I'm using camera.fog_start. . . mostly because I don't know a thing about shaders . Can you explain the volumetric fog thing a little more and maybe show an example of the grid-like pattern you're talking about? Do you just place the model right in front of your camera?

How about having trees and things gradually show up in the distance rather than just popping up on screen once in the clip range? Should I do some sort of transparency fade? Or would it look more realistic to change their scale based on distance like they do in Doom?

Thanks,
Spaz