Well, chances are you don’t know how to make this texture.
Can’t you see the problem?
Anything in particular? Sound easy?
Well, that’s what I told myself…until I had to do it.
Here’s what you need to see: 2 materials assigned to different parts of the geometry.
So far you’re going to say to me “Rudy, it’s easy, we make 2 slots of material, each slot is assigned to a part of the geometry and basta.”
Yes, of course. That’s what I started doing too…until I needed to add a third material that overlapped the previous two.
I started by bugging, before finding an elegant solution that has given rise to a new feature in Materializer addon. Let me explain.

EN : https://youtu.be/OXQNM-WI3c4

FR : https://youtu.be/_zb5pJnYkyw