From 7eb2bafe22dcc90c2fb94d2d9cae370b683dba7c Mon Sep 17 00:00:00 2001
From: Eric Anholt <eric@anholt.net>
Date: Fri, 10 Jan 2014 15:54:25 +0800
Subject: [PATCH] glamor: Fix ignoring the ALU during SetSpans().

Signed-off-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Markus Wick <markus@selfnet.de>
---
 glamor/glamor_setspans.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/glamor/glamor_setspans.c b/glamor/glamor_setspans.c
index ced302a50..a51e4c5be 100644
--- a/glamor/glamor_setspans.c
+++ b/glamor/glamor_setspans.c
@@ -48,7 +48,11 @@ _glamor_set_spans(DrawablePtr drawable, GCPtr gc, char *src,
         goto fail;
     }
 
-    /* XXX Shall we set alu here? */
+    if (gc->alu != GXcopy) {
+        glamor_fallback("SetSpans with non-copy ALU.\n");
+        goto fail;
+    }
+
     if (!glamor_set_planemask(dest_pixmap, gc->planemask))
         goto fail;