diff options
| -rw-r--r-- | source/blender/modifiers/intern/MOD_weighted_normal.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/source/blender/modifiers/intern/MOD_weighted_normal.c b/source/blender/modifiers/intern/MOD_weighted_normal.c index 1f06803505a..7e339f0012d 100644 --- a/source/blender/modifiers/intern/MOD_weighted_normal.c +++ b/source/blender/modifiers/intern/MOD_weighted_normal.c @@ -491,9 +491,15 @@ static DerivedMesh *applyModifier(ModifierData *md, Object *ob, DerivedMesh *dm, const int numLoops = dm->getNumLoops(dm); const int numPolys = dm->getNumPolys(dm); + MEdge *medge = dm->getEdgeArray(dm); + if (me->medge == medge) { + /* We need to duplicate data here, otherwise setting custom normals (which may also affect sharp edges) could + * modify org mesh. */ + dm = CDDM_copy(dm); + medge = dm->getEdgeArray(dm); + } MPoly *mpoly = dm->getPolyArray(dm); MVert *mvert = dm->getVertArray(dm); - MEdge *medge = dm->getEdgeArray(dm); MLoop *mloop = dm->getLoopArray(dm); bool free_polynors = false; |