[Bf-blender-cvs] [db1d7114581] master: Fix T74501: Wrong initial iteration when using mask expand

[Pablo Dobarro]

Commit: db1d7114581381e68d00cb173d093216c61d7ec6
Author: Pablo Dobarro
Date:   Fri Mar 6 16:44:17 2020 +0100
Branches: master
https://developer.blender.org/rBdb1d7114581381e68d00cb173d093216c61d7ec6

Fix T74501: Wrong initial iteration when using mask expand

The initial iteration for all symmetry areas is always 0. We were using
1 for the main stroke, so it was 1 step behind.

This was broken for expanding masks and face sets, but with face sets it
is more noticeable.

Reviewed By: brecht

Maniphest Tasks: T74501

Differential Revision: https://developer.blender.org/D7050

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

M	source/blender/editors/sculpt_paint/sculpt.c

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

diff --git a/source/blender/editors/sculpt_paint/sculpt.c b/source/blender/editors/sculpt_paint/sculpt.c
index ac03be14ab6..c4752d8cd58 100644
--- a/source/blender/editors/sculpt_paint/sculpt.c
+++ b/source/blender/editors/sculpt_paint/sculpt.c
@@ -10031,7 +10031,7 @@ static int sculpt_mask_expand_invoke(bContext *C, wmOperator *op, const wmEvent
 
   ss->filter_cache->mask_update_last_it = 1;
   ss->filter_cache->mask_update_current_it = 1;
-  ss->filter_cache->mask_update_it[SCULPT_active_vertex_get(ss)] = 1;
+  ss->filter_cache->mask_update_it[SCULPT_active_vertex_get(ss)] = 0;
 
   copy_v3_v3(ss->filter_cache->mask_expand_initial_co, SCULPT_active_vertex_co_get(ss));