message: Not all Moana island faces are quads
diff: @@ -135,8 +135,8 @@ static void store_faces(
  face_id = ~face_id; // indicates 2nd triangle in quad
  }
  - // Should all be quad faces for subdiv
  - assert(last == 4);
  + // Usually, but not always last == 4 (quads)
  + // osOcean e.g. contains triangles
  }
  