-/* $Id: fxddspan.c,v 1.26 2003/10/09 15:12:21 dborca Exp $ */
-
/*
* Mesa 3-D graphics library
* Version: 4.0
#include "swrast/swrast.h"
-#define writeRegionClipped(fxm,dst_buffer,dst_x,dst_y,src_format,src_width,src_height,src_stride,src_data) \
- FX_grLfbWriteRegion(dst_buffer,dst_x,dst_y,src_format,src_width,src_height,src_stride,src_data)
-
-
-
-/* KW: Rearranged the args in the call to grLfbWriteRegion().
- */
-#define LFB_WRITE_SPAN_MESA(dst_buffer, \
- dst_x, \
- dst_y, \
- src_width, \
- src_stride, \
- src_data) \
- writeRegionClipped(fxMesa, dst_buffer, \
- dst_x, \
- dst_y, \
- GR_LFB_SRC_FMT_8888, \
- src_width, \
- 1, \
- src_stride, \
- src_data) \
-
-
/************************************************************************/
/***** Span functions *****/
/************************************************************************/
-#define TDFXPACKCOLOR1555( r, g, b, a ) \
- ((((r) & 0xf8) << 7) | (((g) & 0xf8) << 2) | (((b) & 0xf8) >> 3) | \
- ((a) ? 0x8000 : 0))
-#define TDFXPACKCOLOR565( r, g, b ) \
- ((((r) & 0xf8) << 8) | (((g) & 0xfc) << 3) | (((b) & 0xf8) >> 3))
-#define TDFXPACKCOLOR8888( r, g, b, a ) \
- (((a) << 24) | ((r) << 16) | ((g) << 8) | (b))
-/************************************************************************/
-
#define DBG 0
#define HW_WRITE_CLIPLOOP() \
do { \
int _nc = 1; /* numcliprects */ \
+ /* [dBorca] Hack alert: */ \
+ /* remember, we need to flip the scissor, too */ \
+ /* is it better to do it inside fxDDScissor? */ \
while (_nc--) { \
const int minx = fxMesa->clipMinX; \
- const int miny = fxMesa->clipMinY; \
+ const int maxy = Y_FLIP(fxMesa->clipMinY); \
const int maxx = fxMesa->clipMaxX; \
- const int maxy = fxMesa->clipMaxY;
+ const int miny = Y_FLIP(fxMesa->clipMaxY);
#define HW_READ_CLIPLOOP() \
do { \
int _nc = 1; /* numcliprects */ \
+ /* [dBorca] Hack alert: */ \
+ /* remember, we need to flip the scissor, too */ \
+ /* is it better to do it inside fxDDScissor? */ \
while (_nc--) { \
const int minx = fxMesa->clipMinX; \
- const int miny = fxMesa->clipMinY; \
+ const int maxy = Y_FLIP(fxMesa->clipMinY); \
const int maxx = fxMesa->clipMaxX; \
- const int maxy = fxMesa->clipMaxY;
+ const int miny = Y_FLIP(fxMesa->clipMaxY);
#define HW_ENDCLIPLOOP() \
} \
/* 16 bit, RGB565 color spanline and pixel functions */
+/* [dBorca] Hack alert:
+ * This is wrong. The alpha value is lost, even when we provide
+ * HW alpha (565 w/o depth buffering). To really update alpha buffer,
+ * we would need to do the 565 writings via 8888 colorformat and rely
+ * on the Voodoo to perform color scaling. In which case our 565 span
+ * would look nicer! But this violates FSAA rules...
+ */
#undef LFB_MODE
#define LFB_MODE GR_LFBWRITEMODE_565
#include "../dri/common/spantmp.h"
+/************************************************************************/
+/***** Depth functions *****/
+/************************************************************************/
+
+#define DBG 0
+
+#undef HW_WRITE_LOCK
+#undef HW_WRITE_UNLOCK
+#undef HW_READ_LOCK
+#undef HW_READ_UNLOCK
+
+#define HW_CLIPLOOP HW_WRITE_CLIPLOOP
+
+#define LOCAL_DEPTH_VARS \
+ GLuint pitch = info.strideInBytes; \
+ GLuint height = fxMesa->height; \
+ char *buf = (char *)((char *)info.lfbPtr + 0 /* x, y offset */); \
+ (void) buf;
+
+#define HW_WRITE_LOCK() \
+ fxMesaContext fxMesa = FX_CONTEXT(ctx); \
+ GrLfbInfo_t info; \
+ info.size = sizeof(GrLfbInfo_t); \
+ if ( grLfbLock( GR_LFB_WRITE_ONLY, \
+ GR_BUFFER_AUXBUFFER, LFB_MODE, \
+ GR_ORIGIN_UPPER_LEFT, FXFALSE, &info ) ) {
+
+#define HW_WRITE_UNLOCK() \
+ grLfbUnlock( GR_LFB_WRITE_ONLY, GR_BUFFER_AUXBUFFER); \
+ }
+
+#define HW_READ_LOCK() \
+ fxMesaContext fxMesa = FX_CONTEXT(ctx); \
+ GrLfbInfo_t info; \
+ info.size = sizeof(GrLfbInfo_t); \
+ if ( grLfbLock( GR_LFB_READ_ONLY, GR_BUFFER_AUXBUFFER, \
+ LFB_MODE, GR_ORIGIN_UPPER_LEFT, FXFALSE, &info ) ) {
+
+#define HW_READ_UNLOCK() \
+ grLfbUnlock( GR_LFB_READ_ONLY, GR_BUFFER_AUXBUFFER); \
+ }
+
+
+/* 16 bit, depth spanline and pixel functions */
+
+#undef LFB_MODE
+#define LFB_MODE GR_LFBWRITEMODE_ZA16
+
+#undef BYTESPERPIXEL
+#define BYTESPERPIXEL 2
+
+#define WRITE_DEPTH( _x, _y, d ) \
+ *(GLushort *)(buf + _x*BYTESPERPIXEL + _y*pitch) = d
+
+#define READ_DEPTH( d, _x, _y ) \
+ d = *(GLushort *)(buf + _x*BYTESPERPIXEL + _y*pitch)
+
+#define TAG(x) tdfx##x##_Z16
+#include "../dri/common/depthtmp.h"
+
+
+/* 24 bit, depth spanline and pixel functions (for use w/ stencil) */
+/* [dBorca] Hack alert:
+ * This is evil. The incoming Mesa's 24bit depth value
+ * is shifted left 8 bits, to obtain a full 32bit value,
+ * which will be thrown into the framebuffer. We rely on
+ * the fact that Voodoo hardware transforms a 32bit value
+ * into 24bit value automatically and, MOST IMPORTANT, won't
+ * alter the upper 8bits of the value already existing in the
+ * framebuffer (where stencil resides).
+ */
+
+#undef LFB_MODE
+#define LFB_MODE GR_LFBWRITEMODE_Z32
+
+#undef BYTESPERPIXEL
+#define BYTESPERPIXEL 4
+
+#define WRITE_DEPTH( _x, _y, d ) \
+ *(GLuint *)(buf + _x*BYTESPERPIXEL + _y*pitch) = d << 8
+
+#define READ_DEPTH( d, _x, _y ) \
+ d = (*(GLuint *)(buf + _x*BYTESPERPIXEL + _y*pitch)) & 0xffffff
+
+#define TAG(x) tdfx##x##_Z24
+#include "../dri/common/depthtmp.h"
+
+
+/* 32 bit, depth spanline and pixel functions (for use w/o stencil) */
+/* [dBorca] Hack alert:
+ * This is more evil. We make Mesa run in 32bit depth, but
+ * tha Voodoo HW can only handle 24bit depth. Well, exploiting
+ * the pixel pipeline, we can achieve 24:8 format for greater
+ * precision...
+ * If anyone tells me how to really store 32bit values into the
+ * depth buffer, I'll write the *_Z32 routines. Howver, bear in
+ * mind that means running without stencil!
+ */
+
/************************************************************************/
/***** Span functions (optimized) *****/
/************************************************************************/
GLint x, GLint y,
GLubyte rgba[][4])
{
- /* Hack alert: WRONG! */
fxMesaContext fxMesa = FX_CONTEXT(ctx);
+ GLuint i;
grLfbReadRegion(fxMesa->currentFB, x, fxMesa->height - 1 - y, n, 1, n * 4, rgba);
+ for (i = 0; i < n; i++) {
+ GLubyte c = rgba[i][0];
+ rgba[i][0] = rgba[i][2];
+ rgba[i][2] = c;
+ }
}
/************************************************************************/
-/***** Depth functions *****/
+/***** Depth functions (optimized) *****/
/************************************************************************/
void
-fxDDWriteDepthSpan(GLcontext * ctx,
- GLuint n, GLint x, GLint y, const GLdepth depth[],
- const GLubyte mask[])
-{
- fxMesaContext fxMesa = FX_CONTEXT(ctx);
- GLint bottom = fxMesa->height - 1;
-
- if (TDFX_DEBUG & VERBOSE_DRIVER) {
- fprintf(stderr, "%s(...)\n", __FUNCTION__);
- }
-
-
- if (mask) {
- GLint i;
- for (i = 0; i < n; i++) {
- if (mask[i]) {
- GLshort d = depth[i];
- writeRegionClipped(fxMesa, GR_BUFFER_AUXBUFFER, x + i, bottom - y,
- GR_LFB_SRC_FMT_ZA16, 1, 1, 0, (void *) &d);
- }
- }
- }
- else {
- GLushort depth16[MAX_WIDTH];
- GLint i;
- for (i = 0; i < n; i++) {
- depth16[i] = depth[i];
- }
- writeRegionClipped(fxMesa, GR_BUFFER_AUXBUFFER, x, bottom - y,
- GR_LFB_SRC_FMT_ZA16, n, 1, 0, (void *) depth16);
- }
-}
-
-
-void
-fxDDWriteDepth32Span(GLcontext * ctx,
- GLuint n, GLint x, GLint y, const GLdepth depth[],
- const GLubyte mask[])
-{
- fxMesaContext fxMesa = FX_CONTEXT(ctx);
- GLint bottom = fxMesa->height - 1;
- GLint i;
-
- if (TDFX_DEBUG & VERBOSE_DRIVER) {
- fprintf(stderr, "%s(...)\n", __FUNCTION__);
- }
-
-
- if (mask) {
- for (i = 0; i < n; i++) {
- if (mask[i]) {
- GLuint d = depth[i] << 8;
- writeRegionClipped(fxMesa, GR_BUFFER_AUXBUFFER, x + i, bottom - y,
- GR_LFBWRITEMODE_Z32, 1, 1, 0, (void *) &d);
- }
- }
- }
- else {
- GLuint depth32[MAX_WIDTH];
- for (i = 0; i < n; i++) {
- depth32[i] = depth[i] << 8;
- }
- writeRegionClipped(fxMesa, GR_BUFFER_AUXBUFFER, x, bottom - y,
- GR_LFBWRITEMODE_Z32, n, 1, 0, (void *) depth32);
- }
-}
-
-
-void
-fxDDReadDepthSpan(GLcontext * ctx,
- GLuint n, GLint x, GLint y, GLdepth depth[])
+fxReadDepthSpan_Z16(GLcontext * ctx,
+ GLuint n, GLint x, GLint y, GLdepth depth[])
{
fxMesaContext fxMesa = FX_CONTEXT(ctx);
GLint bottom = fxMesa->height - 1;
void
-fxDDReadDepth32Span(GLcontext * ctx,
- GLuint n, GLint x, GLint y, GLdepth depth[])
+fxReadDepthSpan_Z24(GLcontext * ctx,
+ GLuint n, GLint x, GLint y, GLdepth depth[])
{
fxMesaContext fxMesa = FX_CONTEXT(ctx);
GLint bottom = fxMesa->height - 1;
+ GLuint i;
if (TDFX_DEBUG & VERBOSE_DRIVER) {
fprintf(stderr, "%s(...)\n", __FUNCTION__);
}
grLfbReadRegion(GR_BUFFER_AUXBUFFER, x, bottom - y, n, 1, 0, depth);
+ for (i = 0; i < n; i++) {
+ depth[i] &= 0xffffff;
+ }
}
+/************************************************************************/
+/***** Stencil functions (optimized) *****/
+/************************************************************************/
-void
-fxDDWriteDepthPixels(GLcontext * ctx,
- GLuint n, const GLint x[], const GLint y[],
- const GLdepth depth[], const GLubyte mask[])
+void fxWriteStencilSpan (GLcontext *ctx, GLuint n, GLint x, GLint y,
+ const GLstencil stencil[], const GLubyte mask[])
{
- fxMesaContext fxMesa = FX_CONTEXT(ctx);
- GLint bottom = fxMesa->height - 1;
- GLuint i;
-
- if (TDFX_DEBUG & VERBOSE_DRIVER) {
- fprintf(stderr, "%s(...)\n", __FUNCTION__);
- }
-
- for (i = 0; i < n; i++) {
- if (mask[i]) {
- int xpos = x[i];
- int ypos = bottom - y[i];
- GLushort d = depth[i];
- writeRegionClipped(fxMesa, GR_BUFFER_AUXBUFFER, xpos, ypos,
- GR_LFB_SRC_FMT_ZA16, 1, 1, 0, (void *) &d);
- }
- }
+ /*
+ * XXX todo
+ */
}
-
void
-fxDDWriteDepth32Pixels(GLcontext * ctx,
- GLuint n, const GLint x[], const GLint y[],
- const GLdepth depth[], const GLubyte mask[])
+fxReadStencilSpan(GLcontext * ctx,
+ GLuint n, GLint x, GLint y, GLstencil stencil[])
{
fxMesaContext fxMesa = FX_CONTEXT(ctx);
GLint bottom = fxMesa->height - 1;
+ GLuint zs32[MAX_WIDTH];
GLuint i;
if (TDFX_DEBUG & VERBOSE_DRIVER) {
fprintf(stderr, "%s(...)\n", __FUNCTION__);
}
+ grLfbReadRegion(GR_BUFFER_AUXBUFFER, x, bottom - y, n, 1, 0, zs32);
for (i = 0; i < n; i++) {
- if (mask[i]) {
- int xpos = x[i];
- int ypos = bottom - y[i];
- GLuint d = depth[i] << 8;
- writeRegionClipped(fxMesa, GR_BUFFER_AUXBUFFER, xpos, ypos,
- GR_LFBWRITEMODE_Z32, 1, 1, 0, (void *) &d);
- }
+ stencil[i] = zs32[i] >> 24;
}
}
-
-void
-fxDDReadDepthPixels(GLcontext * ctx, GLuint n,
- const GLint x[], const GLint y[], GLdepth depth[])
+void fxWriteStencilPixels (GLcontext *ctx, GLuint n,
+ const GLint x[], const GLint y[],
+ const GLstencil stencil[],
+ const GLubyte mask[])
{
- fxMesaContext fxMesa = FX_CONTEXT(ctx);
- GLint bottom = fxMesa->height - 1;
- GLuint i;
-
- if (TDFX_DEBUG & VERBOSE_DRIVER) {
- fprintf(stderr, "%s(...)\n", __FUNCTION__);
- }
-
- for (i = 0; i < n; i++) {
- int xpos = x[i];
- int ypos = bottom - y[i];
- GLushort d;
- grLfbReadRegion(GR_BUFFER_AUXBUFFER, xpos, ypos, 1, 1, 0, &d);
- depth[i] = d;
- }
+ /*
+ * XXX todo
+ */
}
-
-void
-fxDDReadDepth32Pixels(GLcontext * ctx, GLuint n,
- const GLint x[], const GLint y[], GLdepth depth[])
+void fxReadStencilPixels (GLcontext *ctx, GLuint n,
+ const GLint x[], const GLint y[],
+ GLstencil stencil[])
{
- fxMesaContext fxMesa = FX_CONTEXT(ctx);
- GLint bottom = fxMesa->height - 1;
- GLuint i;
-
- if (TDFX_DEBUG & VERBOSE_DRIVER) {
- fprintf(stderr, "%s(...)\n", __FUNCTION__);
- }
-
- for (i = 0; i < n; i++) {
- int xpos = x[i];
- int ypos = bottom - y[i];
- grLfbReadRegion(GR_BUFFER_AUXBUFFER, xpos, ypos, 1, 1, 0, &depth[i]);
- }
+ /*
+ * XXX todo
+ */
}
-/* Set the buffer used for reading */
-/* XXX support for separate read/draw buffers hasn't been tested */
+/*
+ * This function is called to specify which buffer to read and write
+ * for software rasterization (swrast) fallbacks. This doesn't necessarily
+ * correspond to glDrawBuffer() or glReadBuffer() calls.
+ */
static void
fxDDSetBuffer(GLcontext * ctx, GLframebuffer * buffer, GLuint bufferBit)
{
swdd->ReadRGBASpan = /*td*/fxReadRGBASpan_ARGB1555;
swdd->ReadRGBAPixels = tdfxReadRGBAPixels_ARGB1555;
- swdd->WriteDepthSpan = fxDDWriteDepthSpan;
- swdd->WriteDepthPixels = fxDDWriteDepthPixels;
- swdd->ReadDepthSpan = fxDDReadDepthSpan;
- swdd->ReadDepthPixels = fxDDReadDepthPixels;
+ swdd->WriteDepthSpan = tdfxWriteDepthSpan_Z16;
+ swdd->WriteDepthPixels = tdfxWriteDepthPixels_Z16;
+ swdd->ReadDepthSpan = /*td*/fxReadDepthSpan_Z16;
+ swdd->ReadDepthPixels = tdfxReadDepthPixels_Z16;
break;
case 16:
swdd->WriteRGBASpan = tdfxWriteRGBASpan_RGB565;
swdd->WriteMonoRGBAPixels = tdfxWriteMonoRGBAPixels_RGB565;
swdd->ReadRGBASpan = /*td*/fxReadRGBASpan_RGB565;
swdd->ReadRGBAPixels = tdfxReadRGBAPixels_RGB565;
-
- swdd->WriteDepthSpan = fxDDWriteDepthSpan;
- swdd->WriteDepthPixels = fxDDWriteDepthPixels;
- swdd->ReadDepthSpan = fxDDReadDepthSpan;
- swdd->ReadDepthPixels = fxDDReadDepthPixels;
+
+ swdd->WriteDepthSpan = tdfxWriteDepthSpan_Z16;
+ swdd->WriteDepthPixels = tdfxWriteDepthPixels_Z16;
+ swdd->ReadDepthSpan = /*td*/fxReadDepthSpan_Z16;
+ swdd->ReadDepthPixels = tdfxReadDepthPixels_Z16;
break;
case 32:
swdd->WriteRGBASpan = tdfxWriteRGBASpan_ARGB8888;
swdd->WriteRGBAPixels = tdfxWriteRGBAPixels_ARGB8888;
swdd->WriteMonoRGBASpan = tdfxWriteMonoRGBASpan_ARGB8888;
swdd->WriteMonoRGBAPixels = tdfxWriteMonoRGBAPixels_ARGB8888;
- swdd->ReadRGBASpan = tdfxReadRGBASpan_ARGB8888;
+ swdd->ReadRGBASpan = /*td*/fxReadRGBASpan_ARGB8888;
swdd->ReadRGBAPixels = tdfxReadRGBAPixels_ARGB8888;
- swdd->WriteDepthSpan = fxDDWriteDepth32Span;
- swdd->WriteDepthPixels = fxDDWriteDepth32Pixels;
- swdd->ReadDepthSpan = fxDDReadDepth32Span;
- swdd->ReadDepthPixels = fxDDReadDepth32Pixels;
+ swdd->WriteDepthSpan = tdfxWriteDepthSpan_Z24;
+ swdd->WriteDepthPixels = tdfxWriteDepthPixels_Z24;
+ swdd->ReadDepthSpan = /*td*/fxReadDepthSpan_Z24;
+ swdd->ReadDepthPixels = tdfxReadDepthPixels_Z24;
break;
}
-#if 0
- if ( fxMesa->haveHwStencil ) {
- swdd->WriteStencilSpan = write_stencil_span;
- swdd->ReadStencilSpan = read_stencil_span;
- swdd->WriteStencilPixels = write_stencil_pixels;
- swdd->ReadStencilPixels = read_stencil_pixels;
+ if (fxMesa->haveHwStencil) {
+ swdd->WriteStencilSpan = fxWriteStencilSpan;
+ swdd->ReadStencilSpan = fxReadStencilSpan;
+ swdd->WriteStencilPixels = fxWriteStencilPixels;
+ swdd->ReadStencilPixels = fxReadStencilPixels;
}
-
- swdd->WriteDepthSpan = tdfxDDWriteDepthSpan;
- swdd->WriteDepthPixels = tdfxDDWriteDepthPixels;
- swdd->ReadDepthSpan = tdfxDDReadDepthSpan;
- swdd->ReadDepthPixels = tdfxDDReadDepthPixels;
-
+#if 0
swdd->WriteCI8Span = NULL;
swdd->WriteCI32Span = NULL;
swdd->WriteMonoCISpan = NULL;
swdd->ReadCI32Span = NULL;
swdd->ReadCI32Pixels = NULL;
- swdd->SpanRenderStart = tdfxSpanRenderStart; /* BEGIN_BOARD_LOCK */
- swdd->SpanRenderFinish = tdfxSpanRenderFinish; /* END_BOARD_LOCK */
+ swdd->SpanRenderStart = tdfxSpanRenderStart; /* BEGIN_BOARD_LOCK */
+ swdd->SpanRenderFinish = tdfxSpanRenderFinish; /* END_BOARD_LOCK */
#endif
}
projects / mesa.git / blobdiff