@ FeiHongJr: I have a brick texture for the walls in my restaurant (if I were to use something else, it'll mean having to use a skin size of 2048x1024 (to keep the 1 pixel per quant resolution). Take out the roughness, I could stick with a 256x256 texture without too much trouble (though it'll get stretched to 4x the size meaning 4 quants per pixel). But, without the roughness, it'll become extremely difficult to judge distances. The bricks are 256 quants wide by 128 quants tall (6 inches by 3 inches). Yet, even with the roughness, it's still difficult to tell where one wall ends when another one is in the background (the same goes for my city's buildings)....