[Bf-blender-cvs] [09df9c7] depsgraph_refactor: Don't include animation -> drivers link if there is no animation to require it

[Joshua Leung]

Commit: 09df9c761fa01a82b06c388e23a68ecc9dd4c59c
Author: Joshua Leung
Date:   Tue Dec 9 15:56:38 2014 +1300
Branches: depsgraph_refactor
https://developer.blender.org/rB09df9c761fa01a82b06c388e23a68ecc9dd4c59c

Don't include animation -> drivers link if there is no animation to require it

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

M	source/blender/depsgraph/intern/depsgraph_build_relations.cpp

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

diff --git a/source/blender/depsgraph/intern/depsgraph_build_relations.cpp b/source/blender/depsgraph/intern/depsgraph_build_relations.cpp
index b46994c..5f6d333 100644
--- a/source/blender/depsgraph/intern/depsgraph_build_relations.cpp
+++ b/source/blender/depsgraph/intern/depsgraph_build_relations.cpp
@@ -496,7 +496,8 @@ void DepsgraphRelationBuilder::build_constraints(Scene *scene, ID *id, eDepsNode
 void DepsgraphRelationBuilder::build_animdata(ID *id)
 {
 	AnimData *adt = BKE_animdata_from_id(id);
-	if (!adt)
+	
+	if (adt == NULL)
 		return;
 	
 	ComponentKey adt_key(id, DEPSNODE_TYPE_ANIMATION);
@@ -520,9 +521,10 @@ void DepsgraphRelationBuilder::build_animdata(ID *id)
 		// ...
 		
 		/* prevent driver from occurring before own animation... */
-		// NOTE: probably not strictly needed (anim before parameters anyway)...
-		add_relation(adt_key, driver_key, DEPSREL_TYPE_OPERATION, 
-		             "[AnimData Before Drivers] DepsRel");
+		if (adt->action || adt->nla_tracks.first) {
+			add_relation(adt_key, driver_key, DEPSREL_TYPE_OPERATION, 
+						 "[AnimData Before Drivers] DepsRel");
+		}
 		
 		build_driver(id, fcurve);
 	}