fix for problem with edge slide where it would stop shapekey modifier from being applied (because of added vertices),

now, instead of making hidden copies of faces, the faces are copied into a temp bmesh.

also remove a hash that was being created and not used (old code).

1 files changed, 19 insertions, 9 deletions

diff --git a/source/blender/bmesh/intern/bmesh_construct.c b/source/blender/bmesh/intern/bmesh_construct.c
index 15030f90c65..a6897d533e7 100644
--- a/source/blender/bmesh/intern/bmesh_construct.c
+++ b/source/blender/bmesh/intern/bmesh_construct.c
@@ -890,6 +890,24 @@ static BMFace *bm_mesh_copy_new_face(BMesh *bm_new, BMesh *bm_old,
 	return f_new;
 }
 
+void BM_mesh_copy_init_customdata(BMesh *bm_dst, BMesh *bm_src, const BMAllocTemplate *allocsize)
+{
+	if (allocsize == NULL) {
+		allocsize = &bm_mesh_allocsize_default;
+	}
+
+	CustomData_copy(&bm_src->vdata, &bm_dst->vdata, CD_MASK_BMESH, CD_CALLOC, 0);
+	CustomData_copy(&bm_src->edata, &bm_dst->edata, CD_MASK_BMESH, CD_CALLOC, 0);
+	CustomData_copy(&bm_src->ldata, &bm_dst->ldata, CD_MASK_BMESH, CD_CALLOC, 0);
+	CustomData_copy(&bm_src->pdata, &bm_dst->pdata, CD_MASK_BMESH, CD_CALLOC, 0);
+
+	CustomData_bmesh_init_pool(&bm_dst->vdata, allocsize->totvert, BM_VERT);
+	CustomData_bmesh_init_pool(&bm_dst->edata, allocsize->totedge, BM_EDGE);
+	CustomData_bmesh_init_pool(&bm_dst->ldata, allocsize->totloop, BM_LOOP);
+	CustomData_bmesh_init_pool(&bm_dst->pdata, allocsize->totface, BM_FACE);
+}
+
+
 BMesh *BM_mesh_copy(BMesh *bm_old)
 {
 	BMesh *bm_new;
@@ -908,15 +926,7 @@ BMesh *BM_mesh_copy(BMesh *bm_old)
 	/* allocate a bmesh */
 	bm_new = BM_mesh_create(&allocsize);
 
-	CustomData_copy(&bm_old->vdata, &bm_new->vdata, CD_MASK_BMESH, CD_CALLOC, 0);
-	CustomData_copy(&bm_old->edata, &bm_new->edata, CD_MASK_BMESH, CD_CALLOC, 0);
-	CustomData_copy(&bm_old->ldata, &bm_new->ldata, CD_MASK_BMESH, CD_CALLOC, 0);
-	CustomData_copy(&bm_old->pdata, &bm_new->pdata, CD_MASK_BMESH, CD_CALLOC, 0);
-
-	CustomData_bmesh_init_pool(&bm_new->vdata, allocsize.totvert, BM_VERT);
-	CustomData_bmesh_init_pool(&bm_new->edata, allocsize.totedge, BM_EDGE);
-	CustomData_bmesh_init_pool(&bm_new->ldata, allocsize.totloop, BM_LOOP);
-	CustomData_bmesh_init_pool(&bm_new->pdata, allocsize.totface, BM_FACE);
+	BM_mesh_copy_init_customdata(bm_new, bm_old, &allocsize);
 
 	vtable = MEM_mallocN(sizeof(BMVert *) * bm_old->totvert, "BM_mesh_copy vtable");
 	etable = MEM_mallocN(sizeof(BMEdge *) * bm_old->totedge, "BM_mesh_copy etable");