oh - sorry. that wasn't too clear now i look at it.. replace the texture node with a texcoords node replace the swizzle nodes with component masks (one just R, one just G) and you'll get a black and white mask
I have this issue that has been driving me insane. I have what is essentially modular tiles for the floor on my level. The tiles are just a single planes (2 tris). The problem is the things keep flickering like crazy. I'm not really sure why they are acting like that. They're gigantic, but still have power of two…