貼圖方面剛好想到這篇介紹Witcher 3的材質
https://polycount.com/discussion/174377/witcher-3-blood-and-wine-architectural-material/p1
短網址: https://tinyurl.com/5dddzzyp
同一區域建築model共用九個貼圖。
Vertex Painting做出個體的磨損、髒汙等效果。