Dirt could be done with a decal sheet or blend shader that uses some type of mask(s) or vert colors. The edges probably could be tackled with a trim sheet. I think yoiu could get that painterly surface imperfection on the edges that way easily and not have to mess with beveling every edge and vert normals.…
Hello guys, It's a part of a building that I'm making. How to make these jagged corners (yellow arrows) and this dirt (red)? I guess, I can make dirt using decals. But what to do with corners? AFAIK using normal maps for big constructions is bad practice. So I may bevel them and adjust vertex normal. Something like this…