[Bf-blender-cvs] SVN commit: /data/svn/bf-blender [48683] branches/soc-2011-tomato/intern/ cycles/blender/blender_session.cpp: fix for crash when render result is NULL

[Campbell Barton]

Revision: 48683
          http://projects.blender.org/scm/viewvc.php?view=rev&root=bf-blender&revision=48683
Author:   campbellbarton
Date:     2012-07-06 14:26:22 +0000 (Fri, 06 Jul 2012)
Log Message:
-----------
fix for crash when render result is NULL

Modified Paths:
--------------
    branches/soc-2011-tomato/intern/cycles/blender/blender_session.cpp

Modified: branches/soc-2011-tomato/intern/cycles/blender/blender_session.cpp
===================================================================
--- branches/soc-2011-tomato/intern/cycles/blender/blender_session.cpp	2012-07-06 14:25:49 UTC (rev 48682)
+++ branches/soc-2011-tomato/intern/cycles/blender/blender_session.cpp	2012-07-06 14:26:22 UTC (rev 48683)
@@ -199,6 +199,12 @@
 
 	/* get render result */
 	BL::RenderResult b_rr = begin_render_result(b_engine, x, y, w, h, b_rlay_name.c_str());
+
+	/* can happen if the intersected rectangle gives 0 width or height */
+	if (b_rr.ptr.data == NULL) {
+		return;
+	}
+
 	BL::RenderResult::layers_iterator b_single_rlay;
 	b_rr.layers.begin(b_single_rlay);
 	BL::RenderLayer b_rlay = *b_single_rlay;