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alpha blending corrected (?)

This commit is contained in:
damdoum 2007-01-07 11:46:34 +00:00
parent 4a84175459
commit 225c332ba3
1 changed files with 3 additions and 3 deletions
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6
desmume/src/GPU.c
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@ -579,9 +579,9 @@ INLINE void renderline_setFinalColor(GPU *gpu,u32 passing,u8 bgnum,u8 *dst,u16 c
u16 sourceG = (((color>>5) & 0x1F) * sourceFraction) >> 4 ;
u16 sourceB = (((color>>10) & 0x1F) * sourceFraction) >> 4 ;
color = T2ReadWord(dst, passing) ;
u16 targetR = ((color & 0x1F) * sourceFraction) >> 4 ;
u16 targetG = (((color>>5) & 0x1F) * sourceFraction) >> 4 ;
u16 targetB = (((color>>10) & 0x1F) * sourceFraction) >> 4 ;
u16 targetR = ((color & 0x1F) * targetFraction) >> 4 ;
u16 targetG = (((color>>5) & 0x1F) * targetFraction) >> 4 ;
u16 targetB = (((color>>10) & 0x1F) * targetFraction) >> 4 ;
targetR = min(0x1F,targetR+sourceR) ;
targetG = min(0x1F,targetG+sourceG) ;
targetB = min(0x1F,targetB+sourceB) ;