Originally posted by: BenSkywalker
Been avoiding this topic as it is so absurd.
Anyone enable colored mip maps in your title of choice(Q3 powered games or SS/SS:SE are the easiest IMO) and take a screenshot at a particular exact spot. Then, exit out of the game, move your 'detail' slider one notch, and repeat. You will see a larger varriance, by a decent margin, doing that then there are between the ATi and nV shots that DH posted.
Looking it over to me it appears that there is maybe a .05 offset in the LOD bias between the shots, it gets a bit amplified due to the angles of some of the surfaces however(it appears that the offset could be in the single digit pixel range- that's just enough to trigger some of the angled surfaces to a different mip transition).
so ben, forgive me for not following what you said.. what conclusion do you draw from what you posted? is it that the dx sdk software reference image will never exactly match the hardware rendered output? variance in the d3d specs and how hardware choosed to handle it? an error or bug in the driver? or is nvidia is cheating?
