SDL_memcpyMMX(): Make sure srcskip and dstskip are 8-byte aligned.

Thanks to Patrick Baggett for the fix!
libsdl-org · Oct 29, 2011 · 5bc4851e3a8b0a9ac3de1594de6a80aaf052334a · 5bc4851
1 parent dfa2f9b
commit 5bc4851e3a8b0a9ac3de1594de6a80aaf052334a
Unified Split

Showing with 1 addition and 1 deletion.

+1 −1 src/video/SDL_blit_copy.c
diff --git a/src/video/SDL_blit_copy.c b/src/video/SDL_blit_copy.c
@@ -127,7 +127,7 @@ SDL_BlitCopy(SDL_BlitInfo * info)
 #endif
 
 #ifdef __MMX__
-    if (SDL_HasMMX()) {
+    if (SDL_HasMMX() && !(srcskip & 7) && !(dstskip & 7)) {
         while (h--) {
             SDL_memcpyMMX(dst, src, w);
             src += srcskip;