Commit: b024ccd61992e33c62485a80c903a0f284d42dc5
Author: Sergey Sharybin
Date:   Fri Aug 28 14:54:27 2015 +0200
Branches: master
https://developer.blender.org/rBb024ccd61992e33c62485a80c903a0f284d42dc5

Fix T45929: OpenSubdiv was doing extra object recalc tags

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

M       source/blender/blenkernel/intern/depsgraph.c
M       source/blender/blenkernel/intern/scene.c
M       source/blender/depsgraph/intern/depsgraph.cc

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

diff --git a/source/blender/blenkernel/intern/depsgraph.c 
b/source/blender/blenkernel/intern/depsgraph.c
index 1e286b3..0d74c35 100644
--- a/source/blender/blenkernel/intern/depsgraph.c
+++ b/source/blender/blenkernel/intern/depsgraph.c
@@ -1143,9 +1143,12 @@ void dag_add_relation(DagForest *forest, DagNode *fob1, 
DagNode *fob2, short rel
        if ((rel & DAG_RL_DATA_DATA) != 0) {
                if (fob1->type == ID_OB) {
                        if ((fob1->eval_flags & DAG_EVAL_NEED_CPU) == 0) {
-                               Object *object = fob1->ob;
-                               /* Make sure object has all the data on CPU. */
-                               object->recalc |= OB_RECALC_DATA;
+                               Object *ob2 = fob2->ob;
+                               if (ob2->recalc & OB_RECALC_ALL) {
+                                       /* Make sure object has all the data on 
CPU. */
+                                       Object *ob1 = fob1->ob;
+                                       ob1->recalc |= OB_RECALC_DATA;
+                               }
                                fob1->eval_flags |= DAG_EVAL_NEED_CPU;
                        }
                }
diff --git a/source/blender/blenkernel/intern/scene.c 
b/source/blender/blenkernel/intern/scene.c
index cccdbff..f114856 100644
--- a/source/blender/blenkernel/intern/scene.c
+++ b/source/blender/blenkernel/intern/scene.c
@@ -1587,7 +1587,9 @@ static void scene_free_unused_opensubdiv_cache(Scene 
*scene)
                        if (md != NULL && md->type == eModifierType_Subsurf) {
                                SubsurfModifierData *smd = (SubsurfModifierData 
*) md;
                                bool object_in_editmode = object->mode == 
OB_MODE_EDIT;
-                               if (!smd->use_opensubdiv) {
+                               if (!smd->use_opensubdiv ||
+                                   DAG_get_eval_flags_for_object(scene, 
object) & DAG_EVAL_NEED_CPU)
+                               {
                                        if (smd->mCache != NULL) {
                                                
ccgSubSurf_free_osd_mesh(smd->mCache);
                                        }
diff --git a/source/blender/depsgraph/intern/depsgraph.cc 
b/source/blender/depsgraph/intern/depsgraph.cc
index a2c17b0..d9d94d6 100644
--- a/source/blender/depsgraph/intern/depsgraph.cc
+++ b/source/blender/depsgraph/intern/depsgraph.cc
@@ -356,13 +356,15 @@ DepsRelation 
*Depsgraph::add_new_relation(OperationDepsNode *from,
        DepsRelation *rel = OBJECT_GUARDED_NEW(DepsRelation, from, to, type, 
description);
        /* TODO(sergey): Find a better place for this. */
 #ifdef WITH_OPENSUBDIV
-       if (type == DEPSREL_TYPE_GEOMETRY_EVAL) {
+       ComponentDepsNode *comp_node = from->owner;
+       if (comp_node->type == DEPSNODE_TYPE_GEOMETRY) {
                IDDepsNode *id_to = to->owner->owner;
-               IDDepsNode *id_from = to->owner->owner;
-               if (id_to != id_from) {
-                       if ((id_to->eval_flags & DAG_EVAL_NEED_CPU) == 0) {
-                               id_to->tag_update(this);
-                               id_to->eval_flags |= DAG_EVAL_NEED_CPU;
+               IDDepsNode *id_from = from->owner->owner;
+               Object *object_to = (Object *)id_to->id;
+               if (id_to != id_from && (object_to->recalc & OB_RECALC_ALL)) {
+                       if ((id_from->eval_flags & DAG_EVAL_NEED_CPU) == 0) {
+                               id_from->tag_update(this);
+                               id_from->eval_flags |= DAG_EVAL_NEED_CPU;
                        }
                }
        }

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