Initial implememtation for dupli objects

Now dupli groups, objects, particles, ... are all working.

This introduces a flag for the iterator to determine whether we go over
Set and dupli objects or not.

Important to remember to keep the iteration of DEG_ as readonly.

Cycles is not working well for dupli groups, and it's memleaking
for dupli particles. So for now we iterate over main objects and set
only, not dupli.

To change that go in rna_scene.c and:

-DEG_OBJECT_ITER(graph, ob, DEG_OBJECT_ITER_FLAG_SET)
+DEG_OBJECT_ITER(graph, ob, DEG_OBJECT_ITER_FLAG_ALL)

Review and suggestions by Sergey Sharybin

2 files changed, 8 insertions, 3 deletions

diff --git a/source/blender/makesrna/intern/rna_depsgraph.c b/source/blender/makesrna/intern/rna_depsgraph.c
index d90f754bf23..d992e88431c 100644
--- a/source/blender/makesrna/intern/rna_depsgraph.c
+++ b/source/blender/makesrna/intern/rna_depsgraph.c
@@ -86,9 +86,13 @@ static void rna_Depsgraph_debug_stats(Depsgraph *graph, ReportList *reports)
 
 static void rna_Depsgraph_objects_begin(CollectionPropertyIterator *iter, PointerRNA *ptr)
 {
-	Depsgraph *graph = (Depsgraph *)ptr->data;
 	iter->internal.custom = MEM_callocN(sizeof(BLI_Iterator), __func__);
-	DEG_objects_iterator_begin(iter->internal.custom, graph);
+	DEGObjectsIteratorData *data = MEM_callocN(sizeof(DEGObjectsIteratorData), __func__);
+
+	data->graph = (Depsgraph *)ptr->data;
+	data->flag = DEG_OBJECT_ITER_FLAG_ALL;
+
+	DEG_objects_iterator_begin(iter->internal.custom, data);
 	iter->valid = ((BLI_Iterator *)iter->internal.custom)->valid;
 }
 
@@ -101,6 +105,7 @@ static void rna_Depsgraph_objects_next(CollectionPropertyIterator *iter)
 static void rna_Depsgraph_objects_end(CollectionPropertyIterator *iter)
 {
 	DEG_objects_iterator_end(iter->internal.custom);
+	MEM_freeN(((BLI_Iterator *)iter->internal.custom)->data);
 	MEM_freeN(iter->internal.custom);
 }
 
diff --git a/source/blender/makesrna/intern/rna_scene.c b/source/blender/makesrna/intern/rna_scene.c
index ee695caf1fa..a8127ae0106 100644
--- a/source/blender/makesrna/intern/rna_scene.c
+++ b/source/blender/makesrna/intern/rna_scene.c
@@ -3024,7 +3024,7 @@ static int rna_SceneLayer_multiple_engines_get(PointerRNA *UNUSED(ptr))
 static void rna_SceneLayer_update_tagged(SceneLayer *UNUSED(sl), bContext *C)
 {
 	Depsgraph *graph = CTX_data_depsgraph(C);
-	DEG_OBJECT_ITER(graph, ob)
+	DEG_OBJECT_ITER(graph, ob, DEG_OBJECT_ITER_FLAG_SET)
 	{
 		/* Don't do anything, we just need to run the iterator to flush
 		 * the base info to the objects. */