Dependency Graph: some refactoring which should have no user visible impact

besides performance in some cases.

* DAG_scene_sort is now removed and replaced by DAG_relations_tag_update in
  most cases. This will clear the dependency graph, and only rebuild it right
  before it's needed again when the scene is re-evaluated.

  This is done because DAG_scene_sort is slow when called many times from
  python operators. Further the scene argument is not needed because most
  operations can potentially affect more than the current scene.

* DAG_scene_relations_update will now rebuild the dependency graph if it's not
  there yet, and DAG_scene_relations_rebuild will force a rebuild for the rare
  cases that need it.

* Remove various places where ob->recalc was set manually. This should go
  through DAG_id_tag_update() in nearly all cases instead since this is now
  a fast operation. Also removed DAG_ids_flush_update that goes along with
  such manual tagging of ob->recalc.

1 files changed, 1 insertions, 4 deletions

diff --git a/source/blender/editors/space_graph/graph_buttons.c b/source/blender/editors/space_graph/graph_buttons.c
index 483348db18e..ab16a9d55e6 100644
--- a/source/blender/editors/space_graph/graph_buttons.c
+++ b/source/blender/editors/space_graph/graph_buttons.c
@@ -383,10 +383,7 @@ static void do_graph_region_driver_buttons(bContext *C, void *UNUSED(arg), int e
 		case B_IPO_DEPCHANGE:
 		{
 			/* rebuild depsgraph for the new deps */
-			DAG_scene_sort(bmain, scene);
-			
-			/* force an update of depsgraph */
-			DAG_ids_flush_update(bmain, 0);
+			DAG_relations_tag_update(bmain);
 		}
 		break;
 	}