So this is probably a really noob question, and it has probably been answered before, but to be honest I simply didn't know what to google for this. So, I'm really new to shaders and I've just made a basic colour change shader, but it is not doing what I wanted it to do. What I want is for the shader to start at the bottom of the object, then uniformly move up the cube on all sides to the top. Unfortunately, it is working as though each face of the cube is a separate object. As I said, this is probably a really common question, I just didn't know what to look up. Thank you for your time.