Commit: 6752022310b34bc6dd244f33903b898ff428777c
Author: Sergey Sharybin
Date: Fri Mar 8 14:37:46 2019 +0100
Branches: master
https://developer.blender.org/rB6752022310b34bc6dd244f33903b898ff428777c
Fix T62327: Multires with Particles: Undo not working
Modifier stack was forced to be re-evaluated when it was not
supposed to. Should also improve sculpt performance.
===================================================================
M source/blender/depsgraph/intern/depsgraph_tag.cc
===================================================================
diff --git a/source/blender/depsgraph/intern/depsgraph_tag.cc
b/source/blender/depsgraph/intern/depsgraph_tag.cc
index 493247e252f..f6887af63f2 100644
--- a/source/blender/depsgraph/intern/depsgraph_tag.cc
+++ b/source/blender/depsgraph/intern/depsgraph_tag.cc
@@ -622,8 +622,12 @@ void graph_id_tag_update(Main *bmain,
/* Special case for nested node tree datablocks. */
id_tag_update_ntree_special(bmain, graph, id, flag, update_source);
/* Direct update tags means that something outside of simulated/cached
- * physics did change and that cache is to be invalidated. */
- if (update_source == DEG_UPDATE_SOURCE_USER_EDIT) {
+ * physics did change and that cache is to be invalidated.
+ * This is only needed if data changes. If it's just a drawing, we keep
the
+ * point cache. */
+ if (update_source == DEG_UPDATE_SOURCE_USER_EDIT &&
+ flag != ID_RECALC_SHADING)
+ {
graph_id_tag_update_single_flag(
bmain, graph, id, id_node, ID_RECALC_POINT_CACHE,
update_source);
}
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