FUN. @cgCody already built a node setup to rotate normals and put it on his profile, but his profile is hidden… thx. Rotate normal map inside the node editor?
Edit1: ok, I think I know what you meant @Unwave. There is a vector rotation node that simplifies my setup a bit. The same one can be used with the image color output as the vector input for the rotation node. I’ll post a normal map verison of my node spaghetti setup as soon as possible 