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reduced swizzle comment

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Brian Paul 2005-10-29 18:18:46 +00:00
parent 1a979736a6
commit 5b3cf5af74
1 changed files with 4 additions and 0 deletions
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4
src/mesa/tnl/t_vb_arbprogram.h
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@ -112,6 +112,10 @@ union instruction {
GLuint dword;
};
/**
* Reduced swizzle is a 2-bit field; only X/Y/Z/W are allowed, not 0/1.
*/
#define RSW_NOOP ((0<<0) | (1<<2) | (2<<4) | (3<<6))
#define GET_RSW(swz, idx) (((swz) >> ((idx)*2)) & 0x3)