[Bf-blender-cvs] [2bb73787791] blender-v2.90-release: Fix T79222: Assert due to multiple building of same scene sequencer in depsgraph.

[Bastien Montagne]

Commit: 2bb73787791a1743d421d4b418ed3b635eb17ccd
Author: Bastien Montagne
Date:   Mon Aug 3 15:09:21 2020 +0200
Branches: blender-v2.90-release
https://developer.blender.org/rB2bb73787791a1743d421d4b418ed3b635eb17ccd

Fix T79222: Assert due to multiple building of same scene sequencer in 
depsgraph.

Just check and skip building if it has already been done before.

Thanks to @sergey for the help.

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

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

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

diff --git a/source/blender/depsgraph/intern/builder/deg_builder_nodes.cc 
b/source/blender/depsgraph/intern/builder/deg_builder_nodes.cc
index c8309656f21..dcdcf0c05ca 100644
--- a/source/blender/depsgraph/intern/builder/deg_builder_nodes.cc
+++ b/source/blender/depsgraph/intern/builder/deg_builder_nodes.cc
@@ -1797,6 +1797,9 @@ void DepsgraphNodeBuilder::build_scene_sequencer(Scene 
*scene)
   if (scene->ed == nullptr) {
     return;
   }
+  if (built_map_.checkIsBuiltAndTag(scene, BuilderMap::TAG_SCENE_SEQUENCER)) {
+    return;
+  }
   build_scene_audio(scene);
   Scene *scene_cow = get_cow_datablock(scene);
   add_operation_node(&scene->id,

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