pandory500/SDL-mirror
2
0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

Revert r5463: Alpha blend "correctness" patch.

Browse source 
Sam says:
"We should revert this. I applied it in 1.3 and then fixed it for correctness."

--HG--
extra : convert_revision : svn%3Ac70aab31-4412-0410-b14c-859654838e24/trunk%404382
This commit is contained in:
Ryan C. Gordon 2010-01-10 08:59:25 +00:00
parent 33bfbef988
commit d619ac0f8d
1 changed files with 3 additions and 3 deletions
Download patch file Download diff file Expand all files Collapse all files

6
src/video/SDL_blit.h
View file

@ -444,9 +444,9 @@ do { \
/* Blend the RGB values of two Pixels based on a source alpha value */
#define ALPHA_BLEND(sR, sG, sB, A, dR, dG, dB) \
do { \
dR = (((((int)(sR-dR)*((int)A))+255)/255)+dR); \
dG = (((((int)(sG-dG)*((int)A))+255)/255)+dG); \
dB = (((((int)(sB-dB)*((int)A))+255)/255)+dB); \
dR = ((((int)(sR-dR)*(int)A)/255)+dR); \
dG = ((((int)(sG-dG)*(int)A)/255)+dG); \
dB = ((((int)(sB-dB)*(int)A)/255)+dB); \
} while(0)