I have modeled a car and now im trying to texturize it. I would like to make the materials proceduraly, so I have not unwrapped the model (if its necesary I will, but I dont want to bake the textures).
My problem its that I would like to add dirt at the bottom and front of the vehicle, and I dont know if there is a way to do that, for example, in Substance Painter you can set a direction and it will make a mask with that, but I dont know any way to do that.
I have seen this video: https://www.youtube.com/watch?v=ZmrCoGj9m2Y but it doesnt seem to work to me
Im using blender 2.8. Thx