Commit: 0ae8ce3ab1d8295266c8cda60f3446249b4416ab
Author: Sergey Sharybin
Date: Mon Jun 9 17:32:19 2014 +0600
https://developer.blender.org/rB0ae8ce3ab1d8295266c8cda60f3446249b4416ab
Fix T40057: invisible hair particles slowing down mesh edits
Skip doing particle update in object_handle_update if object is in
edit mode.
Object will be re-evaluated on exit from edit mode anyway, so it's
_expected_ to be a safe change.
===================================================================
M source/blender/blenkernel/intern/object.c
===================================================================
diff --git a/source/blender/blenkernel/intern/object.c
b/source/blender/blenkernel/intern/object.c
index 745088a..a3e8ddc 100644
--- a/source/blender/blenkernel/intern/object.c
+++ b/source/blender/blenkernel/intern/object.c
@@ -2975,7 +2975,7 @@ void BKE_object_handle_update_ex(EvaluationContext
*eval_ctx,
lamp_drivers_update(scene, ob->data, ctime);
/* particles */
- if (ob->particlesystem.first) {
+ if (ob != scene->obedit && ob->particlesystem.first) {
ParticleSystem *tpsys, *psys;
DerivedMesh *dm;
ob->transflag &= ~OB_DUPLIPARTS;
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