I spent two days trying to re-create this method in Unreal. https://polycount.com/discussion/174377/witcher-3-blood-and-wine-architectural-material/p1 First I used an elaborate IF node tree and then I discovered the 2D Array Lookup node. I thought it would take the texture's UVs, split it into a given number, and then…
@A_B Sorry for taking so long to respond. If haven't messed with this in some time because I was doing other things. As far as purely getting better vertex painting results (minus everything else I did here) there's this video which walks you through everything pretty well: https://www.youtube.com/watch?v=OPHnxGb6KHA That…