Replace a slow string search with `isinstance`

korman/exporter/mesh.py

@@ -136,8 +136,9 @@ class _MeshManager:
         # lightmap generation. The Blender Internal renderer does not seem to be smart enough to
         # take this into account. Thus, we temporarily apply modifiers to ALL meshes (even ones that
         # are not exported) such that we can generate proper lighting.
+        mesh_type = bpy.types.Mesh
         for i in scene.objects:
-            if i.type == "MESH" and i.is_modified(scene, "RENDER"):
+            if isinstance(i.data, mesh_type) and i.is_modified(scene, "RENDER"):
                 # Remember, storing actual pointers to the Blender objects can cause bad things to
                 # happen because Blender's memory management SUCKS!
                 self._overrides[i.name] = { "mesh": i.data.name, "modifiers": [] }