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| author | Sybren A. Stüvel <sybren@stuvel.eu> | 2017-10-29 15:55:42 +0300 |
|---|---|---|
| committer | Sybren A. Stüvel <sybren@stuvel.eu> | 2017-10-29 16:36:10 +0300 |
| commit | 0012d54a70ac1dcd83531a32d1fe3ab017034e4b (patch) | |
| tree | d154aed0f4be4cdded2d8905621d734628df9493 /source/blender/alembic/intern/abc_mesh.cc | |
| parent | ab2d1f61a8e94650b8cb20a588b5c9ce27c13431 (diff) | |
Alembic import: fixed mesh corruption when changing topology
When the mesh changed topology but kept the vertex count the same, it would
result in a corrupt mesh. By checking the face & loop counts too, this has
become less likely.
I've checked IPolyMeshSchema::isConstant(), but it returns true even when
we see that the mesh changed topology.
Diffstat (limited to 'source/blender/alembic/intern/abc_mesh.cc')
| -rw-r--r-- | source/blender/alembic/intern/abc_mesh.cc | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/source/blender/alembic/intern/abc_mesh.cc b/source/blender/alembic/intern/abc_mesh.cc index 6545ced8e4a..36b134f8b0c 100644 --- a/source/blender/alembic/intern/abc_mesh.cc +++ b/source/blender/alembic/intern/abc_mesh.cc @@ -1082,7 +1082,10 @@ DerivedMesh *AbcMeshReader::read_derivedmesh(DerivedMesh *dm, ImportSettings settings; settings.read_flag |= read_flag; - if (dm->getNumVerts(dm) != positions->size()) { + bool topology_changed = positions->size() != dm->getNumVerts(dm) || + face_counts->size() != dm->getNumPolys(dm) || + face_indices->size() != dm->getNumLoops(dm); + if (topology_changed) { new_dm = CDDM_from_template(dm, positions->size(), 0, |