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Diffstat (limited to 'src/mesa/drivers/dri/savage/savagespan.c')
-rw-r--r--src/mesa/drivers/dri/savage/savagespan.c282
1 files changed, 282 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/savage/savagespan.c b/src/mesa/drivers/dri/savage/savagespan.c
new file mode 100644
index 0000000000..0913dd1278
--- /dev/null
+++ b/src/mesa/drivers/dri/savage/savagespan.c
@@ -0,0 +1,282 @@
+/*
+ * Copyright 1998-2003 VIA Technologies, Inc. All Rights Reserved.
+ * Copyright 2001-2003 S3 Graphics, Inc. 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, sub license,
+ * 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 (including the
+ * next paragraph) 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 NON-INFRINGEMENT. IN NO EVENT SHALL
+ * VIA, S3 GRAPHICS, AND/OR ITS SUPPLIERS 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.
+ */
+
+#include "main/mtypes.h"
+#include "savagedd.h"
+#include "savagespan.h"
+#include "savageioctl.h"
+#include "savage_3d_reg.h"
+#include "swrast/swrast.h"
+
+#define DBG 0
+
+#define LOCAL_VARS \
+ driRenderbuffer *drb = (driRenderbuffer *) rb; \
+ __DRIdrawable *const dPriv = drb->dPriv; \
+ GLuint cpp = drb->cpp; \
+ GLuint pitch = drb->pitch; \
+ GLuint height = dPriv->h; \
+ GLubyte *buf = drb->Base.Data + dPriv->x * cpp + dPriv->y * pitch; \
+ GLuint p; \
+ (void) p
+
+#define LOCAL_DEPTH_VARS \
+ driRenderbuffer *drb = (driRenderbuffer *) rb; \
+ __DRIdrawable *const dPriv = drb->dPriv; \
+ GLuint zpp = drb->cpp; \
+ GLuint pitch = drb->pitch; \
+ GLuint height = dPriv->h; \
+ GLubyte *buf = drb->Base.Data + dPriv->x * zpp + dPriv->y * pitch;
+
+#define LOCAL_STENCIL_VARS LOCAL_DEPTH_VARS
+
+#define Y_FLIP(_y) (height - _y - 1)
+
+#define HW_LOCK()
+
+#define HW_UNLOCK()
+
+#define HW_WRITE_LOCK()
+
+#define HW_READ_LOCK()
+
+
+/* 16 bit, 565 rgb color spanline and pixel functions
+ */
+#define SPANTMP_PIXEL_FMT GL_RGB
+#define SPANTMP_PIXEL_TYPE GL_UNSIGNED_SHORT_5_6_5
+
+#define TAG(x) savage##x##_565
+#define TAG2(x,y) savage##x##_565##y
+#include "spantmp2.h"
+
+
+/* 32 bit, 8888 ARGB color spanline and pixel functions
+ */
+#define SPANTMP_PIXEL_FMT GL_BGRA
+#define SPANTMP_PIXEL_TYPE GL_UNSIGNED_INT_8_8_8_8_REV
+
+#define TAG(x) savage##x##_8888
+#define TAG2(x,y) savage##x##_8888##y
+#include "spantmp2.h"
+
+
+#undef HW_WRITE_LOCK
+#define HW_WRITE_LOCK()
+#undef HW_READ_LOCK
+#define HW_READ_LOCK()
+
+
+
+/* 16 bit integer depthbuffer functions
+ * Depth range is reversed. See also savageCalcViewport.
+ */
+#define VALUE_TYPE GLushort
+
+#define WRITE_DEPTH( _x, _y, d ) \
+ *(GLushort *)(buf + ((_x)<<1) + (_y)*pitch) = 0xFFFF - d
+
+#define READ_DEPTH( d, _x, _y ) \
+ d = 0xFFFF - *(GLushort *)(buf + ((_x)<<1) + (_y)*pitch)
+
+#define TAG(x) savage##x##_z16
+#include "depthtmp.h"
+
+
+
+
+/* 16 bit float depthbuffer functions
+ */
+#define VALUE_TYPE GLushort
+
+#define WRITE_DEPTH( _x, _y, d ) \
+ *(GLushort *)(buf + ((_x)<<1) + (_y)*pitch) = \
+ savageEncodeFloat16( 1.0 - (GLfloat)d/65535.0 )
+
+#define READ_DEPTH( d, _x, _y ) \
+ d = 65535 - \
+ savageDecodeFloat16( *(GLushort *)(buf + ((_x)<<1) + (_y)*pitch) ) * \
+ 65535.0
+
+#define TAG(x) savage##x##_z16f
+#include "depthtmp.h"
+
+
+
+
+/* 8-bit stencil /24-bit integer depth depthbuffer functions.
+ * Depth range is reversed. See also savageCalcViewport.
+ */
+#define VALUE_TYPE GLuint
+
+#define WRITE_DEPTH( _x, _y, d ) do { \
+ GLuint tmp = *(GLuint *)(buf + ((_x)<<2) + (_y)*pitch); \
+ tmp &= 0xFF000000; \
+ tmp |= 0x00FFFFFF - d; \
+ *(GLuint *)(buf + (_x<<2) + _y*pitch) = tmp; \
+} while(0)
+
+#define READ_DEPTH( d, _x, _y ) \
+ d = 0x00FFFFFF - (*(GLuint *)(buf + ((_x)<<2) + (_y)*pitch) & 0x00FFFFFF)
+
+#define TAG(x) savage##x##_s8_z24
+#include "depthtmp.h"
+
+
+
+
+/* 24 bit float depthbuffer functions
+ */
+#define VALUE_TYPE GLuint
+
+#define WRITE_DEPTH( _x, _y, d ) do { \
+ GLuint tmp = *(GLuint *)(buf + ((_x)<<2) + (_y)*pitch); \
+ tmp &= 0xFF000000; \
+ tmp |= savageEncodeFloat24( 1.0 - (GLfloat)d/16777215.0 ); \
+ *(GLuint *)(buf + (_x<<2) + _y*pitch) = tmp; \
+} while(0)
+
+#define READ_DEPTH( d, _x, _y ) \
+ d = 16777215 - savageDecodeFloat24( \
+ *(GLuint *)(buf + ((_x)<<2) + (_y)*pitch) & 0x00FFFFFF) \
+ * 16777215.0
+
+#define TAG(x) savage##x##_s8_z24f
+#include "depthtmp.h"
+
+
+#define WRITE_STENCIL( _x, _y, d ) do { \
+ GLuint tmp = *(GLuint *)(buf + ((_x)<<2) + (_y)*pitch); \
+ tmp &= 0x00FFFFFF; \
+ tmp |= (((GLuint)d)<<24) & 0xFF000000; \
+ *(GLuint *)(buf + ((_x)<<2) + (_y)*pitch) = tmp; \
+} while(0)
+
+#define READ_STENCIL( d, _x, _y ) \
+ d = (GLstencil)((*(GLuint *)(buf + ((_x)<<2) + (_y)*pitch) & 0xFF000000) >> 24)
+
+#define TAG(x) savage##x##_s8_z24
+#include "stenciltmp.h"
+
+
+
+/*
+ * Wrappers around _swrast_Copy/Draw/ReadPixels that make sure all
+ * primitives are flushed and the hardware is idle before accessing
+ * the frame buffer.
+ */
+static void
+savageCopyPixels( GLcontext *ctx,
+ GLint srcx, GLint srcy, GLsizei width, GLsizei height,
+ GLint destx, GLint desty,
+ GLenum type )
+{
+ savageContextPtr imesa = SAVAGE_CONTEXT(ctx);
+ FLUSH_BATCH(imesa);
+ WAIT_IDLE_EMPTY(imesa);
+ _swrast_CopyPixels(ctx, srcx, srcy, width, height, destx, desty, type);
+}
+static void
+savageDrawPixels( GLcontext *ctx,
+ GLint x, GLint y,
+ GLsizei width, GLsizei height,
+ GLenum format, GLenum type,
+ const struct gl_pixelstore_attrib *packing,
+ const GLvoid *pixels )
+{
+ savageContextPtr imesa = SAVAGE_CONTEXT(ctx);
+ FLUSH_BATCH(imesa);
+ WAIT_IDLE_EMPTY(imesa);
+ _swrast_DrawPixels(ctx, x, y, width, height, format, type, packing, pixels);
+}
+static void
+savageReadPixels( GLcontext *ctx,
+ GLint x, GLint y, GLsizei width, GLsizei height,
+ GLenum format, GLenum type,
+ const struct gl_pixelstore_attrib *packing,
+ GLvoid *pixels )
+{
+ savageContextPtr imesa = SAVAGE_CONTEXT(ctx);
+ FLUSH_BATCH(imesa);
+ WAIT_IDLE_EMPTY(imesa);
+ _swrast_ReadPixels(ctx, x, y, width, height, format, type, packing, pixels);
+}
+
+/*
+ * Make sure the hardware is idle when span-rendering.
+ */
+static void savageSpanRenderStart( GLcontext *ctx )
+{
+ savageContextPtr imesa = SAVAGE_CONTEXT(ctx);
+ FLUSH_BATCH(imesa);
+ WAIT_IDLE_EMPTY(imesa);
+}
+
+
+void savageDDInitSpanFuncs( GLcontext *ctx )
+{
+ struct swrast_device_driver *swdd = _swrast_GetDeviceDriverReference(ctx);
+ swdd->SpanRenderStart = savageSpanRenderStart;
+
+ /* XXX these should probably be plugged in elsewhere */
+ ctx->Driver.CopyPixels = savageCopyPixels;
+ ctx->Driver.DrawPixels = savageDrawPixels;
+ ctx->Driver.ReadPixels = savageReadPixels;
+}
+
+
+
+/**
+ * Plug in the Get/Put routines for the given driRenderbuffer.
+ */
+void
+savageSetSpanFunctions(driRenderbuffer *drb, const GLvisual *vis,
+ GLboolean float_depth)
+{
+ if (drb->Base.Format == MESA_FORMAT_RGB565) {
+ savageInitPointers_565(&drb->Base);
+ }
+ else if (drb->Base.Format == MESA_FORMAT_ARGB8888) {
+ savageInitPointers_8888(&drb->Base);
+ }
+ else if (drb->Base.Format == MESA_FORMAT_Z16) {
+ if (float_depth) {
+ savageInitDepthPointers_z16f(&drb->Base);
+ }
+ else {
+ savageInitDepthPointers_z16(&drb->Base);
+ }
+ }
+ else if (drb->Base.Format == MESA_FORMAT_S8_Z24) {
+ if (float_depth) {
+ savageInitDepthPointers_s8_z24f(&drb->Base);
+ }
+ else {
+ savageInitDepthPointers_s8_z24(&drb->Base);
+ }
+ }
+ else if (drb->Base.Format == MESA_FORMAT_S8) {
+ savageInitStencilPointers_s8_z24(&drb->Base);
+ }
+}
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