Commit: d3e686d61eb93aed5487c4037d7675cf811039a1
Author: Sergey Sharybin
Date:   Wed Nov 21 16:29:22 2018 +0100
Branches: blender2.8
https://developer.blender.org/rBd3e686d61eb93aed5487c4037d7675cf811039a1

Depsgraph: Update comment

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

M       source/blender/depsgraph/intern/builder/deg_builder_relations.cc

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

diff --git a/source/blender/depsgraph/intern/builder/deg_builder_relations.cc 
b/source/blender/depsgraph/intern/builder/deg_builder_relations.cc
index 690c4842cc4..ab4acef6668 100644
--- a/source/blender/depsgraph/intern/builder/deg_builder_relations.cc
+++ b/source/blender/depsgraph/intern/builder/deg_builder_relations.cc
@@ -2425,6 +2425,11 @@ void 
DepsgraphRelationBuilder::build_copy_on_write_relations(IDDepsNode *id_node
                 *   to preserve that cache in copy-on-write, but for the time 
being
                 *   we allow flush to layer collections component which will 
ensure
                 *   that cached array fo bases exists and is up-to-date.
+                *
+                * - Action is allowed to flush as well, this way it's possible 
to
+                *   keep current tagging in animation editors (which tags 
action for
+                *   CoW update when it's changed) but yet guarantee evaluation 
order
+                *   with objects which are using that action.
                 */
                if (comp_node->type == DEG_NODE_TYPE_PARAMETERS ||
                    comp_node->type == DEG_NODE_TYPE_LAYER_COLLECTIONS ||

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