glTF exporter: fix depsgraph evaluation after blender API changes

io_scene_gltf2/__init__.py

@@ -15,7 +15,7 @@
 bl_info = {
     'name': 'glTF 2.0 format',
     'author': 'Julien Duroure, Norbert Nopper, Urs Hanselmann, Moritz Becher, Benjamin Schmithüsen, Jim Eckerlein, and many external contributors',
-    "version": (0, 9, 29),
+    "version": (0, 9, 30),
     'blender': (2, 80, 0),
     'location': 'File > Import-Export',
     'description': 'Import-Export as glTF 2.0',

io_scene_gltf2/blender/exp/gltf2_blender_gather_nodes.py

@@ -224,7 +224,7 @@ def __gather_mesh(blender_object, export_settings):
 
         depsgraph = bpy.context.evaluated_depsgraph_get()
         blender_mesh_owner = blender_object.evaluated_get(depsgraph)
-        blender_mesh = blender_mesh_owner.to_mesh()
+        blender_mesh = blender_mesh_owner.to_mesh(preserve_all_data_layers=True, depsgraph=depsgraph)
         for prop in blender_object.data.keys():
             blender_mesh[prop] = blender_object.data[prop]
         skip_filter = True
@@ -311,8 +311,8 @@ def __gather_skin(blender_object, export_settings):
 
     # check if any vertices in the mesh are part of a vertex group
     depsgraph = bpy.context.evaluated_depsgraph_get()
-    # XXX: ...
-    blender_mesh = blender_object.evaluated_get(depsgraph).to_mesh()
+    blender_mesh_owner = blender_object.evaluated_get(depsgraph)
+    blender_mesh = blender_mesh_owner.to_mesh(preserve_all_data_layers=True, depsgraph=depsgraph)
     if not any(vertex.groups is not None and len(vertex.groups) > 0 for vertex in blender_mesh.vertices):
         return None