Return immediately if the operator is CONJOINT_DST or DISJOINT_DST

These are noops just like plain DST is.

diff --git a/pixman/pixman.c b/pixman/pixman.c
index 4c393c5..fed99ee 100644 (file)
--- a/pixman/pixman.c
+++ b/pixman/pixman.c
@@ -123,7 +123,7 @@ pixman_image_composite (pixman_op_t      op,
      * The output operator should be mathematically equivalent to the source.
      */
     op = pixman_optimize_operator(op, src, mask, dest);
-    if(op == PIXMAN_OP_DST)
+    if(op == PIXMAN_OP_DST || op == PIXMAN_OP_CONJOINT_DST || op == PIXMAN_OP_DISJOINT_DST)
         return;
 
     if (!imp)