mesa: Fix bug in _mesa_swizzle_ubyte_image

diff --git a/src/mesa/main/texstore.c b/src/mesa/main/texstore.c
index d7bfb69..519a73b 100644 (file)
--- a/src/mesa/main/texstore.c
+++ b/src/mesa/main/texstore.c
@@ -823,7 +823,8 @@ _mesa_swizzle_ubyte_image(GLcontext *ctx,
 
 /*    _mesa_printf("map %d %d %d %d\n", map[0], map[1], map[2], map[3]);  */
 
-   if (srcRowStride == dstRowStride &&
+   if (srcComponents == dstComponents &&
+       srcRowStride == dstRowStride &&
        srcRowStride == srcWidth * srcComponents &&
        dimensions < 3) {
       /* 1 and 2D images only */