Depsgraph: Avoid transitive relation from local transform to final

There is always an uber eval node on the way. so we can avoid creating
some relations here in order to speed up both construction time and
evaluation.

1 files changed, 12 insertions, 6 deletions

diff --git a/source/blender/depsgraph/intern/builder/deg_builder_relations.cc b/source/blender/depsgraph/intern/builder/deg_builder_relations.cc
index ac917f2148a..46f053e23e0 100644
--- a/source/blender/depsgraph/intern/builder/deg_builder_relations.cc
+++ b/source/blender/depsgraph/intern/builder/deg_builder_relations.cc
@@ -406,12 +406,18 @@ void DepsgraphRelationBuilder::build_object(Main *bmain, Scene *scene, Object *o
 		add_relation(ob_ubereval_key, final_transform_key, DEPSREL_TYPE_COMPONENT_ORDER, "Temp Ubereval");
 	}
 	else {
-		/* operation order */
-		add_relation(base_op_key, final_transform_key, DEPSREL_TYPE_COMPONENT_ORDER, "Object Transform");
-
-		// XXX
-		add_relation(base_op_key, ob_ubereval_key, DEPSREL_TYPE_COMPONENT_ORDER, "Temp Ubereval");
-		add_relation(ob_ubereval_key, final_transform_key, DEPSREL_TYPE_COMPONENT_ORDER, "Temp Ubereval");
+		/* NOTE: Keep an eye here, we skip some relations here to "streamline"
+		 * dependencies and avoid transitive relations which causes overhead.
+		 * But once we get rid of uber eval node this will need reconsideration.
+		 */
+		add_relation(base_op_key,
+		             ob_ubereval_key,
+		             DEPSREL_TYPE_COMPONENT_ORDER,
+		             "Temp Ubereval");
+		add_relation(ob_ubereval_key,
+		             final_transform_key,
+		             DEPSREL_TYPE_COMPONENT_ORDER,
+		             "Temp Ubereval");
 	}