From: Brian Paul <brianp@vmware.com>
Date: Mon, 6 Jul 2015 20:53:06 +0000 (-0600)
Subject: st/wgl: add null pointer check for HUD texture
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=28f6faca518843b1ee30644a7bfb7aadd6551df1;p=mesa.git

st/wgl: add null pointer check for HUD texture

Fixes crash when using HUD with Nobel Clinician Viewer.

Reviewed-by: Jose Fonseca <jfonseca@vmware.com>
---

diff --git a/src/gallium/state_trackers/wgl/stw_framebuffer.c b/src/gallium/state_trackers/wgl/stw_framebuffer.c
index fbe77b23d9c..11f60b6c763 100644
--- a/src/gallium/state_trackers/wgl/stw_framebuffer.c
+++ b/src/gallium/state_trackers/wgl/stw_framebuffer.c
@@ -611,7 +611,9 @@ DrvSwapBuffers(HDC hdc)
          /* Display the HUD */
          struct pipe_resource *back =
             stw_get_framebuffer_resource(fb->stfb, ST_ATTACHMENT_BACK_LEFT);
-         hud_draw(ctx->hud, back);
+         if (back) {
+            hud_draw(ctx->hud, back);
+         }
       }
 
       if (ctx->current_framebuffer == fb) {