diff options
| -rw-r--r-- | source/blender/blenkernel/intern/subsurf_ccg.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/source/blender/blenkernel/intern/subsurf_ccg.c b/source/blender/blenkernel/intern/subsurf_ccg.c index 2b05a6c8fc5..68ef1565bd4 100644 --- a/source/blender/blenkernel/intern/subsurf_ccg.c +++ b/source/blender/blenkernel/intern/subsurf_ccg.c @@ -300,7 +300,11 @@ static int ss_sync_from_uv(CCGSubSurf *ss, CCGSubSurf *origss, DerivedMesh *dm, float uv[3] = {0.0f, 0.0f, 0.0f}; /* only first 2 values are written into */ limit[0] = limit[1] = STD_UV_CONNECT_LIMIT; - vmap = BKE_mesh_uv_vert_map_create(mpoly, mloop, mloopuv, totface, totvert, 0, limit, false); + /* previous behaviour here is without accounting for winding, however this causes stretching in + * UV map in really simple cases with mirror + subsurf, see second part of T44530. Also, initially + * intention is to treat merged vertices from mirror modifier as seams, see code below with ME_VERT_MERGED + * This fixes a very old regression (2.49 was correct here) */ + vmap = BKE_mesh_uv_vert_map_create(mpoly, mloop, mloopuv, totface, totvert, 0, limit, true); if (!vmap) return 0; |