diff options
Diffstat (limited to 'src/mesa/swrast/s_depth.c')
| -rw-r--r-- | src/mesa/swrast/s_depth.c | 912 |
1 files changed, 236 insertions, 676 deletions
diff --git a/src/mesa/swrast/s_depth.c b/src/mesa/swrast/s_depth.c index 0142fe15520..e36878e6fc8 100644 --- a/src/mesa/swrast/s_depth.c +++ b/src/mesa/swrast/s_depth.c @@ -1,8 +1,8 @@ /* * Mesa 3-D graphics library - * Version: 5.1 + * Version: 6.3 * - * Copyright (C) 1999-2003 Brian Paul All Rights Reserved. + * Copyright (C) 1999-2005 Brian Paul 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"), @@ -27,51 +27,21 @@ #include "context.h" #include "macros.h" #include "imports.h" +#include "fbobject.h" #include "s_depth.h" #include "s_context.h" /** - * Return address of depth buffer value for given window coord. - */ -GLvoid * -_swrast_zbuffer_address(GLcontext *ctx, GLint x, GLint y) -{ - if (ctx->Visual.depthBits <= 16) - return (GLushort *) ctx->DrawBuffer->DepthBuffer - + ctx->DrawBuffer->Width * y + x; - else - return (GLuint *) ctx->DrawBuffer->DepthBuffer - + ctx->DrawBuffer->Width * y + x; -} - - -#define Z_ADDRESS16( CTX, X, Y ) \ - ( ((GLushort *) (CTX)->DrawBuffer->DepthBuffer) \ - + (CTX)->DrawBuffer->Width * (Y) + (X) ) - -#define Z_ADDRESS32( CTX, X, Y ) \ - ( ((GLuint *) (CTX)->DrawBuffer->DepthBuffer) \ - + (CTX)->DrawBuffer->Width * (Y) + (X) ) - - - -/**********************************************************************/ -/***** Depth Testing Functions *****/ -/**********************************************************************/ - - -/* - * Do depth test for an array of fragments. This is used both for - * software and hardware Z buffers. + * Do depth test for a horizontal span of fragments. * Input: zbuffer - array of z values in the zbuffer * z - array of fragment z values * Return: number of fragments which pass the test. */ static GLuint depth_test_span16( GLcontext *ctx, GLuint n, - GLushort zbuffer[], const GLdepth z[], GLubyte mask[] ) + GLushort zbuffer[], const GLuint z[], GLubyte mask[] ) { GLuint passed = 0; @@ -300,7 +270,7 @@ depth_test_span16( GLcontext *ctx, GLuint n, static GLuint depth_test_span32( GLcontext *ctx, GLuint n, - GLuint zbuffer[], const GLdepth z[], GLubyte mask[] ) + GLuint zbuffer[], const GLuint z[], GLubyte mask[] ) { GLuint passed = 0; @@ -529,74 +499,69 @@ depth_test_span32( GLcontext *ctx, GLuint n, /* - * Apply depth test to span of fragments. Hardware or software z buffer. + * Apply depth test to span of fragments. */ static GLuint depth_test_span( GLcontext *ctx, struct sw_span *span) { + struct gl_framebuffer *fb = ctx->DrawBuffer; + struct gl_renderbuffer *rb = fb->Attachment[BUFFER_DEPTH].Renderbuffer; const GLint x = span->x; const GLint y = span->y; - const GLuint n = span->end; - SWcontext *swrast = SWRAST_CONTEXT(ctx); + const GLuint count = span->end; + const GLuint *zValues = span->array->z; + GLubyte *mask = span->array->mask; + GLuint passed; ASSERT((span->arrayMask & SPAN_XY) == 0); ASSERT(span->arrayMask & SPAN_Z); - if (swrast->Driver.ReadDepthSpan) { - /* hardware-based depth buffer */ - GLdepth zbuffer[MAX_WIDTH]; - GLuint passed; - (*swrast->Driver.ReadDepthSpan)(ctx, n, x, y, zbuffer); - passed = depth_test_span32(ctx, n, zbuffer, span->array->z, - span->array->mask); - ASSERT(swrast->Driver.WriteDepthSpan); - (*swrast->Driver.WriteDepthSpan)(ctx, n, x, y, zbuffer, - span->array->mask); - if (passed < n) - span->writeAll = GL_FALSE; - return passed; - } - else { - GLuint passed; - /* software depth buffer */ - if (ctx->Visual.depthBits <= 16) { - GLushort *zptr = (GLushort *) Z_ADDRESS16(ctx, x, y); - passed = depth_test_span16(ctx, n, zptr, span->array->z, span->array->mask); + if (rb->GetPointer(ctx, rb, 0, 0)) { + /* Directly access buffer */ + if (ctx->DrawBuffer->Visual.depthBits <= 16) { + GLushort *zbuffer = (GLushort *) rb->GetPointer(ctx, rb, x, y); + passed = depth_test_span16(ctx, count, zbuffer, zValues, mask); } else { - GLuint *zptr = (GLuint *) Z_ADDRESS32(ctx, x, y); - passed = depth_test_span32(ctx, n, zptr, span->array->z, span->array->mask); + GLuint *zbuffer = (GLuint *) rb->GetPointer(ctx, rb, x, y); + passed = depth_test_span32(ctx, count, zbuffer, zValues, mask); } -#if 1 - if (passed < span->end) { - span->writeAll = GL_FALSE; + } + else { + /* read depth values from buffer, test, write back */ + if (rb->DataType == GL_UNSIGNED_SHORT) { + GLushort zbuffer[MAX_WIDTH]; + rb->GetRow(ctx, rb, count, x, y, zbuffer); + passed = depth_test_span16(ctx, count, zbuffer, zValues, mask ); + rb->PutRow(ctx, rb, count, x, y, zbuffer, NULL); } -#else - /* this causes a glDrawPixels(GL_DEPTH_COMPONENT) conformance failure */ - if (passed < span->end) { - span->writeAll = GL_FALSE; - if (passed == 0) { - span->end = 0; - return 0; - } - while (span->end > 0 && span->mask[span->end - 1] == 0) - span->end --; + else { + GLuint zbuffer[MAX_WIDTH]; + ASSERT(rb->DataType == GL_UNSIGNED_INT); + rb->GetRow(ctx, rb, count, x, y, zbuffer); + passed = depth_test_span32(ctx, count, zbuffer, zValues, mask ); + rb->PutRow(ctx, rb, count, x, y, zbuffer, NULL); } -#endif - return passed; } + + if (passed < count) { + span->writeAll = GL_FALSE; + } + return passed; } +#define Z_ADDRESS(X, Y) (zStart + (Y) * stride + (X)) + /* - * Do depth testing for an array of fragments using software Z buffer. + * Do depth testing for an array of fragments at assorted locations. */ static void -software_depth_test_pixels16( GLcontext *ctx, GLuint n, - const GLint x[], const GLint y[], - const GLdepth z[], GLubyte mask[] ) +direct_depth_test_pixels16(GLcontext *ctx, GLushort *zStart, GLuint stride, + GLuint n, const GLint x[], const GLint y[], + const GLuint z[], GLubyte mask[] ) { /* switch cases ordered from most frequent to less frequent */ switch (ctx->Depth.Func) { @@ -606,7 +571,7 @@ software_depth_test_pixels16( GLcontext *ctx, GLuint n, GLuint i; for (i=0; i<n; i++) { if (mask[i]) { - GLushort *zptr = Z_ADDRESS16(ctx,x[i],y[i]); + GLushort *zptr = Z_ADDRESS(x[i], y[i]); if (z[i] < *zptr) { /* pass */ *zptr = z[i]; @@ -623,7 +588,7 @@ software_depth_test_pixels16( GLcontext *ctx, GLuint n, GLuint i; for (i=0; i<n; i++) { if (mask[i]) { - GLushort *zptr = Z_ADDRESS16(ctx,x[i],y[i]); + GLushort *zptr = Z_ADDRESS(x[i], y[i]); if (z[i] < *zptr) { /* pass */ } @@ -641,7 +606,7 @@ software_depth_test_pixels16( GLcontext *ctx, GLuint n, GLuint i; for (i=0; i<n; i++) { if (mask[i]) { - GLushort *zptr = Z_ADDRESS16(ctx,x[i],y[i]); + GLushort *zptr = Z_ADDRESS(x[i], y[i]); if (z[i] <= *zptr) { /* pass */ *zptr = z[i]; @@ -658,7 +623,7 @@ software_depth_test_pixels16( GLcontext *ctx, GLuint n, GLuint i; for (i=0; i<n; i++) { if (mask[i]) { - GLushort *zptr = Z_ADDRESS16(ctx,x[i],y[i]); + GLushort *zptr = Z_ADDRESS(x[i], y[i]); if (z[i] <= *zptr) { /* pass */ } @@ -676,7 +641,7 @@ software_depth_test_pixels16( GLcontext *ctx, GLuint n, GLuint i; for (i=0; i<n; i++) { if (mask[i]) { - GLushort *zptr = Z_ADDRESS16(ctx,x[i],y[i]); + GLushort *zptr = Z_ADDRESS(x[i], y[i]); if (z[i] >= *zptr) { /* pass */ *zptr = z[i]; @@ -693,7 +658,7 @@ software_depth_test_pixels16( GLcontext *ctx, GLuint n, GLuint i; for (i=0; i<n; i++) { if (mask[i]) { - GLushort *zptr = Z_ADDRESS16(ctx,x[i],y[i]); + GLushort *zptr = Z_ADDRESS(x[i], y[i]); if (z[i] >= *zptr) { /* pass */ } @@ -711,7 +676,7 @@ software_depth_test_pixels16( GLcontext *ctx, GLuint n, GLuint i; for (i=0; i<n; i++) { if (mask[i]) { - GLushort *zptr = Z_ADDRESS16(ctx,x[i],y[i]); + GLushort *zptr = Z_ADDRESS(x[i], y[i]); if (z[i] > *zptr) { /* pass */ *zptr = z[i]; @@ -728,7 +693,7 @@ software_depth_test_pixels16( GLcontext *ctx, GLuint n, GLuint i; for (i=0; i<n; i++) { if (mask[i]) { - GLushort *zptr = Z_ADDRESS16(ctx,x[i],y[i]); + GLushort *zptr = Z_ADDRESS(x[i], y[i]); if (z[i] > *zptr) { /* pass */ } @@ -746,7 +711,7 @@ software_depth_test_pixels16( GLcontext *ctx, GLuint n, GLuint i; for (i=0; i<n; i++) { if (mask[i]) { - GLushort *zptr = Z_ADDRESS16(ctx,x[i],y[i]); + GLushort *zptr = Z_ADDRESS(x[i], y[i]); if (z[i] != *zptr) { /* pass */ *zptr = z[i]; @@ -763,7 +728,7 @@ software_depth_test_pixels16( GLcontext *ctx, GLuint n, GLuint i; for (i=0; i<n; i++) { if (mask[i]) { - GLushort *zptr = Z_ADDRESS16(ctx,x[i],y[i]); + GLushort *zptr = Z_ADDRESS(x[i], y[i]); if (z[i] != *zptr) { /* pass */ } @@ -781,7 +746,7 @@ software_depth_test_pixels16( GLcontext *ctx, GLuint n, GLuint i; for (i=0; i<n; i++) { if (mask[i]) { - GLushort *zptr = Z_ADDRESS16(ctx,x[i],y[i]); + GLushort *zptr = Z_ADDRESS(x[i], y[i]); if (z[i] == *zptr) { /* pass */ *zptr = z[i]; @@ -798,7 +763,7 @@ software_depth_test_pixels16( GLcontext *ctx, GLuint n, GLuint i; for (i=0; i<n; i++) { if (mask[i]) { - GLushort *zptr = Z_ADDRESS16(ctx,x[i],y[i]); + GLushort *zptr = Z_ADDRESS(x[i], y[i]); if (z[i] == *zptr) { /* pass */ } @@ -816,7 +781,7 @@ software_depth_test_pixels16( GLcontext *ctx, GLuint n, GLuint i; for (i=0; i<n; i++) { if (mask[i]) { - GLushort *zptr = Z_ADDRESS16(ctx,x[i],y[i]); + GLushort *zptr = Z_ADDRESS(x[i], y[i]); *zptr = z[i]; } } @@ -830,19 +795,19 @@ software_depth_test_pixels16( GLcontext *ctx, GLuint n, _mesa_bzero(mask, n * sizeof(GLubyte)); break; default: - _mesa_problem(ctx, "Bad depth func in software_depth_test_pixels"); + _mesa_problem(ctx, "Bad depth func in direct_depth_test_pixels"); } } /* - * Do depth testing for an array of fragments using software Z buffer. + * Do depth testing for an array of fragments with direct access to zbuffer. */ static void -software_depth_test_pixels32( GLcontext *ctx, GLuint n, - const GLint x[], const GLint y[], - const GLdepth z[], GLubyte mask[] ) +direct_depth_test_pixels32(GLcontext *ctx, GLuint *zStart, GLuint stride, + GLuint n, const GLint x[], const GLint y[], + const GLuint z[], GLubyte mask[] ) { /* switch cases ordered from most frequent to less frequent */ switch (ctx->Depth.Func) { @@ -852,7 +817,7 @@ software_depth_test_pixels32( GLcontext *ctx, GLuint n, GLuint i; for (i=0; i<n; i++) { if (mask[i]) { - GLuint *zptr = Z_ADDRESS32(ctx,x[i],y[i]); + GLuint *zptr = Z_ADDRESS(x[i], y[i]); if (z[i] < *zptr) { /* pass */ *zptr = z[i]; @@ -869,7 +834,7 @@ software_depth_test_pixels32( GLcontext *ctx, GLuint n, GLuint i; for (i=0; i<n; i++) { if (mask[i]) { - GLuint *zptr = Z_ADDRESS32(ctx,x[i],y[i]); + GLuint *zptr = Z_ADDRESS(x[i], y[i]); if (z[i] < *zptr) { /* pass */ } @@ -887,7 +852,7 @@ software_depth_test_pixels32( GLcontext *ctx, GLuint n, GLuint i; for (i=0; i<n; i++) { if (mask[i]) { - GLuint *zptr = Z_ADDRESS32(ctx,x[i],y[i]); + GLuint *zptr = Z_ADDRESS(x[i], y[i]); if (z[i] <= *zptr) { /* pass */ *zptr = z[i]; @@ -904,7 +869,7 @@ software_depth_test_pixels32( GLcontext *ctx, GLuint n, GLuint i; for (i=0; i<n; i++) { if (mask[i]) { - GLuint *zptr = Z_ADDRESS32(ctx,x[i],y[i]); + GLuint *zptr = Z_ADDRESS(x[i], y[i]); if (z[i] <= *zptr) { /* pass */ } @@ -922,7 +887,7 @@ software_depth_test_pixels32( GLcontext *ctx, GLuint n, GLuint i; for (i=0; i<n; i++) { if (mask[i]) { - GLuint *zptr = Z_ADDRESS32(ctx,x[i],y[i]); + GLuint *zptr = Z_ADDRESS(x[i], y[i]); if (z[i] >= *zptr) { /* pass */ *zptr = z[i]; @@ -939,7 +904,7 @@ software_depth_test_pixels32( GLcontext *ctx, GLuint n, GLuint i; for (i=0; i<n; i++) { if (mask[i]) { - GLuint *zptr = Z_ADDRESS32(ctx,x[i],y[i]); + GLuint *zptr = Z_ADDRESS(x[i], y[i]); if (z[i] >= *zptr) { /* pass */ } @@ -957,7 +922,7 @@ software_depth_test_pixels32( GLcontext *ctx, GLuint n, GLuint i; for (i=0; i<n; i++) { if (mask[i]) { - GLuint *zptr = Z_ADDRESS32(ctx,x[i],y[i]); + GLuint *zptr = Z_ADDRESS(x[i], y[i]); if (z[i] > *zptr) { /* pass */ *zptr = z[i]; @@ -974,7 +939,7 @@ software_depth_test_pixels32( GLcontext *ctx, GLuint n, GLuint i; for (i=0; i<n; i++) { if (mask[i]) { - GLuint *zptr = Z_ADDRESS32(ctx,x[i],y[i]); + GLuint *zptr = Z_ADDRESS(x[i], y[i]); if (z[i] > *zptr) { /* pass */ } @@ -992,7 +957,7 @@ software_depth_test_pixels32( GLcontext *ctx, GLuint n, GLuint i; for (i=0; i<n; i++) { if (mask[i]) { - GLuint *zptr = Z_ADDRESS32(ctx,x[i],y[i]); + GLuint *zptr = Z_ADDRESS(x[i], y[i]); if (z[i] != *zptr) { /* pass */ *zptr = z[i]; @@ -1009,7 +974,7 @@ software_depth_test_pixels32( GLcontext *ctx, GLuint n, GLuint i; for (i=0; i<n; i++) { if (mask[i]) { - GLuint *zptr = Z_ADDRESS32(ctx,x[i],y[i]); + GLuint *zptr = Z_ADDRESS(x[i], y[i]); if (z[i] != *zptr) { /* pass */ } @@ -1027,7 +992,7 @@ software_depth_test_pixels32( GLcontext *ctx, GLuint n, GLuint i; for (i=0; i<n; i++) { if (mask[i]) { - GLuint *zptr = Z_ADDRESS32(ctx,x[i],y[i]); + GLuint *zptr = Z_ADDRESS(x[i], y[i]); if (z[i] == *zptr) { /* pass */ *zptr = z[i]; @@ -1044,7 +1009,7 @@ software_depth_test_pixels32( GLcontext *ctx, GLuint n, GLuint i; for (i=0; i<n; i++) { if (mask[i]) { - GLuint *zptr = Z_ADDRESS32(ctx,x[i],y[i]); + GLuint *zptr = Z_ADDRESS(x[i], y[i]); if (z[i] == *zptr) { /* pass */ } @@ -1062,7 +1027,7 @@ software_depth_test_pixels32( GLcontext *ctx, GLuint n, GLuint i; for (i=0; i<n; i++) { if (mask[i]) { - GLuint *zptr = Z_ADDRESS32(ctx,x[i],y[i]); + GLuint *zptr = Z_ADDRESS(x[i], y[i]); *zptr = z[i]; } } @@ -1076,275 +1041,55 @@ software_depth_test_pixels32( GLcontext *ctx, GLuint n, _mesa_bzero(mask, n * sizeof(GLubyte)); break; default: - _mesa_problem(ctx, "Bad depth func in software_depth_test_pixels"); + _mesa_problem(ctx, "Bad depth func in direct_depth_test_pixels"); } } -/* - * Do depth testing for an array of pixels using hardware Z buffer. - * Input/output: zbuffer - array of depth values from Z buffer - * Input: z - array of fragment z values. - */ -static void -hardware_depth_test_pixels( GLcontext *ctx, GLuint n, GLdepth zbuffer[], - const GLdepth z[], GLubyte mask[] ) -{ - /* switch cases ordered from most frequent to less frequent */ - switch (ctx->Depth.Func) { - case GL_LESS: - if (ctx->Depth.Mask) { - /* Update Z buffer */ - GLuint i; - for (i=0; i<n; i++) { - if (mask[i]) { - if (z[i] < zbuffer[i]) { - /* pass */ - zbuffer[i] = z[i]; - } - else { - /* fail */ - mask[i] = 0; - } - } - } - } - else { - /* Don't update Z buffer */ - GLuint i; - for (i=0; i<n; i++) { - if (mask[i]) { - if (z[i] < zbuffer[i]) { - /* pass */ - } - else { - /* fail */ - mask[i] = 0; - } - } - } - } - break; - case GL_LEQUAL: - if (ctx->Depth.Mask) { - /* Update Z buffer */ - GLuint i; - for (i=0; i<n; i++) { - if (mask[i]) { - if (z[i] <= zbuffer[i]) { - /* pass */ - zbuffer[i] = z[i]; - } - else { - /* fail */ - mask[i] = 0; - } - } - } - } - else { - /* Don't update Z buffer */ - GLuint i; - for (i=0; i<n; i++) { - if (mask[i]) { - if (z[i] <= zbuffer[i]) { - /* pass */ - } - else { - /* fail */ - mask[i] = 0; - } - } - } - } - break; - case GL_GEQUAL: - if (ctx->Depth.Mask) { - /* Update Z buffer */ - GLuint i; - for (i=0; i<n; i++) { - if (mask[i]) { - if (z[i] >= zbuffer[i]) { - /* pass */ - zbuffer[i] = z[i]; - } - else { - /* fail */ - mask[i] = 0; - } - } - } - } - else { - /* Don't update Z buffer */ - GLuint i; - for (i=0; i<n; i++) { - if (mask[i]) { - if (z[i] >= zbuffer[i]) { - /* pass */ - } - else { - /* fail */ - mask[i] = 0; - } - } - } - } - break; - case GL_GREATER: - if (ctx->Depth.Mask) { - /* Update Z buffer */ - GLuint i; - for (i=0; i<n; i++) { - if (mask[i]) { - if (z[i] > zbuffer[i]) { - /* pass */ - zbuffer[i] = z[i]; - } - else { - /* fail */ - mask[i] = 0; - } - } - } - } - else { - /* Don't update Z buffer */ - GLuint i; - for (i=0; i<n; i++) { - if (mask[i]) { - if (z[i] > zbuffer[i]) { - /* pass */ - } - else { - /* fail */ - mask[i] = 0; - } - } - } - } - break; - case GL_NOTEQUAL: - if (ctx->Depth.Mask) { - /* Update Z buffer */ - GLuint i; - for (i=0; i<n; i++) { - if (mask[i]) { - if (z[i] != zbuffer[i]) { - /* pass */ - zbuffer[i] = z[i]; - } - else { - /* fail */ - mask[i] = 0; - } - } - } - } - else { - /* Don't update Z buffer */ - GLuint i; - for (i=0; i<n; i++) { - if (mask[i]) { - if (z[i] != zbuffer[i]) { - /* pass */ - } - else { - /* fail */ - mask[i] = 0; - } - } - } - } - break; - case GL_EQUAL: - if (ctx->Depth.Mask) { - /* Update Z buffer */ - GLuint i; - for (i=0; i<n; i++) { - if (mask[i]) { - if (z[i] == zbuffer[i]) { - /* pass */ - zbuffer[i] = z[i]; - } - else { - /* fail */ - mask[i] = 0; - } - } - } - } - else { - /* Don't update Z buffer */ - GLuint i; - for (i=0; i<n; i++) { - if (mask[i]) { - if (z[i] == zbuffer[i]) { - /* pass */ - } - else { - /* fail */ - mask[i] = 0; - } - } - } - } - break; - case GL_ALWAYS: - if (ctx->Depth.Mask) { - /* Update Z buffer */ - GLuint i; - for (i=0; i<n; i++) { - if (mask[i]) { - zbuffer[i] = z[i]; - } - } - } - else { - /* Don't update Z buffer or mask */ - } - break; - case GL_NEVER: - /* depth test never passes */ - _mesa_bzero(mask, n * sizeof(GLubyte)); - break; - default: - _mesa_problem(ctx, "Bad depth func in hardware_depth_test_pixels"); - } -} - - static GLuint depth_test_pixels( GLcontext *ctx, struct sw_span *span ) { - SWcontext *swrast = SWRAST_CONTEXT(ctx); - const GLuint n = span->end; + struct gl_framebuffer *fb = ctx->DrawBuffer; + struct gl_renderbuffer *rb = fb->Attachment[BUFFER_DEPTH].Renderbuffer; + const GLuint count = span->end; const GLint *x = span->array->x; const GLint *y = span->array->y; - const GLdepth *z = span->array->z; + const GLuint *z = span->array->z; GLubyte *mask = span->array->mask; - if (swrast->Driver.ReadDepthPixels) { - /* read depth values from hardware Z buffer */ - GLdepth zbuffer[MAX_WIDTH]; - (*swrast->Driver.ReadDepthPixels)(ctx, n, x, y, zbuffer); - - hardware_depth_test_pixels( ctx, n, zbuffer, z, mask ); - - /* update hardware Z buffer with new values */ - assert(swrast->Driver.WriteDepthPixels); - (*swrast->Driver.WriteDepthPixels)(ctx, n, x, y, zbuffer, mask ); + if (rb->GetPointer(ctx, rb, 0, 0)) { + /* Directly access values */ + if (rb->DataType == GL_UNSIGNED_SHORT) { + GLushort *zStart = (GLushort *) rb->Data; + GLuint stride = rb->Width; + direct_depth_test_pixels16(ctx, zStart, stride, count, x, y, z, mask); + } + else { + GLuint *zStart = (GLuint *) rb->Data; + GLuint stride = rb->Width; + direct_depth_test_pixels32(ctx, zStart, stride, count, x, y, z, mask); + } } else { - /* software depth testing */ - if (ctx->Visual.depthBits <= 16) - software_depth_test_pixels16(ctx, n, x, y, z, mask); - else - software_depth_test_pixels32(ctx, n, x, y, z, mask); + /* read depth values from buffer, test, write back */ + if (rb->DataType == GL_UNSIGNED_SHORT) { + GLushort zbuffer[MAX_WIDTH]; + rb->GetValues(ctx, rb, count, x, y, zbuffer); + depth_test_span16(ctx, count, zbuffer, z, mask ); + rb->PutValues(ctx, rb, count, x, y, zbuffer, NULL); + } + else { + GLuint zbuffer[MAX_WIDTH]; + ASSERT(rb->DataType == GL_UNSIGNED_INT); + rb->GetValues(ctx, rb, count, x, y, zbuffer); + depth_test_span32(ctx, count, zbuffer, z, mask ); + rb->PutValues(ctx, rb, count, x, y, zbuffer, NULL); + } } - return n; /* not really correct, but OK */ + + return count; /* not really correct, but OK */ } @@ -1372,24 +1117,33 @@ _swrast_depth_test_span( GLcontext *ctx, struct sw_span *span) GLboolean _swrast_depth_bounds_test( GLcontext *ctx, struct sw_span *span ) { - SWcontext *swrast = SWRAST_CONTEXT(ctx); - GLdepth zMin = (GLdepth) (ctx->Depth.BoundsMin * ctx->DepthMaxF + 0.5F); - GLdepth zMax = (GLdepth) (ctx->Depth.BoundsMax * ctx->DepthMaxF + 0.5F); + struct gl_framebuffer *fb = ctx->DrawBuffer; + struct gl_renderbuffer *rb = fb->Attachment[BUFFER_DEPTH].Renderbuffer; + GLuint zMin = (GLuint) (ctx->Depth.BoundsMin * fb->_DepthMaxF + 0.5F); + GLuint zMax = (GLuint) (ctx->Depth.BoundsMax * fb->_DepthMaxF + 0.5F); GLubyte *mask = span->array->mask; + const GLuint count = span->end; GLuint i; GLboolean anyPass = GL_FALSE; - if (swrast->Driver.ReadDepthPixels) { - /* read depth values from hardware Z buffer */ - GLdepth zbuffer[MAX_WIDTH]; - ASSERT(span->end <= MAX_WIDTH); - if (span->arrayMask & SPAN_XY) - (*swrast->Driver.ReadDepthPixels)(ctx, span->end, span->array->x, - span->array->y, zbuffer); - else - (*swrast->Driver.ReadDepthSpan)(ctx, span->end, span->x, span->y, - zbuffer); - for (i = 0; i < span->end; i++) { + if (rb->DataType == GL_UNSIGNED_SHORT) { + /* get 16-bit values */ + GLushort zbuffer16[MAX_WIDTH], *zbuffer; + if (span->arrayMask & SPAN_XY) { + rb->GetValues(ctx, rb, count, span->array->x, span->array->y, zbuffer16); + zbuffer = zbuffer16; + } + else { + zbuffer = rb->GetPointer(ctx, rb, span->x, span->y); + if (!zbuffer) { + rb->GetRow(ctx, rb, count, span->x, span->y, zbuffer16); + zbuffer = zbuffer16; + } + } + assert(zbuffer); + + /* Now do the tests */ + for (i = 0; i < count; i++) { if (mask[i]) { if (zbuffer[i] < zMin || zbuffer[i] > zMax) mask[i] = GL_FALSE; @@ -1399,62 +1153,32 @@ _swrast_depth_bounds_test( GLcontext *ctx, struct sw_span *span ) } } else { - /* software Z buffer */ + /* get 32-bit values */ + GLuint zbuffer32[MAX_WIDTH], *zbuffer; if (span->arrayMask & SPAN_XY) { - if (ctx->Visual.depthBits <= 16) { - /* 16 bits / Z */ - for (i = 0; i < span->end; i++) { - if (mask[i]) { - const GLushort *zPtr = Z_ADDRESS16(ctx, span->array->x[i], - span->array->y[i]); - if (*zPtr < zMin || *zPtr > zMax) - mask[i] = GL_FALSE; - else - anyPass = GL_TRUE; - } - } - } - else { - /* 32 bits / Z */ - for (i = 0; i < span->end; i++) { - if (mask[i]) { - const GLuint *zPtr = Z_ADDRESS32(ctx, span->array->x[i], - span->array->y[i]); - if (*zPtr < zMin || *zPtr > zMax) - mask[i] = GL_FALSE; - else - anyPass = GL_TRUE; - } - } - } + rb->GetValues(ctx, rb, count, span->array->x, span->array->y, zbuffer32); + zbuffer = zbuffer32; } else { - if (ctx->Visual.depthBits <= 16) { - /* 16 bits / Z */ - const GLushort *zPtr = Z_ADDRESS16(ctx, span->x, span->y); - for (i = 0; i < span->end; i++) { - if (mask[i]) { - if (zPtr[i] < zMin || zPtr[i] > zMax) - mask[i] = GL_FALSE; - else - anyPass = GL_TRUE; - } - } + zbuffer = rb->GetPointer(ctx, rb, span->x, span->y); + if (!zbuffer) { + rb->GetRow(ctx, rb, count, span->x, span->y, zbuffer32); + zbuffer = zbuffer32; } - else { - /* 32 bits / Z */ - const GLuint *zPtr = Z_ADDRESS32(ctx, span->x, span->y); - for (i = 0; i < span->end; i++) { - if (mask[i]) { - if (zPtr[i] < zMin || zPtr[i] > zMax) - mask[i] = GL_FALSE; - else - anyPass = GL_TRUE; - } - } + } + assert(zbuffer); + + /* Now do the tests */ + for (i = 0; i < count; i++) { + if (mask[i]) { + if (zbuffer[i] < zMin || zbuffer[i] > zMax) + mask[i] = GL_FALSE; + else + anyPass = GL_TRUE; } } } + return anyPass; } @@ -1468,15 +1192,16 @@ _swrast_depth_bounds_test( GLcontext *ctx, struct sw_span *span ) /** * Read a span of depth values from the depth buffer. * This function does clipping before calling the device driver function. + * + * XXXX this is no longer a swrast function!!! + * */ void -_swrast_read_depth_span( GLcontext *ctx, - GLint n, GLint x, GLint y, GLdepth depth[] ) +_swrast_read_depth_span( GLcontext *ctx, struct gl_renderbuffer *rb, + GLint n, GLint x, GLint y, GLuint depth[] ) { - SWcontext *swrast = SWRAST_CONTEXT(ctx); - - if (y < 0 || y >= (GLint) ctx->DrawBuffer->Height || - x + (GLint) n <= 0 || x >= (GLint) ctx->DrawBuffer->Width) { + if (y < 0 || y >= (GLint) rb->Height || + x + (GLint) n <= 0 || x >= (GLint) rb->Width) { /* span is completely outside framebuffer */ GLint i; for (i = 0; i < n; i++) @@ -1493,8 +1218,8 @@ _swrast_read_depth_span( GLcontext *ctx, n -= dx; depth += dx; } - if (x + n > (GLint) ctx->DrawBuffer->Width) { - GLint dx = x + n - (GLint) ctx->DrawBuffer->Width; + if (x + n > (GLint) rb->Width) { + GLint dx = x + n - (GLint) rb->Width; GLint i; for (i = 0; i < dx; i++) depth[n - i - 1] = 0; @@ -1504,292 +1229,127 @@ _swrast_read_depth_span( GLcontext *ctx, return; } - if (ctx->DrawBuffer->DepthBuffer) { - /* read from software depth buffer */ - if (ctx->Visual.depthBits <= 16) { - const GLushort *zptr = Z_ADDRESS16( ctx, x, y ); - GLint i; - for (i = 0; i < n; i++) { - depth[i] = zptr[i]; - } - } - else { - const GLuint *zptr = Z_ADDRESS32( ctx, x, y ); - GLint i; - for (i = 0; i < n; i++) { - depth[i] = zptr[i]; - } - } + /* we'll always return 32-bit values to our caller */ + if (!rb) { + _mesa_bzero(depth, n * sizeof(GLuint)); } - else if (swrast->Driver.ReadDepthSpan) { - /* read from hardware depth buffer */ - (*swrast->Driver.ReadDepthSpan)( ctx, n, x, y, depth ); + else if (rb->DataType == GL_UNSIGNED_INT) { + rb->GetRow(ctx, rb, x, y, n, depth); } else { - /* no depth buffer */ - _mesa_bzero(depth, n * sizeof(GLfloat)); + GLushort temp[MAX_WIDTH]; + GLuint i; + ASSERT(rb->DataType == GL_UNSIGNED_SHORT); + rb->GetRow(ctx, rb, n, x, y, temp); + for (i = 0; i < n; i++) { + depth[i] = temp[i]; + } } - } - - /** * Return a span of depth values from the depth buffer as floats in [0,1]. - * This is used for both hardware and software depth buffers. * Input: n - how many pixels * x,y - location of first pixel * Output: depth - the array of depth values */ void -_swrast_read_depth_span_float( GLcontext *ctx, - GLint n, GLint x, GLint y, GLfloat depth[] ) -{ - SWcontext *swrast = SWRAST_CONTEXT(ctx); - const GLfloat scale = 1.0F / ctx->DepthMaxF; - - if (y < 0 || y >= (GLint) ctx->DrawBuffer->Height || - x + (GLint) n <= 0 || x >= (GLint) ctx->DrawBuffer->Width) { - /* span is completely outside framebuffer */ - GLint i; - for (i = 0; i < n; i++) - depth[i] = 0.0F; - return; - } - - if (x < 0) { - GLint dx = -x; - GLint i; - for (i = 0; i < dx; i++) - depth[i] = 0.0F; - n -= dx; - x = 0; - } - if (x + n > (GLint) ctx->DrawBuffer->Width) { - GLint dx = x + n - (GLint) ctx->DrawBuffer->Width; - GLint i; - for (i = 0; i < dx; i++) - depth[n - i - 1] = 0.0F; - n -= dx; - } - if (n <= 0) { - return; - } - - if (ctx->DrawBuffer->DepthBuffer) { - /* read from software depth buffer */ - if (ctx->Visual.depthBits <= 16) { - const GLushort *zptr = Z_ADDRESS16( ctx, x, y ); - GLint i; - for (i = 0; i < n; i++) { - depth[i] = (GLfloat) zptr[i] * scale; - } - } - else { - const GLuint *zptr = Z_ADDRESS32( ctx, x, y ); - GLint i; - for (i = 0; i < n; i++) { - depth[i] = (GLfloat) zptr[i] * scale; - } - } - } - else if (swrast->Driver.ReadDepthSpan) { - /* read from hardware depth buffer */ - GLdepth d[MAX_WIDTH]; - GLint i; - assert(n <= MAX_WIDTH); - (*swrast->Driver.ReadDepthSpan)( ctx, n, x, y, d ); - for (i = 0; i < n; i++) { - depth[i] = d[i] * scale; - } - } - else { - /* no depth buffer */ - _mesa_bzero(depth, n * sizeof(GLfloat)); - } -} - - - -/**********************************************************************/ -/***** Allocate and Clear Depth Buffer *****/ -/**********************************************************************/ - - - -/** - * Allocate a new depth buffer. If there's already a depth buffer allocated - * it will be free()'d. The new depth buffer will be uninitialized. - */ -void -_swrast_alloc_depth_buffer( GLframebuffer *buffer ) +_swrast_read_depth_span_float( GLcontext *ctx, struct gl_renderbuffer *rb, + GLint n, GLint x, GLint y, GLfloat depth[] ) { - GLint bytesPerValue; - - ASSERT(buffer->UseSoftwareDepthBuffer); + const GLfloat scale = 1.0F / ctx->DrawBuffer->_DepthMaxF; + GLuint temp[MAX_WIDTH]; + GLint i; - /* deallocate current depth buffer if present */ - if (buffer->DepthBuffer) { - MESA_PBUFFER_FREE(buffer->DepthBuffer); - buffer->DepthBuffer = NULL; - } - - /* allocate new depth buffer, but don't initialize it */ - if (buffer->Visual.depthBits <= 16) - bytesPerValue = sizeof(GLushort); - else - bytesPerValue = sizeof(GLuint); + assert(n <= MAX_WIDTH); - buffer->DepthBuffer = MESA_PBUFFER_ALLOC(buffer->Width * buffer->Height - * bytesPerValue); - - if (!buffer->DepthBuffer) { - /* out of memory */ - GET_CURRENT_CONTEXT(ctx); - if (ctx) { - ctx->Depth.Test = GL_FALSE; - ctx->NewState |= _NEW_DEPTH; - _mesa_error(ctx, GL_OUT_OF_MEMORY, "Couldn't allocate depth buffer"); - } + _swrast_read_depth_span(ctx, rb, n, x, y, temp); + for (i = 0; i < n; i++) { + depth[i] = temp[i] * scale; } } /** - * Clear the depth buffer. If the depth buffer doesn't exist yet we'll - * allocate it now. - * This function is only called through Driver.clear_depth_buffer. + * Clear the depth buffer. + * XXX this is no longer a swrast function!!! */ void -_swrast_clear_depth_buffer( GLcontext *ctx ) +_swrast_clear_depth_buffer( GLcontext *ctx, struct gl_renderbuffer *rb ) { - SWcontext *swrast = SWRAST_CONTEXT(ctx); + const GLuint clearValue + = (GLuint) (ctx->Depth.Clear * ctx->DrawBuffer->_DepthMaxF); + GLint x, y, width, height; - if (ctx->Visual.depthBits == 0 - || !ctx->Depth.Mask) { + if (!rb || !ctx->Depth.Mask) { /* no depth buffer, or writing to it is disabled */ return; } - if (swrast->Driver.WriteMonoDepthSpan) { - const GLdepth clearValue = (GLdepth)(ctx->Depth.Clear * ctx->DepthMax); - const GLint x = ctx->DrawBuffer->_Xmin; - const GLint y = ctx->DrawBuffer->_Ymin; - const GLint height = ctx->DrawBuffer->_Ymax - ctx->DrawBuffer->_Ymin; - const GLint width = ctx->DrawBuffer->_Xmax - ctx->DrawBuffer->_Xmin; - GLint i; - - for (i = 0; i < height; i++) { - (*swrast->Driver.WriteMonoDepthSpan)( ctx, width, x, y + i, - clearValue, NULL ); - } - - return; - } - - if (!ctx->DrawBuffer->DepthBuffer) - return; - - /* The loops in this function have been written so the IRIX 5.3 - * C compiler can unroll them. Hopefully other compilers can too! - */ - - if (ctx->Scissor.Enabled) { - /* only clear scissor region */ - if (ctx->Visual.depthBits <= 16) { - const GLushort clearValue = (GLushort) (ctx->Depth.Clear * ctx->DepthMax); - const GLint rows = ctx->DrawBuffer->_Ymax - ctx->DrawBuffer->_Ymin; - const GLint cols = ctx->DrawBuffer->_Xmax - ctx->DrawBuffer->_Xmin; - const GLint rowStride = ctx->DrawBuffer->Width; - GLushort *dRow = (GLushort *) ctx->DrawBuffer->DepthBuffer - + ctx->DrawBuffer->_Ymin * rowStride + ctx->DrawBuffer->_Xmin; - GLint i, j; - for (i = 0; i < rows; i++) { - for (j = 0; j < cols; j++) { - dRow[j] = clearValue; + assert(rb->_BaseFormat == GL_DEPTH_COMPONENT); + + /* compute region to clear */ + x = ctx->DrawBuffer->_Xmin; + y = ctx->DrawBuffer->_Ymin; + width = ctx->DrawBuffer->_Xmax - ctx->DrawBuffer->_Xmin; + height = ctx->DrawBuffer->_Ymax - ctx->DrawBuffer->_Ymin; + + if (rb->GetPointer(ctx, rb, 0, 0)) { + /* Direct buffer access is possible. Either this is just malloc'd + * memory, or perhaps the driver mmap'd the zbuffer memory. + */ + if (rb->DataType == GL_UNSIGNED_SHORT) { + if (width == rb->Width && + (clearValue & 0xff) == ((clearValue >> 8) & 0xff)) { + /* optimized case */ + GLushort *dst = (GLushort *) rb->GetPointer(ctx, rb, x, y); + GLuint len = width * height * sizeof(GLushort); + _mesa_memset(dst, (clearValue & 0xff), len); + } + else { + /* general case */ + GLint i, j; + for (i = 0; i < height; i++) { + GLushort *dst = (GLushort *) rb->GetPointer(ctx, rb, x, y + i); + for (j = 0; j < width; j++) { + dst[j] = clearValue; + } } - dRow += rowStride; } } else { - const GLuint clearValue = (GLuint) (ctx->Depth.Clear * ctx->DepthMax); - const GLint rows = ctx->DrawBuffer->_Ymax - ctx->DrawBuffer->_Ymin; - const GLint cols = ctx->DrawBuffer->_Xmax - ctx->DrawBuffer->_Xmin; - const GLint rowStride = ctx->DrawBuffer->Width; - GLuint *dRow = (GLuint *) ctx->DrawBuffer->DepthBuffer - + ctx->DrawBuffer->_Ymin * rowStride + ctx->DrawBuffer->_Xmin; GLint i, j; - for (i = 0; i < rows; i++) { - for (j = 0; j < cols; j++) { - dRow[j] = clearValue; + ASSERT(rb->DataType == GL_UNSIGNED_INT); + for (i = 0; i < height; i++) { + GLuint *dst = (GLuint *) rb->GetPointer(ctx, rb, x, y + i); + for (j = 0; j < width; j++) { + dst[j] = clearValue; } - dRow += rowStride; } } } else { - /* clear whole buffer */ - if (ctx->Visual.depthBits <= 16) { - const GLushort clearValue = (GLushort) (ctx->Depth.Clear * ctx->DepthMax); - if ((clearValue & 0xff) == (clearValue >> 8)) { - if (clearValue == 0) { - _mesa_bzero(ctx->DrawBuffer->DepthBuffer, - 2*ctx->DrawBuffer->Width*ctx->DrawBuffer->Height); - } - else { - /* lower and upper bytes of clear_value are same, use MEMSET */ - MEMSET( ctx->DrawBuffer->DepthBuffer, clearValue & 0xff, - 2 * ctx->DrawBuffer->Width * ctx->DrawBuffer->Height); - } + /* Direct access not possible. Use PutRow to write new values. */ + if (rb->DataType == GL_UNSIGNED_SHORT) { + GLushort clearRow[MAX_WIDTH]; + GLint i, j; + for (j = 0; j < width; j++) { + clearRow[j] = clearValue; } - else { - GLushort *d = (GLushort *) ctx->DrawBuffer->DepthBuffer; - GLint n = ctx->DrawBuffer->Width * ctx->DrawBuffer->Height; - while (n >= 16) { - d[0] = clearValue; d[1] = clearValue; - d[2] = clearValue; d[3] = clearValue; - d[4] = clearValue; d[5] = clearValue; - d[6] = clearValue; d[7] = clearValue; - d[8] = clearValue; d[9] = clearValue; - d[10] = clearValue; d[11] = clearValue; - d[12] = clearValue; d[13] = clearValue; - d[14] = clearValue; d[15] = clearValue; - d += 16; - n -= 16; - } - while (n > 0) { - *d++ = clearValue; - n--; - } + for (i = 0; i < height; i++) { + rb->PutRow(ctx, rb, width, x, y + i, clearRow, NULL); } } else { - /* >16 bit depth buffer */ - const GLuint clearValue = (GLuint) (ctx->Depth.Clear * ctx->DepthMax); - if (clearValue == 0) { - _mesa_bzero(ctx->DrawBuffer->DepthBuffer, - ctx->DrawBuffer->Width*ctx->DrawBuffer->Height*sizeof(GLuint)); + GLuint clearRow[MAX_WIDTH]; + GLint i, j; + assert(rb->DataType == GL_UNSIGNED_INT); + for (j = 0; j < width; j++) { + clearRow[j] = clearValue; } - else { - GLint n = ctx->DrawBuffer->Width * ctx->DrawBuffer->Height; - GLuint *d = (GLuint *) ctx->DrawBuffer->DepthBuffer; - while (n >= 16) { - d[0] = clearValue; d[1] = clearValue; - d[2] = clearValue; d[3] = clearValue; - d[4] = clearValue; d[5] = clearValue; - d[6] = clearValue; d[7] = clearValue; - d[8] = clearValue; d[9] = clearValue; - d[10] = clearValue; d[11] = clearValue; - d[12] = clearValue; d[13] = clearValue; - d[14] = clearValue; d[15] = clearValue; - d += 16; - n -= 16; - } - while (n > 0) { - *d++ = clearValue; - n--; - } + for (i = 0; i < height; i++) { + rb->PutRow(ctx, rb, width, x, y + i, clearRow, NULL); } } } |