1 files changed, 11 insertions, 6 deletions
diff --git a/source/blender/io/alembic/intern/abc_reader_mesh.cc b/source/blender/io/alembic/intern/abc_reader_mesh.cc
index ead908e87c2..e69c0edfec8 100644
--- a/source/blender/io/alembic/intern/abc_reader_mesh.cc
+++ b/source/blender/io/alembic/intern/abc_reader_mesh.cc
@@ -155,8 +155,8 @@ static void read_mverts(CDStreamConfig &config, const AbcMeshData &mesh_data)
   MVert *mverts = config.mvert;
   const P3fArraySamplePtr &positions = mesh_data.positions;
 
-  if (config.weight != 0.0f && mesh_data.ceil_positions != NULL &&
-      mesh_data.ceil_positions->size() == positions->size()) {
+  if (config.use_vertex_interpolation && config.weight != 0.0f &&
+      mesh_data.ceil_positions != NULL && mesh_data.ceil_positions->size() == positions->size()) {
     read_mverts_interp(mverts, positions, mesh_data.ceil_positions, config.weight);
     return;
   }
@@ -457,7 +457,7 @@ static void read_mesh_sample(const std::string &iobject_full_name,
   }
 }
 
-CDStreamConfig get_config(Mesh *mesh)
+CDStreamConfig get_config(Mesh *mesh, const bool use_vertex_interpolation)
 {
   CDStreamConfig config;
 
@@ -471,6 +471,7 @@ CDStreamConfig get_config(Mesh *mesh)
   config.totpoly = mesh->totpoly;
   config.loopdata = &mesh->ldata;
   config.add_customdata_cb = add_customdata_cb;
+  config.use_vertex_interpolation = use_vertex_interpolation;
 
   return config;
 }
@@ -646,7 +647,9 @@ Mesh *AbcMeshReader::read_mesh(Mesh *existing_mesh,
     }
   }
 
-  CDStreamConfig config = get_config(new_mesh ? new_mesh : existing_mesh);
+  Mesh *mesh_to_export = new_mesh ? new_mesh : existing_mesh;
+  const bool use_vertex_interpolation = read_flag & MOD_MESHSEQ_INTERPOLATE_VERTICES;
+  CDStreamConfig config = get_config(mesh_to_export, use_vertex_interpolation);
   config.time = sample_sel.getRequestedTime();
   config.modifier_error_message = err_str;
 
@@ -936,11 +939,13 @@ Mesh *AbcSubDReader::read_mesh(Mesh *existing_mesh,
   }
 
   /* Only read point data when streaming meshes, unless we need to create new ones. */
-  CDStreamConfig config = get_config(new_mesh ? new_mesh : existing_mesh);
+  Mesh *mesh_to_export = new_mesh ? new_mesh : existing_mesh;
+  const bool use_vertex_interpolation = read_flag & MOD_MESHSEQ_INTERPOLATE_VERTICES;
+  CDStreamConfig config = get_config(mesh_to_export, use_vertex_interpolation);
   config.time = sample_sel.getRequestedTime();
   read_subd_sample(m_iobject.getFullName(), &settings, m_schema, sample_sel, config);
 
-  return config.mesh;
+  return mesh_to_export;
 }
 
 }  // namespace blender::io::alembic