It is possible that objects from dupli-groups depends on objects which are not in the dupli-group. We do need this objects to be evaluated as well on visible changes, so all dependencies for objects from the dupli-group are met. Unfortunately, we don't have parent relations on this state, so we're to use DFS over the whole DAG to gather such dependencies. This is probably not so bad since visible update is called really rarely. Reviewers: brecht Reviewed By: brecht Differential Revision: https://developer.blender.org/D326