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View Full Version : Another Filtering Comparison


simwiz2
06-04-04, 05:34 PM
http://www.ixbt.com/video2/nv40-rx800-5-p1.shtml

It's not in English, but it has good comparison screenshots.

Nv40
06-04-04, 07:57 PM
yeah.. interesting shots..

in many games Brylinear~ trilinear ~Trylinear~ will look the same

http://www.ixbt.com/video2/nv40-rx800-5-p8.shtml

and if you add plain bilinear there.. it also can look identical to Trilinear in some games.. thats why IQ can be so subjective.. specially in still screenshots.

however there are games or texures in levels where the lack of full trilinear are more noticeable ,where hard transitions can be very easily noticed with ATI "optimizations" .. in the X800.. look at the Seious sam shots..

http://www.ixbt.com/video2/nv40-rx800-5-p7.shtml

in farcry looks like full trilinear is not enough ,in any card.. with some levels, however still the more harder transitions are done in the X800.. in the pavement shots..

http://www.ixbt.com/video2/nv40-rx800-5-p2.shtml

when AF is used the diferences might not be noticeable..

i have no problem with Brilinear or any other optimization ,if it can look as good as Trilinear at many times without the huge drop in performance, but when they are done in secrecy to win benchmarks at the expense of others doing what it requested ..there is an issue.

so for the people that keep saying .. "i have not seen a diference"..
guess what..? "THere are diferences" and this is just more evidence of it and wich in the eyes of many people will degrade the IQ in motion.
since harsh transitions are annoying for many people games. so yes is also trade IQ. and this is not any diferent to the old brilinear modes in Nvidia NV3x cards ,exept that this Time is done By ATi behind the scenes ,since they found a way to hide the optimization from the use of mipmap colors aplications ,*which they encourage reviewers to use.* (even thought some ATi fans will say is just a "coincidence" and that this is because is a "smart algorithm" ).

a good question for Ati can be if they still today encourage reviewers to use mipmaps colors aplication..as they do in the guidelines for reviewers.. in the light of recent discoveries.

btw..the non flat surfaces shots ,its not the best idea for comparisons of this trilinear vs optimizations,since more variables can enter into the diferences since ATI and NVdia use adaptive algorithms angle dependent there.

DivotMaker
06-04-04, 10:59 PM
:rolleyes2

simwiz2
06-05-04, 04:55 PM
What was surprising to me was that ATi's filtering failed where NV's did, on the center line in NFS:U. Isn't ATi's optimization supposed to look like full trilinear in games?

D.K.Tronics
06-05-04, 05:42 PM
Here's one, that compares a X800 Pro with the adaptive method on, and off. So I wonder how he turned it off ? Registry, perhaps.

If you download the videos on page 2, you'll notice the filtering in action. And it's noticeable, not by a great deal, but it's there.
The guy says that, with it off it matches his old 9800 XT.

Link (http://www.beyond3d.com/forum/viewtopic.php?t=13037&sid=73a8e7d9758db7e8984e2ed771fe1a3e)

spanker
06-05-04, 07:20 PM
If you download the videos on page 2, you'll notice the filtering in action. And it's noticeable, not by a great deal, but it's there.

i would say that you can clearly see it. if this aint fixed when the xt and ultra cards are in stores i guess i have to go back to nvidia.

Jarred
06-05-04, 07:42 PM
so for the people that keep saying .. "i have not seen a diference"..
guess what..? "THere are diferences" and this is just more evidence of it and wich in the eyes of many people will degrade the IQ in motion.
since harsh transitions are annoying for many people games. so yes is also trade IQ. and this is not any diferent to the old brilinear modes in Nvidia NV3x cards ,exept that this Time is done By ATi behind the scenes ,since they found a way to hide the optimization from the use of mipmap colors aplications ,*which they encourage reviewers to use.* (even thought some ATi fans will say is just a "coincidence" and that this is because is a "smart algorithm" ).



no they'll disregard the findings becuase they came from "dodgy" Russian sites that have "hidden agenda's"

muzz
06-05-04, 07:56 PM
:rolleyes: