Fix T65134: Duplicated proxies in several scenes don't work

This is something which worked in Blender 2.79.
Need to do special trickery to ensure peoxy_from points to a
proper object.

Differential Revision: https://developer.blender.org/D6040

3 files changed, 15 insertions, 1 deletions

diff --git a/source/blender/blenkernel/intern/armature_update.c b/source/blender/blenkernel/intern/armature_update.c
index 00975976130..b4f5b1e2ec4 100644
--- a/source/blender/blenkernel/intern/armature_update.c
+++ b/source/blender/blenkernel/intern/armature_update.c
@@ -643,6 +643,10 @@ void BKE_pose_eval_init(struct Depsgraph *depsgraph, Scene *UNUSED(scene), Objec
   }
 
   BLI_assert(pose->chan_array != NULL || BLI_listbase_is_empty(&pose->chanbase));
+
+  if (object->proxy != NULL) {
+    object->proxy->proxy_from = object;
+  }
 }
 
 void BKE_pose_eval_init_ik(struct Depsgraph *depsgraph, Scene *scene, Object *object)
diff --git a/source/blender/depsgraph/intern/builder/deg_builder_nodes.cc b/source/blender/depsgraph/intern/builder/deg_builder_nodes.cc
index 7dfc863b847..d0e40d49527 100644
--- a/source/blender/depsgraph/intern/builder/deg_builder_nodes.cc
+++ b/source/blender/depsgraph/intern/builder/deg_builder_nodes.cc
@@ -527,6 +527,9 @@ void DepsgraphNodeBuilder::build_object(int base_index,
                                         eDepsNode_LinkedState_Type linked_state,
                                         bool is_visible)
 {
+  if (object->proxy != NULL) {
+    object->proxy->proxy_from = object;
+  }
   const bool has_object = built_map_.checkIsBuiltAndTag(object);
   /* Skip rest of components if the ID node was already there. */
   if (has_object) {
diff --git a/source/blender/depsgraph/intern/depsgraph_tag.cc b/source/blender/depsgraph/intern/depsgraph_tag.cc
index 058ee4e9076..b67629cde9e 100644
--- a/source/blender/depsgraph/intern/depsgraph_tag.cc
+++ b/source/blender/depsgraph/intern/depsgraph_tag.cc
@@ -511,6 +511,14 @@ void deg_graph_on_visible_update(Main *bmain, Depsgraph *graph, const bool do_ti
    * to evaluation though) with `do_time=true`. This means early output checks should be aware of
    * this. */
   for (DEG::IDNode *id_node : graph->id_nodes) {
+    const ID_Type id_type = GS(id_node->id_orig->name);
+    if (id_type == ID_OB) {
+      Object *object_orig = reinterpret_cast<Object *>(id_node->id_orig);
+      if (object_orig->proxy != NULL) {
+        object_orig->proxy->proxy_from = object_orig;
+      }
+    }
+
     if (!id_node->visible_components_mask) {
       /* ID has no components which affects anything visible.
        * No need bother with it to tag or anything. */
@@ -537,7 +545,6 @@ void deg_graph_on_visible_update(Main *bmain, Depsgraph *graph, const bool do_ti
      * other type of cache).
      *
      * TODO(sergey): Need to generalize this somehow. */
-    const ID_Type id_type = GS(id_node->id_orig->name);
     if (id_type == ID_OB) {
       flag |= ID_RECALC_TRANSFORM | ID_RECALC_GEOMETRY;
     }