Fix T39018: Duplicate entries for material/shader in AnimEditors

In many BI shader setups, the material which owns the nodetree is often itself
included as a node in that nodetree (i.e. to provide the base colour for that
mesh). This would often result in the material (and its subtree) getting included
in the dopesheet results twice.

1 files changed, 7 insertions, 2 deletions

diff --git a/source/blender/editors/animation/anim_filter.c b/source/blender/editors/animation/anim_filter.c
index 9d54d938cc7..a4a1e951477 100644
--- a/source/blender/editors/animation/anim_filter.c
+++ b/source/blender/editors/animation/anim_filter.c
@@ -1796,9 +1796,14 @@ static size_t animdata_filter_ds_materials(bAnimContext *ac, ListBase *anim_data
 			Material *base = give_current_material(ob, a);
 			Material *ma   = give_node_material(base);
 			
-			/* add channels from the nested material if it exists */
-			if (ma)
+			/* add channels from the nested material if it exists
+			 *   - skip if the same material is referenced in its node tree
+			 *     (which is common for BI materials) as that results in
+			 *     confusing duplicates
+			 */
+			if ((ma) && (ma != base)) {
 				items += animdata_filter_ds_material(ac, anim_data, ads, ma, filter_mode);
+			}
 		}
 	}