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From: Carl Worth <cworth@cworth.org>
Don't copy unused bits to an alpha channel
This bug was identified by cairo's rgb24-ignore-alpha test which
blends RGB24 over ARGB32 and notices that "alpha" values are
making it from the source to the destination.
Index: a/pixman/pixman-pict.c
===================================================================
--- a/pixman/pixman-pict.c b8b7b767b3ed1fc57ba177c38187e1eb3daf4de8
+++ b/pixman/pixman-pict.c c7d73fc532c2da313041906ac0f48dba1b10d3bc
@@ -1778,7 +1778,6 @@ pixman_image_composite (pixman_op_t
break;
case PIXMAN_x8r8g8b8:
switch (pDst->bits.format) {
- case PIXMAN_a8r8g8b8:
case PIXMAN_x8r8g8b8:
#ifdef USE_MMX
if (pixman_have_mmx())
@@ -1790,7 +1789,6 @@ pixman_image_composite (pixman_op_t
}
case PIXMAN_x8b8g8r8:
switch (pDst->bits.format) {
- case PIXMAN_a8b8g8r8:
case PIXMAN_x8b8g8r8:
#ifdef USE_MMX
if (pixman_have_mmx())
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