Add comments explaining a couple "mystery" bits.
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@ -290,6 +290,14 @@ typedef union
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struct
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struct
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{
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{
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unsigned dstAlphaMode : 3;
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unsigned dstAlphaMode : 3;
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/**
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* This bit enables \c GL_FUNC_SUBTRACT. Like most DirectX oriented
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* hardware, there's no way to do \c GL_FUNC_REVERSE_SUBTRACT.
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*
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* \todo
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* Add support for \c GL_FUNC_SUBTRACT!
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*/
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unsigned dstMinusSrc : 1;
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unsigned dstMinusSrc : 1;
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unsigned srcAlphaMode : 3;
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unsigned srcAlphaMode : 3;
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unsigned binaryFinalAlpha : 1;
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unsigned binaryFinalAlpha : 1;
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@ -327,7 +335,11 @@ typedef union
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unsigned texBlendCtrl : 3;
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unsigned texBlendCtrl : 3;
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unsigned flushPdDestWrites : 1;
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unsigned flushPdDestWrites : 1;
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unsigned flushPdZbufWrites : 1;
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unsigned flushPdZbufWrites : 1;
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/* havn't found an equivalent for Savage4. Utah-driver sets it to 0. */
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/**
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* Disable perspective correct interpolation for vertex color, vertex
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* fog, and vertex alpha. For OpenGL, this should \b always be zero.
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*/
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unsigned interpMode : 1;
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unsigned interpMode : 1;
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}ni;
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}ni;
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u_int32_t ui;
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u_int32_t ui;
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