Fix [#21521] Displacement modifier does not update when modifing texture

Depgraph now handles texture dependencies - textures can affect objects/data via modifiers.

1 files changed, 21 insertions, 0 deletions

diff --git a/source/blender/blenkernel/intern/depsgraph.c b/source/blender/blenkernel/intern/depsgraph.c
index 1e5f276ba95..0568050950f 100644
--- a/source/blender/blenkernel/intern/depsgraph.c
+++ b/source/blender/blenkernel/intern/depsgraph.c
@@ -2250,6 +2250,16 @@ void DAG_on_load_update(void)
 	}
 }
 
+static void dag_id_flush_update__isDependentTexture(void *userData, Object *ob, ID **idpoin)
+{
+	struct { ID *id; int is_dependent; } *data = userData;
+	
+	if(*idpoin && GS((*idpoin)->name)==ID_TE) {
+		if (data->id == (*idpoin))
+			data->is_dependent = 1;
+	}
+}
+
 void DAG_id_flush_update(ID *id, short flag)
 {
 	Main *bmain= G.main;
@@ -2304,6 +2314,17 @@ void DAG_id_flush_update(ID *id, short flag)
 			}
 		}
 		
+		/* set flags based on textures - can influence depgraph via modifiers */
+		if(idtype == ID_TE) {
+			for(obt=bmain->object.first; obt; obt= obt->id.next) {
+				struct { ID *id; int is_dependent; } data = {id, 0};
+				
+				modifiers_foreachIDLink(obt, dag_id_flush_update__isDependentTexture, &data);
+				if (data.is_dependent)
+					obt->recalc |= OB_RECALC_DATA;
+			}
+		}
+		
 		/* set flags based on ShapeKey */
 		if(idtype == ID_KE) {
 			for(obt=bmain->object.first; obt; obt= obt->id.next) {