[Bf-blender-cvs] SVN commit: /data/svn/bf-blender [38890] trunk/blender/source/blender/ blenkernel/intern/DerivedMesh.c: fix [#28112] Vertex paint crash

[Campbell Barton]

Revision: 38890
          http://projects.blender.org/scm/viewvc.php?view=rev&root=bf-blender&revision=38890
Author:   campbellbarton
Date:     2011-08-01 06:50:24 +0000 (Mon, 01 Aug 2011)
Log Message:
-----------
fix [#28112] Vertex paint crash

Modified Paths:
--------------
    trunk/blender/source/blender/blenkernel/intern/DerivedMesh.c

Modified: trunk/blender/source/blender/blenkernel/intern/DerivedMesh.c
===================================================================
--- trunk/blender/source/blender/blenkernel/intern/DerivedMesh.c	2011-08-01 06:11:41 UTC (rev 38889)
+++ trunk/blender/source/blender/blenkernel/intern/DerivedMesh.c	2011-08-01 06:50:24 UTC (rev 38890)
@@ -1883,7 +1883,9 @@
 			
 			/* set the DerivedMesh to only copy needed data */
 			mask= (CustomDataMask)GET_INT_FROM_POINTER(curr->link);
-			DM_set_only_copy(dm, mask);
+			/* needMapping check here fixes bug [#28112], otherwise its
+			 * possible that it wont be copied */
+			DM_set_only_copy(dm, mask | (needMapping ? CD_MASK_ORIGINDEX : 0));
 			
 			/* add cloth rest shape key if need */
 			if(mask & CD_MASK_CLOTH_ORCO)