I have hit a bit of a material block. I am making a vertex paint material to control the normal things like levels of damage etc.
I need to find the -Z area of a vertex paint area.
For example, the image has two lines, the red is the vertex painted area. the lines in blue is the area i want to pull from the painted mask to add in leaking from the rust spots.
I’m having a bit of trouble figuring out if this is even possible. I have tried a couple of attempts but they never lead me anywhere close to what i’m trying to do.
I searched around and couldn’t find much on this topic so I was hoping someone would have thoughts.