[Bf-blender-cvs] [e2b1c70b487] master: Fix bad index use drawing deformed face centers

[Campbell Barton]

Commit: e2b1c70b487aa61f59d57fbde61df0ce30aded20
Author: Campbell Barton
Date:   Thu Jun 1 15:04:22 2017 +1000
Branches: master
https://developer.blender.org/rBe2b1c70b487aa61f59d57fbde61df0ce30aded20

Fix bad index use drawing deformed face centers

===================================================================

M	source/blender/blenkernel/intern/editderivedmesh.c

===================================================================

diff --git a/source/blender/blenkernel/intern/editderivedmesh.c b/source/blender/blenkernel/intern/editderivedmesh.c
index 5591ee2a0d4..4a45bf1534c 100644
--- a/source/blender/blenkernel/intern/editderivedmesh.c
+++ b/source/blender/blenkernel/intern/editderivedmesh.c
@@ -149,6 +149,8 @@ static void emDM_ensurePolyCenters(EditDerivedBMesh *bmdm)
 			const float (*vertexCos)[3];
 			vertexCos = bmdm->vertexCos;
 
+			BM_mesh_elem_index_ensure(bm, BM_VERT);
+
 			BM_ITER_MESH_INDEX (efa, &fiter, bm, BM_FACES_OF_MESH, i) {
 				BM_face_calc_center_mean_vcos(bm, efa, polyCos[i], vertexCos);
 			}