Quote:...The grass layer must maintain a red and blue value of 0, or else it will interfere with other aspects of the heightmap. Linked is my current project, so that you can have a better idea of what I'm trying to do...
Well, I was going to post an example ([ https://i.imgur.com/8SEKogu.jpg ) but how can you have a layer that is shaded and still retain R & B = 0 ?
No link to your current project showing
Edit: Answering my own question, You can if Green is pure Green (not a guessed grass-type green)
Attached Gimp xcf.gz with two possibilities Solid noise layer in multiply mode / difference clouds layer in linear-burn mode