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Diffstat (limited to 'src/mesa/drivers/glide/fxddspan.c')
-rw-r--r--src/mesa/drivers/glide/fxddspan.c257
1 files changed, 249 insertions, 8 deletions
diff --git a/src/mesa/drivers/glide/fxddspan.c b/src/mesa/drivers/glide/fxddspan.c
index 04d832d8d9..e106ce291e 100644
--- a/src/mesa/drivers/glide/fxddspan.c
+++ b/src/mesa/drivers/glide/fxddspan.c
@@ -1,4 +1,9 @@
-/* $Id: fxddspan.c,v 1.22 2002/11/04 20:29:04 brianp Exp $ */
+/* Hack alert:
+ * Depth32 functions won't compile with Glide2
+ * Optimize and check endianess for `read_R8G8B8_pixels'
+ */
+
+/* $Id: fxddspan.c,v 1.23 2003/07/17 14:50:12 brianp Exp $ */
/*
* Mesa 3-D graphics library
@@ -42,6 +47,7 @@
#if defined(FX)
#include "fxdrv.h"
+#include "fxglidew.h"
#include "swrast/swrast.h"
#ifdef _MSC_VER
@@ -347,6 +353,69 @@ read_R5G6B5_span(const GLcontext * ctx,
END_BOARD_LOCK();
}
+/*
+ * Read a span of 15-bit RGB pixels. Note, we don't worry about cliprects
+ * since OpenGL says obscured pixels have undefined values.
+ */
+static void read_R5G5B5_span (const GLcontext * ctx,
+ GLuint n,
+ GLint x, GLint y,
+ GLubyte rgba[][4])
+{
+ fxMesaContext fxMesa = (fxMesaContext) ctx->DriverCtx;
+ GrLfbInfo_t info;
+ BEGIN_BOARD_LOCK();
+ if (grLfbLock(GR_LFB_READ_ONLY,
+ fxMesa->currentFB,
+ GR_LFBWRITEMODE_ANY, GR_ORIGIN_UPPER_LEFT, FXFALSE, &info)) {
+ const GLint winX = 0;
+ const GLint winY = fxMesa->height - 1;
+ const GLint srcStride = info.strideInBytes / 2; /* stride in GLushorts */
+ const GLushort *data16 = (const GLushort *) info.lfbPtr
+ + (winY - y) * srcStride + (winX + x);
+ const GLuint *data32 = (const GLuint *) data16;
+ GLuint i, j;
+ GLuint extraPixel = (n & 1);
+ n -= extraPixel;
+ for (i = j = 0; i < n; i += 2, j++) {
+ GLuint pixel = data32[j];
+ rgba[i][RCOMP] = FX_rgb_scale_5[ pixel & 0x1f];
+ rgba[i][GCOMP] = FX_rgb_scale_5[(pixel >> 5) & 0x1f];
+ rgba[i][BCOMP] = FX_rgb_scale_5[(pixel >> 10) & 0x1f];
+ rgba[i][ACOMP] = (pixel & 0x8000) ? 255 : 0;
+ rgba[i + 1][RCOMP] = FX_rgb_scale_5[(pixel >> 16) & 0x1f];
+ rgba[i + 1][GCOMP] = FX_rgb_scale_5[(pixel >> 21) & 0x1f];
+ rgba[i + 1][BCOMP] = FX_rgb_scale_5[(pixel >> 26) & 0x1f];
+ rgba[i + 1][ACOMP] = (pixel & 0x80000000) ? 255 : 0;
+ }
+ if (extraPixel) {
+ GLushort pixel = data16[n];
+ rgba[n][RCOMP] = FX_rgb_scale_5[ pixel & 0x1f];
+ rgba[n][GCOMP] = FX_rgb_scale_5[(pixel >> 5) & 0x1f];
+ rgba[n][BCOMP] = FX_rgb_scale_5[(pixel >> 10) & 0x1f];
+ rgba[n][ACOMP] = (pixel & 0x8000) ? 255 : 0;
+ }
+
+ grLfbUnlock(GR_LFB_READ_ONLY, fxMesa->currentFB);
+ }
+ END_BOARD_LOCK();
+}
+
+/*
+ * Read a span of 32-bit RGB pixels. Note, we don't worry about cliprects
+ * since OpenGL says obscured pixels have undefined values.
+ */
+static void read_R8G8B8_span (const GLcontext * ctx,
+ GLuint n,
+ GLint x, GLint y,
+ GLubyte rgba[][4])
+{
+ fxMesaContext fxMesa = (fxMesaContext) ctx->DriverCtx;
+ BEGIN_BOARD_LOCK();
+ FX_grLfbReadRegion(fxMesa->currentFB, x, fxMesa->height - 1 - y, n, 1, n * 4, rgba);
+ END_BOARD_LOCK();
+}
+
/************************************************************************/
/***** Pixel functions *****/
@@ -424,6 +493,68 @@ read_R5G6B5_pixels(const GLcontext * ctx,
}
+static void read_R5G5B5_pixels (const GLcontext * ctx,
+ GLuint n,
+ const GLint x[], const GLint y[],
+ GLubyte rgba[][4],
+ const GLubyte mask[])
+{
+ fxMesaContext fxMesa = (fxMesaContext) ctx->DriverCtx;
+ GrLfbInfo_t info;
+ BEGIN_BOARD_LOCK();
+ if (grLfbLock(GR_LFB_READ_ONLY,
+ fxMesa->currentFB,
+ GR_LFBWRITEMODE_ANY, GR_ORIGIN_UPPER_LEFT, FXFALSE, &info)) {
+ const GLint srcStride = info.strideInBytes / 2; /* stride in GLushorts */
+ const GLint winX = 0;
+ const GLint winY = fxMesa->height - 1;
+ GLuint i;
+ for (i = 0; i < n; i++) {
+ if (mask[i]) {
+ const GLushort *data16 = (const GLushort *) info.lfbPtr
+ + (winY - y[i]) * srcStride + (winX + x[i]);
+ const GLushort pixel = *data16;
+ rgba[i][RCOMP] = FX_rgb_scale_5[ pixel & 0x1f];
+ rgba[i][GCOMP] = FX_rgb_scale_5[(pixel >> 5) & 0x1f];
+ rgba[i][BCOMP] = FX_rgb_scale_5[(pixel >> 10) & 0x1f];
+ rgba[i][ACOMP] = (pixel & 0x8000) ? 255 : 0;
+ }
+ }
+ grLfbUnlock(GR_LFB_READ_ONLY, fxMesa->currentFB);
+ }
+ END_BOARD_LOCK();
+}
+
+
+static void
+read_R8G8B8_pixels(const GLcontext * ctx,
+ GLuint n, const GLint x[], const GLint y[],
+ GLubyte rgba[][4], const GLubyte mask[])
+{
+ fxMesaContext fxMesa = (fxMesaContext) ctx->DriverCtx;
+ GrLfbInfo_t info;
+ BEGIN_BOARD_LOCK();
+ if (grLfbLock(GR_LFB_READ_ONLY,
+ fxMesa->currentFB,
+ GR_LFBWRITEMODE_ANY, GR_ORIGIN_UPPER_LEFT, FXFALSE, &info)) {
+ const GLint srcStride = info.strideInBytes / 4; /* stride in GLuints */
+ const GLint winX = 0;
+ const GLint winY = fxMesa->height - 1;
+ GLuint i;
+ for (i = 0; i < n; i++) {
+ if (mask[i]) {
+ const GLuint *data32 = (const GLuint *) info.lfbPtr
+ + (winY - y[i]) * srcStride + (winX + x[i]);
+ const GLuint pixel = *data32;
+ *(GLuint *)&rgba[i][0] = pixel;
+ }
+ }
+ grLfbUnlock(GR_LFB_READ_ONLY, fxMesa->currentFB);
+ }
+ END_BOARD_LOCK();
+}
+
+
/************************************************************************/
/***** Depth functions *****/
@@ -465,6 +596,35 @@ fxDDWriteDepthSpan(GLcontext * ctx,
void
+fxDDWriteDepth32Span(GLcontext * ctx,
+ GLuint n, GLint x, GLint y, const GLdepth depth[],
+ const GLubyte mask[])
+{
+ fxMesaContext fxMesa = (fxMesaContext) ctx->DriverCtx;
+ GLint bottom = fxMesa->height - 1;
+
+ if (MESA_VERBOSE & VERBOSE_DRIVER) {
+ fprintf(stderr, "fxmesa: fxDDWriteDepth32Span(...)\n");
+ }
+
+
+ if (mask) {
+ GLint i;
+ for (i = 0; i < n; i++) {
+ if (mask[i]) {
+ writeRegionClipped(fxMesa, GR_BUFFER_AUXBUFFER, x + i, bottom - y,
+ GR_LFBWRITEMODE_Z32, 1, 1, 0, (void *) &depth[i]);
+ }
+ }
+ }
+ else {
+ writeRegionClipped(fxMesa, GR_BUFFER_AUXBUFFER, x, bottom - y,
+ GR_LFBWRITEMODE_Z32, n, 1, 0, (void *) depth);
+ }
+}
+
+
+void
fxDDReadDepthSpan(GLcontext * ctx,
GLuint n, GLint x, GLint y, GLdepth depth[])
{
@@ -484,6 +644,21 @@ fxDDReadDepthSpan(GLcontext * ctx,
}
+void
+fxDDReadDepth32Span(GLcontext * ctx,
+ GLuint n, GLint x, GLint y, GLdepth depth[])
+{
+ fxMesaContext fxMesa = (fxMesaContext) ctx->DriverCtx;
+ GLint bottom = fxMesa->height - 1;
+
+ if (MESA_VERBOSE & VERBOSE_DRIVER) {
+ fprintf(stderr, "fxmesa: fxDDReadDepth32Span(...)\n");
+ }
+
+ FX_grLfbReadRegion(GR_BUFFER_AUXBUFFER, x, bottom - y, n, 1, 0, depth);
+}
+
+
void
fxDDWriteDepthPixels(GLcontext * ctx,
@@ -511,6 +686,30 @@ fxDDWriteDepthPixels(GLcontext * ctx,
void
+fxDDWriteDepth32Pixels(GLcontext * ctx,
+ GLuint n, const GLint x[], const GLint y[],
+ const GLdepth depth[], const GLubyte mask[])
+{
+ fxMesaContext fxMesa = (fxMesaContext) ctx->DriverCtx;
+ GLint bottom = fxMesa->height - 1;
+ GLuint i;
+
+ if (MESA_VERBOSE & VERBOSE_DRIVER) {
+ fprintf(stderr, "fxmesa: fxDDWriteDepth32Pixels(...)\n");
+ }
+
+ for (i = 0; i < n; i++) {
+ if (mask[i]) {
+ int xpos = x[i];
+ int ypos = bottom - y[i];
+ writeRegionClipped(fxMesa, GR_BUFFER_AUXBUFFER, xpos, ypos,
+ GR_LFBWRITEMODE_Z32, 1, 1, 0, (void *) &depth[i]);
+ }
+ }
+}
+
+
+void
fxDDReadDepthPixels(GLcontext * ctx, GLuint n,
const GLint x[], const GLint y[], GLdepth depth[])
{
@@ -532,6 +731,26 @@ fxDDReadDepthPixels(GLcontext * ctx, GLuint n,
}
+void
+fxDDReadDepth32Pixels(GLcontext * ctx, GLuint n,
+ const GLint x[], const GLint y[], GLdepth depth[])
+{
+ fxMesaContext fxMesa = (fxMesaContext) ctx->DriverCtx;
+ GLint bottom = fxMesa->height - 1;
+ GLuint i;
+
+ if (MESA_VERBOSE & VERBOSE_DRIVER) {
+ fprintf(stderr, "fxmesa: fxDDReadDepth32Pixels(...)\n");
+ }
+
+ for (i = 0; i < n; i++) {
+ int xpos = x[i];
+ int ypos = bottom - y[i];
+ FX_grLfbReadRegion(GR_BUFFER_AUXBUFFER, xpos, ypos, 1, 1, 0, &depth[i]);
+ }
+}
+
+
/* Set the buffer used for reading */
/* XXX support for separate read/draw buffers hasn't been tested */
@@ -573,14 +792,36 @@ fxSetupDDSpanPointers(GLcontext * ctx)
swdd->WriteRGBAPixels = fxDDWriteRGBAPixels;
swdd->WriteMonoRGBAPixels = fxDDWriteMonoRGBAPixels;
- swdd->WriteDepthSpan = fxDDWriteDepthSpan;
- swdd->WriteDepthPixels = fxDDWriteDepthPixels;
- swdd->ReadDepthSpan = fxDDReadDepthSpan;
- swdd->ReadDepthPixels = fxDDReadDepthPixels;
-
/* swdd->ReadRGBASpan =fxDDReadRGBASpan; */
- swdd->ReadRGBASpan = read_R5G6B5_span;
- swdd->ReadRGBAPixels = read_R5G6B5_pixels;
+ {
+ fxMesaContext fxMesa = (fxMesaContext) ctx->DriverCtx;
+ switch (fxMesa->colDepth) {
+ case 15:
+ swdd->ReadRGBASpan = read_R5G5B5_span;
+ swdd->ReadRGBAPixels = read_R5G5B5_pixels;
+ swdd->WriteDepthSpan = fxDDWriteDepthSpan;
+ swdd->WriteDepthPixels = fxDDWriteDepthPixels;
+ swdd->ReadDepthSpan = fxDDReadDepthSpan;
+ swdd->ReadDepthPixels = fxDDReadDepthPixels;
+ break;
+ case 16:
+ swdd->ReadRGBASpan = read_R5G6B5_span;
+ swdd->ReadRGBAPixels = read_R5G6B5_pixels;
+ swdd->WriteDepthSpan = fxDDWriteDepthSpan;
+ swdd->WriteDepthPixels = fxDDWriteDepthPixels;
+ swdd->ReadDepthSpan = fxDDReadDepthSpan;
+ swdd->ReadDepthPixels = fxDDReadDepthPixels;
+ break;
+ case 32:
+ swdd->ReadRGBASpan = read_R8G8B8_span;
+ swdd->ReadRGBAPixels = read_R8G8B8_pixels;
+ swdd->WriteDepthSpan = fxDDWriteDepth32Span;
+ swdd->WriteDepthPixels = fxDDWriteDepth32Pixels;
+ swdd->ReadDepthSpan = fxDDReadDepth32Span;
+ swdd->ReadDepthPixels = fxDDReadDepth32Pixels;
+ break;
+ }
+ }
}
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