Fix cycles viewport render getting stuck with driven/animated nodes, the updated

flag would not get cleared due to the nodetree not being a real datablock.

1 files changed, 16 insertions, 0 deletions

diff --git a/source/blender/blenkernel/intern/node.c b/source/blender/blenkernel/intern/node.c
index 70867a45fd7..17dcf34b71f 100644
--- a/source/blender/blenkernel/intern/node.c
+++ b/source/blender/blenkernel/intern/node.c
@@ -38,9 +38,13 @@
 
 #include "DNA_action_types.h"
 #include "DNA_anim_types.h"
+#include "DNA_lamp_types.h"
+#include "DNA_material_types.h"
 #include "DNA_node_types.h"
 #include "DNA_node_types.h"
 #include "DNA_scene_types.h"
+#include "DNA_texture_types.h"
+#include "DNA_world_types.h"
 
 #include "BLI_string.h"
 #include "BLI_math.h"
@@ -1154,6 +1158,18 @@ void ntreeSetOutput(bNodeTree *ntree)
 	 * might be different for editor or for "real" use... */
 }
 
+bNodeTree *ntreeFromID(ID *id)
+{
+	switch (GS(id->name)) {
+		case ID_MA: return ((Material*)id)->nodetree;
+		case ID_LA: return ((Lamp*)id)->nodetree;
+		case ID_WO: return ((World*)id)->nodetree;
+		case ID_TE: return ((Tex*)id)->nodetree;
+		case ID_SCE: return ((Scene*)id)->nodetree;
+		default: return NULL;
+	}
+}
+
 typedef struct MakeLocalCallData {
 	ID *group_id;
 	ID *new_id;