From 4627e0d3d0ea2596f7b60f6327f592ca5e99fc9a Mon Sep 17 00:00:00 2001
From: Pratik Borhade <pratikborhade302@gmail.com>
Date: Wed, 14 May 2025 11:42:15 +0200
Subject: [PATCH] Fix #138168: Weightpainting: Smooth Operator does not respect
 locked flag

`BKE_object_defgroup_subset_from_select_type` does not consider locked
status of vertex group, ends up smoothing all vgroup when `deform pose bones`
is selected.

Pull Request: https://projects.blender.org/blender/blender/pulls/138435
---
 source/blender/blenkernel/intern/object_deform.cc | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/source/blender/blenkernel/intern/object_deform.cc b/source/blender/blenkernel/intern/object_deform.cc
index 99c48ed2fec..cc51e7bf9a0 100644
--- a/source/blender/blenkernel/intern/object_deform.cc
+++ b/source/blender/blenkernel/intern/object_deform.cc
@@ -793,12 +793,15 @@ bool *BKE_object_defgroup_subset_from_select_type(Object *ob,
     case WT_VGROUP_BONE_DEFORM: {
       int i;
       defgroup_validmap = BKE_object_defgroup_validmap_get(ob, *r_defgroup_tot);
+      const bool *locked_vgroups = BKE_object_defgroup_lock_flags_get(ob, *r_defgroup_tot);
       *r_subset_count = 0;
       for (i = 0; i < *r_defgroup_tot; i++) {
+        defgroup_validmap[i] &= !(locked_vgroups && locked_vgroups[i]);
         if (defgroup_validmap[i] == true) {
           *r_subset_count += 1;
         }
       }
+      MEM_SAFE_FREE(locked_vgroups);
       break;
     }
     case WT_VGROUP_BONE_DEFORM_OFF: {