贴图方面刚好想到这篇介绍Witcher 3的材质
https://polycount.com/discussion/174377/witcher-3-blood-and-wine-architectural-material/p1
短网址: https://tinyurl.com/5dddzzyp
同一区域建筑model共用九个贴图。
Vertex Painting做出个体的磨损、脏污等效果。