Fix T65447: Mask doesn't update in compositor unless there's motion blur on

This is probably just one of the related issues.

Root of the problem was that compositor job was using original scene and node
tree for compositing. It is not guaranteed to have all the evaluated data.

Switched compositor job to use it's own render-pipeline-like dependency graph
which has everything evaluated in it.

Reviewers: brecht

Reviewed By: brecht

Differential Revision: https://developer.blender.org/D4998

1 files changed, 12 insertions, 0 deletions

diff --git a/source/blender/depsgraph/DEG_depsgraph_build.h b/source/blender/depsgraph/DEG_depsgraph_build.h
index 15abc0c0a64..effcece6e00 100644
--- a/source/blender/depsgraph/DEG_depsgraph_build.h
+++ b/source/blender/depsgraph/DEG_depsgraph_build.h
@@ -33,6 +33,7 @@ struct Depsgraph;
 
 /* ------------------------------------------------ */
 
+struct bNodeTree;
 struct CacheFile;
 struct Collection;
 struct CustomData_MeshMasks;
@@ -65,6 +66,17 @@ void DEG_graph_build_for_render_pipeline(struct Depsgraph *graph,
                                          struct Scene *scene,
                                          struct ViewLayer *view_layer);
 
+/* Builds minimal dependency graph for compositor preview.
+ *
+ * Note that compositor editor might have pinned node tree, which is different from scene's node
+ * tree.
+ */
+void DEG_graph_build_for_compositor_preview(struct Depsgraph *graph,
+                                            struct Main *bmain,
+                                            struct Scene *scene,
+                                            struct ViewLayer *view_layer,
+                                            struct bNodeTree *nodetree);
+
 /* Tag relations from the given graph for update. */
 void DEG_graph_tag_relations_update(struct Depsgraph *graph);