From fd5511d27fc44096117c47ab503fb5b47f993061 Mon Sep 17 00:00:00 2001 From: Brian Paul Date: Tue, 29 Dec 2009 16:17:14 -0700 Subject: mesa: implement per-buffer color masking This is part of the GL_EXT_draw_buffers2 extension and part of GL 3.0. The ctx->Color.ColorMask field is now a 2-D array. Until drivers are modified to support per-buffer color masking, they can just look at the 0th color mask. The new _mesa_ColorMaskIndexed() function will be called by glColorMaskIndexedEXT() or glColorMaski(). --- src/mesa/swrast/s_accum.c | 2 +- src/mesa/swrast/s_clear.c | 50 ++++++++++++++------------------------------ src/mesa/swrast/s_context.c | 28 ++++++++++++++++++++----- src/mesa/swrast/s_masking.c | 20 +++++++++--------- src/mesa/swrast/s_masking.h | 2 +- src/mesa/swrast/s_span.c | 8 +++---- src/mesa/swrast/s_triangle.c | 8 +++---- 7 files changed, 59 insertions(+), 59 deletions(-) (limited to 'src/mesa/swrast') diff --git a/src/mesa/swrast/s_accum.c b/src/mesa/swrast/s_accum.c index c6c7dbf5cf..2d8c361e5d 100644 --- a/src/mesa/swrast/s_accum.c +++ b/src/mesa/swrast/s_accum.c @@ -528,7 +528,7 @@ accum_return(GLcontext *ctx, GLfloat value, for (buffer = 0; buffer < fb->_NumColorDrawBuffers; buffer++) { struct gl_renderbuffer *rb = fb->_ColorDrawBuffers[buffer]; if (masking) { - _swrast_mask_rgba_span(ctx, rb, &span); + _swrast_mask_rgba_span(ctx, rb, &span, buffer); } rb->PutRow(ctx, rb, width, xpos, ypos + i, span.array->rgba, NULL); } diff --git a/src/mesa/swrast/s_clear.c b/src/mesa/swrast/s_clear.c index 002718ded8..2d27797d43 100644 --- a/src/mesa/swrast/s_clear.c +++ b/src/mesa/swrast/s_clear.c @@ -40,7 +40,8 @@ * Clear the color buffer when glColorMask is in effect. */ static void -clear_rgba_buffer_with_masking(GLcontext *ctx, struct gl_renderbuffer *rb) +clear_rgba_buffer_with_masking(GLcontext *ctx, struct gl_renderbuffer *rb, + GLuint buf) { const GLint x = ctx->DrawBuffer->_Xmin; const GLint y = ctx->DrawBuffer->_Ymin; @@ -95,7 +96,7 @@ clear_rgba_buffer_with_masking(GLcontext *ctx, struct gl_renderbuffer *rb) for (i = 0; i < height; i++) { span.x = x; span.y = y + i; - _swrast_mask_rgba_span(ctx, rb, &span); + _swrast_mask_rgba_span(ctx, rb, &span, buf); /* write masked row */ rb->PutRow(ctx, rb, width, x, y + i, span.array->rgba, NULL); } @@ -145,7 +146,7 @@ clear_ci_buffer_with_masking(GLcontext *ctx, struct gl_renderbuffer *rb) * Clear an rgba color buffer without channel masking. */ static void -clear_rgba_buffer(GLcontext *ctx, struct gl_renderbuffer *rb) +clear_rgba_buffer(GLcontext *ctx, struct gl_renderbuffer *rb, GLuint buf) { const GLint x = ctx->DrawBuffer->_Xmin; const GLint y = ctx->DrawBuffer->_Ymin; @@ -158,10 +159,10 @@ clear_rgba_buffer(GLcontext *ctx, struct gl_renderbuffer *rb) ASSERT(ctx->Visual.rgbMode); - ASSERT(ctx->Color.ColorMask[0] && - ctx->Color.ColorMask[1] && - ctx->Color.ColorMask[2] && - ctx->Color.ColorMask[3]); + ASSERT(ctx->Color.ColorMask[buf][0] && + ctx->Color.ColorMask[buf][1] && + ctx->Color.ColorMask[buf][2] && + ctx->Color.ColorMask[buf][3]); ASSERT(rb->PutMonoRow); @@ -246,43 +247,24 @@ clear_ci_buffer(GLcontext *ctx, struct gl_renderbuffer *rb) static void clear_color_buffers(GLcontext *ctx) { - GLboolean masking; GLuint buf; - if (ctx->Visual.rgbMode) { - if (ctx->Color.ColorMask[0] && - ctx->Color.ColorMask[1] && - ctx->Color.ColorMask[2] && - ctx->Color.ColorMask[3]) { - masking = GL_FALSE; - } - else { - masking = GL_TRUE; - } - } - else { - struct gl_renderbuffer *rb = ctx->DrawBuffer->_ColorDrawBuffers[0]; - const GLuint indexMask = (1 << _mesa_get_format_bits(rb->Format, GL_INDEX_BITS)) - 1; - if ((ctx->Color.IndexMask & indexMask) == indexMask) { - masking = GL_FALSE; - } - else { - masking = GL_TRUE; - } - } - for (buf = 0; buf < ctx->DrawBuffer->_NumColorDrawBuffers; buf++) { struct gl_renderbuffer *rb = ctx->DrawBuffer->_ColorDrawBuffers[buf]; if (ctx->Visual.rgbMode) { - if (masking) { - clear_rgba_buffer_with_masking(ctx, rb); + if (ctx->Color.ColorMask[buf][0] == 0 || + ctx->Color.ColorMask[buf][1] == 0 || + ctx->Color.ColorMask[buf][2] == 0 || + ctx->Color.ColorMask[buf][3] == 0) { + clear_rgba_buffer_with_masking(ctx, rb, buf); } else { - clear_rgba_buffer(ctx, rb); + clear_rgba_buffer(ctx, rb, buf); } } else { - if (masking) { + const GLuint indexMask = (1 << _mesa_get_format_bits(rb->Format, GL_INDEX_BITS)) - 1; + if ((ctx->Color.IndexMask & indexMask) != indexMask) { clear_ci_buffer_with_masking(ctx, rb); } else { diff --git a/src/mesa/swrast/s_context.c b/src/mesa/swrast/s_context.c index abf0008565..f9092c215a 100644 --- a/src/mesa/swrast/s_context.c +++ b/src/mesa/swrast/s_context.c @@ -55,6 +55,7 @@ _swrast_update_rasterflags( GLcontext *ctx ) { SWcontext *swrast = SWRAST_CONTEXT(ctx); GLbitfield rasterMask = 0; + GLuint i; if (ctx->Color.AlphaEnabled) rasterMask |= ALPHATEST_BIT; if (ctx->Color.BlendEnabled) rasterMask |= BLEND_BIT; @@ -63,8 +64,15 @@ _swrast_update_rasterflags( GLcontext *ctx ) if (ctx->Scissor.Enabled) rasterMask |= CLIP_BIT; if (ctx->Stencil._Enabled) rasterMask |= STENCIL_BIT; if (ctx->Visual.rgbMode) { - const GLuint colorMask = *((GLuint *) &ctx->Color.ColorMask); - if (colorMask != 0xffffffff) rasterMask |= MASKING_BIT; + for (i = 0; i < ctx->Const.MaxDrawBuffers; i++) { + if (!ctx->Color.ColorMask[i][0] || + !ctx->Color.ColorMask[i][1] || + !ctx->Color.ColorMask[i][2] || + !ctx->Color.ColorMask[i][3]) { + rasterMask |= MASKING_BIT; + break; + } + } if (ctx->Color._LogicOpEnabled) rasterMask |= LOGIC_OP_BIT; if (ctx->Texture._EnabledUnits) rasterMask |= TEXTURE_BIT; } @@ -92,13 +100,23 @@ _swrast_update_rasterflags( GLcontext *ctx ) /* more than one color buffer designated for writing (or zero buffers) */ rasterMask |= MULTI_DRAW_BIT; } - else if (ctx->Visual.rgbMode && *((GLuint *) ctx->Color.ColorMask) == 0) { - rasterMask |= MULTI_DRAW_BIT; /* all RGBA channels disabled */ - } else if (!ctx->Visual.rgbMode && ctx->Color.IndexMask==0) { rasterMask |= MULTI_DRAW_BIT; /* all color index bits disabled */ } + if (ctx->Visual.rgbMode) { + for (i = 0; i < ctx->Const.MaxDrawBuffers; i++) { + if (ctx->Color.ColorMask[i][0] + + ctx->Color.ColorMask[i][1] + + ctx->Color.ColorMask[i][2] + + ctx->Color.ColorMask[i][3] == 0) { + rasterMask |= MULTI_DRAW_BIT; /* all RGBA channels disabled */ + break; + } + } + } + + if (ctx->FragmentProgram._Current) { rasterMask |= FRAGPROG_BIT; } diff --git a/src/mesa/swrast/s_masking.c b/src/mesa/swrast/s_masking.c index df779b0739..69c2feb6da 100644 --- a/src/mesa/swrast/s_masking.c +++ b/src/mesa/swrast/s_masking.c @@ -41,7 +41,7 @@ */ void _swrast_mask_rgba_span(GLcontext *ctx, struct gl_renderbuffer *rb, - SWspan *span) + SWspan *span, GLuint buf) { const GLuint n = span->end; void *rbPixels; @@ -58,7 +58,7 @@ _swrast_mask_rgba_span(GLcontext *ctx, struct gl_renderbuffer *rb, */ if (span->array->ChanType == GL_UNSIGNED_BYTE) { /* treat 4xGLubyte as 1xGLuint */ - const GLuint srcMask = *((GLuint *) ctx->Color.ColorMask); + const GLuint srcMask = *((GLuint *) ctx->Color.ColorMask[buf]); const GLuint dstMask = ~srcMask; const GLuint *dst = (const GLuint *) rbPixels; GLuint *src = (GLuint *) span->array->rgba8; @@ -70,10 +70,10 @@ _swrast_mask_rgba_span(GLcontext *ctx, struct gl_renderbuffer *rb, else if (span->array->ChanType == GL_UNSIGNED_SHORT) { /* 2-byte components */ /* XXX try to use 64-bit arithmetic someday */ - const GLushort rMask = ctx->Color.ColorMask[RCOMP] ? 0xffff : 0x0; - const GLushort gMask = ctx->Color.ColorMask[GCOMP] ? 0xffff : 0x0; - const GLushort bMask = ctx->Color.ColorMask[BCOMP] ? 0xffff : 0x0; - const GLushort aMask = ctx->Color.ColorMask[ACOMP] ? 0xffff : 0x0; + const GLushort rMask = ctx->Color.ColorMask[buf][RCOMP] ? 0xffff : 0x0; + const GLushort gMask = ctx->Color.ColorMask[buf][GCOMP] ? 0xffff : 0x0; + const GLushort bMask = ctx->Color.ColorMask[buf][BCOMP] ? 0xffff : 0x0; + const GLushort aMask = ctx->Color.ColorMask[buf][ACOMP] ? 0xffff : 0x0; const GLushort (*dst)[4] = (const GLushort (*)[4]) rbPixels; GLushort (*src)[4] = span->array->rgba16; GLuint i; @@ -86,10 +86,10 @@ _swrast_mask_rgba_span(GLcontext *ctx, struct gl_renderbuffer *rb, } else { /* 4-byte components */ - const GLuint rMask = ctx->Color.ColorMask[RCOMP] ? ~0x0 : 0x0; - const GLuint gMask = ctx->Color.ColorMask[GCOMP] ? ~0x0 : 0x0; - const GLuint bMask = ctx->Color.ColorMask[BCOMP] ? ~0x0 : 0x0; - const GLuint aMask = ctx->Color.ColorMask[ACOMP] ? ~0x0 : 0x0; + const GLuint rMask = ctx->Color.ColorMask[buf][RCOMP] ? ~0x0 : 0x0; + const GLuint gMask = ctx->Color.ColorMask[buf][GCOMP] ? ~0x0 : 0x0; + const GLuint bMask = ctx->Color.ColorMask[buf][BCOMP] ? ~0x0 : 0x0; + const GLuint aMask = ctx->Color.ColorMask[buf][ACOMP] ? ~0x0 : 0x0; const GLuint (*dst)[4] = (const GLuint (*)[4]) rbPixels; GLuint (*src)[4] = (GLuint (*)[4]) span->array->attribs[FRAG_ATTRIB_COL0]; GLuint i; diff --git a/src/mesa/swrast/s_masking.h b/src/mesa/swrast/s_masking.h index 3260ca34e3..fed47f8cfb 100644 --- a/src/mesa/swrast/s_masking.h +++ b/src/mesa/swrast/s_masking.h @@ -32,7 +32,7 @@ extern void _swrast_mask_rgba_span(GLcontext *ctx, struct gl_renderbuffer *rb, - SWspan *span); + SWspan *span, GLuint buf); extern void diff --git a/src/mesa/swrast/s_span.c b/src/mesa/swrast/s_span.c index 00de13d495..a311d4b4bd 100644 --- a/src/mesa/swrast/s_span.c +++ b/src/mesa/swrast/s_span.c @@ -1278,7 +1278,7 @@ void _swrast_write_rgba_span( GLcontext *ctx, SWspan *span) { const SWcontext *swrast = SWRAST_CONTEXT(ctx); - const GLuint colorMask = *((GLuint *) ctx->Color.ColorMask); + const GLuint *colorMask = (GLuint *) ctx->Color.ColorMask; const GLbitfield origInterpMask = span->interpMask; const GLbitfield origArrayMask = span->arrayMask; const GLbitfield origArrayAttribs = span->arrayAttribs; @@ -1389,7 +1389,7 @@ _swrast_write_rgba_span( GLcontext *ctx, SWspan *span) /* We had to wait until now to check for glColorMask(0,0,0,0) because of * the occlusion test. */ - if (colorMask == 0x0) { + if (fb->_NumColorDrawBuffers == 1 && colorMask[0] == 0x0) { /* no colors to write */ goto end; } @@ -1483,8 +1483,8 @@ _swrast_write_rgba_span( GLcontext *ctx, SWspan *span) _swrast_blend_span(ctx, rb, span); } - if (colorMask != 0xffffffff) { - _swrast_mask_rgba_span(ctx, rb, span); + if (colorMask[buf] != 0xffffffff) { + _swrast_mask_rgba_span(ctx, rb, span, buf); } if (span->arrayMask & SPAN_XY) { diff --git a/src/mesa/swrast/s_triangle.c b/src/mesa/swrast/s_triangle.c index 5bec606696..11184b72ce 100644 --- a/src/mesa/swrast/s_triangle.c +++ b/src/mesa/swrast/s_triangle.c @@ -1030,10 +1030,10 @@ _swrast_choose_triangle( GLcontext *ctx ) ctx->Depth.Func == GL_LESS && !ctx->Stencil._Enabled) { if ((rgbmode && - ctx->Color.ColorMask[0] == 0 && - ctx->Color.ColorMask[1] == 0 && - ctx->Color.ColorMask[2] == 0 && - ctx->Color.ColorMask[3] == 0) + ctx->Color.ColorMask[0][0] == 0 && + ctx->Color.ColorMask[0][1] == 0 && + ctx->Color.ColorMask[0][2] == 0 && + ctx->Color.ColorMask[0][3] == 0) || (!rgbmode && ctx->Color.IndexMask == 0)) { USE(occlusion_zless_triangle); -- cgit v1.2.3