerticalSyncStart   = VSS;

- crtc->VerticalSyncEnd     = VSE;

- crtc->Flags               = HNEG | VNEG;

-

- if (doublescan)

-    crtc->Flags |= DOUBLESCAN;

-}

-

-

-

-/* Desc: Attempts to enter specified video mode.

- *

- * In  : ptr to mode structure, refresh rate

- * Out : 0 if success

- *

- * Note: -

- */

-static int vesa_entermode (vl_mode *p, int refresh)

-{

- __dpmi_regs r;

-

- if (p->mode & 0x4000) {

-    VESA.blit = _can_mmx() ? vesa_l_dump_virtual_mmx : vesa_l_dump_virtual;

- } else {

-    VESA.blit = vesa_b_dump_virtual;

-    { int n; for (vesa_gran_shift=0, n=p->gran; n; vesa_gran_shift++, n>>=1) ; }

-    vesa_gran_mask = (1<<(--vesa_gran_shift)) - 1;

-    if ((unsigned)p->gran != (vesa_gran_mask+1)) {

-       return !0;

-    }

- }

-

- if (oldmode == -1) {

-    r.x.ax = 0x4f03;

-    __dpmi_int(0x10, &r);

-    oldmode = r.x.bx;

- }

-

- r.x.ax = 0x4f02;

- r.x.bx = p->mode;

-

- if (refresh && ((vesa_ver>>8) >= 3)) {

-    /* VESA 3.0 stuff for controlling the refresh rate */

-    CRTCInfoBlock crtc;

-    unsigned long vclk;

-    double f0;

-

-    _crtc_timing(&crtc, p->xres, p->yres, 0, 0);

-

-    vclk = (double)crtc.HorizontalTotal * crtc.VerticalTotal * refresh;

-    vclk = _closest_pixclk(p->mode, vclk);

-

-    if (vclk != 0) {

-       f0 = (double)vclk / (crtc.HorizontalTotal * crtc.VerticalTotal);

-       /*_current_refresh_rate = (int)(f0 + 0.5);*/

-

-       crtc.PixelClock  = vclk;

-       crtc.RefreshRate = refresh * 100;

-

-       movedata(_my_ds(), (unsigned)&crtc, _stubinfo->ds_selector, 0, sizeof(crtc));

-

-       r.x.di = 0;

-       r.x.es = _stubinfo->ds_segment;

-       r.x.bx |= 0x0800;

-    }

- }

-

- __dpmi_int(0x10, &r);

- if (r.x.ax != 0x004f) {

-    return !0;

- }

-

- if (p->bpp == 8) {

-    r.x.ax = 0x4f08;

-    r.x.bx = 0x0800;

-    __dpmi_int(0x10, &r);

-    if (r.x.ax == 0x004f) {

-       r.x.ax = 0x4f08;

-       r.h.bl = 0x01;

-       __dpmi_int(0x10, &r);

-       vesa_color_precision = r.h.bh;

-    }

- }

-

- return 0;

-}

-

-

-

-/* Desc: Restores to the mode prior to first call to vesa_entermode.

- *

- * In  : -

- * Out : -

- *

- * Note: -

- */

-static void vesa_restore (void)

-{

- __dpmi_regs r;

-

- if (oldmode != -1) {

-    r.x.ax = 0x4f02;

-    r.x.bx = oldmode;

-    __dpmi_int(0x10, &r);

- }

-}

-

-

-

-/* Desc: set one palette entry

- *

- * In  : color index, R, G, B

- * Out : -

- *

- * Note: uses integer values

- */

-static void vesa_setCI_i (int index, int red, int green, int blue)

-{

-#if 0

- __asm("\n\

-		movw $0x1010, %%ax	\n\

-		movb %1, %%dh		\n\

-		movb %2, %%ch		\n\

-		int  $0x10		\n\

- "::"b"(index), "m"(red), "m"(green), "c"(blue):"%eax", "%edx");

-#else

- outportb(0x03C8, index);

- outportb(0x03C9, red);

- outportb(0x03C9, green);

- outportb(0x03C9, blue);

-#endif

-}

-

-

-

-/* Desc: set one palette entry

- *

- * In  : color index, R, G, B

- * Out : -

- *

- * Note: uses normalized values

- */

-static void vesa_setCI_f (int index, float red, float green, float blue)

-{

- float max = (1 << vesa_color_precision) - 1;

-

- vesa_setCI_i(index, (int)(red * max), (int)(green * max), (int)(blue * max));

-}

-

-

-

-/* Desc: state retrieval

- *

- * In  : parameter name, ptr to storage

- * Out : 0 if request successfully processed

- *

- * Note: -

- */

-static int vesa_get (int pname, int *params)

-{

- switch (pname) {

-        case VL_GET_CI_PREC:

-             params[0] = vesa_color_precision;

-             break;

-        default:

-             return -1;

- }

- return 0;

-}

-

-

-

-/*

- * the driver

- */

-vl_driver VESA = {

-          vesa_init,

-          vesa_entermode,

-          NULL,

-          vesa_setCI_f,

-          vesa_setCI_i,

-          vesa_get,

-          vesa_restore,

-          vesa_fini

-};

+/*
+ * Mesa 3-D graphics library
+ * Version:  4.1
+ * 
+ * Copyright (C) 1999  Brian Paul   All Rights Reserved.
+ * 
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ * 
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/*
+ * DOS/DJGPP device driver v1.3 for Mesa
+ *
+ *  Copyright (C) 2002 - Borca Daniel
+ *  Email : dborca@yahoo.com
+ *  Web   : http://www.geocities.com/dborca
+ */
+
+
+#include <dpmi.h>
+#include <pc.h>
+#include <stdlib.h>
+#include <stubinfo.h>
+#include <sys/exceptn.h>
+#include <sys/segments.h>
+#include <sys/farptr.h>
+#include <sys/movedata.h>
+
+#include "video.h"
+#include "vesa.h"
+
+
+
+static vl_mode modes[128];
+
+static word16 vesa_ver;
+static int banked_selector, linear_selector;
+static int oldmode = -1;
+
+static int vesa_color_precision = 6;
+
+static word16 *vesa_pmcode;
+unsigned int vesa_gran_mask, vesa_gran_shift;
+
+
+
+/*
+ * VESA info
+ */
+#define V_SIGN     0
+#define V_MINOR    4
+#define V_MAJOR    5
+#define V_OEM_OFS  6
+#define V_OEM_SEG  8
+#define V_MODE_OFS 14
+#define V_MODE_SEG 16
+#define V_MEMORY   18
+
+/*
+ * mode info
+ */
+#define M_ATTR     0
+#define M_GRAN     4
+#define M_SCANLEN  16
+#define M_XRES     18
+#define M_YRES     20
+#define M_BPP      25
+#define M_RED      31
+#define M_GREEN    33
+#define M_BLUE     35
+#define M_PHYS_PTR 40
+
+/*
+ * VESA 3.0 CRTC timings structure
+ */
+typedef struct CRTCInfoBlock {
+        unsigned short HorizontalTotal;
+        unsigned short HorizontalSyncStart;
+        unsigned short HorizontalSyncEnd;
+        unsigned short VerticalTotal;
+        unsigned short VerticalSyncStart;
+        unsigned short VerticalSyncEnd;
+        unsigned char  Flags;
+        unsigned long  PixelClock;         /* units of Hz */
+        unsigned short RefreshRate;        /* units of 0.01 Hz */
+        unsigned char  reserved[40];
+} __PACKED__ CRTCInfoBlock;
+
+#define HNEG         (1 << 2)
+#define VNEG         (1 << 3)
+#define DOUBLESCAN   (1 << 0)
+
+
+
+/* Desc: Attempts to detect VESA, check video modes and create selectors.
+ *
+ * In  : -
+ * Out : mode array
+ *
+ * Note: -
+ */
+static vl_mode *vesa_init (void)
+{
+ __dpmi_regs r;
+ word16 *p;
+ vl_mode *q;
+ char vesa_info[512], tmp[512];
+ int maxsize = 0;
+ word32 linearfb = 0;
+
+ if (vesa_ver) {
+    return modes;
+ }
+
+ _farpokel(_stubinfo->ds_selector, 0, 0x32454256);
+ r.x.ax = 0x4f00;
+ r.x.di = 0;
+ r.x.es = _stubinfo->ds_segment;
+ __dpmi_int(0x10, &r);
+ movedata(_stubinfo->ds_selector, 0, _my_ds(), (unsigned)vesa_info, 512);
+ if ((r.x.ax!=0x004f) || ((_32_ vesa_info[V_SIGN])!=0x41534556)) {
+    return NULL;
+ }
+
+ p = (word16 *)(((_16_ vesa_info[V_MODE_SEG])<<4) + (_16_ vesa_info[V_MODE_OFS]));
+ q = modes;
+ do {
+     if ((q->mode=_farpeekw(__djgpp_dos_sel, (unsigned long)(p++)))==0xffff) {
+        break;
+     }
+
+     r.x.ax = 0x4f01;
+     r.x.cx = q->mode;
+     r.x.di = 512;
+     r.x.es = _stubinfo->ds_segment;
+     __dpmi_int(0x10, &r);
+     movedata(_stubinfo->ds_selector, 512, _my_ds(), (unsigned)tmp, 256);
+     switch (tmp[M_BPP]) {
+            case 16:
+                 q->bpp = tmp[M_RED] + tmp[M_GREEN] + tmp[M_BLUE];
+                 break;
+            case 8:
+            case 15:
+            case 24:
+            case 32:
+                 q->bpp = tmp[M_BPP];
+                 break;
+            default:
+                 q->bpp = 0;
+     }
+     if ((r.x.ax==0x004f) && ((tmp[M_ATTR]&0x11)==0x11) && q->bpp) {
+        q->xres = _16_ tmp[M_XRES];
+        q->yres = _16_ tmp[M_YRES];
+        q->scanlen = _16_ tmp[M_SCANLEN];
+        q->gran = (_16_ tmp[M_GRAN])<<10;
+        if (tmp[M_ATTR]&0x80) {
+#if 0
+           *(q+1) = *q++;
+#else
+           vl_mode *q1 = q + 1;
+           *q1 = *q++;
+#endif
+           linearfb = _32_ tmp[M_PHYS_PTR];
+           q->mode |= 0x4000;
+        }
+        if (maxsize<(q->scanlen*q->yres)) {
+           maxsize = q->scanlen*q->yres;
+        }
+        q++;
+     }
+ } while (TRUE);
+
+ if (q==modes) {
+    return NULL;
+ }
+ if (linearfb) {
+    maxsize = ((maxsize+0xfffUL)&~0xfffUL);
+    if (_create_selector(&linear_selector, linearfb, maxsize)) {
+       return NULL;
+    }
+ }
+ if (_create_selector(&banked_selector, 0xa0000, modes[0].gran)) {
+    _remove_selector(&linear_selector);
+    return NULL;
+ }
+
+ for (q=modes; q->mode!=0xffff; q++) {
+     q->sel = (q->mode&0x4000) ? linear_selector : banked_selector;
+ }
+
+ if (vesa_info[V_MAJOR] >= 2) {
+    r.x.ax = 0x4f0a;
+    r.x.bx = 0;
+    __dpmi_int(0x10, &r);
+    if (r.x.ax == 0x004f) {
+       vesa_pmcode = (word16 *)malloc(r.x.cx);
+       movedata(__djgpp_dos_sel, (r.x.es << 4) + r.x.di, _my_ds(), (unsigned)vesa_pmcode, r.x.cx);
+       if (vesa_pmcode[3]) {
+          p = (word16 *)((long)vesa_pmcode + vesa_pmcode[3]);
+          while (*p++ != 0xffff) ;
+       } else {
+          p = NULL;
+       }
+       if (p && (*p != 0xffff)) {
+          free(vesa_pmcode);
+          vesa_pmcode = NULL;
+       } else {
+          vesa_swbank = (void *)((long)vesa_pmcode + vesa_pmcode[0]);
+       }
+    }
+ }
+
+ vesa_ver = _16_ vesa_info[V_MINOR];
+ return modes;
+}
+
+
+
+/* Desc: Frees all resources allocated by VESA init code.
+ *
+ * In  : -
+ * Out : -
+ *
+ * Note: -
+ */
+static void vesa_fini (void)
+{
+ if (vesa_ver) {
+    _remove_selector(&linear_selector);
+    _remove_selector(&banked_selector);
+    if (vesa_pmcode != NULL) {
+       free(vesa_pmcode);
+       vesa_pmcode = NULL;
+    }
+ }
+}
+
+
+
+/* Desc: Uses VESA 3.0 function 0x4F0B to find the closest pixel clock to the requested value.
+ *
+ * In  : mode, clock
+ * Out : desired clock
+ *
+ * Note: -
+ */
+static unsigned long _closest_pixclk (int mode_no, unsigned long vclk)
+{
+ __dpmi_regs r;
+
+ r.x.ax = 0x4F0B;
+ r.h.bl = 0;
+ r.d.ecx = vclk;
+ r.x.dx = mode_no;
+ __dpmi_int(0x10, &r);
+
+ return (r.x.ax==0x004f) ? r.d.ecx : 0;
+}
+
+
+
+/* Desc: Calculates CRTC mode timings.
+ *
+ * In  : crtc block, geometry, adjust
+ * Out :
+ *
+ * Note:
+ */
+static void _crtc_timing (CRTCInfoBlock *crtc, int xres, int yres, int xadjust, int yadjust)
+{
+ int HTotal, VTotal;
+ int HDisp, VDisp;
+ int HSS, VSS;
+ int HSE, VSE;
+ int HSWidth, VSWidth;
+ int SS, SE;
+ int doublescan = FALSE;
+
+ if (yres < 400) {
+    doublescan = TRUE;
+    yres *= 2;
+ }
+
+ HDisp = xres;
+ HTotal = (int)(HDisp * 1.27) & ~0x7;
+ HSWidth = (int)((HTotal - HDisp) / 5) & ~0x7;
+ HSS = HDisp + 16;
+ HSE = HSS + HSWidth;
+ VDisp = yres;
+ VTotal = VDisp * 1.07;
+ VSWidth = (VTotal / 100) + 1;
+ VSS = VDisp + ((int)(VTotal - VDisp) / 5) + 1;
+ VSE = VSS + VSWidth;
+
+ SS = HSS + xadjust;
+ SE = HSE + xadjust;
+
+ if (xadjust < 0) {
+    if (SS < (HDisp + 8)) {
+       SS = HDisp + 8;
+       SE = SS + HSWidth;
+    }
+ } else {
+    if ((HTotal - 24) < SE) {
+       SE = HTotal - 24;
+       SS = SE - HSWidth;
+    }
+ }
+
+ HSS = SS;
+ HSE = SE;
+
+ SS = VSS + yadjust;
+ SE = VSE + yadjust;
+
+ if (yadjust < 0) {
+    if (SS < (VDisp + 3)) {
+       SS = VDisp + 3;
+       SE = SS + VSWidth;
+    }
+ } else {
+    if ((VTotal - 4) < SE) {
+       SE = VTotal - 4;
+       SS = SE - VSWidth;
+    }
+ }
+
+ VSS = SS;
+ VSE = SE;
+
+ crtc->HorizontalTotal     = HTotal;
+ crtc->HorizontalSyncStart = HSS;
+ crtc->HorizontalSyncEnd   = HSE;
+ crtc->VerticalTotal       = VTotal;
+ crtc->VerticalSyncStart   = VSS;
+ crtc->VerticalSyncEnd     = VSE;
+ crtc->Flags               = HNEG | VNEG;
+
+ if (doublescan)
+    crtc->Flags |= DOUBLESCAN;
+}
+
+
+
+/* Desc: Attempts to enter specified video mode.
+ *
+ * In  : ptr to mode structure, refresh rate
+ * Out : 0 if success
+ *
+ * Note: -
+ */
+static int vesa_entermode (vl_mode *p, int refresh)
+{
+ __dpmi_regs r;
+
+ if (p->mode & 0x4000) {
+    VESA.blit = _can_mmx() ? vesa_l_dump_virtual_mmx : vesa_l_dump_virtual;
+ } else {
+    VESA.blit = vesa_b_dump_virtual;
+    { int n; for (vesa_gran_shift=0, n=p->gran; n; vesa_gran_shift++, n>>=1) ; }
+    vesa_gran_mask = (1<<(--vesa_gran_shift)) - 1;
+    if ((unsigned)p->gran != (vesa_gran_mask+1)) {
+       return !0;
+    }
+ }
+
+ if (oldmode == -1) {
+    r.x.ax = 0x4f03;
+    __dpmi_int(0x10, &r);
+    oldmode = r.x.bx;
+ }
+
+ r.x.ax = 0x4f02;
+ r.x.bx = p->mode;
+
+ if (refresh && ((vesa_ver>>8) >= 3)) {
+    /* VESA 3.0 stuff for controlling the refresh rate */
+    CRTCInfoBlock crtc;
+    unsigned long vclk;
+    double f0;
+
+    _crtc_timing(&crtc, p->xres, p->yres, 0, 0);
+
+    vclk = (double)crtc.HorizontalTotal * crtc.VerticalTotal * refresh;
+    vclk = _closest_pixclk(p->mode, vclk);
+
+    if (vclk != 0) {
+       f0 = (double)vclk / (crtc.HorizontalTotal * crtc.VerticalTotal);
+       /*_current_refresh_rate = (int)(f0 + 0.5);*/
+
+       crtc.PixelClock  = vclk;
+       crtc.RefreshRate = refresh * 100;
+
+       movedata(_my_ds(), (unsigned)&crtc, _stubinfo->ds_selector, 0, sizeof(crtc));
+
+       r.x.di = 0;
+       r.x.es = _stubinfo->ds_segment;
+       r.x.bx |= 0x0800;
+    }
+ }
+
+ __dpmi_int(0x10, &r);
+ if (r.x.ax != 0x004f) {
+    return !0;
+ }
+
+ if (p->bpp == 8) {
+    r.x.ax = 0x4f08;
+    r.x.bx = 0x0800;
+    __dpmi_int(0x10, &r);
+    if (r.x.ax == 0x004f) {
+       r.x.ax = 0x4f08;
+       r.h.bl = 0x01;
+       __dpmi_int(0x10, &r);
+       vesa_color_precision = r.h.bh;
+    }
+ }
+
+ return 0;
+}
+
+
+
+/* Desc: Restores to the mode prior to first call to vesa_entermode.
+ *
+ * In  : -
+ * Out : -
+ *
+ * Note: -
+ */
+static void vesa_restore (void)
+{
+ __dpmi_regs r;
+
+ if (oldmode != -1) {
+    r.x.ax = 0x4f02;
+    r.x.bx = oldmode;
+    __dpmi_int(0x10, &r);
+ }
+}
+
+
+
+/* Desc: set one palette entry
+ *
+ * In  : color index, R, G, B
+ * Out : -
+ *
+ * Note: uses integer values
+ */
+static void vesa_setCI_i (int index, int red, int green, int blue)
+{
+#if 0
+ __asm("\n\
+		movw $0x1010, %%ax	\n\
+		movb %1, %%dh		\n\
+		movb %2, %%ch		\n\
+		int  $0x10		\n\
+ "::"b"(index), "m"(red), "m"(green), "c"(blue):"%eax", "%edx");
+#else
+ outportb(0x03C8, index);
+ outportb(0x03C9, red);
+ outportb(0x03C9, green);
+ outportb(0x03C9, blue);
+#endif
+}
+
+
+
+/* Desc: set one palette entry
+ *
+ * In  : color index, R, G, B
+ * Out : -
+ *
+ * Note: uses normalized values
+ */
+static void vesa_setCI_f (int index, float red, float green, float blue)
+{
+ float max = (1 << vesa_color_precision) - 1;
+
+ vesa_setCI_i(index, (int)(red * max), (int)(green * max), (int)(blue * max));
+}
+
+
+
+/* Desc: state retrieval
+ *
+ * In  : parameter name, ptr to storage
+ * Out : 0 if request successfully processed
+ *
+ * Note: -
+ */
+static int vesa_get (int pname, int *params)
+{
+ switch (pname) {
+        case VL_GET_CI_PREC:
+             params[0] = vesa_color_precision;
+             break;
+        default:
+             return -1;
+ }
+ return 0;
+}
+
+
+
+/*
+ * the driver
+ */
+vl_driver VESA = {
+          vesa_init,
+          vesa_entermode,
+          NULL,
+          vesa_setCI_f,
+          vesa_setCI_i,
+          vesa_get,
+          vesa_restore,
+          vesa_fini
+};
diff --git a/src/mesa/drivers/dos/vesa.h b/src/mesa/drivers/dos/vesa.h
index 030c816f08..9287697c37 100644
--- a/src/mesa/drivers/dos/vesa.h
+++ b/src/mesa/drivers/dos/vesa.h
@@ -1,47 +1,47 @@
-/*

- * Mesa 3-D graphics library

- * Version:  4.0

- * 

- * Copyright (C) 1999  Brian Paul   All Rights Reserved.

- * 

- * Permission is hereby granted, free of charge, to any person obtaining a

- * copy of this software and associated documentation files (the "Software"),

- * to deal in the Software without restriction, including without limitation

- * the rights to use, copy, modify, merge, publish, distribute, sublicense,

- * and/or sell copies of the Software, and to permit persons to whom the

- * Software is furnished to do so, subject to the following conditions:

- * 

- * The above copyright notice and this permission notice shall be included

- * in all copies or substantial portions of the Software.

- * 

- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS

- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL

- * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN

- * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN

- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

- */

-

-/*

- * DOS/DJGPP device driver v1.3 for Mesa

- *

- *  Copyright (C) 2002 - Borca Daniel

- *  Email : dborca@yahoo.com

- *  Web   : http://www.geocities.com/dborca

- */

-

-

-#ifndef VESA_H_included

-#define VESA_H_included

-

-#include "internal.h"

-

-extern void *vesa_swbank;

-

-extern void vesa_b_dump_virtual (void);

-extern void vesa_l_dump_virtual (void);

-extern void vesa_l_dump_virtual_mmx (void);

-

-extern vl_driver VESA;

-

-#endif

+/*
+ * Mesa 3-D graphics library
+ * Version:  4.0
+ * 
+ * Copyright (C) 1999  Brian Paul   All Rights Reserved.
+ * 
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ * 
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/*
+ * DOS/DJGPP device driver v1.3 for Mesa
+ *
+ *  Copyright (C) 2002 - Borca Daniel
+ *  Email : dborca@yahoo.com
+ *  Web   : http://www.geocities.com/dborca
+ */
+
+
+#ifndef VESA_H_included
+#define VESA_H_included
+
+#include "internal.h"
+
+extern void *vesa_swbank;
+
+extern void vesa_b_dump_virtual (void);
+extern void vesa_l_dump_virtual (void);
+extern void vesa_l_dump_virtual_mmx (void);
+
+extern vl_driver VESA;
+
+#endif
diff --git a/src/mesa/drivers/dos/vga.c b/src/mesa/drivers/dos/vga.c
index 4fe8773243..9de32f0cd5 100644
--- a/src/mesa/drivers/dos/vga.c
+++ b/src/mesa/drivers/dos/vga.c
@@ -1,235 +1,235 @@
-/*

- * Mesa 3-D graphics library

- * Version:  4.1

- * 

- * Copyright (C) 1999  Brian Paul   All Rights Reserved.

- * 

- * Permission is hereby granted, free of charge, to any person obtaining a

- * copy of this software and associated documentation files (the "Software"),

- * to deal in the Software without restriction, including without limitation

- * the rights to use, copy, modify, merge, publish, distribute, sublicense,

- * and/or sell copies of the Software, and to permit persons to whom the

- * Software is furnished to do so, subject to the following conditions:

- * 

- * The above copyright notice and this permission notice shall be included

- * in all copies or substantial portions of the Software.

- * 

- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS

- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL

- * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN

- * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN

- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

- */

-

-/*

- * DOS/DJGPP device driver v1.3 for Mesa

- *

- *  Copyright (C) 2002 - Borca Daniel

- *  Email : dborca@yahoo.com

- *  Web   : http://www.geocities.com/dborca

- */

-

-

-#include <pc.h>

-#include <stdlib.h>

-

-#include "video.h"

-#include "vga.h"

-

-

-

-static vl_mode modes[] = {

-       {0x13 | 0x4000, 320, 200, 320, 8, -1, 320*200},

-       {0xffff, -1, -1, -1, -1, -1, -1}

-};

-

-static word16 vga_ver;

-static int linear_selector;

-static int oldmode = -1;

-

-#define vga_color_precision 6

-

-

-

-/* Desc: Attempts to detect VGA, check video modes and create selectors.

- *

- * In  : -

- * Out : mode array

- *

- * Note: -

- */

-static vl_mode *vga_init (void)

-{

- int rv = 0;

-

- if (vga_ver) {

-    return modes;

- }

-

- __asm("\n\

-		movw	$0x1a00, %%ax	\n\

-		int	$0x10		\n\

-		cmpb	$0x1a, %%al	\n\

-		jne	0f		\n\

-		cmpb	$0x07, %%bl	\n\

-		jb	0f		\n\

-		andl	$0xff, %%ebx	\n\

-		movl	%%ebx, %0	\n\

- 0:":"=g"(rv)::"%eax", "%ebx");

- if (rv == 0) {

-    return NULL;

- }

-

- if (_create_selector(&linear_selector, 0xa0000, 0x10000)) {

-    return NULL;

- }

-

- modes[0].sel = linear_selector;

-

- vga_ver = rv;

- return modes;

-}

-

-

-

-/* Desc: Frees all resources allocated by VGA init code.

- *

- * In  : -

- * Out : -

- *

- * Note: -

- */

-static void vga_fini (void)

-{

- if (vga_ver) {

-    _remove_selector(&linear_selector);

- }

-}

-

-

-

-/* Desc: Attempts to enter specified video mode.

- *

- * In  : ptr to mode structure, refresh rate

- * Out : 0 if success

- *

- * Note: -

- */

-static int vga_entermode (vl_mode *p, int refresh)

-{

- if (!(p->mode & 0x4000)) {

-    return -1;

- }

- VGA.blit = _can_mmx() ? vesa_l_dump_virtual_mmx : vesa_l_dump_virtual;

-

- if (oldmode == -1) {

-    __asm("\n\

-		movb	$0x0f, %%ah	\n\

-		int	$0x10		\n\

-		andl	$0xff, %%eax	\n\

-		movl	%%eax, %0	\n\

-    ":"=g"(oldmode)::"%eax", "%ebx");

- }

-

- __asm("int $0x10"::"a"(p->mode&0xff));

-

- return 0;

-

- (void)refresh; /* silence compiler warning */

-}

-

-

-

-/* Desc: Restores to the mode prior to first call to vga_entermode.

- *

- * In  : -

- * Out : -

- *

- * Note: -

- */

-static void vga_restore (void)

-{

- if (oldmode != -1) {

-    __asm("int $0x10"::"a"(oldmode));

- }

-}

-

-

-

-/* Desc: set one palette entry

- *

- * In  : color index, R, G, B

- * Out : -

- *

- * Note: uses integer values

- */

-static void vga_setCI_i (int index, int red, int green, int blue)

-{

-#if 0

- __asm("\n\

-		movw $0x1010, %%ax	\n\

-		movb %1, %%dh		\n\

-		movb %2, %%ch		\n\

-		int  $0x10		\n\

- "::"b"(index), "m"(red), "m"(green), "c"(blue):"%eax", "%edx");

-#else

- outportb(0x03C8, index);

- outportb(0x03C9, red);

- outportb(0x03C9, green);

- outportb(0x03C9, blue);

-#endif

-}

-

-

-

-/* Desc: set one palette entry

- *

- * In  : color index, R, G, B

- * Out : -

- *

- * Note: uses normalized values

- */

-static void vga_setCI_f (int index, float red, float green, float blue)

-{

- float max = (1 << vga_color_precision) - 1;

-

- vga_setCI_i(index, (int)(red * max), (int)(green * max), (int)(blue * max));

-}

-

-

-

-/* Desc: state retrieval

- *

- * In  : parameter name, ptr to storage

- * Out : 0 if request successfully processed

- *

- * Note: -

- */

-static int vga_get (int pname, int *params)

-{

- switch (pname) {

-        case VL_GET_CI_PREC:

-             params[0] = vga_color_precision;

-             break;

-        default:

-             return -1;

- }

- return 0;

-}

-

-

-

-/*

- * the driver

- */

-vl_driver VGA = {

-          vga_init,

-          vga_entermode,

-          NULL,

-          vga_setCI_f,

-          vga_setCI_i,

-          vga_get,

-          vga_restore,

-          vga_fini

-};

+/*
+ * Mesa 3-D graphics library
+ * Version:  4.1
+ * 
+ * Copyright (C) 1999  Brian Paul   All Rights Reserved.
+ * 
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ * 
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/*
+ * DOS/DJGPP device driver v1.3 for Mesa
+ *
+ *  Copyright (C) 2002 - Borca Daniel
+ *  Email : dborca@yahoo.com
+ *  Web   : http://www.geocities.com/dborca
+ */
+
+
+#include <pc.h>
+#include <stdlib.h>
+
+#include "video.h"
+#include "vga.h"
+
+
+
+static vl_mode modes[] = {
+       {0x13 | 0x4000, 320, 200, 320, 8, -1, 320*200},
+       {0xffff, -1, -1, -1, -1, -1, -1}
+};
+
+static word16 vga_ver;
+static int linear_selector;
+static int oldmode = -1;
+
+#define vga_color_precision 6
+
+
+
+/* Desc: Attempts to detect VGA, check video modes and create selectors.
+ *
+ * In  : -
+ * Out : mode array
+ *
+ * Note: -
+ */
+static vl_mode *vga_init (void)
+{
+ int rv = 0;
+
+ if (vga_ver) {
+    return modes;
+ }
+
+ __asm("\n\
+		movw	$0x1a00, %%ax	\n\
+		int	$0x10		\n\
+		cmpb	$0x1a, %%al	\n\
+		jne	0f		\n\
+		cmpb	$0x07, %%bl	\n\
+		jb	0f		\n\
+		andl	$0xff, %%ebx	\n\
+		movl	%%ebx, %0	\n\
+ 0:":"=g"(rv)::"%eax", "%ebx");
+ if (rv == 0) {
+    return NULL;
+ }
+
+ if (_create_selector(&linear_selector, 0xa0000, 0x10000)) {
+    return NULL;
+ }
+
+ modes[0].sel = linear_selector;
+
+ vga_ver = rv;
+ return modes;
+}
+
+
+
+/* Desc: Frees all resources allocated by VGA init code.
+ *
+ * In  : -
+ * Out : -
+ *
+ * Note: -
+ */
+static void vga_fini (void)
+{
+ if (vga_ver) {
+    _remove_selector(&linear_selector);
+ }
+}
+
+
+
+/* Desc: Attempts to enter specified video mode.
+ *
+ * In  : ptr to mode structure, refresh rate
+ * Out : 0 if success
+ *
+ * Note: -
+ */
+static int vga_entermode (vl_mode *p, int refresh)
+{
+ if (!(p->mode & 0x4000)) {
+    return -1;
+ }
+ VGA.blit = _can_mmx() ? vesa_l_dump_virtual_mmx : vesa_l_dump_virtual;
+
+ if (oldmode == -1) {
+    __asm("\n\
+		movb	$0x0f, %%ah	\n\
+		int	$0x10		\n\
+		andl	$0xff, %%eax	\n\
+		movl	%%eax, %0	\n\
+    ":"=g"(oldmode)::"%eax", "%ebx");
+ }
+
+ __asm("int $0x10"::"a"(p->mode&0xff));
+
+ return 0;
+
+ (void)refresh; /* silence compiler warning */
+}
+
+
+
+/* Desc: Restores to the mode prior to first call to vga_entermode.
+ *
+ * In  : -
+ * Out : -
+ *
+ * Note: -
+ */
+static void vga_restore (void)
+{
+ if (oldmode != -1) {
+    __asm("int $0x10"::"a"(oldmode));
+ }
+}
+
+
+
+/* Desc: set one palette entry
+ *
+ * In  : color index, R, G, B
+ * Out : -
+ *
+ * Note: uses integer values
+ */
+static void vga_setCI_i (int index, int red, int green, int blue)
+{
+#if 0
+ __asm("\n\
+		movw $0x1010, %%ax	\n\
+		movb %1, %%dh		\n\
+		movb %2, %%ch		\n\
+		int  $0x10		\n\
+ "::"b"(index), "m"(red), "m"(green), "c"(blue):"%eax", "%edx");
+#else
+ outportb(0x03C8, index);
+ outportb(0x03C9, red);
+ outportb(0x03C9, green);
+ outportb(0x03C9, blue);
+#endif
+}
+
+
+
+/* Desc: set one palette entry
+ *
+ * In  : color index, R, G, B
+ * Out : -
+ *
+ * Note: uses normalized values
+ */
+static void vga_setCI_f (int index, float red, float green, float blue)
+{
+ float max = (1 << vga_color_precision) - 1;
+
+ vga_setCI_i(index, (int)(red * max), (int)(green * max), (int)(blue * max));
+}
+
+
+
+/* Desc: state retrieval
+ *
+ * In  : parameter name, ptr to storage
+ * Out : 0 if request successfully processed
+ *
+ * Note: -
+ */
+static int vga_get (int pname, int *params)
+{
+ switch (pname) {
+        case VL_GET_CI_PREC:
+             params[0] = vga_color_precision;
+             break;
+        default:
+             return -1;
+ }
+ return 0;
+}
+
+
+
+/*
+ * the driver
+ */
+vl_driver VGA = {
+          vga_init,
+          vga_entermode,
+          NULL,
+          vga_setCI_f,
+          vga_setCI_i,
+          vga_get,
+          vga_restore,
+          vga_fini
+};
diff --git a/src/mesa/drivers/dos/vga.h b/src/mesa/drivers/dos/vga.h
index f1bc62bbe7..aeb8faddae 100644
--- a/src/mesa/drivers/dos/vga.h
+++ b/src/mesa/drivers/dos/vga.h
@@ -1,42 +1,42 @@
-/*

- * Mesa 3-D graphics library

- * Version:  4.0

- * 

- * Copyright (C) 1999  Brian Paul   All Rights Reserved.

- * 

- * Permission is hereby granted, free of charge, to any person obtaining a

- * copy of this software and associated documentation files (the "Software"),

- * to deal in the Software without restriction, including without limitation

- * the rights to use, copy, modify, merge, publish, distribute, sublicense,

- * and/or sell copies of the Software, and to permit persons to whom the

- * Software is furnished to do so, subject to the following conditions:

- * 

- * The above copyright notice and this permission notice shall be included

- * in all copies or substantial portions of the Software.

- * 

- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS

- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL

- * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN

- * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN

- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

- */

-

-/*

- * DOS/DJGPP device driver v1.3 for Mesa

- *

- *  Copyright (C) 2002 - Borca Daniel

- *  Email : dborca@yahoo.com

- *  Web   : http://www.geocities.com/dborca

- */

-

-

-#ifndef VGA_H_included

-#define VGA_H_included

-

-#include "internal.h"

-#include "vesa.h"

-

-extern vl_driver VGA;

-

-#endif

+/*
+ * Mesa 3-D graphics library
+ * Version:  4.0
+ * 
+ * Copyright (C) 1999  Brian Paul   All Rights Reserved.
+ * 
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ * 
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/*
+ * DOS/DJGPP device driver v1.3 for Mesa
+ *
+ *  Copyright (C) 2002 - Borca Daniel
+ *  Email : dborca@yahoo.com
+ *  Web   : http://www.geocities.com/dborca
+ */
+
+
+#ifndef VGA_H_included
+#define VGA_H_included
+
+#include "internal.h"
+#include "vesa.h"
+
+extern vl_driver VGA;
+
+#endif
diff --git a/src/mesa/drivers/dos/video.c b/src/mesa/drivers/dos/video.c
index 297c9d5662..a2524e052c 100644
--- a/src/mesa/drivers/dos/video.c
+++ b/src/mesa/drivers/dos/video.c
@@ -1,525 +1,525 @@
-/*

- * Mesa 3-D graphics library

- * Version:  4.0

- * 

- * Copyright (C) 1999  Brian Paul   All Rights Reserved.

- * 

- * Permission is hereby granted, free of charge, to any person obtaining a

- * copy of this software and associated documentation files (the "Software"),

- * to deal in the Software without restriction, including without limitation

- * the rights to use, copy, modify, merge, publish, distribute, sublicense,

- * and/or sell copies of the Software, and to permit persons to whom the

- * Software is furnished to do so, subject to the following conditions:

- * 

- * The above copyright notice and this permission notice shall be included

- * in all copies or substantial portions of the Software.

- * 

- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS

- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL

- * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN

- * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN

- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

- */

-

-/*

- * DOS/DJGPP device driver v1.3 for Mesa

- *

- *  Copyright (C) 2002 - Borca Daniel

- *  Email : dborca@yahoo.com

- *  Web   : http://www.geocities.com/dborca

- *

- * Thanks to CrazyPyro (Neil Funk) for FakeColor

- */

-

-

-#include <stdlib.h>

-

-#include "internal.h"

-#include "vesa.h"

-#include "vga.h"

-#include "video.h"

-

-

-

-static vl_driver *drv;

-/* based upon mode specific data: valid entire session */

-int vl_video_selector;

-static vl_mode *video_mode;

-static int video_scanlen, video_bypp;

-/* valid until next buffer */

-void *vl_current_draw_buffer, *vl_current_read_buffer;

-int vl_current_stride, vl_current_width, vl_current_height, vl_current_bytes;

-int vl_current_offset, vl_current_delta;

-

-

-

-/* lookup table for scaling 5 bit colors up to 8 bits */

-static int _rgb_scale_5[32] = {

-   0,   8,   16,  25,  33,  41,  49,  58,

-   66,  74,  82,  90,  99,  107, 115, 123,

-   132, 140, 148, 156, 165, 173, 181, 189,

-   197, 206, 214, 222, 230, 239, 247, 255

-};

-

-/* lookup table for scaling 6 bit colors up to 8 bits */

-static int _rgb_scale_6[64] = {

-   0,   4,   8,   12,  16,  20,  24,  28,

-   32,  36,  40,  45,  49,  53,  57,  61,

-   65,  69,  73,  77,  81,  85,  89,  93,

-   97,  101, 105, 109, 113, 117, 121, 125,

-   130, 134, 138, 142, 146, 150, 154, 158,

-   162, 166, 170, 174, 178, 182, 186, 190,

-   194, 198, 202, 206, 210, 215, 219, 223,

-   227, 231, 235, 239, 243, 247, 251, 255

-};

-

-/* FakeColor data */

-#define R_CNT 6

-#define G_CNT 6

-#define B_CNT 6

-

-#define R_BIAS 7

-#define G_BIAS 7

-#define B_BIAS 7

-

-static word32 VGAPalette[256];

-static word8 array_r[256];

-static word8 array_g[256];

-static word8 array_b[256];

-

-

-

-int (*vl_mixfix) (fixed r, fixed g, fixed b);

-int (*vl_mixrgb) (const unsigned char rgb[]);

-int (*vl_mixrgba) (const unsigned char rgba[]);

-void (*vl_getrgba) (unsigned int offset, unsigned char rgba[4]);

-int (*vl_getpixel) (unsigned int offset);

-void (*vl_clear) (int color);

-void (*vl_rect) (int x, int y, int width, int height, int color);

-void (*vl_flip) (void);

-void (*vl_putpixel) (unsigned int offset, int color);

-

-

-

-/* Desc: color composition (w/o ALPHA)

- *

- * In  : R, G, B

- * Out : color

- *

- * Note: -

- */

-static int vl_mixfix8fake (fixed r, fixed g, fixed b)

-{

- return array_b[b>>FIXED_SHIFT]*G_CNT*R_CNT

-      + array_g[g>>FIXED_SHIFT]*R_CNT

-      + array_r[r>>FIXED_SHIFT];

-}

-#define vl_mixfix8 vl_mixfix8fake

-static int vl_mixfix15 (fixed r, fixed g, fixed b)

-{

- return ((r>>(3+FIXED_SHIFT))<<10)

-       |((g>>(3+FIXED_SHIFT))<<5)

-       |(b>>(3+FIXED_SHIFT));

-}

-static int vl_mixfix16 (fixed r, fixed g, fixed b)

-{

- return ((r>>(3+FIXED_SHIFT))<<11)

-       |((g>>(2+FIXED_SHIFT))<<5)

-       |(b>>(3+FIXED_SHIFT));

-}

-#define vl_mixfix24 vl_mixfix32

-static int vl_mixfix32 (fixed r, fixed g, fixed b)

-{

- return ((r>>FIXED_SHIFT)<<16)

-       |((g>>FIXED_SHIFT)<<8)

-       |(b>>FIXED_SHIFT);

-}

-

-

-

-/* Desc: color composition (w/ ALPHA)

- *

- * In  : array of integers (R, G, B, A)

- * Out : color

- *

- * Note: -

- */

-#define vl_mixrgba8 vl_mixrgb8fake

-#define vl_mixrgba15 vl_mixrgb15

-#define vl_mixrgba16 vl_mixrgb16

-#define vl_mixrgba24 vl_mixrgb24

-static int vl_mixrgba32 (const unsigned char rgba[])

-{

- return (rgba[3]<<24)|(rgba[0]<<16)|(rgba[1]<<8)|(rgba[2]);

-}

-

-

-

-/* Desc: color composition (w/o ALPHA)

- *

- * In  : array of integers (R, G, B)

- * Out : color

- *

- * Note: -

- */

-static int vl_mixrgb8fake (const unsigned char rgba[])

-{

- return array_b[rgba[2]]*G_CNT*R_CNT

-      + array_g[rgba[1]]*R_CNT

-      + array_r[rgba[0]];

-}

-#define vl_mixrgb8 vl_mixrgb8fake

-static int vl_mixrgb15 (const unsigned char rgb[])

-{

- return ((rgb[0]>>3)<<10)|((rgb[1]>>3)<<5)|(rgb[2]>>3);

-}

-static int vl_mixrgb16 (const unsigned char rgb[])

-{

- return ((rgb[0]>>3)<<11)|((rgb[1]>>2)<<5)|(rgb[2]>>3);

-}

-#define vl_mixrgb24 vl_mixrgb32

-static int vl_mixrgb32 (const unsigned char rgb[])

-{

- return (rgb[0]<<16)|(rgb[1]<<8)|(rgb[2]);

-}

-

-

-

-/* Desc: color decomposition

- *

- * In  : pixel offset, array of integers to hold color components (R, G, B, A)

- * Out : -

- *

- * Note: uses current read buffer

- */

-static void v_getrgba8fake6 (unsigned int offset, unsigned char rgba[])

-{

- word32 c = VGAPalette[((word8 *)vl_current_read_buffer)[offset]];

- rgba[0] = _rgb_scale_6[(c >> 16) & 0x3F];

- rgba[1] = _rgb_scale_6[(c >> 8) & 0x3F];

- rgba[2] = _rgb_scale_6[c & 0x3F];

- rgba[3] = c >> 24;

-}

-static void v_getrgba8fake8 (unsigned int offset, unsigned char rgba[])

-{

- word32 c = VGAPalette[((word8 *)vl_current_read_buffer)[offset]];

- rgba[0] = c >> 16;

- rgba[1] = c >> 8;

- rgba[2] = c;

- rgba[3] = c >> 24;

-}

-#define v_getrgba8 v_getrgba8fake6

-static void v_getrgba15 (unsigned int offset, unsigned char rgba[4])

-{

- word32 c = ((word16 *)vl_current_read_buffer)[offset];

- rgba[0] = _rgb_scale_5[(c >> 10) & 0x1F];

- rgba[1] = _rgb_scale_5[(c >> 5) & 0x1F];

- rgba[2] = _rgb_scale_5[c & 0x1F];

- rgba[3] = 255;

-}

-static void v_getrgba16 (unsigned int offset, unsigned char rgba[4])

-{

- word32 c = ((word16 *)vl_current_read_buffer)[offset];

- rgba[0] = _rgb_scale_5[(c >> 11) & 0x1F];

- rgba[1] = _rgb_scale_6[(c >> 5) & 0x3F];

- rgba[2] = _rgb_scale_5[c & 0x1F];

- rgba[3] = 255;

-}

-static void v_getrgba24 (unsigned int offset, unsigned char rgba[4])

-{

- word32 c = *(word32 *)((long)vl_current_read_buffer+offset*3);

- rgba[0] = c >> 16;

- rgba[1] = c >> 8;

- rgba[2] = c;

- rgba[3] = 255;

-}

-static void v_getrgba32 (unsigned int offset, unsigned char rgba[4])

-{

- word32 c = ((word32 *)vl_current_read_buffer)[offset];

- rgba[0] = c >> 16;

- rgba[1] = c >> 8;

- rgba[2] = c; 

- rgba[3] = c >> 24;

-}

-

-

-

-/* Desc: pixel retrieval

- *

- * In  : pixel offset

- * Out : pixel value

- *

- * Note: uses current read buffer

- */

-static int v_getpixel8 (unsigned int offset)

-{

- return ((word8 *)vl_current_read_buffer)[offset];

-}

-#define v_getpixel15 v_getpixel16

-static int v_getpixel16 (unsigned int offset)

-{

- return ((word16 *)vl_current_read_buffer)[offset];

-}

-static int v_getpixel24 (unsigned int offset)

-{

- return *(word32 *)((long)vl_current_read_buffer+offset*3);

-}

-static int v_getpixel32 (unsigned int offset)

-{

- return ((word32 *)vl_current_read_buffer)[offset];

-}

-

-

-

-/* Desc: set one palette entry

- *

- * In  : index, R, G, B

- * Out : -

- *

- * Note: color components are in range [0.0 .. 1.0]

- */

-void vl_setCI (int index, float red, float green, float blue)

-{

- drv->setCI_f(index, red, green, blue);

-}

-

-

-

-/* Desc: set one palette entry

- *

- * In  : color, R, G, B

- * Out : -

- *

- * Note: -

- */

-static void fake_setcolor (int c, int r, int g, int b)

-{

- VGAPalette[c] = 0xff000000 | (r<<16) | (g<<8) | b;

-

- drv->setCI_i(c, r, g, b);

-}

-

-

-

-/* Desc: build FakeColor palette

- *

- * In  : CI precision in bits

- * Out : -

- *

- * Note: -

- */

-static void fake_buildpalette (int bits)

-{

- double c_r, c_g, c_b;

- int r, g, b, color = 0;

-

- double max = (1 << bits) - 1;

-

- for (b=0; b<B_CNT; ++b) {

-     for (g=0; g<G_CNT; ++g) {

-         for (r=0; r<R_CNT; ++r) {

-             c_r = 0.5 + (double)r*(max-R_BIAS)/(R_CNT-1.) + R_BIAS;

-             c_g = 0.5 + (double)g*(max-G_BIAS)/(G_CNT-1.) + G_BIAS;

-             c_b = 0.5 + (double)b*(max-B_BIAS)/(B_CNT-1.) + B_BIAS;

-             fake_setcolor(color++, (int)c_r, (int)c_g, (int)c_b);

-         }

-     }

- }

-

- for (color=0; color<256; color++) {

-     c_r = (double)color*R_CNT/256.;

-     c_g = (double)color*G_CNT/256.;

-     c_b = (double)color*B_CNT/256.;

-     array_r[color] = (int)c_r;

-     array_g[color] = (int)c_g;

-     array_b[color] = (int)c_b;

- }

-}

-

-

-

-/* Desc: sync buffer with video hardware

- *

- * In  : ptr to old buffer, position, size

- * Out : 0 if success

- *

- * Note: -

- */

-int vl_sync_buffer (void **buffer, int x, int y, int width, int height)

-{

- if ((width & 7) || (x < 0) || (y < 0) || (x+width > video_mode->xres) || (y+height > video_mode->yres)) {

-    return -1;

- } else {

-    void *newbuf = *buffer;

-

-    if ((newbuf == NULL) || (vl_current_width != width) || (vl_current_height != height)) {

-       newbuf = realloc(newbuf, width * height * video_bypp);

-    }

-

-    if (newbuf == NULL) {

-       return -2;

-    }

-

-    vl_current_width = width;

-    vl_current_height = height;

-    vl_current_stride = vl_current_width * video_bypp;

-    vl_current_bytes = vl_current_stride * height;

-

-    vl_current_offset = video_scanlen * y + video_bypp * x;

-    vl_current_delta = video_scanlen - vl_current_stride;

-

-    vl_current_draw_buffer = vl_current_read_buffer = *buffer = newbuf;

-    return 0;

- }

-}

-

-

-

-/* Desc: state retrieval

- *

- * In  : name, storage

- * Out : -

- *

- * Note: -

- */

-int vl_get (int pname, int *params)

-{

- switch (pname) {

-        case VL_GET_SCREEN_SIZE:

-             params[0] = video_mode->xres;

-             params[1] = video_mode->yres;

-             break;

-        default:

-             return drv->get(pname, params);

- }

- return 0;

-}

-

-

-

-/* Desc: setup mode

- *

- * In  : ptr to mode definition

- * Out : 0 if success

- *

- * Note: -

- */

-static int vl_setup_mode (vl_mode *p)

-{

- if (p == NULL) {

-    return -1;

- }

-

-#define INITPTR(bpp) \

-        vl_putpixel = v_putpixel##bpp; \

-        vl_getrgba = v_getrgba##bpp;   \

-        vl_getpixel = v_getpixel##bpp; \

-        vl_rect = v_rect##bpp;         \

-        vl_mixfix = vl_mixfix##bpp;    \

-        vl_mixrgb = vl_mixrgb##bpp;    \

-        vl_mixrgba = vl_mixrgba##bpp;  \

-        vl_clear = _can_mmx() ? v_clear##bpp##_mmx : v_clear##bpp

-        

- switch (p->bpp) {

-        case 8:

-             INITPTR(8);

-             break;

-        case 15:

-             INITPTR(15);

-             break;

-        case 16:

-             INITPTR(16);

-             break;

-        case 24:

-             INITPTR(24);

-             break;

-        case 32:

-             INITPTR(32);

-             break;

-        default:

-             return -1;

- }

-

-#undef INITPTR

-

- video_mode = p;

- video_bypp = (p->bpp+7)/8;

- video_scanlen = p->scanlen;

- vl_video_selector = p->sel;

-

- return 0;

-}

-

-

-

-/* Desc: restore to the mode prior to first call to `vl_video_init'.

- *

- * In  : -

- * Out : -

- *

- * Note: -

- */

-void vl_video_exit (void)

-{

- drv->restore();

- drv->fini();

-}

-

-

-

-/* Desc: enter mode

- *

- * In  : xres, yres, bits/pixel, RGB, refresh rate

- * Out : pixel width in bits if success

- *

- * Note: -

- */

-int vl_video_init (int width, int height, int bpp, int rgb, int refresh)

-{

- int fake;

- vl_mode *p, *q;

- unsigned int min;

-

- fake = 0;

- if (!rgb) {

-    bpp = 8;

- } else if (bpp == 8) {

-    fake = 1;

- }

-

- /* initialize hardware */

- drv = &VESA;

- if ((q=drv->init()) == NULL) {

-    drv = &VGA;

-    if ((q=drv->init()) == NULL) {

-       return 0;

-    }

- }

-

- /* search for a mode that fits our request */

- for (min=-1, p=NULL; q->mode!=0xffff; q++) {

-     if ((q->xres>=width) && (q->yres>=height) && (q->bpp==bpp)) {

-        if (min>=(unsigned)(q->xres*q->yres)) {

-           min = q->xres*q->yres;

-           p = q;

-        }

-     }

- }

-

- /* setup and enter mode */

- if ((vl_setup_mode(p) == 0) && (drv->entermode(p, refresh) == 0)) {

-    vl_flip = drv->blit;

-    if (fake) {

-       drv->get(VL_GET_CI_PREC, (int *)(&min));

-       fake_buildpalette(min);

-       if (min == 8) {

-          vl_getrgba = v_getrgba8fake8;

-       }

-    }

-    return bpp;

- }

-

- /* abort */

- return 0;

-}

+/*
+ * Mesa 3-D graphics library
+ * Version:  4.0
+ * 
+ * Copyright (C) 1999  Brian Paul   All Rights Reserved.
+ * 
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ * 
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/*
+ * DOS/DJGPP device driver v1.3 for Mesa
+ *
+ *  Copyright (C) 2002 - Borca Daniel
+ *  Email : dborca@yahoo.com
+ *  Web   : http://www.geocities.com/dborca
+ *
+ * Thanks to CrazyPyro (Neil Funk) for FakeColor
+ */
+
+
+#include <stdlib.h>
+
+#include "internal.h"
+#include "vesa.h"
+#include "vga.h"
+#include "video.h"
+
+
+
+static vl_driver *drv;
+/* based upon mode specific data: valid entire session */
+int vl_video_selector;
+static vl_mode *video_mode;
+static int video_scanlen, video_bypp;
+/* valid until next buffer */
+void *vl_current_draw_buffer, *vl_current_read_buffer;
+int vl_current_stride, vl_current_width, vl_current_height, vl_current_bytes;
+int vl_current_offset, vl_current_delta;
+
+
+
+/* lookup table for scaling 5 bit colors up to 8 bits */
+static int _rgb_scale_5[32] = {
+   0,   8,   16,  25,  33,  41,  49,  58,
+   66,  74,  82,  90,  99,  107, 115, 123,
+   132, 140, 148, 156, 165, 173, 181, 189,
+   197, 206, 214, 222, 230, 239, 247, 255
+};
+
+/* lookup table for scaling 6 bit colors up to 8 bits */
+static int _rgb_scale_6[64] = {
+   0,   4,   8,   12,  16,  20,  24,  28,
+   32,  36,  40,  45,  49,  53,  57,  61,
+   65,  69,  73,  77,  81,  85,  89,  93,
+   97,  101, 105, 109, 113, 117, 121, 125,
+   130, 134, 138, 142, 146, 150, 154, 158,
+   162, 166, 170, 174, 178, 182, 186, 190,
+   194, 198, 202, 206, 210, 215, 219, 223,
+   227, 231, 235, 239, 243, 247, 251, 255
+};
+
+/* FakeColor data */
+#define R_CNT 6
+#define G_CNT 6
+#define B_CNT 6
+
+#define R_BIAS 7
+#define G_BIAS 7
+#define B_BIAS 7
+
+static word32 VGAPalette[256];
+static word8 array_r[256];
+static word8 array_g[256];
+static word8 array_b[256];
+
+
+
+int (*vl_mixfix) (fixed r, fixed g, fixed b);
+int (*vl_mixrgb) (const unsigned char rgb[]);
+int (*vl_mixrgba) (const unsigned char rgba[]);
+void (*vl_getrgba) (unsigned int offset, unsigned char rgba[4]);
+int (*vl_getpixel) (unsigned int offset);
+void (*vl_clear) (int color);
+void (*vl_rect) (int x, int y, int width, int height, int color);
+void (*vl_flip) (void);
+void (*vl_putpixel) (unsigned int offset, int color);
+
+
+
+/* Desc: color composition (w/o ALPHA)
+ *
+ * In  : R, G, B
+ * Out : color
+ *
+ * Note: -
+ */
+static int vl_mixfix8fake (fixed r, fixed g, fixed b)
+{
+ return array_b[b>>FIXED_SHIFT]*G_CNT*R_CNT
+      + array_g[g>>FIXED_SHIFT]*R_CNT
+      + array_r[r>>FIXED_SHIFT];
+}
+#define vl_mixfix8 vl_mixfix8fake
+static int vl_mixfix15 (fixed r, fixed g, fixed b)
+{
+ return ((r>>(3+FIXED_SHIFT))<<10)
+       |((g>>(3+FIXED_SHIFT))<<5)
+       |(b>>(3+FIXED_SHIFT));
+}
+static int vl_mixfix16 (fixed r, fixed g, fixed b)
+{
+ return ((r>>(3+FIXED_SHIFT))<<11)
+       |((g>>(2+FIXED_SHIFT))<<5)
+       |(b>>(3+FIXED_SHIFT));
+}
+#define vl_mixfix24 vl_mixfix32
+static int vl_mixfix32 (fixed r, fixed g, fixed b)
+{
+ return ((r>>FIXED_SHIFT)<<16)
+       |((g>>FIXED_SHIFT)<<8)
+       |(b>>FIXED_SHIFT);
+}
+
+
+
+/* Desc: color composition (w/ ALPHA)
+ *
+ * In  : array of integers (R, G, B, A)
+ * Out : color
+ *
+ * Note: -
+ */
+#define vl_mixrgba8 vl_mixrgb8fake
+#define vl_mixrgba15 vl_mixrgb15
+#define vl_mixrgba16 vl_mixrgb16
+#define vl_mixrgba24 vl_mixrgb24
+static int vl_mixrgba32 (const unsigned char rgba[])
+{
+ return (rgba[3]<<24)|(rgba[0]<<16)|(rgba[1]<<8)|(rgba[2]);
+}
+
+
+
+/* Desc: color composition (w/o ALPHA)
+ *
+ * In  : array of integers (R, G, B)
+ * Out : color
+ *
+ * Note: -
+ */
+static int vl_mixrgb8fake (const unsigned char rgba[])
+{
+ return array_b[rgba[2]]*G_CNT*R_CNT
+      + array_g[rgba[1]]*R_CNT
+      + array_r[rgba[0]];
+}
+#define vl_mixrgb8 vl_mixrgb8fake
+static int vl_mixrgb15 (const unsigned char rgb[])
+{
+ return ((rgb[0]>>3)<<10)|((rgb[1]>>3)<<5)|(rgb[2]>>3);
+}
+static int vl_mixrgb16 (const unsigned char rgb[])
+{
+ return ((rgb[0]>>3)<<11)|((rgb[1]>>2)<<5)|(rgb[2]>>3);
+}
+#define vl_mixrgb24 vl_mixrgb32
+static int vl_mixrgb32 (const unsigned char rgb[])
+{
+ return (rgb[0]<<16)|(rgb[1]<<8)|(rgb[2]);
+}
+
+
+
+/* Desc: color decomposition
+ *
+ * In  : pixel offset, array of integers to hold color components (R, G, B, A)
+ * Out : -
+ *
+ * Note: uses current read buffer
+ */
+static void v_getrgba8fake6 (unsigned int offset, unsigned char rgba[])
+{
+ word32 c = VGAPalette[((word8 *)vl_current_read_buffer)[offset]];
+ rgba[0] = _rgb_scale_6[(c >> 16) & 0x3F];
+ rgba[1] = _rgb_scale_6[(c >> 8) & 0x3F];
+ rgba[2] = _rgb_scale_6[c & 0x3F];
+ rgba[3] = c >> 24;
+}
+static void v_getrgba8fake8 (unsigned int offset, unsigned char rgba[])
+{
+ word32 c = VGAPalette[((word8 *)vl_current_read_buffer)[offset]];
+ rgba[0] = c >> 16;
+ rgba[1] = c >> 8;
+ rgba[2] = c;
+ rgba[3] = c >> 24;
+}
+#define v_getrgba8 v_getrgba8fake6
+static void v_getrgba15 (unsigned int offset, unsigned char rgba[4])
+{
+ word32 c = ((word16 *)vl_current_read_buffer)[offset];
+ rgba[0] = _rgb_scale_5[(c >> 10) & 0x1F];
+ rgba[1] = _rgb_scale_5[(c >> 5) & 0x1F];
+ rgba[2] = _rgb_scale_5[c & 0x1F];
+ rgba[3] = 255;
+}
+static void v_getrgba16 (unsigned int offset, unsigned char rgba[4])
+{
+ word32 c = ((word16 *)vl_current_read_buffer)[offset];
+ rgba[0] = _rgb_scale_5[(c >> 11) & 0x1F];
+ rgba[1] = _rgb_scale_6[(c >> 5) & 0x3F];
+ rgba[2] = _rgb_scale_5[c & 0x1F];
+ rgba[3] = 255;
+}
+static void v_getrgba24 (unsigned int offset, unsigned char rgba[4])
+{
+ word32 c = *(word32 *)((long)vl_current_read_buffer+offset*3);
+ rgba[0] = c >> 16;
+ rgba[1] = c >> 8;
+ rgba[2] = c;
+ rgba[3] = 255;
+}
+static void v_getrgba32 (unsigned int offset, unsigned char rgba[4])
+{
+ word32 c = ((word32 *)vl_current_read_buffer)[offset];
+ rgba[0] = c >> 16;
+ rgba[1] = c >> 8;
+ rgba[2] = c; 
+ rgba[3] = c >> 24;
+}
+
+
+
+/* Desc: pixel retrieval
+ *
+ * In  : pixel offset
+ * Out : pixel value
+ *
+ * Note: uses current read buffer
+ */
+static int v_getpixel8 (unsigned int offset)
+{
+ return ((word8 *)vl_current_read_buffer)[offset];
+}
+#define v_getpixel15 v_getpixel16
+static int v_getpixel16 (unsigned int offset)
+{
+ return ((word16 *)vl_current_read_buffer)[offset];
+}
+static int v_getpixel24 (unsigned int offset)
+{
+ return *(word32 *)((long)vl_current_read_buffer+offset*3);
+}
+static int v_getpixel32 (unsigned int offset)
+{
+ return ((word32 *)vl_current_read_buffer)[offset];
+}
+
+
+
+/* Desc: set one palette entry
+ *
+ * In  : index, R, G, B
+ * Out : -
+ *
+ * Note: color components are in range [0.0 .. 1.0]
+ */
+void vl_setCI (int index, float red, float green, float blue)
+{
+ drv->setCI_f(index, red, green, blue);
+}
+
+
+
+/* Desc: set one palette entry
+ *
+ * In  : color, R, G, B
+ * Out : -
+ *
+ * Note: -
+ */
+static void fake_setcolor (int c, int r, int g, int b)
+{
+ VGAPalette[c] = 0xff000000 | (r<<16) | (g<<8) | b;
+
+ drv->setCI_i(c, r, g, b);
+}
+
+
+
+/* Desc: build FakeColor palette
+ *
+ * In  : CI precision in bits
+ * Out : -
+ *
+ * Note: -
+ */
+static void fake_buildpalette (int bits)
+{
+ double c_r, c_g, c_b;
+ int r, g, b, color = 0;
+
+ double max = (1 << bits) - 1;
+
+ for (b=0; b<B_CNT; ++b) {
+     for (g=0; g<G_CNT; ++g) {
+         for (r=0; r<R_CNT; ++r) {
+             c_r = 0.5 + (double)r*(max-R_BIAS)/(R_CNT-1.) + R_BIAS;
+             c_g = 0.5 + (double)g*(max-G_BIAS)/(G_CNT-1.) + G_BIAS;
+             c_b = 0.5 + (double)b*(max-B_BIAS)/(B_CNT-1.) + B_BIAS;
+             fake_setcolor(color++, (int)c_r, (int)c_g, (int)c_b);
+         }
+     }
+ }
+
+ for (color=0; color<256; color++) {
+     c_r = (double)color*R_CNT/256.;
+     c_g = (double)color*G_CNT/256.;
+     c_b = (double)color*B_CNT/256.;
+     array_r[color] = (int)c_r;
+     array_g[color] = (int)c_g;
+     array_b[color] = (int)c_b;
+ }
+}
+
+
+
+/* Desc: sync buffer with video hardware
+ *
+ * In  : ptr to old buffer, position, size
+ * Out : 0 if success
+ *
+ * Note: -
+ */
+int vl_sync_buffer (void **buffer, int x, int y, int width, int height)
+{
+ if ((width & 7) || (x < 0) || (y < 0) || (x+width > video_mode->xres) || (y+height > video_mode->yres)) {
+    return -1;
+ } else {
+    void *newbuf = *buffer;
+
+    if ((newbuf == NULL) || (vl_current_width != width) || (vl_current_height != height)) {
+       newbuf = realloc(newbuf, width * height * video_bypp);
+    }
+
+    if (newbuf == NULL) {
+       return -2;
+    }
+
+    vl_current_width = width;
+    vl_current_height = height;
+    vl_current_stride = vl_current_width * video_bypp;
+    vl_current_bytes = vl_current_stride * height;
+
+    vl_current_offset = video_scanlen * y + video_bypp * x;
+    vl_current_delta = video_scanlen - vl_current_stride;
+
+    vl_current_draw_buffer = vl_current_read_buffer = *buffer = newbuf;
+    return 0;
+ }
+}
+
+
+
+/* Desc: state retrieval
+ *
+ * In  : name, storage
+ * Out : -
+ *
+ * Note: -
+ */
+int vl_get (int pname, int *params)
+{
+ switch (pname) {
+        case VL_GET_SCREEN_SIZE:
+             params[0] = video_mode->xres;
+             params[1] = video_mode->yres;
+             break;
+        default:
+             return drv->get(pname, params);
+ }
+ return 0;
+}
+
+
+
+/* Desc: setup mode
+ *
+ * In  : ptr to mode definition
+ * Out : 0 if success
+ *
+ * Note: -
+ */
+static int vl_setup_mode (vl_mode *p)
+{
+ if (p == NULL) {
+    return -1;
+ }
+
+#define INITPTR(bpp) \
+        vl_putpixel = v_putpixel##bpp; \
+        vl_getrgba = v_getrgba##bpp;   \
+        vl_getpixel = v_getpixel##bpp; \
+        vl_rect = v_rect##bpp;         \
+        vl_mixfix = vl_mixfix##bpp;    \
+        vl_mixrgb = vl_mixrgb##bpp;    \
+        vl_mixrgba = vl_mixrgba##bpp;  \
+        vl_clear = _can_mmx() ? v_clear##bpp##_mmx : v_clear##bpp
+        
+ switch (p->bpp) {
+        case 8:
+             INITPTR(8);
+             break;
+        case 15:
+             INITPTR(15);
+             break;
+        case 16:
+             INITPTR(16);
+             break;
+        case 24:
+             INITPTR(24);
+             break;
+        case 32:
+             INITPTR(32);
+             break;
+        default:
+             return -1;
+ }
+
+#undef INITPTR
+
+ video_mode = p;
+ video_bypp = (p->bpp+7)/8;
+ video_scanlen = p->scanlen;
+ vl_video_selector = p->sel;
+
+ return 0;
+}
+
+
+
+/* Desc: restore to the mode prior to first call to `vl_video_init'.
+ *
+ * In  : -
+ * Out : -
+ *
+ * Note: -
+ */
+void vl_video_exit (void)
+{
+ drv->restore();
+ drv->fini();
+}
+
+
+
+/* Desc: enter mode
+ *
+ * In  : xres, yres, bits/pixel, RGB, refresh rate
+ * Out : pixel width in bits if success
+ *
+ * Note: -
+ */
+int vl_video_init (int width, int height, int bpp, int rgb, int refresh)
+{
+ int fake;
+ vl_mode *p, *q;
+ unsigned int min;
+
+ fake = 0;
+ if (!rgb) {
+    bpp = 8;
+ } else if (bpp == 8) {
+    fake = 1;
+ }
+
+ /* initialize hardware */
+ drv = &VESA;
+ if ((q=drv->init()) == NULL) {
+    drv = &VGA;
+    if ((q=drv->init()) == NULL) {
+       return 0;
+    }
+ }
+
+ /* search for a mode that fits our request */
+ for (min=-1, p=NULL; q->mode!=0xffff; q++) {
+     if ((q->xres>=width) && (q->yres>=height) && (q->bpp==bpp)) {
+        if (min>=(unsigned)(q->xres*q->yres)) {
+           min = q->xres*q->yres;
+           p = q;
+        }
+     }
+ }
+
+ /* setup and enter mode */
+ if ((vl_setup_mode(p) == 0) && (drv->entermode(p, refresh) == 0)) {
+    vl_flip = drv->blit;
+    if (fake) {
+       drv->get(VL_GET_CI_PREC, (int *)(&min));
+       fake_buildpalette(min);
+       if (min == 8) {
+          vl_getrgba = v_getrgba8fake8;
+       }
+    }
+    return bpp;
+ }
+
+ /* abort */
+ return 0;
+}
diff --git a/src/mesa/drivers/dos/video.h b/src/mesa/drivers/dos/video.h
index bb40fd00df..55560ee25b 100644
--- a/src/mesa/drivers/dos/video.h
+++ b/src/mesa/drivers/dos/video.h
@@ -1,64 +1,64 @@
-/*

- * Mesa 3-D graphics library

- * Version:  4.0

- * 

- * Copyright (C) 1999  Brian Paul   All Rights Reserved.

- * 

- * Permission is hereby granted, free of charge, to any person obtaining a

- * copy of this software and associated documentation files (the "Software"),

- * to deal in the Software without restriction, including without limitation

- * the rights to use, copy, modify, merge, publish, distribute, sublicense,

- * and/or sell copies of the Software, and to permit persons to whom the

- * Software is furnished to do so, subject to the following conditions:

- * 

- * The above copyright notice and this permission notice shall be included

- * in all copies or substantial portions of the Software.

- * 

- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS

- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL

- * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN

- * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN

- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

- */

-

-/*

- * DOS/DJGPP device driver v1.3 for Mesa

- *

- *  Copyright (C) 2002 - Borca Daniel

- *  Email : dborca@yahoo.com

- *  Web   : http://www.geocities.com/dborca

- */

-

-

-#ifndef VIDEO_H_included

-#define VIDEO_H_included

-

-typedef int fixed;

-

-#define VL_GET_CARD_NAME   0x0100

-#define VL_GET_VRAM        0x0101

-#define VL_GET_CI_PREC     0x0200

-#define VL_GET_HPIXELS     0x0201

-#define VL_GET_SCREEN_SIZE 0x0202

-

-extern int (*vl_mixfix) (fixed r, fixed g, fixed b);

-extern int (*vl_mixrgb) (const unsigned char rgb[]);

-extern int (*vl_mixrgba) (const unsigned char rgba[]);

-extern void (*vl_getrgba) (unsigned int offset, unsigned char rgba[4]);

-

-extern void (*vl_clear) (int color);

-extern void (*vl_rect) (int x, int y, int width, int height, int color);

-extern void (*vl_flip) (void);

-extern void (*vl_putpixel) (unsigned int offset, int color);

-extern int (*vl_getpixel) (unsigned int offset);

-

-void vl_setCI (int index, float red, float green, float blue);

-

-int vl_sync_buffer (void **buffer, int x, int y, int width, int height);

-int vl_get (int pname, int *params);

-

-void vl_video_exit (void);

-int vl_video_init (int width, int height, int bpp, int rgb, int refresh);

-

-#endif

+/*
+ * Mesa 3-D graphics library
+ * Version:  4.0
+ * 
+ * Copyright (C) 1999  Brian Paul   All Rights Reserved.
+ * 
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ * 
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/*
+ * DOS/DJGPP device driver v1.3 for Mesa
+ *
+ *  Copyright (C) 2002 - Borca Daniel
+ *  Email : dborca@yahoo.com
+ *  Web   : http://www.geocities.com/dborca
+ */
+
+
+#ifndef VIDEO_H_included
+#define VIDEO_H_included
+
+typedef int fixed;
+
+#define VL_GET_CARD_NAME   0x0100
+#define VL_GET_VRAM        0x0101
+#define VL_GET_CI_PREC     0x0200
+#define VL_GET_HPIXELS     0x0201
+#define VL_GET_SCREEN_SIZE 0x0202
+
+extern int (*vl_mixfix) (fixed r, fixed g, fixed b);
+extern int (*vl_mixrgb) (const unsigned char rgb[]);
+extern int (*vl_mixrgba) (const unsigned char rgba[]);
+extern void (*vl_getrgba) (unsigned int offset, unsigned char rgba[4]);
+
+extern void (*vl_clear) (int color);
+extern void (*vl_rect) (int x, int y, int width, int height, int color);
+extern void (*vl_flip) (void);
+extern void (*vl_putpixel) (unsigned int offset, int color);
+extern int (*vl_getpixel) (unsigned int offset);
+
+void vl_setCI (int index, float red, float green, float blue);
+
+int vl_sync_buffer (void **buffer, int x, int y, int width, int height);
+int vl_get (int pname, int *params);
+
+void vl_video_exit (void);
+int vl_video_init (int width, int height, int bpp, int rgb, int refresh);
+
+#endif
diff --git a/src/mesa/drivers/dos/virtual.S b/src/mesa/drivers/dos/virtual.S
index 0df584150f..c5cc1fe86f 100644
--- a/src/mesa/drivers/dos/virtual.S
+++ b/src/mesa/drivers/dos/virtual.S
@@ -1,489 +1,489 @@
-/*

- * Mesa 3-D graphics library

- * Version:  4.0

- * 

- * Copyright (C) 1999  Brian Paul   All Rights Reserved.

- * 

- * Permission is hereby granted, free of charge, to any person obtaining a

- * copy of this software and associated documentation files (the "Software"),

- * to deal in the Software without restriction, including without limitation

- * the rights to use, copy, modify, merge, publish, distribute, sublicense,

- * and/or sell copies of the Software, and to permit persons to whom the

- * Software is furnished to do so, subject to the following conditions:

- * 

- * The above copyright notice and this permission notice shall be included

- * in all copies or substantial portions of the Software.

- * 

- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS

- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL

- * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN

- * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN

- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

- */

-

-/*

- * DOS/DJGPP device driver v1.3 for Mesa

- *

- *  Copyright (C) 2002 - Borca Daniel

- *  Email : dborca@yahoo.com

- *  Web   : http://www.geocities.com/dborca

- */

-

-

-		.file	"virtual.S"

-

-/*

- * extern void *vl_current_draw_buffer;

- * extern int vl_current_width, vl_current_bytes;

- */

-

-		.text

-

-/* Desc: void v_clear8 (int color);

- *

- * In  : color

- * Out : -

- *

- * Note: uses current draw buffer

- */

-		.p2align 5,,31

-		.global	_v_clear8

-_v_clear8:

-		movl	4(%esp), %eax

-		movb	%al, %ah

-		pushw	%ax

-		pushw	%ax

-		popl	%eax

-		jmp	_v_clear_common

-

-/* Desc: void v_clear16 (int color);

- *

- * In  : color

- * Out : -

- *

- * Note: uses current draw buffer

- */

-		.p2align 5,,31

-		.global	_v_clear16

-_v_clear16:

-		movl	4(%esp), %eax

-		pushw	%ax

-		pushw	%ax

-		popl	%eax

-		jmp	_v_clear_common

-

-/* Desc: void v_clear32 (int color);

- *

- * In  : color

- * Out : -

- *

- * Note: uses current draw buffer

- */

-		.p2align 5,,31

-		.global	_v_clear32

-_v_clear32:

-		movl	4(%esp), %eax

-		.balign	4

-_v_clear_common:

-		movl	_vl_current_bytes, %ecx

-		movl	_vl_current_draw_buffer, %edx

-		shrl	$2, %ecx

-		.balign	4

-	0:

-		movl	%eax, (%edx)

-		addl	$4, %edx

-		decl	%ecx

-		jnz	0b

-		ret

-

-/* Desc: void v_clear8_mmx (int color);

- *

- * In  : color

- * Out : -

- *

- * Note: uses current draw buffer

- */

-		.p2align 5,,31

-		.global	_v_clear8_mmx

-_v_clear8_mmx:

-#ifdef USE_MMX_ASM

-		movd	4(%esp), %mm0

-		punpcklbw %mm0, %mm0

-		punpcklwd %mm0, %mm0

-		jmp	_v_clear_common_mmx

-#endif

-

-/* Desc: void v_clear16_mmx (int color);

- *

- * In  : color

- * Out : -

- *

- * Note: uses current draw buffer

- */

-		.p2align 5,,31

-		.global	_v_clear16_mmx

-_v_clear16_mmx:

-#ifdef USE_MMX_ASM

-		movd	4(%esp), %mm0

-		punpcklwd %mm0, %mm0

-		jmp	_v_clear_common_mmx

-#endif

-

-/* Desc: void v_clear32_mmx (int color);

- *

- * In  : color

- * Out : -

- *

- * Note: uses current draw buffer

- */

-		.p2align 5,,31

-		.global	_v_clear32_mmx

-_v_clear32_mmx:

-#ifdef USE_MMX_ASM

-		movd	4(%esp), %mm0

-		.balign	4

-_v_clear_common_mmx:

-		punpckldq %mm0, %mm0

-		movl	_vl_current_bytes, %ecx

-		movl	_vl_current_draw_buffer, %edx

-		shrl	$3, %ecx

-		.balign	4

-	0:

-		movq	%mm0, (%edx)

-		addl	$8, %edx

-		decl	%ecx

-		jnz	0b

-		emms

-#endif

-		ret

-

-/* Desc: void v_clear24 (int color);

- *

- * In  : color

- * Out : -

- *

- * Note: uses current draw buffer

- */

-		.p2align 5,,31

-		.global	_v_clear24

-_v_clear24:

-		movl	$0xaaaaaaab, %eax

-		mull	_vl_current_bytes

-		movl	4(%esp), %eax

-		movl	%edx, %ecx

-		pushl	%ebx

-		movl	_vl_current_draw_buffer, %edx

-		shrl	%ecx

-		movb	10(%esp), %bl

-		.balign	4

-	0:

-		movw	%ax, (%edx)

-		movb	%bl, 2(%edx)

-		addl	$3, %edx

-		decl	%ecx

-		jnz	0b

-		popl	%ebx

-		ret

-

-/* Desc: void v_clear24_mmx (int color);

- *

- * In  : color

- * Out : -

- *

- * Note: uses current draw buffer

- */

-		.p2align 5,,31

-		.global	_v_clear24_mmx

-_v_clear24_mmx:

-#ifdef USE_MMX_ASM

-		movl	4(%esp), %eax

-		movl	%eax, %edx

-		movl	%eax, %ecx

-		shll	$16, %edx

-		rorl	$8, %ecx

-		movw	%cx, %dx

-		rorl	$16, %ecx

-		movb	%dh, %cl

-		shll	$8, %eax

-		movb	%ch, %al

-		rorl	$8, %eax

-

-		pushl	%edx

-		pushl	%eax

-		movq	(%esp), %mm0

-		pushl	%ecx

-		movq	(%esp), %mm1

-		pushl	%edx

-		movq	(%esp), %mm2

-

-		movl	$0xaaaaaaab, %eax

-		mull	_vl_current_bytes

-		movl	%edx, %ecx

-		movl	_vl_current_draw_buffer, %edx

-		shrl	$4, %ecx

-		.balign	4

-	0:

-		movq	%mm0, (%edx)

-		movq	%mm1, 8(%edx)

-		movq	%mm2, 16(%edx)

-		addl	$24, %edx

-		decl	%ecx

-		jnz	0b

-		emms

-		addl	$16, %esp

-#endif

-		ret

-

-/* Desc: void v_rect8 (int color);

- *

- * In  : color

- * Out : -

- *

- * Note: uses current draw buffer

- */

-		.p2align 5,,31

-		.global	_v_rect8

-_v_rect8:

-		cld

-		pushl	%esi

-		pushl	%edi

-		movl	28(%esp), %eax

-		movl	_vl_current_width, %esi

-		movl	16(%esp), %edi

-		movb	%al, %ah

-		movl	20(%esp), %ecx

-		imull	%esi, %edi

-		movl	24(%esp), %edx

-		subl	%ecx, %esi

-		addl	12(%esp), %edi

-		pushw	%ax

-		pushw	%ax

-		pushl	%ds

-		popl	%es

-		addl	_vl_current_draw_buffer, %edi

-		popl	%eax

-		pushl	%ebx

-		movl	%ecx, %ebx

-		andl	$3, %ebx

-		.balign	4

-	0:

-		pushl	%ecx

-		.balign	4

-	1:

-		shrl	$2, %ecx

-		rep;	stosl

-		testl	%ebx, %ebx

-		jz	2f

-		movl	%ebx, %ecx

-		rep;	stosb

-		.balign	4

-	2:

-		popl	%ecx

-		addl	%esi, %edi

-		decl	%edx

-		jnz	0b

-		popl	%ebx

-		popl	%edi

-		popl	%esi

-		ret

-

-/* Desc: void v_rect16 (int color);

- *

- * In  : color

- * Out : -

- *

- * Note: uses current draw buffer

- */

-		.p2align 5,,31

-		.global	_v_rect16

-_v_rect16:

-		cld

-		pushl	%esi

-		pushl	%edi

-		movl	28(%esp), %eax

-		movl	_vl_current_width, %esi

-		movl	16(%esp), %edi

-		movl	20(%esp), %ecx

-		imull	%esi, %edi

-		movl	24(%esp), %edx

-		subl	%ecx, %esi

-		addl	12(%esp), %edi

-		pushw	%ax

-		shll	%esi

-		pushw	%ax

-		shll	%edi

-		pushl	%ds

-		popl	%es

-		addl	_vl_current_draw_buffer, %edi

-		popl	%eax

-		.balign	4

-	0:

-		pushl	%ecx

-		.balign	4

-	1:

-		shrl	%ecx

-		rep;	stosl

-		jnc	2f

-		stosw

-		.balign	4

-	2:

-		popl	%ecx

-		addl	%esi, %edi

-		decl	%edx

-		jnz	0b

-		popl	%edi

-		popl	%esi

-		ret

-

-/* Desc: void v_rect24 (int color);

- *

- * In  : color

- * Out : -

- *

- * Note: uses current draw buffer

- */

-		.p2align 5,,31

-		.global	_v_rect24

-_v_rect24:

-		pushl	%esi

-		pushl	%edi

-		movl	28(%esp), %eax

-		movl	_vl_current_width, %esi

-		movl	16(%esp), %edi

-		movl	20(%esp), %ecx

-		imull	%esi, %edi

-		movl	24(%esp), %edx

-		subl	%ecx, %esi

-		addl	12(%esp), %edi

-		leal	(%esi, %esi, 2), %esi

-		pushl	%ebx

-		leal	(%edi, %edi, 2), %edi

-		movl	%eax, %ebx

-		addl	_vl_current_draw_buffer, %edi

-		shrl	$16, %ebx

-		.balign	4

-	0:

-		pushl	%ecx

-		.balign	4

-	1:

-		movw	%ax, (%edi)

-		movb	%bl, 2(%edi)

-		addl	$3, %edi

-		decl	%ecx

-		jnz	1b

-		popl	%ecx

-		addl	%esi, %edi

-		decl	%edx

-		jnz	0b

-		popl	%ebx

-		popl	%edi

-		popl	%esi

-		ret

-

-/* Desc: void v_rect32 (int color);

- *

- * In  : color

- * Out : -

- *

- * Note: uses current draw buffer

- */

-		.p2align 5,,31

-		.global	_v_rect32

-_v_rect32:

-		pushl	%esi

-		pushl	%edi

-		movl	_vl_current_width, %esi

-		movl	16(%esp), %edi

-		movl	20(%esp), %ecx

-		imull	%esi, %edi

-		movl	24(%esp), %edx

-		subl	%ecx, %esi

-		addl	12(%esp), %edi

-		shll	$2, %esi

-		shll	$2, %edi

-		movl	28(%esp), %eax

-		addl	_vl_current_draw_buffer, %edi

-		.balign	4

-	0:

-		pushl	%ecx

-		.balign	4

-	1:

-		movl	%eax, (%edi)

-		addl	$4, %edi

-		decl	%ecx

-		jnz	1b

-		popl	%ecx

-		addl	%esi, %edi

-		decl	%edx

-		jnz	0b

-		popl	%edi

-		popl	%esi

-		ret

-

-/* Desc: void v_putpixel8 (unsigned int offset, int color);

- *

- * In  : offset within buffer, color

- * Out : -

- *

- * Note: uses current draw buffer

- */

-		.p2align 5,,31

-		.global	_v_putpixel8

-_v_putpixel8:

-		movl	8(%esp), %ecx

-		movl	4(%esp), %edx

-		movl	_vl_current_draw_buffer, %eax

-		movb	%cl, (%eax,%edx)

-		ret

-

-/* Desc: void v_putpixel16 (unsigned int offset, int color);

- *

- * In  : offset within buffer, color

- * Out : -

- *

- * Note: uses current draw buffer

- */

-		.p2align 5,,31

-		.global	_v_putpixel16

-_v_putpixel16:

-		movl	8(%esp), %ecx

-		movl	4(%esp), %edx

-		movl	_vl_current_draw_buffer, %eax

-		movw	%cx, (%eax,%edx,2)

-		ret

-

-/* Desc: void v_putpixel24 (unsigned int offset, int color);

- *

- * In  : offset within buffer, color

- * Out : -

- *

- * Note: uses current draw buffer

- */

-		.p2align 5,,31

-		.global	_v_putpixel24

-_v_putpixel24:

-		movl	4(%esp), %eax

-		movl	8(%esp), %edx

-		movl	_vl_current_draw_buffer, %ecx

-		leal	(%eax,%eax,2), %eax

-		movw	%dx, (%ecx,%eax)

-		shrl	$16, %edx

-		movb	%dl, 2(%ecx,%eax)

-		ret

-

-/* Desc: void v_putpixel32 (unsigned int offset, int color);

- *

- * In  : offset within buffer, color

- * Out : -

- *

- * Note: uses current draw buffer

- */

-		.p2align 5,,31

-		.global	_v_putpixel32

-_v_putpixel32:

-		movl	8(%esp), %ecx

-		movl	4(%esp), %edx

-		movl	_vl_current_draw_buffer, %eax

-		movl	%ecx, (%eax,%edx,4)

-		ret

+/*
+ * Mesa 3-D graphics library
+ * Version:  4.0
+ * 
+ * Copyright (C) 1999  Brian Paul   All Rights Reserved.
+ * 
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ * 
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/*
+ * DOS/DJGPP device driver v1.3 for Mesa
+ *
+ *  Copyright (C) 2002 - Borca Daniel
+ *  Email : dborca@yahoo.com
+ *  Web   : http://www.geocities.com/dborca
+ */
+
+
+		.file	"virtual.S"
+
+/*
+ * extern void *vl_current_draw_buffer;
+ * extern int vl_current_width, vl_current_bytes;
+ */
+
+		.text
+
+/* Desc: void v_clear8 (int color);
+ *
+ * In  : color
+ * Out : -
+ *
+ * Note: uses current draw buffer
+ */
+		.p2align 5,,31
+		.global	_v_clear8
+_v_clear8:
+		movl	4(%esp), %eax
+		movb	%al, %ah
+		pushw	%ax
+		pushw	%ax
+		popl	%eax
+		jmp	_v_clear_common
+
+/* Desc: void v_clear16 (int color);
+ *
+ * In  : color
+ * Out : -
+ *
+ * Note: uses current draw buffer
+ */
+		.p2align 5,,31
+		.global	_v_clear16
+_v_clear16:
+		movl	4(%esp), %eax
+		pushw	%ax
+		pushw	%ax
+		popl	%eax
+		jmp	_v_clear_common
+
+/* Desc: void v_clear32 (int color);
+ *
+ * In  : color
+ * Out : -
+ *
+ * Note: uses current draw buffer
+ */
+		.p2align 5,,31
+		.global	_v_clear32
+_v_clear32:
+		movl	4(%esp), %eax
+		.balign	4
+_v_clear_common:
+		movl	_vl_current_bytes, %ecx
+		movl	_vl_current_draw_buffer, %edx
+		shrl	$2, %ecx
+		.balign	4
+	0:
+		movl	%eax, (%edx)
+		addl	$4, %edx
+		decl	%ecx
+		jnz	0b
+		ret
+
+/* Desc: void v_clear8_mmx (int color);
+ *
+ * In  : color
+ * Out : -
+ *
+ * Note: uses current draw buffer
+ */
+		.p2align 5,,31
+		.global	_v_clear8_mmx
+_v_clear8_mmx:
+#ifdef USE_MMX_ASM
+		movd	4(%esp), %mm0
+		punpcklbw %mm0, %mm0
+		punpcklwd %mm0, %mm0
+		jmp	_v_clear_common_mmx
+#endif
+
+/* Desc: void v_clear16_mmx (int color);
+ *
+ * In  : color
+ * Out : -
+ *
+ * Note: uses current draw buffer
+ */
+		.p2align 5,,31
+		.global	_v_clear16_mmx
+_v_clear16_mmx:
+#ifdef USE_MMX_ASM
+		movd	4(%esp), %mm0
+		punpcklwd %mm0, %mm0
+		jmp	_v_clear_common_mmx
+#endif
+
+/* Desc: void v_clear32_mmx (int color);
+ *
+ * In  : color
+ * Out : -
+ *
+ * Note: uses current draw buffer
+ */
+		.p2align 5,,31
+		.global	_v_clear32_mmx
+_v_clear32_mmx:
+#ifdef USE_MMX_ASM
+		movd	4(%esp), %mm0
+		.balign	4
+_v_clear_common_mmx:
+		punpckldq %mm0, %mm0
+		movl	_vl_current_bytes, %ecx
+		movl	_vl_current_draw_buffer, %edx
+		shrl	$3, %ecx
+		.balign	4
+	0:
+		movq	%mm0, (%edx)
+		addl	$8, %edx
+		decl	%ecx
+		jnz	0b
+		emms
+#endif
+		ret
+
+/* Desc: void v_clear24 (int color);
+ *
+ * In  : color
+ * Out : -
+ *
+ * Note: uses current draw buffer
+ */
+		.p2align 5,,31
+		.global	_v_clear24
+_v_clear24:
+		movl	$0xaaaaaaab, %eax
+		mull	_vl_current_bytes
+		movl	4(%esp), %eax
+		movl	%edx, %ecx
+		pushl	%ebx
+		movl	_vl_current_draw_buffer, %edx
+		shrl	%ecx
+		movb	10(%esp), %bl
+		.balign	4
+	0:
+		movw	%ax, (%edx)
+		movb	%bl, 2(%edx)
+		addl	$3, %edx
+		decl	%ecx
+		jnz	0b
+		popl	%ebx
+		ret
+
+/* Desc: void v_clear24_mmx (int color);
+ *
+ * In  : color
+ * Out : -
+ *
+ * Note: uses current draw buffer
+ */
+		.p2align 5,,31
+		.global	_v_clear24_mmx
+_v_clear24_mmx:
+#ifdef USE_MMX_ASM
+		movl	4(%esp), %eax
+		movl	%eax, %edx
+		movl	%eax, %ecx
+		shll	$16, %edx
+		rorl	$8, %ecx
+		movw	%cx, %dx
+		rorl	$16, %ecx
+		movb	%dh, %cl
+		shll	$8, %eax
+		movb	%ch, %al
+		rorl	$8, %eax
+
+		pushl	%edx
+		pushl	%eax
+		movq	(%esp), %mm0
+		pushl	%ecx
+		movq	(%esp), %mm1
+		pushl	%edx
+		movq	(%esp), %mm2
+
+		movl	$0xaaaaaaab, %eax
+		mull	_vl_current_bytes
+		movl	%edx, %ecx
+		movl	_vl_current_draw_buffer, %edx
+		shrl	$4, %ecx
+		.balign	4
+	0:
+		movq	%mm0, (%edx)
+		movq	%mm1, 8(%edx)
+		movq	%mm2, 16(%edx)
+		addl	$24, %edx
+		decl	%ecx
+		jnz	0b
+		emms
+		addl	$16, %esp
+#endif
+		ret
+
+/* Desc: void v_rect8 (int color);
+ *
+ * In  : color
+ * Out : -
+ *
+ * Note: uses current draw buffer
+ */
+		.p2align 5,,31
+		.global	_v_rect8
+_v_rect8:
+		cld
+		pushl	%esi
+		pushl	%edi
+		movl	28(%esp), %eax
+		movl	_vl_current_width, %esi
+		movl	16(%esp), %edi
+		movb	%al, %ah
+		movl	20(%esp), %ecx
+		imull	%esi, %edi
+		movl	24(%esp), %edx
+		subl	%ecx, %esi
+		addl	12(%esp), %edi
+		pushw	%ax
+		pushw	%ax
+		pushl	%ds
+		popl	%es
+		addl	_vl_current_draw_buffer, %edi
+		popl	%eax
+		pushl	%ebx
+		movl	%ecx, %ebx
+		andl	$3, %ebx
+		.balign	4
+	0:
+		pushl	%ecx
+		.balign	4
+	1:
+		shrl	$2, %ecx
+		rep;	stosl
+		testl	%ebx, %ebx
+		jz	2f
+		movl	%ebx, %ecx
+		rep;	stosb
+		.balign	4
+	2:
+		popl	%ecx
+		addl	%esi, %edi
+		decl	%edx
+		jnz	0b
+		popl	%ebx
+		popl	%edi
+		popl	%esi
+		ret
+
+/* Desc: void v_rect16 (int color);
+ *
+ * In  : color
+ * Out : -
+ *
+ * Note: uses current draw buffer
+ */
+		.p2align 5,,31
+		.global	_v_rect16
+_v_rect16:
+		cld
+		pushl	%esi
+		pushl	%edi
+		movl	28(%esp), %eax
+		movl	_vl_current_width, %esi
+		movl	16(%esp), %edi
+		movl	20(%esp), %ecx
+		imull	%esi, %edi
+		movl	24(%esp), %edx
+		subl	%ecx, %esi
+		addl	12(%esp), %edi
+		pushw	%ax
+		shll	%esi
+		pushw	%ax
+		shll	%edi
+		pushl	%ds
+		popl	%es
+		addl	_vl_current_draw_buffer, %edi
+		popl	%eax
+		.balign	4
+	0:
+		pushl	%ecx
+		.balign	4
+	1:
+		shrl	%ecx
+		rep;	stosl
+		jnc	2f
+		stosw
+		.balign	4
+	2:
+		popl	%ecx
+		addl	%esi, %edi
+		decl	%edx
+		jnz	0b
+		popl	%edi
+		popl	%esi
+		ret
+
+/* Desc: void v_rect24 (int color);
+ *
+ * In  : color
+ * Out : -
+ *
+ * Note: uses current draw buffer
+ */
+		.p2align 5,,31
+		.global	_v_rect24
+_v_rect24:
+		pushl	%esi
+		pushl	%edi
+		movl	28(%esp), %eax
+		movl	_vl_current_width, %esi
+		movl	16(%esp), %edi
+		movl	20(%esp), %ecx
+		imull	%esi, %edi
+		movl	24(%esp), %edx
+		subl	%ecx, %esi
+		addl	12(%esp), %edi
+		leal	(%esi, %esi, 2), %esi
+		pushl	%ebx
+		leal	(%edi, %edi, 2), %edi
+		movl	%eax, %ebx
+		addl	_vl_current_draw_buffer, %edi
+		shrl	$16, %ebx
+		.balign	4
+	0:
+		pushl	%ecx
+		.balign	4
+	1:
+		movw	%ax, (%edi)
+		movb	%bl, 2(%edi)
+		addl	$3, %edi
+		decl	%ecx
+		jnz	1b
+		popl	%ecx
+		addl	%esi, %edi
+		decl	%edx
+		jnz	0b
+		popl	%ebx
+		popl	%edi
+		popl	%esi
+		ret
+
+/* Desc: void v_rect32 (int color);
+ *
+ * In  : color
+ * Out : -
+ *
+ * Note: uses current draw buffer
+ */
+		.p2align 5,,31
+		.global	_v_rect32
+_v_rect32:
+		pushl	%esi
+		pushl	%edi
+		movl	_vl_current_width, %esi
+		movl	16(%esp), %edi
+		movl	20(%esp), %ecx
+		imull	%esi, %edi
+		movl	24(%esp), %edx
+		subl	%ecx, %esi
+		addl	12(%esp), %edi
+		shll	$2, %esi
+		shll	$2, %edi
+		movl	28(%esp), %eax
+		addl	_vl_current_draw_buffer, %edi
+		.balign	4
+	0:
+		pushl	%ecx
+		.balign	4
+	1:
+		movl	%eax, (%edi)
+		addl	$4, %edi
+		decl	%ecx
+		jnz	1b
+		popl	%ecx
+		addl	%esi, %edi
+		decl	%edx
+		jnz	0b
+		popl	%edi
+		popl	%esi
+		ret
+
+/* Desc: void v_putpixel8 (unsigned int offset, int color);
+ *
+ * In  : offset within buffer, color
+ * Out : -
+ *
+ * Note: uses current draw buffer
+ */
+		.p2align 5,,31
+		.global	_v_putpixel8
+_v_putpixel8:
+		movl	8(%esp), %ecx
+		movl	4(%esp), %edx
+		movl	_vl_current_draw_buffer, %eax
+		movb	%cl, (%eax,%edx)
+		ret
+
+/* Desc: void v_putpixel16 (unsigned int offset, int color);
+ *
+ * In  : offset within buffer, color
+ * Out : -
+ *
+ * Note: uses current draw buffer
+ */
+		.p2align 5,,31
+		.global	_v_putpixel16
+_v_putpixel16:
+		movl	8(%esp), %ecx
+		movl	4(%esp), %edx
+		movl	_vl_current_draw_buffer, %eax
+		movw	%cx, (%eax,%edx,2)
+		ret
+
+/* Desc: void v_putpixel24 (unsigned int offset, int color);
+ *
+ * In  : offset within buffer, color
+ * Out : -
+ *
+ * Note: uses current draw buffer
+ */
+		.p2align 5,,31
+		.global	_v_putpixel24
+_v_putpixel24:
+		movl	4(%esp), %eax
+		movl	8(%esp), %edx
+		movl	_vl_current_draw_buffer, %ecx
+		leal	(%eax,%eax,2), %eax
+		movw	%dx, (%ecx,%eax)
+		shrl	$16, %edx
+		movb	%dl, 2(%ecx,%eax)
+		ret
+
+/* Desc: void v_putpixel32 (unsigned int offset, int color);
+ *
+ * In  : offset within buffer, color
+ * Out : -
+ *
+ * Note: uses current draw buffer
+ */
+		.p2align 5,,31
+		.global	_v_putpixel32
+_v_putpixel32:
+		movl	8(%esp), %ecx
+		movl	4(%esp), %edx
+		movl	_vl_current_draw_buffer, %eax
+		movl	%ecx, (%eax,%edx,4)
+		ret