Switch between memcpy implementations according to src/dest alignment.mesa_20060201

1 files changed, 10 insertions, 1 deletions

diff --git a/src/mesa/drivers/dri/i915/intel_tex.c b/src/mesa/drivers/dri/i915/intel_tex.c
index fb542ed7b5c..7d52bfc27de 100644
--- a/src/mesa/drivers/dri/i915/intel_tex.c
+++ b/src/mesa/drivers/dri/i915/intel_tex.c
@@ -57,6 +57,15 @@ static void intelFreeTextureImageData( GLcontext *ctx,
    }
 }
 
+static void *do_memcpy( void *dest, const void *src, size_t n )
+{
+   if ( (((unsigned)src) & 63) ||
+	(((unsigned)dest) & 63))
+      return __memcpy(dest, src, n);	
+   else
+      return memcpy(dest, src, n);
+}
+
 
 void intelInitTextureFuncs(struct dd_function_table * functions)
 {
@@ -88,5 +97,5 @@ void intelInitTextureFuncs(struct dd_function_table * functions)
     * 
     * TODO: switch dynamically.
     */
-   functions->TextureMemCpy = __memcpy;	
+   functions->TextureMemCpy = do_memcpy;
 }