Originally posted by Chirone i would think you'd be able to do some 'non-fake bump mapping' if you changed the topology to suit that of a turtle shell also just noted your new sig. so on an off topic note hows that ray tracer of yours? Oops, sorry, I missed this :blush: I'll probably change the topology then. I didn't steal the sig from you at all... :p At the moment, it works for multiple spheres, has flat and lambert shading and saving to a .bmp (which, instead of using a library, I for some reason decided to do by hand; that set me back quite a while but I learnt a lot, which was the point after all). It hasn't got shadows or reflections yet. I haven't had much time to work on it recently as I've been busy with my university application but I hope to have at least those two things implemented by my first interview (4th of november). Another thing that has been distracting me is....well elephant arena is now on the iphone!