diff options
| author | Brian Paul <[email protected]> | 2011-01-11 15:07:38 -0700 |
|---|---|---|
| committer | Brian Paul <[email protected]> | 2011-01-15 18:35:39 -0700 |
| commit | 74713e2d293f9e796a4053a5a99ee5cb7df5c740 (patch) | |
| tree | 0c3ad404ba3a090e53801f93b1cd0649370cead2 /src/mesa/main/attrib.c | |
| parent | 3dab2b1795e9f9ff3584f612397d118459b12731 (diff) | |
mesa: begin implementation of GL_ARB_draw_buffers_blend
Diffstat (limited to 'src/mesa/main/attrib.c')
| -rw-r--r-- | src/mesa/main/attrib.c | 47 |
1 files changed, 33 insertions, 14 deletions
diff --git a/src/mesa/main/attrib.c b/src/mesa/main/attrib.c index adfec3b0d5a..7fd1287368f 100644 --- a/src/mesa/main/attrib.c +++ b/src/mesa/main/attrib.c @@ -954,20 +954,39 @@ _mesa_PopAttrib(void) _mesa_set_enable(ctx, GL_BLEND, (color->BlendEnabled & 1)); } } - _mesa_BlendFuncSeparateEXT(color->BlendSrcRGB, - color->BlendDstRGB, - color->BlendSrcA, - color->BlendDstA); - /* This special case is because glBlendEquationSeparateEXT - * cannot take GL_LOGIC_OP as a parameter. - */ - if ( color->BlendEquationRGB == color->BlendEquationA ) { - _mesa_BlendEquation(color->BlendEquationRGB); - } - else { - _mesa_BlendEquationSeparateEXT(color->BlendEquationRGB, - color->BlendEquationA); - } + if (ctx->Color._BlendFuncPerBuffer || + ctx->Color._BlendEquationPerBuffer) { + /* set blend per buffer */ + GLuint buf; + for (buf = 0; buf < ctx->Const.MaxDrawBuffers; buf++) { + _mesa_BlendFuncSeparatei(buf, color->Blend[buf].SrcRGB, + color->Blend[buf].DstRGB, + color->Blend[buf].SrcA, + color->Blend[buf].DstA); + _mesa_BlendEquationSeparatei(buf, + color->Blend[buf].EquationRGB, + color->Blend[buf].EquationA); + } + } + else { + /* set same blend modes for all buffers */ + _mesa_BlendFuncSeparateEXT(color->Blend[0].SrcRGB, + color->Blend[0].DstRGB, + color->Blend[0].SrcA, + color->Blend[0].DstA); + /* This special case is because glBlendEquationSeparateEXT + * cannot take GL_LOGIC_OP as a parameter. + */ + if (color->Blend[0].EquationRGB == + color->Blend[0].EquationA) { + _mesa_BlendEquation(color->Blend[0].EquationRGB); + } + else { + _mesa_BlendEquationSeparateEXT( + color->Blend[0].EquationRGB, + color->Blend[0].EquationA); + } + } _mesa_BlendColor(color->BlendColor[0], color->BlendColor[1], color->BlendColor[2], |