x800 cheating with AF

  • Thread starter Thread starter entium
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entium

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Does any one know the new benchmarks for the x800 with full trilinear filtration on? I was getting the impression it looses 10-20% frame rates.
 
No they weren't cheating, this has been documented, they were using different software that they didn't announce, just nvidia fanboi's saying they did, when they really didn't :-/
 
I wasn't even under the impression that increased AF was all that much of a performance hit.
 
Nvidia just wanted to make ATi look bad by saying this, tbh...nothing more :-/
 
It isn't a Cheat. It isn't Application detection. It isn't always on (it's dynamic). There are times when it's off. It isn't an benchmark optimization. There is no quality loss. They passed MS' WHQL certification.

Trilinear is a filtering technic that blends adjacent mipmaps.
ATI's filtering technic does the same thing and looses no quality.
ATI sees the data and judges the intensity of the filter in a dynamic way. It doesn't detect programs or anything in that way.

In some cases you receive full trilinear filtering. In other cases it just filters enough to keep 100% quality yet the work is reduced to produce that. Nvidia has their brilinear filtering (inbetween trilinear and bilinear with quality loss) always on. You have to hack it to turn it off. Not to mention there is a quality difference with Nvidia's filtering method.

My analogy.
Think of it like this. You have a circular object drawn on 8.5x11" paper and your goal is to keep that drawn object intact for full quality.

The old tried and true trilinear filtering would do nothing but proccess the whole page including the wasted white outside of the boarder. Full Quality, full page, full time.

Nvidia's brilinear is like trying to stay close to the drawn border but cuts corners to further improve speed with the result of quality loss.

ATI's filtering is dynamic with no app detection. When the border goes to the edge of the paper, when it doesn't know how much filtering to do, or when it is specificly requested (an example is colored mipmaps) then it does full trilinear filtering.
Otherwise it filters or cuts the waste to near the border with 100% quality. It doesn't touch the border or cut corners. Keeps the time to proccess down and quality up.

No one has complained about quality issues with ATI's filtering. Nvidia got slack last year on their forcing brilinear with first UT and then always on because of noticable quality loss.

ATI has responded and held a chat session. Here's the log. Link
 
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