obsolete

2 files changed, 0 insertions, 1661 deletions

diff --git a/src/mesa/drivers/dos/DEPEND.DOS b/src/mesa/drivers/dos/DEPEND.DOS
deleted file mode 100644
index 60a0fdcc28..0000000000
--- a/src/mesa/drivers/dos/DEPEND.DOS
+++ /dev/null
@@ -1,119 +0,0 @@
-# DO NOT DELETE

-

-accum.obj: accum.h types.h ..\include\GL\gl.h config.h fixed.h dd.h context.h

-accum.obj: dlist.h macros.h

-alpha.obj: alpha.h types.h ..\include\GL\gl.h config.h fixed.h dd.h context.h

-alpha.obj: dlist.h macros.h

-alphabuf.obj: alphabuf.h types.h ..\include\GL\gl.h config.h fixed.h dd.h

-alphabuf.obj: context.h macros.h

-api1.obj: api.h bitmap.h types.h ..\include\GL\gl.h config.h fixed.h dd.h context.h

-api1.obj: eval.h image.h macros.h matrix.h teximage.h

-api2.obj: api.h bitmap.h types.h ..\include\GL\gl.h config.h fixed.h dd.h context.h

-api2.obj: eval.h image.h macros.h matrix.h teximage.h

-attrib.obj: attrib.h types.h ..\include\GL\gl.h config.h fixed.h dd.h context.h

-attrib.obj: draw.h dlist.h macros.h

-bitmap.obj: bitmap.h types.h ..\include\GL\gl.h config.h fixed.h dd.h context.h

-bitmap.obj: feedback.h image.h macros.h pb.h

-blend.obj: alphabuf.h types.h ..\include\GL\gl.h config.h fixed.h dd.h blend.h

-blend.obj: context.h dlist.h macros.h pb.h span.h

-bresenhm.obj: bresenhm.h types.h ..\include\GL\gl.h config.h fixed.h dd.h

-clip.obj: clip.h types.h ..\include\GL\gl.h config.h fixed.h dd.h context.h

-clip.obj: dlist.h macros.h matrix.h vb.h xform.h

-context.obj: context.h types.h ..\include\GL\gl.h config.h fixed.h dd.h depth.h

-context.obj: draw.h eval.h light.h lines.h dlist.h macros.h pb.h points.h

-context.obj: pointers.h triangle.h teximage.h texobj.h texture.h vb.h vertex.h

-copypix.obj: context.h types.h ..\include\GL\gl.h config.h fixed.h dd.h

-copypix.obj: copypix.h depth.h feedback.h dlist.h macros.h pixel.h span.h

-copypix.obj: stencil.h

-depth.obj: context.h types.h ..\include\GL\gl.h config.h fixed.h dd.h depth.h

-depth.obj: dlist.h macros.h

-dlist.obj: accum.h types.h ..\include\GL\gl.h config.h fixed.h dd.h alpha.h

-dlist.obj: attrib.h bitmap.h blend.h clip.h context.h copypix.h depth.h draw.h

-dlist.obj: drawpix.h enable.h eval.h feedback.h fog.h image.h light.h lines.h

-dlist.obj: dlist.h logic.h macros.h masking.h matrix.h misc.h pixel.h points.h

-dlist.obj: polygon.h scissor.h stencil.h texobj.h teximage.h texture.h vb.h

-dlist.obj: vertex.h winpos.h

-draw.obj: clip.h types.h ..\include\GL\gl.h config.h fixed.h dd.h context.h

-draw.obj: draw.h feedback.h fog.h light.h lines.h dlist.h macros.h matrix.h

-draw.obj: pb.h points.h texture.h vb.h xform.h

-drawpix.obj: context.h types.h ..\include\GL\gl.h config.h fixed.h dd.h

-drawpix.obj: drawpix.h feedback.h dlist.h macros.h pixel.h span.h stencil.h

-enable.obj: context.h types.h ..\include\GL\gl.h config.h fixed.h dd.h depth.h

-enable.obj: draw.h enable.h light.h dlist.h macros.h stencil.h

-eval.obj: context.h types.h ..\include\GL\gl.h config.h fixed.h dd.h draw.h

-eval.obj: eval.h dlist.h macros.h

-feedback.obj: context.h types.h ..\include\GL\gl.h config.h fixed.h dd.h

-feedback.obj: feedback.h dlist.h macros.h

-fog.obj: context.h types.h ..\include\GL\gl.h config.h fixed.h dd.h fog.h

-fog.obj: dlist.h macros.h

-get.obj: context.h types.h ..\include\GL\gl.h config.h fixed.h dd.h get.h

-get.obj: dlist.h macros.h

-hash.obj: hash.h

-interp.obj: interp.h types.h ..\include\GL\gl.h config.h fixed.h dd.h macros.h

-image.obj: image.h types.h ..\include\GL\gl.h config.h fixed.h dd.h macros.h

-image.obj: pixel.h

-light.obj: context.h types.h ..\include\GL\gl.h config.h fixed.h dd.h light.h

-light.obj: dlist.h macros.h matrix.h vb.h xform.h

-lines.obj: bresenhm.h types.h ..\include\GL\gl.h config.h fixed.h dd.h

-lines.obj: context.h feedback.h interp.h lines.h dlist.h macros.h pb.h vb.h

-logic.obj: context.h types.h ..\include\GL\gl.h config.h fixed.h dd.h dlist.h

-logic.obj: logic.h macros.h pb.h

-masking.obj: alphabuf.h types.h ..\include\GL\gl.h config.h fixed.h dd.h

-masking.obj: context.h macros.h masking.h pb.h

-matrix.obj: accum.h types.h ..\include\GL\gl.h config.h fixed.h dd.h alphabuf.h

-matrix.obj: context.h depth.h dlist.h macros.h matrix.h stencil.h

-misc.obj: accum.h types.h ..\include\GL\gl.h config.h fixed.h dd.h alphabuf.h

-misc.obj: context.h depth.h macros.h masking.h misc.h stencil.h

-pb.obj: alpha.h types.h ..\include\GL\gl.h config.h fixed.h dd.h alphabuf.h

-pb.obj: blend.h depth.h fog.h logic.h macros.h masking.h pb.h scissor.h

-pb.obj: stencil.h texture.h

-pixel.obj: context.h types.h ..\include\GL\gl.h config.h fixed.h dd.h dlist.h

-pixel.obj: macros.h pixel.h image.h span.h stencil.h

-points.obj: context.h types.h ..\include\GL\gl.h config.h fixed.h dd.h

-points.obj: feedback.h dlist.h macros.h pb.h span.h vb.h

-pointers.obj: accum.h types.h ..\include\GL\gl.h config.h fixed.h dd.h alpha.h

-pointers.obj: attrib.h bitmap.h blend.h clip.h context.h copypix.h depth.h

-pointers.obj: draw.h drawpix.h enable.h eval.h feedback.h fog.h get.h light.h

-pointers.obj: lines.h dlist.h logic.h macros.h masking.h matrix.h misc.h

-pointers.obj: pixel.h points.h polygon.h readpix.h scissor.h stencil.h

-pointers.obj: teximage.h texobj.h texture.h varray.h vb.h vertex.h winpos.h

-polygon.obj: context.h types.h ..\include\GL\gl.h config.h fixed.h dd.h

-polygon.obj: macros.h polygon.h

-readpix.obj: alphabuf.h types.h ..\include\GL\gl.h config.h fixed.h dd.h

-readpix.obj: context.h depth.h feedback.h dlist.h macros.h image.h readpix.h

-readpix.obj: span.h stencil.h

-scissor.obj: context.h types.h ..\include\GL\gl.h config.h fixed.h dd.h

-scissor.obj: macros.h dlist.h scissor.h

-span.obj: alpha.h types.h ..\include\GL\gl.h config.h fixed.h dd.h alphabuf.h

-span.obj: blend.h depth.h fog.h logic.h macros.h masking.h scissor.h span.h

-span.obj: stencil.h texture.h

-stencil.obj: context.h types.h ..\include\GL\gl.h config.h fixed.h dd.h dlist.h

-stencil.obj: macros.h pb.h stencil.h

-teximage.obj: context.h types.h ..\include\GL\gl.h config.h fixed.h dd.h

-teximage.obj: image.h macros.h pixel.h span.h teximage.h

-texobj.obj: context.h types.h ..\include\GL\gl.h config.h fixed.h dd.h macros.h

-texobj.obj: teximage.h texobj.h

-texture.obj: context.h types.h ..\include\GL\gl.h config.h fixed.h dd.h dlist.h

-texture.obj: macros.h pb.h teximage.h texture.h

-triangle.obj: depth.h types.h ..\include\GL\gl.h config.h fixed.h dd.h

-triangle.obj: feedback.h macros.h span.h triangle.h vb.h tritemp.h

-varray.obj: draw.h types.h ..\include\GL\gl.h config.h fixed.h dd.h context.h

-varray.obj: enable.h dlist.h macros.h varray.h vb.h xform.h

-vb.obj: types.h ..\include\GL\gl.h config.h fixed.h dd.h vb.h

-vertex.obj: draw.h types.h ..\include\GL\gl.h config.h fixed.h dd.h light.h

-vertex.obj: dlist.h macros.h vb.h vertex.h

-winpos.obj: ..\include\GL\gl.h draw.h types.h config.h fixed.h dd.h dlist.h

-winpos.obj: macros.h winpos.h

-xform.obj: types.h ..\include\GL\gl.h config.h fixed.h dd.h xform.h

-glx.obj: ..\include\GL\gl.h ..\include\GL\glx.h ..\include\GL\xmesa.h context.h

-glx.obj: types.h config.h fixed.h dd.h macros.h xmesaP.h

-osmesa.obj: ..\include\GL\osmesa.h ..\include\GL\gl.h context.h types.h

-osmesa.obj: config.h fixed.h dd.h depth.h macros.h matrix.h vb.h tritemp.h

-xfonts.obj: ..\include\GL\gl.h ..\include\GL\xmesa.h macros.h xmesaP.h types.h

-xfonts.obj: config.h fixed.h dd.h context.h

-xmesa1.obj: ..\include\GL\xmesa.h ..\include\GL\gl.h xmesaP.h types.h config.h

-xmesa1.obj: fixed.h dd.h context.h macros.h matrix.h

-xmesa2.obj: ..\include\GL\xmesa.h ..\include\GL\gl.h macros.h types.h config.h

-xmesa2.obj: fixed.h dd.h xmesaP.h

-xmesa3.obj: bresenhm.h types.h ..\include\GL\gl.h config.h fixed.h dd.h depth.h

-xmesa3.obj: interp.h macros.h vb.h xmesaP.h ..\include\GL\xmesa.h tritemp.h

diff --git a/src/mesa/drivers/dos/dosmesa.c b/src/mesa/drivers/dos/dosmesa.c
deleted file mode 100644
index 6ee7291de1..0000000000
--- a/src/mesa/drivers/dos/dosmesa.c
+++ /dev/null
@@ -1,1542 +0,0 @@
-/* $Id: dosmesa.c,v 1.4 2001/03/03 20:33:29 brianp Exp $ */

-

-/*

- * Mesa 3-D graphics library

- * Version:  2.3

- * Copyright (C) 1995-1997  Brian Paul

- *

- * This library is free software; you can redistribute it and/or

- * modify it under the terms of the GNU Library General Public

- * License as published by the Free Software Foundation; either

- * version 2 of the License, or (at your option) any later version.

- *

- * This library is distributed in the hope that it will be useful,

- * but WITHOUT ANY WARRANTY; without even the implied warranty of

- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

- * Library General Public License for more details.

- *

- * You should have received a copy of the GNU Library General Public

- * License along with this library; if not, write to the Free

- * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.

- */

-

-

-/*

- * $Log: dosmesa.c,v $
- * Revision 1.4  2001/03/03 20:33:29  brianp
- * lots of gl_*() to _mesa_*() namespace clean-up
- *
- * Revision 1.3  2000/11/22 08:55:52  joukj
- *
- *
- *  Modified Files:
- *  	Mesa/src/Allegro/amesa.c Mesa/src/DOS/dosmesa.c
- *  	Mesa/src/FX/fxdd.c Mesa/src/FX/fxdrv.h
- *  	Mesa/src/FX/fxfastpath.c
- *  	Mesa/src/GGI/include/ggi/mesa/ggimesa.h
- *  	Mesa/src/OSmesa/osmesa.c Mesa/src/SVGA/svgamesa.c
- *  	Mesa/src/Trace/tr_control.c Mesa/src/Windows/wgl.c
- *  	Mesa/src/X/xmesaP.h Mesa/src/X86/3dnow.c Mesa/src/X86/katmai.c
- *  	Mesa/src/X86/x86.c
- *  Removed Files:
- *  	Mesa/src/mms_depend
- *
- *  Oops,... all files containing Caps in directory name or file name were
- *  missing in my types->mtypes commit.
- *
- * ----------------------------------------------------------------------
- *
- * Revision 1.2  2000/09/26 20:54:10  brianp
- * First batch of OpenGL SI related changes:
- * Renamed struct gl_context to struct __GLcontextRec.
- * Include glcore.h, setup GL imports/exports.
- * Replaced gl_ prefix with _mesa_ prefix in context.[ch] functions.
- * GLcontext's Visual field is no longer a pointer.
- *
- * Revision 1.1.1.1  1999/08/19 00:55:41  jtg
- * Imported sources
- *
- * Revision 1.2  1999/03/28 21:11:57  brianp
- * updated SetBuffer driver function
- *
- * Revision 1.1  1999/02/24 03:56:31  brianp
- * initial check-in
- *

- *
- * Revision 1.5  1997/06/19  22:00:00  Brian Paul

- * Removed all ColorShift stuff
- *

- * Revision 1.4  1997/06/03  19:00:00  Brian Paul

- * Replaced VB->Unclipped[] with VB->ClipMask[]

- *

- * Revision 1.3  1997/05/28  07:00:00  Phil Frisbie, Jr.

- * Now pass red/green/blue/alpha bits to gl_create_visual()

- * Fixed DJGPP mode 13 support.

- *

- * Revision 1.2  1996/12/08  16:13:45  Charlie

- * Added VESA support via Scitechs SVGA kit.

- *

- * Revision 1.1  1996/12/08  16:09:52  Charlie

- * Initial revision

- *

- */

-

-

-/*

- * DOS VGA/VESA/MGL/Mesa interface.

- *

- */

-

-/*

- *

- * TODO: (cw)

- *	 Improve the colour matcher for rgb non vesa modes, its pretty bad and incorrect

- *	 Keyboard interrupt.

- *  Comments and tidy up.

- *  Add support for VESA without SVGAKIT.

- *  DirectX Support.

- *  Better GLIDE Support.

- *  Clear up the #ifdef madness.

- */

-

-#ifdef DOSVGA

-

-#if defined(DOSVGA) && !defined(GLIDE) && defined(DJGPP) && !defined(UNIVBE) && !defined(MGL)

-

-/* Should help cut down on the crazy #if`s */

-#define MODE13 1

-

-#else

-#undef MODE13

-#endif

-

-#include <stdio.h>

-#include <stdlib.h>

-#include <string.h>

-#include <string.h>

-#include <dos.h>

-

-#ifdef DJGPP

-#include <go32.h>

-#endif

-

-#ifdef MGL

-#include <mgraph.h>

-#endif

-

-#include "GL/DOSmesa.h"

-#include "context.h"

-#include "matrix.h"

-#include "mtypes.h"
-

-#ifdef GLIDE

-

-static void glideshutdown( void );

-#include "vb.h"

-#include "glide.h"

-

-/* the glide modes available, set one */

-

-//#define GLIDE_MODE GR_RESOLUTION_

-#define GLIDE_MODE GR_RESOLUTION_800x600

-//#define GLIDE_MODE GR_RESOLUTION_640x480

-

-static GrVertex gr_vtx,gr_vtx1,gr_vtx2;

-

-#endif

-

-#ifdef UNIVBE

-/* You get this file from Scitechs VESA development kit */

-#include "svga.h"

-

-/*

-   Set these to the VESA mode you require, the first is for 256 colour modes,

-   the other is High colour modes, they must both be the same XRes and YRes.

- */

-

-#define VESA_256COLOUR_MODE 0x11c

-#define VESA_HICOLOUR_MODE 0x11f

-

-#endif

-

-struct DOSmesa_context {

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

-   GLvisual *gl_vis;				/* describes the color buffer */

-   GLframebuffer *gl_buffer;	/* the ancillary buffers */

-   GLuint index;					/* current color index */

-   GLint red, green, blue;		/* current rgb color */

-   GLint width, height;			/* size of color buffer */

-   GLint depth;					/* bits per pixel (8,16,24 or 32) */

-};

-

-static DOSMesaContext DOSMesa = NULL;    /* the current context */

-

-#ifdef UNIVBE

-SV_devCtx *DC=NULL;

-int useLinear = TRUE;

-SV_modeInfo *mi=NULL;

-unsigned long modeNumber = 0;

-

-int activePage = 0;

-int visualPage = 1;

-

-#endif

-

-#if defined(MODE13)

-

-/* DOSVGA With no UniVBE support */

-

-unsigned char *video_buffer;

-

-#define VID_BUF(x,y) *(video_buffer+x+(y*320))

-

-#if defined(__WATCOMC__) && defined(__386__) && defined(__DOS__)

-

-void setupcopy(void);

-void copyscr(void);

-

-/* Watcom C specfic, screen copy and clear */

-

-#pragma aux setupcopy = \

-	".386P"\

-	"push ebp" \

-	"mov esi,video_buffer" \

-	"mov edi,0xa0000" \

-	"mov ecx,2000" \

-	"xor ebp,ebp";

-

-#pragma aux copyscr = \

-	".386P" \

-	"lop1: mov eax,[esi]"\

-	"mov ebx,[esi+4]"\

-	"mov edx,[esi+8]"\

-	"mov [edi],eax"\

-	"mov eax,[esi+12]"\

-	"mov dword ptr [esi],ebp"\

-	"mov dword ptr [esi+4],ebp"\

-	"mov dword ptr [esi+8],ebp"\

-	"mov dword ptr [esi+12],ebp"\

-	"mov [edi+4],ebx"\

-	"mov [edi+8],edx"\

-	"mov [edi+12],eax"\

-	"mov eax,[esi+16]"\

-	"mov ebx,[esi+4+16]"\

-	"mov edx,[esi+8+16]"\

-	"mov [edi+16],eax"\

-	"mov eax,[esi+12+16]"\

-	"mov dword ptr [esi+16],ebp"\

-	"mov dword ptr [esi+4+16],ebp"\

-	"mov dword ptr [esi+8+16],ebp"\

-	"mov dword ptr [esi+12+16],ebp"\

-	"mov [edi+4+16],ebx"\

-	"mov [edi+8+16],edx"\

-	"mov [edi+12+16],eax"\

-	"add esi,32"\

-	"add edi,32"\

-	"dec ecx"\

-	"jnz lop1"\

-	"pop ebp"\

-	modify exact [edi esi eax ebx ecx] ;

-

-#endif // WATCOM

-

-#endif // MODE13

-

-/*

- * Convert Mesa window Y coordinate to VGA screen Y coordinate:

- */

-#define FLIP(Y)  (DOSMesa->height-(Y)-1)

-

-unsigned short vga_cindex = 32768 ;

-

-static points_func choose_points_function( void );

-static line_func choose_line_function( void );

-static triangle_func choose_polygon_function( void );

-static void fast_tri(GLcontext *ctx,GLuint v0, GLuint v1, GLuint v2, GLuint pv );

-

-static points_func choose_points_function( void )

-{

-	return NULL;

-}

-

-static line_func choose_line_function( void )

-{

-	return NULL;

-}

-

-static triangle_func choose_triangle_function( void )

-{

-	#if defined(MODE13)

-		return	NULL;

-	#endif

-

-	#if defined(GLIDE)

-		return fast_tri;

-	#endif

-

-	return	NULL;

-}

-

-

-#if defined(MODE13)

-

-void setgfxmode(void);

-void settextmode(void);

-

-#ifndef DJGPP

-#pragma aux setgfxmode = \

-	"mov	ax,13h" \

-	"int	10h" \

-	modify [eax];

-

-#pragma aux settextmode = \

-	"mov	ax,3h" \

-	"int	10h" \

-	modify [eax];

-#else

-void setgfxmode(void)

-{

-	union REGS in_regs,out_regs;

-

-	in_regs.x.ax = 0x13;

-	int386(0x10,&in_regs,&out_regs);

-}

-

-void settextmode(void)

-{

-	union REGS in_regs,out_regs;

-

-	in_regs.x.ax = 0x3;

-	int386(0x10,&in_regs,&out_regs);

-}

-

-#endif

-

-int set_video_mode(unsigned short x,unsigned short y,char mode)

-{

-	setgfxmode();

-	return 1;	/* likelyhood of this failing is very small */

-}

-

-void restore_video_mode(void)

-{

-	settextmode();

-}

-

-int vga_getcolors(void)

-{

-	return vga_cindex;

-}

-

-int vga_getxdim(void)

-{

-	return 320;

-}

-

-int vga_getydim(void)

-{

-	return 200;

-}

-

-static unsigned short num_rgb_alloc = 1; /* start from 1, zero is black */

-

-/* an unlikely colour */

-static unsigned char last_r=1,last_g=255,last_b=99;

-

-extern void set_onecolor(int index,int R,int G,int B);

-

-static unsigned char rgbtable[64][64][64];

-

-void vga_setrgbcolor(int r,int g,int b)

-{

-

-/*

- * make this into a translation table

- */

-

-	DOSMesa->red = r;

-	DOSMesa->green = g ;

-	DOSMesa->blue = b ;

-

-	r/=4; g/=4; b/=4;

-

-	if( (r == last_r) && (g == last_g) && (b == last_b) ) return;

-

-	last_r = r ;

-	last_g = g ;

-	last_b = b ;

-

-	if(r+g+b == 0 ) {

-		DOSMesa->index = 0 ;

-		return ;

-	}

-

-	if( rgbtable[r][g][b] == 0 ) {

-		/* not allocated yet */

-		if(num_rgb_alloc<256) {

-			DOSMesa->index = num_rgb_alloc;

-			set_onecolor(num_rgb_alloc,r,g,b);

-			rgbtable[r][g][b] = num_rgb_alloc;

-			num_rgb_alloc++;

-			return;

-

-		} else {

-			/* need to search for a close colour */

-			{

-				unsigned short pass ;

-

-				for(pass=0;pass<64;pass++) {

-					if(r-pass>0) {

-						if( rgbtable[r-pass][g][b] !=0 ) {

-							rgbtable[r][g][b] = rgbtable[r-pass][g][b];

-							DOSMesa->index = rgbtable[r-pass][g][b];

-							return;

-						}

-					}

-					if(r+pass<64) {

-						if( rgbtable[r+pass][g][b] !=0 ) {

-							rgbtable[r][g][b] = rgbtable[r+pass][g][b];

-							DOSMesa->index = rgbtable[r+pass][g][b];

-							return;

-						}

-					}

-				}

-			}

-			rgbtable[r][g][b] = rand()%255;

-		}

-	}

-	DOSMesa->index = rgbtable[r][g][b];

-}

-

-#if defined(DJGPP)

-static int dos_seg;

-#endif

-

-void vga_clear(void)

-{

-

-/* Check if we`re using watcom and DOS */

-#if defined(__WATCOMC__) && defined(__386__) && defined(__DOS__)

-	setupcopy();

-	copyscr();

-#else

-

-#if defined (DJGPP)

-

-

-	asm ("

-		pusha

-		pushw	%es

-

-		movw	_dos_seg, %es

-

-		movl	_video_buffer, %esi

-		movl	$0xa0000, %edi

-

-		movl	$64000, %ecx

-

-		rep	; movsb

-

-		popw	%es

-		popa

-	");

-

-#else

-

-	/* copy the RAM buffer to the Video memory */

-	memcpy((unsigned char *)0xa0000,video_buffer, vga_getxdim()*vga_getydim() );

-

-#endif //DJGPP

-

-	/* clear the RAM buffer */

-	memset(video_buffer,0, vga_getxdim()*vga_getydim() );

-

-#endif //WATCOMC

-

-}

-

-#ifndef DEBUG

-#define vga_drawpixel(x,y) { VID_BUF(x,y) = DOSMesa->index; }

-#else

-void vga_drawpixel(x,y)

-{

-	VID_BUF(x,y) = DOSMesa->index;

-}

-#endif

-

-int vga_getpixel(int x,int y)

-{

-	return 1;

-}

-

-void vga_flip(void)

-{

-

-}

-

-void vga_setcolor(int index)

-{

-	/* does something, what i`ve no idea */

-	DOSMesa->index = index;

-

-}

-

-#endif

-

-#if defined(UNIVBE)

-

-/* UniVBE VESA support */

-

-void set_video_mode(unsigned short x,unsigned short y,char mode)

-{

-	if( setup_vesa_mode(x,y,mode) == FALSE ) {

-		fprintf(stderr,"VESA: Set mode failed\n");

-		exit(1);

-	}

-}

-

-/*

-   This is problematic as we don`t know what resolution the user program

-   wants when we reach here. This is why the 256 colour and HiColour modes

-	should be the same resolution, perhaps i`ll make this an environment

-	variable

- */

-

-

-void check_mi(void)

-{

-	if(mi!=0) return;

-

-	if(DC==NULL) {

-		DC = SV_init( TRUE );

-	}

-

-	if(modeNumber == 0 ) {

-		modeNumber = VESA_HICOLOUR_MODE;

-	}

-

-	SV_getModeInfo(modeNumber,mi);

-

-	return;

-}

-

-int setup_vesa_mode(short height,short width,short depth)

-{

-	if(DC==NULL) {

-		DC = SV_init( TRUE );

-		/* how many bits per pixel */

-		if( depth == 0)

-			modeNumber = VESA_256COLOUR_MODE;

-		else

-			modeNumber = VESA_HICOLOUR_MODE;

-	}

-

-	/* Check if correct VESA Version is available */

-	if( !DC || DC->VBEVersion < 0x0102) {

-		fprintf(stderr,"Require a VESA VBE version 1.2 or higher\n");

-		return FALSE;

-	}

-

-	/* Check for LFB Supprt */

-	if(DC->VBEVersion < 0x0200 ) {

-		useLinear = FALSE;

-	} else {

-		useLinear = TRUE ;

-	}

-

- 	/* Get desired mode info */

-   if(!SV_getModeInfo( modeNumber, mi))

-		return FALSE;

-

-	/* Set VESA mode */

-	if(!SV_setMode(modeNumber | svMultiBuffer, FALSE, TRUE, mi->NumberOfPages) )

-		return FALSE;

-

-	return TRUE;

-}

-

-void restore_video_mode(void)

-{

-	SV_restoreMode();

-}

-

-void vga_clear(void)

-{

-	SV_clear(0);

-}

-

-void vga_flip(void)

-{

-	activePage = 1-activePage;

-	visualPage = 1-activePage;

-

-	SV_setActivePage(activePage);

-

-	/*

-	   Change false to true if you`re getting flickering

-	   even in double buffer mode, ( sets wait for Vertical retrace  )

-	*/

-	SV_setVisualPage(visualPage,false);

-}

-

-int vga_getcolors(void)

-{

-	check_mi();

-	switch ( mi->BitsPerPixel ) {

-		case 8:

-			return 256;

-		case 15:

-		case 16:

-			return 32768;

-		default:

-			return 64000;

-	 }

-}

-

-int vga_getxdim(void)

-{

-	check_mi();

-	return mi->XResolution;

-}

-

-int vga_getydim(void)

-{

-	check_mi();

-	return mi->YResolution;

-}

-

-unsigned long current_color = 255;

-

-void vga_setrgbcolor(int r,int g,int b)

-{

-	DOSMesa->red = r;

-	DOSMesa->green = g ;

-	DOSMesa->blue = b ;

-	current_color = SV_rgbColor(r,g,b);

-}

-

-void vga_setcolor(int index)

-{

-	DOSMesa->index = index;

-	current_color = index;

-}

-

-void vga_drawpixel(x,y)

-{

-	SV_putPixel(x,y,current_color);

-}

-

-/* TODO: */

-int vga_getpixel(x,y)

-{

-/*	return (int)SV_getPixel(x,y); */

-	fprintf(stderr,"vga_getpixel: Not implemented yet\n");

-	return 1;

-}

-

-/* End of UNIVBE section */

-#endif

-

-/* Scitechs MegaGraphicsLibrary http://www.scitechsoft.com/ */

-

-#if defined(MGL)

-

-/* MGL support */

-struct MI {

-	unsigned short BitsPerPixel;

-	unsigned long XResolution;

-	unsigned long YResolution;

-};

-

-struct MI*mi;

-

-static MGLDC*DC;

-static int activePage = 0;

-static int visualPage = 1;

-static int modeNumber = 0;

-

-void set_video_mode(unsigned short xres,unsigned short yres,char mode)

-{

-    int     i,driver = grDETECT,dmode = grDETECT;

-    event_t evt;

-

-	/* Start the MGL with only the SVGA 16m driver active */

-	MGL_registerDriver(MGL_SVGA16NAME,SVGA16_driver);

-	if (!MGL_init(&driver,&dmode,"..\\..\\"))

-		MGL_fatalError(MGL_errorMsg(MGL_result()));

-	if ((DC = MGL_createDisplayDC(false)) == NULL)

-		MGL_fatalError(MGL_errorMsg(MGL_result()));

-	MGL_makeCurrentDC(DC);

-}

-

-/*

-   This is problematic as we don`t know what resolution the user program

-   wants when we reach here. This is why the 256 colour and HiColour modes

-	should be the same resolution, perhaps i`ll make this an environment

-	variable

- */

-

-#define MGL_HICOLOUR_MODE 0

-

-

-void check_mi(void)

-{

-	if(mi!=0) return;

-

-	if(DC==NULL) {

-//		DC = SV_init( TRUE );

-	}

-

-	if(modeNumber == 0 ) {

-		modeNumber = MGL_HICOLOUR_MODE;

-	}

-

-//	SV_getModeInfo(modeNumber,mi);

-

-	return;

-}

-

-void restore_video_mode(void)

-{

-	MGL_exit();

-}

-

-void vga_clear(void)

-{

-	MGL_clearDevice();

-}

-

-void vga_flip(void)

-{

-	activePage = 1-activePage;

-	visualPage = 1-activePage;

-

-//	SV_setActivePage(activePage);

-

-	/*

-	   Change false to true if you`re getting flickering

-	   even in double buffer mode, ( sets wait for Vertical retrace  )

-	*/

-//	SV_setVisualPage(visualPage,false);

-}

-

-int vga_getcolors(void)

-{

-	check_mi();

-	switch ( mi->BitsPerPixel ) {

-		case 8:

-			return 256;

-		case 15:

-		case 16:

-			return 32768;

-		default:

-			return 64000;

-	 }

-}

-

-int vga_getxdim(void)

-{

-	check_mi();

-	return mi->XResolution;

-}

-

-int vga_getydim(void)

-{

-	check_mi();

-	return mi->YResolution;

-}

-

-unsigned long current_color = 255;

-

-void vga_setrgbcolor(int r,int g,int b)

-{

-	DOSMesa->red = r;

-	DOSMesa->green = g ;

-	DOSMesa->blue = b ;

-	current_color = MGL_rgbColor(DC,r,g,b);

-}

-

-void vga_setcolor(int index)

-{

-	DOSMesa->index = index;

-	current_color = index;

-}

-

-void vga_drawpixel(x,y)

-{

-	MGL_pixelCoord(x,y);

-}

-

-/* TODO: */

-int vga_getpixel(x,y)

-{

-/*	return (int)SV_getPixel(x,y); */

-	fprintf(stderr,"vga_getpixel: Not implemented yet\n");

-	return 1;

-}

-

-/* End of UNIVBE section */

-#endif

-

-#ifdef GLIDE

-

-/* GLIDE support */

-

-static GrHwConfiguration hwconfig;

-

-void set_video_mode(unsigned short x,unsigned short y,char mode)

-{

-	grGlideInit();

-	if( grSstQueryHardware( &hwconfig ) ) {

-		grSstSelect( 0 ) ;

-		if( !grSstOpen( GLIDE_MODE,

-							GR_REFRESH_60Hz,

-							GR_COLORFORMAT_ABGR,

-							GR_ORIGIN_UPPER_LEFT,

-							GR_SMOOTHING_ENABLE,

-							2 ) ) {

-			fprintf(stderr,"Detected 3DFX board, but couldn`t initialize!");

-			exit(1);

-		}

-

-		grBufferClear( 0, 0, GR_WDEPTHVALUE_FARTHEST);

-

-		grDisableAllEffects();

-		atexit( glideshutdown );

-

-//		guColorCombineFunction( GR_COLORCOMBINE_ITRGB );

-//		grTexCombineFunction( GR_TMU0, GR_TEXTURECOMBINE_ZERO);

-	}

-}

-

-void restore_video_mode(void)

-{

-}

-

-static void glideshutdown( void )

-{

-	grGlideShutdown() ;

-}

-

-void vga_clear(void)

-{

-	grBufferSwap(0);

-	grBufferClear( 0, 0, GR_WDEPTHVALUE_FARTHEST);

-}

-

-void vga_flip(void)

-{

-}

-

-int vga_getcolors(void)

-{

-	return 32768;

-}

-

-int vga_getxdim(void)

-{

-#if GLIDE_MODE == GR_RESOLUTION_800x600

-		return 800;

-#else

-		return 640;

-#endif

-}

-

-int vga_getydim(void)

-{

-#if GLIDE_MODE == GR_RESOLUTION_800x600

-		return 600;

-#else

-		return 480;

-#endif

-}

-

-unsigned long current_color = 255;

-

-void vga_setrgbcolor(int r,int g,int b)

-{

-	DOSMesa->red = r;

-	DOSMesa->green = g ;

-	DOSMesa->blue = b ;

-}

-

-void vga_setcolor(int index)

-{

-	DOSMesa->index = index;

-}

-

-void vga_drawpixel(x,y)

-{

-

-	gr_vtx.x = x;

-	gr_vtx.y = y;

-	gr_vtx.z = 0;

-	gr_vtx.r	= DOSMesa->red;

-	gr_vtx.g	= DOSMesa->green;

-	gr_vtx.b	= DOSMesa->blue;

-

-	grDrawPoint( &gr_vtx );

-}

-

-static void fast_tri(GLcontext *ctx,GLuint v0, GLuint v1, GLuint v2, GLuint pv )

-{

-   struct vertex_buffer *VB = ctx->VB;

-

-	gr_vtx.z = 0;

-	gr_vtx1.z = 0;

-	gr_vtx2.z = 0;

-

-   if (VB->MonoColor) {

-	  	gr_vtx.r = DOSMesa->red;

-   	gr_vtx.g = DOSMesa->green;

-   	gr_vtx.b = DOSMesa->blue;

-   	gr_vtx1.r = DOSMesa->red;

-   	gr_vtx1.g = DOSMesa->green;

-   	gr_vtx1.b = DOSMesa->blue;

-   	gr_vtx2.r = DOSMesa->red;

-   	gr_vtx2.g = DOSMesa->green;

-   	gr_vtx2.b = DOSMesa->blue;

-   } else {

-		if(ctx->Light.ShadeModel == GL_SMOOTH ) {

-		  	gr_vtx.r  = FixedToInt( VB->Color[v0][0] );

-		  	gr_vtx.g  = FixedToInt( VB->Color[v0][1] );

-		  	gr_vtx.b  = FixedToInt( VB->Color[v0][2] );

-

-		  	gr_vtx1.r = FixedToInt( VB->Color[v1][0] );

-		  	gr_vtx1.g = FixedToInt( VB->Color[v1][1] );

-		  	gr_vtx1.b = FixedToInt( VB->Color[v1][2] );

-

-		  	gr_vtx2.r = FixedToInt( VB->Color[v2][0] );

-		  	gr_vtx2.g = FixedToInt( VB->Color[v2][1] );

-		  	gr_vtx2.b = FixedToInt( VB->Color[v2][2] );

-		} else {

-		  	gr_vtx.r  = VB->Color[pv][0];

-		  	gr_vtx.g  = VB->Color[pv][1];

-		  	gr_vtx.b  = VB->Color[pv][2];

-

-		  	gr_vtx1.r = VB->Color[pv][0];

-		  	gr_vtx1.g = VB->Color[pv][1];

-		  	gr_vtx1.b = VB->Color[pv][2];

-

-		  	gr_vtx2.r = VB->Color[pv][0];

-		  	gr_vtx2.g = VB->Color[pv][1];

-		  	gr_vtx2.b = VB->Color[pv][2];

-		}

-	}

-

-   gr_vtx.x  =       (VB->Win[v0][0] );

-   gr_vtx.y  = FLIP( (VB->Win[v0][1] ) );

-   gr_vtx1.x =       (VB->Win[v1][0] );

-   gr_vtx1.y = FLIP( (VB->Win[v1][1] ) );

-   gr_vtx2.x =       (VB->Win[v2][0] );

-   gr_vtx2.y = FLIP( (VB->Win[v2][1] ) );

-

-	if(gr_vtx.x <0 || gr_vtx.x > 639 )

-		return;

-	if(gr_vtx1.x <0 || gr_vtx1.x > 639 )

-		return;

-	if(gr_vtx2.x <0 || gr_vtx2.x > 639 )

-		return;

-

-	if(gr_vtx.y <0 || gr_vtx.y > 479 )

-		return;

-	if(gr_vtx1.y <0 || gr_vtx1.y > 479 )

-		return;

-	if(gr_vtx2.y <0 || gr_vtx2.y > 479 )

-		return;

-

-	grDrawTriangle( &gr_vtx,&gr_vtx1,&gr_vtx2);

-}

-

-void fast_plot(GLcontext *ctx,GLuint first,GLuint last )

-{

-	struct vertex_buffer *VB = ctx->VB;

-	register GLuint i;

-

-	if(VB->MonoColor) {

-		/* all same color */

-

-		gr_vtx.r = DOSMesa->red;

-		gr_vtx.g = DOSMesa->green;

-		gr_vtx.b = DOSMesa->blue;

-

-		for(i=first;i<last;i++) {

-			if(VB->ClipMask[i]==0) {

-				gr_vtx.x = VB->Win[i][0];

-				gr_vtx.y = FLIP(VB->Win[i][1]);

-			}

-		}

-	}

-}

-

-/* TODO: */

-int vga_getpixel(x,y)

-{

-/*	return (int)SV_getPixel(x,y); */

-	fprintf(stderr,"vga_getpixel: Not implemented yet\n");

-	return 1;

-}

-

-/* End of GLIDE section */

-

-#endif // GLIDE

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

-/*****                 Miscellaneous functions                    *****/

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

-

-

-static void get_buffer_size( GLcontext *ctx, GLuint *width, GLuint *height )

-{

-   *width = DOSMesa->width = vga_getxdim();

-   *height = DOSMesa->height = vga_getydim();

-}

-

-

-/* Set current color index */

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

-{

-   DOSMesa->index = index;

-   /*vga_setcolor( index );*/

-}

-

-

-/* Set current drawing color */

-static void set_color( GLcontext *ctx,

-                       GLubyte red, GLubyte green,

-                       GLubyte blue, GLubyte alpha )

-{

-   DOSMesa->red = red;

-   DOSMesa->green = green;

-   DOSMesa->blue = blue;

-   vga_setrgbcolor( red, green, blue );

-}

-

-

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

-{

-   /* TODO: Implements glClearIndex() */

-}

-

-

-static void clear_color( GLcontext *ctx,

-                         GLubyte red, GLubyte green,

-                         GLubyte blue, GLubyte alpha )

-{

-   /* TODO: Implements glClearColor() */

-}

-

-

-static void clear( GLcontext *ctx,

-                   GLboolean all,

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

-{

-   vga_clear();

-}

-

-

-static GLboolean set_buffer( GLcontext *ctx,

-                             GLenum mode )

-{

-   /* TODO: implement double buffering and use this function to select */

-   /* between front and back buffers. */

-   if (buffer == GL_FRONT_LEFT)

-      return GL_TRUE;

-   else if (buffer == GL_BACK_LEFT)

-      return GL_TRUE;

-   else

-      return GL_FALSE;

-}

-

-

-

-

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

-/*****            Write spans of pixels                           *****/

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

-

-

-static void write_index_span( GLcontext *ctx,

-                              GLuint n, GLint x, GLint y,

-                              const GLuint index[],

-                              const GLubyte mask[] )

-{

-   int i;

-   y = FLIP(y);

-#ifdef UNIVBE

-	SV_beginPixel();

-#endif

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

-      if (mask[i]) {

-#ifdef UNIVBE

-		SV_putPixelFast(x,y,current_color);

-#else

-         vga_setcolor( index[i] );

-         vga_drawpixel( x, y );

-#endif

-      }

-   }

-

-#ifdef UNIVBE

-	SV_endPixel();

-#endif

-

-}

-

-

-

-static void write_monoindex_span( GLcontext *ctx,

-                                  GLuint n, GLint x, GLint y,

-                                  const GLubyte mask[] )

-{

-   int i;

-   y = FLIP(y);

-   /* use current color index */

-   vga_setcolor( DOSMesa->index );

-#ifdef UNIVBE

-	SV_beginPixel();

-#endif

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

-      if (mask[i]) {

-#ifdef UNIVBE

-			SV_putPixelFast(x,y,current_color);

-#else

-         vga_drawpixel( x, y );

-#endif

-      }

-   }

-#ifdef UNIVBE

-	SV_endPixel();

-#endif

-}

-

-

-

-static void write_color_span( GLcontext *ctx,

-                              GLuint n, GLint x, GLint y,

-                              const GLubyte red[], const GLubyte green[],

-                              const GLubyte blue[], const GLubyte alpha[],

-                              const GLubyte mask[] )

-{

-   int i;

-   y=FLIP(y);

-#ifdef UNIVBE

-	SV_beginPixel();

-#endif

-   if (mask) {

-      /* draw some pixels */

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

-         if (mask[i]) {

-#ifdef UNIVBE

-				SV_putPixelFast(x,y,SV_rgbColor(red[i], green[i], blue[i]) );

-#else

-            vga_setrgbcolor( red[i], green[i], blue[i] );

-            vga_drawpixel( x, y );

-#endif

-         }

-      }

-   }

-   else {

-      /* draw all pixels */

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

-#ifdef UNIVBE

-			SV_putPixelFast(x,y,SV_rgbColor(red[i], green[i], blue[i]) );

-#else

-         vga_setrgbcolor( red[i], green[i], blue[i] );

-         vga_drawpixel( x, y );

-#endif

-      }

-   }

-#ifdef UNIVBE

-	SV_endPixel();

-#endif

-}

-

-

-

-static void write_monocolor_span( GLcontext *ctx,

-                                  GLuint n, GLint x, GLint y,

-                                  const GLubyte mask[])

-{

-   int i;

-   y=FLIP(y);

-#ifdef UNIVBE

-	SV_beginPixel();

-#endif

-   /* use current rgb color */

-   vga_setrgbcolor( DOSMesa->red, DOSMesa->green, DOSMesa->blue );

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

-      if (mask[i]) {

-#ifdef UNIVBE

-			SV_putPixelFast(x,y,current_color);

-#else

-         vga_drawpixel( x, y );

-#endif

-      }

-   }

-#ifdef UNIVBE

-	SV_endPixel();

-#endif

-}

-

-

-

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

-/*****                 Read spans of pixels                       *****/

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

-

-

-static void read_index_span( GLcontext *ctx,

-                             GLuint n, GLint x, GLint y, GLuint index[])

-{

-   int i;

-   y = FLIP(y);

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

-      index[i] = vga_getpixel( x, y );

-   }

-}

-

-

-

-static void read_color_span( GLcontext *ctx,

-                             GLuint n, GLint x, GLint y,

-                             GLubyte red[], GLubyte green[],

-                             GLubyte blue[], GLubyte alpha[] )

-{

-   int i;

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

-      /* TODO */

-   }

-}

-

-

-

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

-/*****                  Write arrays of pixels                    *****/

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

-

-

-static void write_index_pixels( GLcontext *ctx,

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

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

-{

-   int i;

-#ifdef UNIVBE

-	SV_beginPixel();

-#endif

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

-      if (mask[i]) {

-#ifdef UNIVBE

-			SV_putPixelFast(x[i], FLIP(y[i]), index[i] );

-#else

-         vga_setcolor( index[i] );

-         vga_drawpixel( x[i], FLIP(y[i]) );

-#endif

-      }

-   }

-#ifdef UNIVBE

-	SV_endPixel();

-#endif

-}

-

-

-

-static void write_monoindex_pixels( GLcontext *ctx,

-                                    GLuint n,

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

-                                    const GLubyte mask[] )

-{

-   int i;

-   /* use current color index */

-   vga_setcolor( DOSMesa->index );

-#ifdef UNIVBE

-	SV_beginPixel();

-#endif

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

-      if (mask[i]) {

-#ifdef UNIVBE

-			SV_putPixelFast(x[i], FLIP(y[i]), DOSMesa->index);

-#else

-         vga_drawpixel( x[i], FLIP(y[i]) );

-#endif

-      }

-   }

-#ifdef UNIVBE

-	SV_endPixel();

-#endif

-}

-

-

-

-static void write_color_pixels( GLcontext *ctx,

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

-                                const GLubyte r[], const GLubyte g[],

-                                const GLubyte b[], const GLubyte a[],

-                                const GLubyte mask[] )

-{

-   int i;

-#ifdef UNIVBE

-	SV_beginPixel();

-#endif

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

-      if (mask[i]) {

-#ifdef UNIVBE

-			SV_putPixelFast(x[i], FLIP(y[i]), SV_rgbColor(r[i], g[i], b[i]) );

-#else

-         vga_setrgbcolor( r[i], g[i], b[i] );

-         vga_drawpixel( x[i], FLIP(y[i]) );

-#endif

-      }

-   }

-#ifdef UNIVBE

-	SV_endPixel();

-#endif

-}

-

-static void write_monocolor_pixels( GLcontext *ctx,

-                                    GLuint n,

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

-                                    const GLubyte mask[] )

-{

-   int i;

-   /* use current rgb color */

-   vga_setrgbcolor( DOSMesa->red, DOSMesa->green, DOSMesa->blue );

-#ifdef UNIVBE

-	SV_beginPixel();

-#endif

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

-      if (mask[i]) {

-#ifdef UNIVBE

-			SV_putPixelFast(x[i], FLIP(y[i]), current_color );

-#else

-         vga_drawpixel( x[i], FLIP(y[i]) );

-#endif

-      }

-   }

-#ifdef UNIVBE

-	SV_endPixel();

-#endif

-}

-

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

-/*****                   Read arrays of pixels                    *****/

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

-

-/* Read an array of color index pixels. */

-static void read_index_pixels( GLcontext *ctx,

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

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

-{

-   int i;

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

-      index[i] = vga_getpixel( x[i], FLIP(y[i]) );

-   }

-}

-

-

-

-static void read_color_pixels( GLcontext *ctx,

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

-                               GLubyte red[], GLubyte green[],

-                               GLubyte blue[], GLubyte alpha[],

-                               const GLubyte mask[] )

-{

-   /* TODO */

-}

-

-static void DOSmesa_setup_DD_pointers( GLcontext *ctx )

-{

-   /* Initialize all the pointers in the DD struct.  Do this whenever */

-   /* a new context is made current or we change buffers via set_buffer! */

-

-   ctx->Driver.UpdateState = DOSmesa_setup_DD_pointers;

-

-   ctx->Driver.ClearIndex = clear_index;

-   ctx->Driver.ClearColor = clear_color;

-   ctx->Driver.Clear = clear;

-

-   ctx->Driver.Index = set_index;

-   ctx->Driver.Color = set_color;

-

-   ctx->Driver.SetBuffer = set_buffer;

-   ctx->Driver.GetBufferSize = get_buffer_size;

-

-   ctx->Driver.PointsFunc = choose_points_function();

-   ctx->Driver.LineFunc = choose_line_function();

-   ctx->Driver.TriangleFunc = choose_triangle_function();

-

-

-   /* Pixel/span writing functions: */

-   /* TODO: use different funcs for 8, 16, 32-bit depths */

-   ctx->Driver.WriteColorSpan       = write_color_span;

-   ctx->Driver.WriteMonocolorSpan   = write_monocolor_span;

-   ctx->Driver.WriteColorPixels     = write_color_pixels;

-   ctx->Driver.WriteMonocolorPixels = write_monocolor_pixels;

-   ctx->Driver.WriteIndexSpan       = write_index_span;

-   ctx->Driver.WriteMonoindexSpan   = write_monoindex_span;

-   ctx->Driver.WriteIndexPixels     = write_index_pixels;

-   ctx->Driver.WriteMonoindexPixels = write_monoindex_pixels;

-

-   /* Pixel/span reading functions: */

-   /* TODO: use different funcs for 8, 16, 32-bit depths */

-   ctx->Driver.ReadIndexSpan = read_index_span;

-   ctx->Driver.ReadColorSpan = read_color_span;

-   ctx->Driver.ReadIndexPixels = read_index_pixels;

-   ctx->Driver.ReadColorPixels = read_color_pixels;

-}

-

-/*

- * Create a new VGA/Mesa context and return a handle to it.

- */

-DOSMesaContext DOSMesaCreateContext( void )

-{

-   DOSMesaContext ctx;

-   GLboolean rgb_flag;

-   GLfloat redscale, greenscale, bluescale, alphascale;

-   GLboolean db_flag = GL_FALSE;

-   GLboolean alpha_flag = GL_FALSE;

-   int colors;

-   GLint index_bits;

-   GLint redbits, greenbits, bluebits, alphabits;

-

-#if !defined(UNIVBE) && !defined(GLIDE) && !defined(MGL)

-	video_buffer = (unsigned char *) malloc( vga_getxdim() * vga_getydim() );

-

-	memset(video_buffer,0, vga_getxdim() * vga_getydim() );

-

-	memset(rgbtable,0,sizeof( rgbtable ) );

-#endif

-

-#if defined( DJGPP ) && !defined(UNIVBE) && !defined(GLIDE)

-	dos_seg = _go32_conventional_mem_selector();

-#endif

-

-   /* determine if we're in RGB or color index mode */

-   colors = vga_getcolors();

-   if (colors==32768) {

-      rgb_flag = GL_TRUE;

-      redscale = greenscale = bluescale = alphascale = 255.0;

-      redbits = greenbits = bluebits = 8;

-      alphabits = 0;

-      index_bits = 0;

-   }

-   else if (colors==256) {

-      rgb_flag = GL_FALSE;

-      redscale = greenscale = bluescale = alphascale = 0.0;

-      redbits = greenbits = bluebits = alphabits = 0;

-      index_bits = 8;

-   }

-   else {

-		restore_video_mode();

-      fprintf(stderr,"[%d] >16 bit color not implemented yet!\n",colors);

-      return NULL;

-   }

-

-   ctx = (DOSMesaContext) calloc( 1, sizeof(struct DOSmesa_context) );

-   if (!ctx) {

-      return NULL;

-   }

-

-   ctx->gl_vis = _mesa_create_visual( rgb_flag,

-                                      db_flag,

-                                      GL_FALSE, /* stereo */

-                                      redbits,

-                                      greenbits,

-                                      bluebits,

-                                      alphabits,

-                                      index_bits,

-                                      16,   /* depth_size */

-                                      8,    /* stencil_size */

-                                      16, 16, 16, 16,  /* accum_size */

-                                      1 );
-

-   ctx->gl_ctx = _mesa_create_context( ctx->gl_vis,

-                                    NULL,  /* share list context */

-                                    (void *) ctx

-                                  );

-

-   ctx->gl_buffer = _mesa_create_framebuffer( ctx->gl_vis );

-

-   ctx->index = 1;

-   ctx->red = ctx->green = ctx->blue = 255;

-

-   ctx->width = ctx->height = 0;  /* temporary until first "make-current" */

-

-   return ctx;

-}

-

-/*

- * Destroy the given VGA/Mesa context.

- */

-void DOSMesaDestroyContext( DOSMesaContext ctx )

-{

-   if (ctx) {

-      _mesa_destroy_visual( ctx->gl_vis );

-      _mesa_destroy_context( ctx->gl_ctx );

-      _mesa_destroy_framebuffer( ctx->gl_buffer );

-      free( ctx );

-      if (ctx==DOSMesa) {

-         DOSMesa = NULL;

-      }

-   }

-}

-

-

-

-/*

- * Make the specified VGA/Mesa context the current one.

- */

-void DOSMesaMakeCurrent( DOSMesaContext ctx )

-{

-   DOSMesa = ctx;

-   _mesa_make_current( ctx->gl_ctx, ctx->gl_buffer );

-   DOSmesa_setup_DD_pointers( ctx->gl_ctx );

-

-   if (ctx->width==0 || ctx->height==0) {

-      /* setup initial viewport */

-      ctx->width = vga_getxdim();

-      ctx->height = vga_getydim();

-      _mesa_set_viewport( ctx->gl_ctx, 0, 0, ctx->width, ctx->height );

-   }

-}

-

-

-

-/*

- * Return a handle to the current VGA/Mesa context.

- */

-DOSMesaContext DOSMesaGetCurrentContext( void )

-{

-   return DOSMesa;

-}

-

-

-/*

- * Swap front/back buffers for current context if double buffered.

- */

-void DOSMesaSwapBuffers( void )

-{

-#if !defined(UNIVBE)

-/* Assume double buffering is available if in UNIVBE,

-   if it isn`t its taken care of anyway */

-//   if (DOSMesa->gl_vis->DBflag)

-#endif

- 	{

-      vga_flip();

-   }

-}

-

-

-#else

-

-/*

- * Need this to provide at least one external definition when DOS is

- * not defined on the compiler command line.

- */

-

-int gl_DOS_dummy_function(void)

-{

-   return 0;

-}

-

-#endif  /*DOS*/

-