Is it possible to sample the alpha channel? It doesn't appear to work when I try it with a png.
I'm trying to come up with a way of having more than 6 textures on my terrain. I could use a seperate blendmap for each quad of my quad tree terrain.
6 textures will probably do tbh and I really don't want to be sample from 3 blendmaps (for 9 textures) as I think that might really start to kill performance