Mercurial > sdl-ios-xcode
changeset 3631:76667e288846
Revert r5463: Alpha blend "correctness" patch.
Sam says:
"We should revert this. I applied it in 1.3 and then fixed it for correctness."
| author | Ryan C. Gordon <icculus@icculus.org> |
|---|---|
| date | Sun, 10 Jan 2010 08:59:25 +0000 |
| parents | efb79807afe1 |
| children | da2a23b56493 |
| files | src/video/SDL_blit.h |
| diffstat | 1 files changed, 3 insertions(+), 3 deletions(-) [+] |
line wrap: on
line diff
--- a/src/video/SDL_blit.h Sun Jan 10 08:21:19 2010 +0000 +++ b/src/video/SDL_blit.h Sun Jan 10 08:59:25 2010 +0000 @@ -444,9 +444,9 @@ /* 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)