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changeset 2826:cd4a49d5c1ba

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Fixed crash on 64-bit systems
author Sam Lantinga <slouken@libsdl.org>
date Wed, 03 Dec 2008 06:32:04 +0000
parents 620a91b6d263
children aec4399c507a
files src/video/SDL_blit_copy.c
diffstat 1 files changed, 6 insertions(+), 2 deletions(-) [+]
line wrap: on
line diff
--- a/src/video/SDL_blit_copy.c	Wed Dec 03 04:32:24 2008 +0000
+++ b/src/video/SDL_blit_copy.c	Wed Dec 03 06:32:04 2008 +0000
@@ -106,7 +106,9 @@
     dstskip = info->dst_pitch;
 
 #ifdef __SSE__
-    if (SDL_HasSSE() && !((uintptr_t) src & 15) && !((uintptr_t) dst & 15)) {
+    if (SDL_HasSSE() &&
+        !((uintptr_t) src & 15) && !(srcskip & 15) &&
+        !((uintptr_t) dst & 15) && !(dstskip & 15)) {
         while (h--) {
             SDL_memcpySSE(dst, src, w);
             src += srcskip;
@@ -117,7 +119,9 @@
 #endif
 
 #ifdef __MMX__
-    if (SDL_HasMMX() && !((uintptr_t) src & 7) && !((uintptr_t) dst & 7)) {
+    if (SDL_HasMMX() &&
+        !((uintptr_t) src & 7) && !(srcskip & 7) &&
+        !((uintptr_t) dst & 7) && !(dstskip & 7)) {
         while (h--) {
             SDL_memcpyMMX(dst, src, w);
             src += srcskip;