Painting dirt and rust variations

With my two gas pumps in place, I'm going to add a little bit of dirt and rust variation. …I've made it easy to do in the way that I've set up my textures. …Working with the layer sets and working in lots of layers within them allows me to do …easy changes and get different rust going. …I can see in here, aside from the blue, where I may want to make a change, because I've …got the same dip in the white with the rust right here and the same bubbles right on that white panel. …One of the things we'll see a lot of times in games is there we're going to swap out …different parts of a diffuse texture, layering pieces over.…

In this case, I've got the rust and the paint coming into one layer set. …What we might see are instead, clean gas pump textures that are red and blue, and over them …gets laid as a decal a different rust. …There's different ways we can do this in Unity or other game engines, but the idea of keeping …the layers separate in Photoshop so that we can see it in Maya, alter it, and put out …