From 7eebebebc7bb08621d97a8318a37366fbd7b02e8 Mon Sep 17 00:00:00 2001
From: Pablo Dobarro <pablodp606@gmail.com>
Date: Wed, 22 Jul 2020 16:44:47 +0200
Subject: [PATCH] Fix T79164: Sculpting with smooth shading doesn't update
 normals

Just a missing update flag

Reviewed By: sergey

Maniphest Tasks: T79164

Differential Revision: https://developer.blender.org/D8364
---
 source/blender/editors/sculpt_paint/sculpt_smooth.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/source/blender/editors/sculpt_paint/sculpt_smooth.c b/source/blender/editors/sculpt_paint/sculpt_smooth.c
index 1a699c91e9b..7fbbcd1c896 100644
--- a/source/blender/editors/sculpt_paint/sculpt_smooth.c
+++ b/source/blender/editors/sculpt_paint/sculpt_smooth.c
@@ -242,6 +242,9 @@ static void do_smooth_brush_task_cb_ex(void *__restrict userdata,
         madd_v3_v3v3fl(val, vd.co, val, fade);
         SCULPT_clip(sd, ss, vd.co, val);
       }
+      if (vd.mvert) {
+        vd.mvert->flag |= ME_VERT_PBVH_UPDATE;
+      }
     }
   }
   BKE_pbvh_vertex_iter_end;