st/dri: fix crash with HUD and single buffering

2013-03-27 01:56:25 +01:00
parent 6b5dfa42c9
commit a19f6e880a
1 changed files with 2 additions and 1 deletions
@@ -435,7 +435,8 @@ dri_flush(__DRIcontext *cPriv,
   }

   /* Flush the drawable. */
-   if (flags & __DRI2_FLUSH_DRAWABLE) {
+   if ((flags & __DRI2_FLUSH_DRAWABLE) &&
+       drawable->textures[ST_ATTACHMENT_BACK_LEFT]) {
      /* Resolve MSAA buffers. */
      if (drawable->stvis.samples > 1) {
         dri_msaa_resolve(ctx, drawable, ST_ATTACHMENT_BACK_LEFT);