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Merged r2913:2914 from SDL-1.2 branch into trunk: alpha blit GCC MMX …

…asm fix.
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icculus committed Nov 21, 2006
1 parent 71852ef commit 09141e504ce429c6b5827fc4584b15343516caff
Showing with 2 additions and 1 deletion.
  1. +2 −1 src/video/SDL_blit_A.c
@@ -1632,6 +1632,7 @@ BlitRGBtoRGBPixelAlphaMMX3DNOW(SDL_BlitInfo * info)
int dstskip = info->d_skip >> 2;
SDL_PixelFormat *sf = info->src;
Uint32 amask = sf->Amask;
Uint32 ashift = sf->Ashift;

__asm__(
/* make mm6 all zeros. */
@@ -1649,7 +1650,7 @@ BlitRGBtoRGBPixelAlphaMMX3DNOW(SDL_BlitInfo * info)
"pxor %%mm4, %%mm3\n\t" /* 0000F000 -> mm3 (~channel mask) */
/* get alpha channel shift */
"movd %1, %%mm5\n\t" /* Ashift -> mm5 */
: /* nothing */ : "m"(sf->Amask), "m"(sf->Ashift));
: /* nothing */ : "m"(amask), "m"(ashift));

while (height--) {

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