OpengGL color / material properties

[Travis Cobbs]

In case it wasn't clear, my intention was for the bump map to be specified procedurally most of the time. My POV example showed one way to do that, but your suggestion of meta tokens (like, say "slope", "smooth_slope", etc) is probably a better choice. The only place I can think of off-hand for an actual bump map "image" is the LEGO logo on studs. There could be others, though. One problem I can see is that I'm definitely not qualified to specify details about the image format, and I'm not sure anyone else on the LSC is either.