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Diffstat (limited to 'src/mesa/drivers/dri/tdfx/tdfx_pixels.c')
-rw-r--r--src/mesa/drivers/dri/tdfx/tdfx_pixels.c689
1 files changed, 689 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/tdfx/tdfx_pixels.c b/src/mesa/drivers/dri/tdfx/tdfx_pixels.c
new file mode 100644
index 00000000000..803c8c5c1cc
--- /dev/null
+++ b/src/mesa/drivers/dri/tdfx/tdfx_pixels.c
@@ -0,0 +1,689 @@
+/* -*- mode: c; c-basic-offset: 3 -*-
+ *
+ * Copyright 2000 VA Linux Systems Inc., Fremont, California.
+ *
+ * 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 (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 NONINFRINGEMENT. IN NO EVENT SHALL
+ * VA LINUX SYSTEMS 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.
+ */
+/* $XFree86: xc/lib/GL/mesa/src/drv/tdfx/tdfx_pixels.c,v 1.4 2002/02/22 21:45:03 dawes Exp $ */
+
+/*
+ * Original rewrite:
+ * Gareth Hughes <[email protected]>, 29 Sep - 1 Oct 2000
+ *
+ * Authors:
+ * Gareth Hughes <[email protected]>
+ * Brian Paul <[email protected]>
+ * Nathan Hand <[email protected]>
+ *
+ */
+
+#include "tdfx_context.h"
+#include "tdfx_dd.h"
+#include "tdfx_lock.h"
+#include "tdfx_vb.h"
+#include "tdfx_pixels.h"
+#include "tdfx_render.h"
+
+#include "swrast/swrast.h"
+
+#include "image.h"
+
+
+#define FX_grLfbWriteRegion(fxMesa,dst_buffer,dst_x,dst_y,src_format,src_width,src_height,src_stride,src_data) \
+ do { \
+ LOCK_HARDWARE(fxMesa); \
+ fxMesa->Glide.grLfbWriteRegion(dst_buffer,dst_x,dst_y,src_format,src_width,src_height,FXFALSE,src_stride,src_data); \
+ UNLOCK_HARDWARE(fxMesa); \
+ } while(0)
+
+
+#define FX_grLfbReadRegion(fxMesa,src_buffer,src_x,src_y,src_width,src_height,dst_stride,dst_data) \
+ do { \
+ LOCK_HARDWARE(fxMesa); \
+ fxMesa->Glide.grLfbReadRegion(src_buffer,src_x,src_y,src_width,src_height,dst_stride,dst_data); \
+ UNLOCK_HARDWARE(fxMesa); \
+ } while (0);
+
+
+#if 0
+static FxBool
+FX_grLfbLock(tdfxContextPtr fxMesa, GrLock_t type, GrBuffer_t buffer,
+ GrLfbWriteMode_t writeMode, GrOriginLocation_t origin,
+ FxBool pixelPipeline, GrLfbInfo_t * info)
+{
+ FxBool result;
+
+ LOCK_HARDWARE(fxMesa);
+ result = fxMesa->Glide.grLfbLock(type, buffer, writeMode, origin, pixelPipeline, info);
+ UNLOCK_HARDWARE(fxMesa);
+ return result;
+}
+#endif
+
+
+#define FX_grLfbUnlock(fxMesa, t, b) \
+ do { \
+ LOCK_HARDWARE(fxMesa); \
+ fxMesa->Glide.grLfbUnlock(t, b); \
+ UNLOCK_HARDWARE(fxMesa); \
+ } while (0)
+
+
+
+#if 0
+/* test if window coord (px,py) is visible */
+static GLboolean
+inClipRects(tdfxContextPtr fxMesa, int px, int py)
+{
+ int i;
+ for (i = 0; i < fxMesa->numClipRects; i++) {
+ if ((px >= fxMesa->pClipRects[i].x1) &&
+ (px < fxMesa->pClipRects[i].x2) &&
+ (py >= fxMesa->pClipRects[i].y1) &&
+ (py < fxMesa->pClipRects[i].y2)) return GL_TRUE;
+ }
+ return GL_FALSE;
+}
+#endif
+
+/* test if rectangle of pixels (px,py) (px+width,py+height) is visible */
+static GLboolean
+inClipRects_Region(tdfxContextPtr fxMesa, int x, int y, int width, int height)
+{
+ int i;
+ int x1, y1, x2, y2;
+ int xmin, xmax, ymin, ymax, pixelsleft;
+
+ y1 = y - height + 1; y2 = y;
+ x1 = x; x2 = x + width - 1;
+ pixelsleft = width * height;
+
+ for (i = 0; i < fxMesa->numClipRects; i++)
+ {
+ /* algorithm requires x1 < x2 and y1 < y2 */
+ if ((fxMesa->pClipRects[i].x1 < fxMesa->pClipRects[i].x2)) {
+ xmin = fxMesa->pClipRects[i].x1;
+ xmax = fxMesa->pClipRects[i].x2-1;
+ } else {
+ xmin = fxMesa->pClipRects[i].x2;
+ xmax = fxMesa->pClipRects[i].x1-1;
+ }
+ if ((fxMesa->pClipRects[i].y1 < fxMesa->pClipRects[i].y2)) {
+ ymin = fxMesa->pClipRects[i].y1;
+ ymax = fxMesa->pClipRects[i].y2-1;
+ } else {
+ ymin = fxMesa->pClipRects[i].y2;
+ ymax = fxMesa->pClipRects[i].y1-1;
+ }
+
+ /* reject trivial cases */
+ if (xmax < x1) continue;
+ if (ymax < y1) continue;
+ if (xmin > x2) continue;
+ if (ymin > y2) continue;
+
+ /* find the intersection */
+ if (xmin < x1) xmin = x1;
+ if (ymin < y1) ymin = y1;
+ if (xmax > x2) xmax = x2;
+ if (ymax > y2) ymax = y2;
+
+ pixelsleft -= (xmax-xmin+1) * (ymax-ymin+1);
+ }
+
+ return pixelsleft == 0;
+}
+
+#if 0
+GLboolean
+tdfx_bitmap_R5G6B5(GLcontext * ctx, GLint px, GLint py,
+ GLsizei width, GLsizei height,
+ const struct gl_pixelstore_attrib *unpack,
+ const GLubyte * bitmap)
+{
+ tdfxContextPtr fxMesa = TDFX_CONTEXT(ctx);
+ GrLfbInfo_t info;
+ TdfxU16 color;
+ const struct gl_pixelstore_attrib *finalUnpack;
+ struct gl_pixelstore_attrib scissoredUnpack;
+
+ /* check if there's any raster operations enabled which we can't handle */
+ if (ctx->RasterMask & (ALPHATEST_BIT |
+ BLEND_BIT |
+ DEPTH_BIT |
+ FOG_BIT |
+ LOGIC_OP_BIT |
+ SCISSOR_BIT |
+ STENCIL_BIT |
+ MASKING_BIT |
+ ALPHABUF_BIT | MULTI_DRAW_BIT)) return GL_FALSE;
+
+ if (ctx->Scissor.Enabled) {
+ /* This is a bit tricky, but by carefully adjusting the px, py,
+ * width, height, skipPixels and skipRows values we can do
+ * scissoring without special code in the rendering loop.
+ */
+
+ /* we'll construct a new pixelstore struct */
+ finalUnpack = &scissoredUnpack;
+ scissoredUnpack = *unpack;
+ if (scissoredUnpack.RowLength == 0)
+ scissoredUnpack.RowLength = width;
+
+ /* clip left */
+ if (px < ctx->Scissor.X) {
+ scissoredUnpack.SkipPixels += (ctx->Scissor.X - px);
+ width -= (ctx->Scissor.X - px);
+ px = ctx->Scissor.X;
+ }
+ /* clip right */
+ if (px + width >= ctx->Scissor.X + ctx->Scissor.Width) {
+ width -= (px + width - (ctx->Scissor.X + ctx->Scissor.Width));
+ }
+ /* clip bottom */
+ if (py < ctx->Scissor.Y) {
+ scissoredUnpack.SkipRows += (ctx->Scissor.Y - py);
+ height -= (ctx->Scissor.Y - py);
+ py = ctx->Scissor.Y;
+ }
+ /* clip top */
+ if (py + height >= ctx->Scissor.Y + ctx->Scissor.Height) {
+ height -= (py + height - (ctx->Scissor.Y + ctx->Scissor.Height));
+ }
+
+ if (width <= 0 || height <= 0)
+ return GL_TRUE; /* totally scissored away */
+ }
+ else {
+ finalUnpack = unpack;
+ }
+
+ /* compute pixel value */
+ {
+ GLint r = (GLint) (ctx->Current.RasterColor[0] * 255.0f);
+ GLint g = (GLint) (ctx->Current.RasterColor[1] * 255.0f);
+ GLint b = (GLint) (ctx->Current.RasterColor[2] * 255.0f);
+ /*GLint a = (GLint)(ctx->Current.RasterColor[3]*255.0f); */
+ if (fxMesa->bgrOrder) {
+ color = (TdfxU16)
+ (((TdfxU16) 0xf8 & b) << (11 - 3)) |
+ (((TdfxU16) 0xfc & g) << (5 - 3 + 1)) |
+ (((TdfxU16) 0xf8 & r) >> 3);
+ }
+ else
+ color = (TdfxU16)
+ (((TdfxU16) 0xf8 & r) << (11 - 3)) |
+ (((TdfxU16) 0xfc & g) << (5 - 3 + 1)) |
+ (((TdfxU16) 0xf8 & b) >> 3);
+ }
+
+ info.size = sizeof(info);
+ if (!TDFX_grLfbLock(fxMesa,
+ GR_LFB_WRITE_ONLY,
+ fxMesa->currentFB,
+ GR_LFBWRITEMODE_565,
+ GR_ORIGIN_UPPER_LEFT, FXFALSE, &info)) {
+#ifndef TDFX_SILENT
+ fprintf(stderr, "tdfx Driver: error locking the linear frame buffer\n");
+#endif
+ return GL_TRUE;
+ }
+
+ {
+ const GLint winX = fxMesa->x_offset;
+ const GLint winY = fxMesa->y_offset + fxMesa->height - 1;
+ /* The dest stride depends on the hardware and whether we're drawing
+ * to the front or back buffer. This compile-time test seems to do
+ * the job for now.
+ */
+ const GLint dstStride = (fxMesa->glCtx->Color.DrawBuffer == GL_FRONT)
+ ? (fxMesa->screen_width) : (info.strideInBytes / 2);
+ GLint row;
+ /* compute dest address of bottom-left pixel in bitmap */
+ GLushort *dst = (GLushort *) info.lfbPtr
+ + (winY - py) * dstStride + (winX + px);
+
+ for (row = 0; row < height; row++) {
+ const GLubyte *src =
+ (const GLubyte *) _mesa_image_address(finalUnpack,
+ bitmap, width, height,
+ GL_COLOR_INDEX,
+ GL_BITMAP, 0, row, 0);
+ if (finalUnpack->LsbFirst) {
+ /* least significan bit first */
+ GLubyte mask = 1U << (finalUnpack->SkipPixels & 0x7);
+ GLint col;
+ for (col = 0; col < width; col++) {
+ if (*src & mask) {
+ if (inClipRects(fxMesa, winX + px + col, winY - py - row))
+ dst[col] = color;
+ }
+ if (mask == 128U) {
+ src++;
+ mask = 1U;
+ }
+ else {
+ mask = mask << 1;
+ }
+ }
+ if (mask != 1)
+ src++;
+ }
+ else {
+ /* most significan bit first */
+ GLubyte mask = 128U >> (finalUnpack->SkipPixels & 0x7);
+ GLint col;
+ for (col = 0; col < width; col++) {
+ if (*src & mask) {
+ if (inClipRects(fxMesa, winX + px + col, winY - py - row))
+ dst[col] = color;
+ }
+ if (mask == 1U) {
+ src++;
+ mask = 128U;
+ }
+ else {
+ mask = mask >> 1;
+ }
+ }
+ if (mask != 128)
+ src++;
+ }
+ dst -= dstStride;
+ }
+ }
+
+ TDFX_grLfbUnlock(fxMesa, GR_LFB_WRITE_ONLY, fxMesa->currentFB);
+ return GL_TRUE;
+}
+#endif
+
+#if 0
+GLboolean
+tdfx_bitmap_R8G8B8A8(GLcontext * ctx, GLint px, GLint py,
+ GLsizei width, GLsizei height,
+ const struct gl_pixelstore_attrib *unpack,
+ const GLubyte * bitmap)
+{
+ tdfxContextPtr fxMesa = TDFX_CONTEXT(ctx);
+ GrLfbInfo_t info;
+ GLuint color;
+ const struct gl_pixelstore_attrib *finalUnpack;
+ struct gl_pixelstore_attrib scissoredUnpack;
+
+ /* check if there's any raster operations enabled which we can't handle */
+ if (ctx->RasterMask & (ALPHATEST_BIT |
+ BLEND_BIT |
+ DEPTH_BIT |
+ FOG_BIT |
+ LOGIC_OP_BIT |
+ SCISSOR_BIT |
+ STENCIL_BIT |
+ MASKING_BIT |
+ ALPHABUF_BIT | MULTI_DRAW_BIT)) return GL_FALSE;
+
+ if (ctx->Scissor.Enabled) {
+ /* This is a bit tricky, but by carefully adjusting the px, py,
+ * width, height, skipPixels and skipRows values we can do
+ * scissoring without special code in the rendering loop.
+ */
+
+ /* we'll construct a new pixelstore struct */
+ finalUnpack = &scissoredUnpack;
+ scissoredUnpack = *unpack;
+ if (scissoredUnpack.RowLength == 0)
+ scissoredUnpack.RowLength = width;
+
+ /* clip left */
+ if (px < ctx->Scissor.X) {
+ scissoredUnpack.SkipPixels += (ctx->Scissor.X - px);
+ width -= (ctx->Scissor.X - px);
+ px = ctx->Scissor.X;
+ }
+ /* clip right */
+ if (px + width >= ctx->Scissor.X + ctx->Scissor.Width) {
+ width -= (px + width - (ctx->Scissor.X + ctx->Scissor.Width));
+ }
+ /* clip bottom */
+ if (py < ctx->Scissor.Y) {
+ scissoredUnpack.SkipRows += (ctx->Scissor.Y - py);
+ height -= (ctx->Scissor.Y - py);
+ py = ctx->Scissor.Y;
+ }
+ /* clip top */
+ if (py + height >= ctx->Scissor.Y + ctx->Scissor.Height) {
+ height -= (py + height - (ctx->Scissor.Y + ctx->Scissor.Height));
+ }
+
+ if (width <= 0 || height <= 0)
+ return GL_TRUE; /* totally scissored away */
+ }
+ else {
+ finalUnpack = unpack;
+ }
+
+ /* compute pixel value */
+ {
+ GLint r = (GLint) (ctx->Current.RasterColor[0] * 255.0f);
+ GLint g = (GLint) (ctx->Current.RasterColor[1] * 255.0f);
+ GLint b = (GLint) (ctx->Current.RasterColor[2] * 255.0f);
+ GLint a = (GLint) (ctx->Current.RasterColor[3] * 255.0f);
+ color = PACK_BGRA32(r, g, b, a);
+ }
+
+ info.size = sizeof(info);
+ if (!TDFX_grLfbLock(fxMesa, GR_LFB_WRITE_ONLY,
+ fxMesa->currentFB, GR_LFBWRITEMODE_8888,
+ GR_ORIGIN_UPPER_LEFT, FXFALSE, &info)) {
+#ifndef TDFX_SILENT
+ fprintf(stderr, "tdfx Driver: error locking the linear frame buffer\n");
+#endif
+ return GL_TRUE;
+ }
+
+ {
+ const GLint winX = fxMesa->x_offset;
+ const GLint winY = fxMesa->y_offset + fxMesa->height - 1;
+ GLint dstStride;
+ GLuint *dst;
+ GLint row;
+
+ if (fxMesa->glCtx->Color.DrawBuffer == GL_FRONT) {
+ dstStride = fxMesa->screen_width;
+ dst =
+ (GLuint *) info.lfbPtr + (winY - py) * dstStride + (winX +
+ px);
+ }
+ else {
+ dstStride = info.strideInBytes / 4;
+ dst =
+ (GLuint *) info.lfbPtr + (winY - py) * dstStride + (winX +
+ px);
+ }
+
+ /* compute dest address of bottom-left pixel in bitmap */
+ for (row = 0; row < height; row++) {
+ const GLubyte *src =
+ (const GLubyte *) _mesa_image_address(finalUnpack,
+ bitmap, width, height,
+ GL_COLOR_INDEX,
+ GL_BITMAP, 0, row, 0);
+ if (finalUnpack->LsbFirst) {
+ /* least significan bit first */
+ GLubyte mask = 1U << (finalUnpack->SkipPixels & 0x7);
+ GLint col;
+ for (col = 0; col < width; col++) {
+ if (*src & mask) {
+ if (inClipRects(fxMesa, winX + px + col, winY - py - row))
+ dst[col] = color;
+ }
+ if (mask == 128U) {
+ src++;
+ mask = 1U;
+ }
+ else {
+ mask = mask << 1;
+ }
+ }
+ if (mask != 1)
+ src++;
+ }
+ else {
+ /* most significan bit first */
+ GLubyte mask = 128U >> (finalUnpack->SkipPixels & 0x7);
+ GLint col;
+ for (col = 0; col < width; col++) {
+ if (*src & mask) {
+ if (inClipRects(fxMesa, winX + px + col, winY - py - row))
+ dst[col] = color;
+ }
+ if (mask == 1U) {
+ src++;
+ mask = 128U;
+ }
+ else {
+ mask = mask >> 1;
+ }
+ }
+ if (mask != 128)
+ src++;
+ }
+ dst -= dstStride;
+ }
+ }
+
+ TDFX_grLfbUnlock(fxMesa, GR_LFB_WRITE_ONLY, fxMesa->currentFB);
+ return GL_TRUE;
+}
+#endif
+
+void
+tdfx_readpixels_R5G6B5(GLcontext * ctx, GLint x, GLint y,
+ GLsizei width, GLsizei height,
+ GLenum format, GLenum type,
+ const struct gl_pixelstore_attrib *packing,
+ GLvoid * dstImage)
+{
+ if (format != GL_RGB ||
+ type != GL_UNSIGNED_SHORT_5_6_5 ||
+ (ctx->_ImageTransferState & (IMAGE_SCALE_BIAS_BIT|
+ IMAGE_MAP_COLOR_BIT)))
+ {
+ _swrast_ReadPixels( ctx, x, y, width, height, format, type, packing,
+ dstImage );
+ return;
+ }
+
+ {
+ tdfxContextPtr fxMesa = TDFX_CONTEXT(ctx);
+ GrLfbInfo_t info;
+
+ const GLint winX = fxMesa->x_offset;
+ const GLint winY = fxMesa->y_offset + fxMesa->height - 1;
+ const GLint scrX = winX + x;
+ const GLint scrY = winY - y;
+
+ LOCK_HARDWARE( fxMesa );
+ info.size = sizeof(info);
+ if (fxMesa->Glide.grLfbLock(GR_LFB_READ_ONLY,
+ fxMesa->ReadBuffer,
+ GR_LFBWRITEMODE_ANY,
+ GR_ORIGIN_UPPER_LEFT, FXFALSE, &info)) {
+ const GLint srcStride = (fxMesa->glCtx->Color.DrawBuffer ==
+ GL_FRONT) ? (fxMesa->screen_width) : (info.strideInBytes / 2);
+ const GLushort *src = (const GLushort *) info.lfbPtr
+ + scrY * srcStride + scrX;
+ GLubyte *dst = (GLubyte *) _mesa_image_address(packing,
+ dstImage, width, height, format, type, 0, 0, 0);
+ const GLint dstStride = _mesa_image_row_stride(packing,
+ width, format, type);
+
+ /* directly memcpy 5R6G5B pixels into client's buffer */
+ const GLint widthInBytes = width * 2;
+ GLint row;
+ for (row = 0; row < height; row++) {
+ MEMCPY(dst, src, widthInBytes);
+ dst += dstStride;
+ src -= srcStride;
+ }
+
+ fxMesa->Glide.grLfbUnlock(GR_LFB_READ_ONLY, fxMesa->ReadBuffer);
+ }
+ UNLOCK_HARDWARE( fxMesa );
+ return;
+ }
+}
+
+void
+tdfx_readpixels_R8G8B8A8(GLcontext * ctx, GLint x, GLint y,
+ GLsizei width, GLsizei height,
+ GLenum format, GLenum type,
+ const struct gl_pixelstore_attrib *packing,
+ GLvoid * dstImage)
+{
+ if ((!(format == GL_BGRA && type == GL_UNSIGNED_INT_8_8_8_8) &&
+ !(format == GL_BGRA && type == GL_UNSIGNED_BYTE)) ||
+ (ctx->_ImageTransferState & (IMAGE_SCALE_BIAS_BIT|
+ IMAGE_MAP_COLOR_BIT)))
+ {
+ _swrast_ReadPixels( ctx, x, y, width, height, format, type, packing,
+ dstImage );
+ return;
+ }
+
+
+ {
+ tdfxContextPtr fxMesa = TDFX_CONTEXT(ctx);
+ GrLfbInfo_t info;
+
+ const GLint winX = fxMesa->x_offset;
+ const GLint winY = fxMesa->y_offset + fxMesa->height - 1;
+ const GLint scrX = winX + x;
+ const GLint scrY = winY - y;
+
+ LOCK_HARDWARE(fxMesa);
+ info.size = sizeof(info);
+ if (fxMesa->Glide.grLfbLock(GR_LFB_READ_ONLY,
+ fxMesa->ReadBuffer,
+ GR_LFBWRITEMODE_ANY,
+ GR_ORIGIN_UPPER_LEFT, FXFALSE, &info))
+ {
+ const GLint srcStride = (fxMesa->glCtx->Color.DrawBuffer == GL_FRONT)
+ ? (fxMesa->screen_width) : (info.strideInBytes / 4);
+ const GLuint *src = (const GLuint *) info.lfbPtr
+ + scrY * srcStride + scrX;
+ const GLint dstStride =
+ _mesa_image_row_stride(packing, width, format, type);
+ GLubyte *dst = (GLubyte *) _mesa_image_address(packing,
+ dstImage, width, height, format, type, 0, 0, 0);
+ const GLint widthInBytes = width * 4;
+
+ {
+ GLint row;
+ for (row = 0; row < height; row++) {
+ MEMCPY(dst, src, widthInBytes);
+ dst += dstStride;
+ src -= srcStride;
+ }
+ }
+
+ fxMesa->Glide.grLfbUnlock(GR_LFB_READ_ONLY, fxMesa->ReadBuffer);
+ }
+ UNLOCK_HARDWARE(fxMesa);
+ }
+}
+
+void
+tdfx_drawpixels_R8G8B8A8(GLcontext * ctx, GLint x, GLint y,
+ GLsizei width, GLsizei height,
+ GLenum format, GLenum type,
+ const struct gl_pixelstore_attrib *unpack,
+ const GLvoid * pixels)
+{
+ tdfxContextPtr fxMesa = TDFX_CONTEXT(ctx);
+
+ if ((!(format == GL_BGRA && type == GL_UNSIGNED_INT_8_8_8_8) &&
+ !(format == GL_BGRA && type == GL_UNSIGNED_BYTE)) ||
+ ctx->Pixel.ZoomX != 1.0F ||
+ ctx->Pixel.ZoomY != 1.0F ||
+ (ctx->_ImageTransferState & (IMAGE_SCALE_BIAS_BIT|
+ IMAGE_MAP_COLOR_BIT)) ||
+ ctx->Color.AlphaEnabled ||
+ ctx->Depth.Test ||
+ ctx->Fog.Enabled ||
+ ctx->Scissor.Enabled ||
+ ctx->Stencil.Enabled ||
+ !ctx->Color.ColorMask[0] ||
+ !ctx->Color.ColorMask[1] ||
+ !ctx->Color.ColorMask[2] ||
+ !ctx->Color.ColorMask[3] ||
+ ctx->Color.ColorLogicOpEnabled ||
+ ctx->Texture._EnabledUnits ||
+ ctx->Depth.OcclusionTest ||
+ fxMesa->Fallback)
+ {
+ _swrast_DrawPixels( ctx, x, y, width, height, format, type,
+ unpack, pixels );
+ return;
+ }
+
+ {
+ tdfxContextPtr fxMesa = TDFX_CONTEXT(ctx);
+ GrLfbInfo_t info;
+ GLboolean result = GL_FALSE;
+
+ const GLint winX = fxMesa->x_offset;
+ const GLint winY = fxMesa->y_offset + fxMesa->height - 1;
+ const GLint scrX = winX + x;
+ const GLint scrY = winY - y;
+
+ /* lock early to make sure cliprects are right */
+ LOCK_HARDWARE(fxMesa);
+
+ /* make sure hardware has latest blend funcs */
+ if (ctx->Color.BlendEnabled) {
+ fxMesa->dirty |= TDFX_UPLOAD_BLEND_FUNC;
+ tdfxEmitHwStateLocked( fxMesa );
+ }
+
+ /* look for clipmasks, giveup if region obscured */
+ if (fxMesa->glCtx->Color.DrawBuffer == GL_FRONT) {
+ if (!inClipRects_Region(fxMesa, scrX, scrY, width, height)) {
+ UNLOCK_HARDWARE(fxMesa);
+ _swrast_DrawPixels( ctx, x, y, width, height, format, type,
+ unpack, pixels );
+ return;
+ }
+ }
+
+ info.size = sizeof(info);
+ if (fxMesa->Glide.grLfbLock(GR_LFB_WRITE_ONLY,
+ fxMesa->DrawBuffer,
+ GR_LFBWRITEMODE_8888,
+ GR_ORIGIN_UPPER_LEFT, FXTRUE, &info))
+ {
+ const GLint dstStride = (fxMesa->glCtx->Color.DrawBuffer == GL_FRONT)
+ ? (fxMesa->screen_width * 4) : (info.strideInBytes);
+ GLubyte *dst = (GLubyte *) info.lfbPtr
+ + scrY * dstStride + scrX * 4;
+ const GLint srcStride =
+ _mesa_image_row_stride(unpack, width, format, type);
+ const GLubyte *src = (GLubyte *) _mesa_image_address(unpack,
+ pixels, width, height, format, type, 0, 0, 0);
+ const GLint widthInBytes = width * 4;
+
+ if ((format == GL_BGRA && type == GL_UNSIGNED_INT_8_8_8_8) ||
+ (format == GL_BGRA && type == GL_UNSIGNED_BYTE)) {
+ GLint row;
+ for (row = 0; row < height; row++) {
+ MEMCPY(dst, src, widthInBytes);
+ dst -= dstStride;
+ src += srcStride;
+ }
+ result = GL_TRUE;
+ }
+
+ fxMesa->Glide.grLfbUnlock(GR_LFB_WRITE_ONLY, fxMesa->DrawBuffer);
+ }
+ UNLOCK_HARDWARE(fxMesa);
+ }
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-01 23:26:36 +0000