From 79cfd5134dfee0aec560c2a1b5168156e596c85f Mon Sep 17 00:00:00 2001
From: Brecht Van Lommel <brechtvanlommel@gmail.com>
Date: Sat, 18 May 2019 12:41:09 +0200
Subject: [PATCH] Fix image not being marked as modified on texture paint
 undo/redo

---
 source/blender/editors/sculpt_paint/paint_image_undo.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/source/blender/editors/sculpt_paint/paint_image_undo.c b/source/blender/editors/sculpt_paint/paint_image_undo.c
index b80144ac4af..bb73d424152 100644
--- a/source/blender/editors/sculpt_paint/paint_image_undo.c
+++ b/source/blender/editors/sculpt_paint/paint_image_undo.c
@@ -349,7 +349,9 @@ static void image_undo_restore_list(ListBase *lb, struct UndoIDPtrMap *id_map)
 
     undo_copy_tile(tile, tmpibuf, ibuf, RESTORE_COPY);
 
+    BKE_image_mark_dirty(ima, ibuf);
     GPU_free_image(ima); /* force OpenGL reload */
+
     if (ibuf->rect_float) {
       ibuf->userflags |= IB_RECT_INVALID; /* force recreate of char rect */
     }