What is masking?

So I can show you a little bit easier. Each one of these colors is a different submat. And what that means is it gets to use four channels of a blend map per color. So when you're looking at the concept, you've got to take a moment to really plan out how you want to cut the geo up, because sometimes you end up getting into game when you're texturing and you're like, oh, actually, I can't really accomplish what I want. So go back to the low poly stage, cut some more geo in, break out this piece, rebuild your material, and then continue forward like that. So that's the only part where you really have to think about exactly what you want to get in the end.