[Bf-blender-cvs] [b5c841498c4] master: Fix adding a paint texture slot not refreshing

[Campbell Barton]

Commit: b5c841498c468771219b89c6b58bc751ee4e2472
Author: Campbell Barton
Date:   Mon Feb 4 14:40:11 2019 +1100
Branches: master
https://developer.blender.org/rBb5c841498c468771219b89c6b58bc751ee4e2472

Fix adding a paint texture slot not refreshing

Adding a new slot wasn't refreshing when the
object had no material.

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

M	source/blender/blenkernel/intern/material.c

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

diff --git a/source/blender/blenkernel/intern/material.c b/source/blender/blenkernel/intern/material.c
index b4dffc11037..17a26f1a4ba 100644
--- a/source/blender/blenkernel/intern/material.c
+++ b/source/blender/blenkernel/intern/material.c
@@ -1089,7 +1089,8 @@ void BKE_texpaint_slot_refresh_cache(Scene *scene, Material *ma)
 	if (!ma)
 		return;
 
-	DEG_id_tag_update(&ma->id, ID_RECALC_SHADING);
+	/* COW needed when adding texture slot on an object with no materials. */
+	DEG_id_tag_update(&ma->id, ID_RECALC_SHADING | ID_RECALC_COPY_ON_WRITE);
 
 	if (ma->texpaintslot) {
 		MEM_freeN(ma->texpaintslot);