Commit: 401e975c617973796a16ea73f2f96924c6bfad32
Author: Dalai Felinto
Date:   Wed May 23 19:33:25 2018 +0200
Branches: blender2.8
https://developer.blender.org/rB401e975c617973796a16ea73f2f96924c6bfad32

Fix curve not updating when scaling Bevel Object

Note the relationship we need is from the geometry/object to the curve data,
not the curve object.

Related to T55167, though when copy-on-write is enabled, we still get a crash.

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

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 10edc17e94e..900d9cfd1cf 100644
--- a/source/blender/depsgraph/intern/builder/deg_builder_relations.cc
+++ b/source/blender/depsgraph/intern/builder/deg_builder_relations.cc
@@ -1792,9 +1792,12 @@ void DepsgraphRelationBuilder::build_obdata_geom(Object 
*object)
                        /* curve's dependencies */
                        // XXX: these needs geom data, but where is geom stored?
                        if (cu->bevobj) {
-                               ComponentKey bevob_key(&cu->bevobj->id, 
DEG_NODE_TYPE_GEOMETRY);
+                               ComponentKey bevob_geom_key(&cu->bevobj->id, 
DEG_NODE_TYPE_GEOMETRY);
+                               add_relation(bevob_geom_key, obdata_geom_key, 
"Curve Bevel Geometry");
+                               /* We only need scale, but we can't tag 
individual TRANSFORM components. */
+                               ComponentKey bevob_key(&cu->bevobj->id, 
DEG_NODE_TYPE_TRANSFORM);
+                               add_relation(bevob_key, obdata_geom_key, "Curve 
Bevel Scale");
                                build_object(NULL, cu->bevobj);
-                               add_relation(bevob_key, geom_key, "Curve 
Bevel");
                        }
                        if (cu->taperobj) {
                                ComponentKey taperob_key(&cu->taperobj->id, 
DEG_NODE_TYPE_GEOMETRY);

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