Fix for crash when sculpting on multires object during playback

- Restored BLI_pbvh_grids_update stuff;
- Marc all nodes as changes in ED_sculpt_modifiers_changed, so
  draw_buffers would be keept correct.

1 files changed, 10 insertions, 0 deletions

diff --git a/source/blender/editors/sculpt_paint/sculpt.c b/source/blender/editors/sculpt_paint/sculpt.c
index fa8d61d73de..fa44cd5b122 100644
--- a/source/blender/editors/sculpt_paint/sculpt.c
+++ b/source/blender/editors/sculpt_paint/sculpt.c
@@ -109,6 +109,16 @@ void ED_sculpt_modifiers_changed(Object *ob)
 		}
 
 		sculpt_free_deformMats(ob->sculpt);
+	} else {
+		PBVHNode **nodes;
+		int n, totnode;
+
+		BLI_pbvh_search_gather(ss->pbvh, NULL, NULL, &nodes, &totnode);
+
+		for(n = 0; n < totnode; n++)
+			BLI_pbvh_node_mark_update(nodes[n]);
+
+		MEM_freeN(nodes);
 	}
 }