From: José Fonseca <jfonseca@vmware.com>
Date: Fri, 27 Mar 2009 21:43:24 +0000 (+0000)
Subject: wgl: Don't flush surface if it is NULL.
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=aa011836c2778d242c75547c3f64435a055a86ff;p=mesa.git

wgl: Don't flush surface if it is NULL.

Just a quick fix to prevent segfaults with glean.
---

diff --git a/src/gallium/state_trackers/wgl/shared/stw_framebuffer.c b/src/gallium/state_trackers/wgl/shared/stw_framebuffer.c
index 2f0d8cbc318..4641884f950 100644
--- a/src/gallium/state_trackers/wgl/shared/stw_framebuffer.c
+++ b/src/gallium/state_trackers/wgl/shared/stw_framebuffer.c
@@ -225,11 +225,14 @@ stw_swap_buffers(
     */
    st_notify_swapbuffers( fb->stfb );
 
-   st_get_framebuffer_surface( fb->stfb, ST_SURFACE_BACK_LEFT, &surf );
-
-   stw_dev->stw_winsys->flush_frontbuffer(stw_dev->screen,
-                                          surf,
-                                          hdc );
+   if(st_get_framebuffer_surface( fb->stfb, ST_SURFACE_BACK_LEFT, &surf )) {
+      stw_dev->stw_winsys->flush_frontbuffer(stw_dev->screen,
+                                             surf,
+                                             hdc );
+   }
+   else {
+       /* FIXME: this shouldn't happen, but does on glean */
+   }
 
    return TRUE;
 }