Questions about obj format support:

[weiyu666]

1. Texture mapping support
   The existing ones only support "map_kd" Diffuse Texture Map and do not support some commonly used textures such as: Ambient Texture Map "map_Ka" and Specular Hightlight Map "map_Ns" Bump Map "map_bump"; the current situation is as follows:
   

2. Support for geometric part group names and object names
   There are two very common attributes at this stage
   If the group name and object name are not supported, it is a disaster for the model composed of multiple nodes or nodes~