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BlitRGBtoRGBPixelAlphaMMX() is putting the wrong value into a register.

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Thanks to Alex Volkov for following up on this.

   Fixes Bugzilla #390.

--HG--
branch : SDL-1.2
extra : convert_revision : svn%3Ac70aab31-4412-0410-b14c-859654838e24/branches/SDL-1.2%402296
This commit is contained in:
Ryan C. Gordon 2007-04-04 09:32:29 +00:00
parent 31327331d9
commit 3a156ea6be
1 changed files with 4 additions and 3 deletions
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7
src/video/SDL_blit_A.c
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@ -369,7 +369,9 @@ static void BlitRGBtoRGBPixelAlphaMMX(SDL_BlitInfo *info)
packsswb_r2r(mm6, mm3); /* 0000FFFF -> mm3 */
pxor_r2r(mm0, mm3); /* 0000F000 -> mm3 (~channel mask) */
/* get alpha channel shift */
movd_m2r(sf->Ashift, mm5); /* Ashift -> mm5 */
__asm__ __volatile__ (
"movd %0, %%mm5"
: : "rm" ((Uint32) sf->Ashift) ); /* Ashift -> mm5 */
while(height--) {
DUFFS_LOOP4({
@ -1566,7 +1568,6 @@ static void 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. */
@ -1588,7 +1589,7 @@ static void BlitRGBtoRGBPixelAlphaMMX3DNOW(SDL_BlitInfo *info)
/* get alpha channel shift */
"movd %1, %%mm5\n\t" /* Ashift -> mm5 */
: /* nothing */ : "m" (amask), "m" (ashift) );
: /* nothing */ : "rm" (amask), "rm" ((Uint32) sf->Ashift) );
while(height--) {