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| author | marha <marha@users.sourceforge.net> | 2012-05-25 15:19:41 +0200 |
|---|---|---|
| committer | marha <marha@users.sourceforge.net> | 2012-05-25 15:19:41 +0200 |
| commit | eef864d36de97903007f04fad9fa43afe297745b (patch) | |
| tree | 28dd3cae5f699b493e4d72e7e7d468a5a2cae7f4 /mesalib/src/mesa/main/blend.c | |
| parent | f543ceaca6820260f15a4eff86938214cf43c7d2 (diff) | |
| download | vcxsrv-eef864d36de97903007f04fad9fa43afe297745b.tar.gz vcxsrv-eef864d36de97903007f04fad9fa43afe297745b.tar.bz2 vcxsrv-eef864d36de97903007f04fad9fa43afe297745b.zip | |
fontconfig xserver xkeyboard-config pixman git update 2012
Diffstat (limited to 'mesalib/src/mesa/main/blend.c')
| -rw-r--r-- | mesalib/src/mesa/main/blend.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/mesalib/src/mesa/main/blend.c b/mesalib/src/mesa/main/blend.c index bc446edca..5bc40a028 100644 --- a/mesalib/src/mesa/main/blend.c +++ b/mesalib/src/mesa/main/blend.c @@ -166,6 +166,24 @@ _mesa_BlendFunc( GLenum sfactor, GLenum dfactor ) _mesa_BlendFuncSeparateEXT(sfactor, dfactor, sfactor, dfactor); } +static GLboolean +blend_factor_is_dual_src(GLenum factor) +{ + return (factor == GL_SRC1_COLOR || + factor == GL_SRC1_ALPHA || + factor == GL_ONE_MINUS_SRC1_COLOR || + factor == GL_ONE_MINUS_SRC1_ALPHA); +} + +static void +update_uses_dual_src(struct gl_context *ctx, int buf) +{ + ctx->Color.Blend[buf]._UsesDualSrc = + (blend_factor_is_dual_src(ctx->Color.Blend[buf].SrcRGB) || + blend_factor_is_dual_src(ctx->Color.Blend[buf].DstRGB) || + blend_factor_is_dual_src(ctx->Color.Blend[buf].SrcA) || + blend_factor_is_dual_src(ctx->Color.Blend[buf].DstA)); +} /** * Set the separate blend source/dest factors for all draw buffers. @@ -220,6 +238,7 @@ _mesa_BlendFuncSeparateEXT( GLenum sfactorRGB, GLenum dfactorRGB, ctx->Color.Blend[buf].DstRGB = dfactorRGB; ctx->Color.Blend[buf].SrcA = sfactorA; ctx->Color.Blend[buf].DstA = dfactorA; + update_uses_dual_src(ctx, buf); } ctx->Color._BlendFuncPerBuffer = GL_FALSE; @@ -282,6 +301,7 @@ _mesa_BlendFuncSeparatei(GLuint buf, GLenum sfactorRGB, GLenum dfactorRGB, ctx->Color.Blend[buf].DstRGB = dfactorRGB; ctx->Color.Blend[buf].SrcA = sfactorA; ctx->Color.Blend[buf].DstA = dfactorA; + update_uses_dual_src(ctx, buf); ctx->Color._BlendFuncPerBuffer = GL_TRUE; if (ctx->Driver.BlendFuncSeparatei) { |