问题
When using BufferGeometry, how can I assign a material to a face ?
Is there something like an array containing the same informations that Face#materialIndex ?
回答1:
BufferGeometry doesn't support MeshFaceMaterial.
回答2:
This answer is old. It is possible to add multiple materials to a buffer geometry see how do drawcalls work in three.js?
来源：https://stackoverflow.com/questions/15752173/buffergeometry-faces-materials