Modifiers: Add normalize weights option to vertex weight modifiers

Original patch by Cody Winchester (@CodyWinch), several fixes and
cleanup by Bastien Montagne (@mont29).

Differential revision: https://developer.blender.org/D7656

1 files changed, 14 insertions, 0 deletions

diff --git a/source/blender/blenloader/intern/versioning_290.c b/source/blender/blenloader/intern/versioning_290.c
index 0a3a1a2f881..6574c983b09 100644
--- a/source/blender/blenloader/intern/versioning_290.c
+++ b/source/blender/blenloader/intern/versioning_290.c
@@ -26,6 +26,8 @@
 #include "DNA_brush_types.h"
 #include "DNA_genfile.h"
 #include "DNA_gpencil_modifier_types.h"
+#include "DNA_modifier_types.h"
+#include "DNA_object_types.h"
 #include "DNA_screen_types.h"
 
 #include "BKE_collection.h"
@@ -241,6 +243,18 @@ void blo_do_versions_290(FileData *fd, Library *UNUSED(lib), Main *bmain)
     }
   }
 
+  if (!MAIN_VERSION_ATLEAST(bmain, 290, 4)) {
+    /* Clear old deprecated bitflag from edit weights modifiers, we now use it for something else.
+     */
+    LISTBASE_FOREACH (Object *, ob, &bmain->objects) {
+      LISTBASE_FOREACH (ModifierData *, md, &ob->modifiers) {
+        if (md->type == eModifierType_WeightVGEdit) {
+          md->flag &= ~MOD_WVG_EDIT_WEIGHTS_NORMALIZE;
+        }
+      }
+    }
+  }
+
   /**
    * Versioning code until next subversion bump goes here.
    *