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FXAA
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Driklyn Offline
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Post: #1
FXAA
Apparently there is a new anti-aliasing technique known as FXAA (Fast Approximate Anti-Aliasing) that is available in Duke Nukem Forever and FEAR 3. Looks interesting, however, it only works with NVIDIA graphics cards.

Excerpt from article:
"FXAA is a shader based image filter that is done in post process (along with other items like motion blur/bloom/etc). It is 100% compatible with deferred rendering engines, and also can have a lower memory footprint and a performance advantage. The way that FXAA is implemented can vary from developer to developer and is an ingame option feature as opposed to an NVIDIA control panel option."

http://www.evga.com/forums/tm.aspx?m=1082473
06-22-2011 10:53 PM
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Esenthel Offline
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Post: #2
RE: FXAA
looks interesting, I will look at it and possibly implement this.

engine already has something similar : edge softening high (this is also image based post process anti aliasing)
06-22-2011 11:08 PM
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Driklyn Offline
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Post: #3
RE: FXAA
Cool! Yeah, it does seem similar.

According to a post on that thread, AMD's equivalent to FXAA is MLAA (Morphological Anti-Aliasing).

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But now that I look at it more, MLAA is just a graphics card setting so it's not anything you would need to implement (unless there's a way to force it for users that don't have it currently enabled).
(This post was last modified: 06-22-2011 11:42 PM by Driklyn.)
06-22-2011 11:37 PM
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Chris Offline
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Post: #4
RE: FXAA
This site keeps up with these kinda GPU techniques too: http://www.geeks3d.com/20110622/fxaa-3-v...-released/
06-22-2011 11:40 PM
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Driklyn Offline
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Post: #5
RE: FXAA
Nice link, Chris. That will also work with Radeon cards.
06-22-2011 11:50 PM
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Driklyn Offline
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Post: #6
RE: FXAA
Esenthel: Just wanted to say thanks for adding this! Only took a week and a half to get it into the engine, super fast! smile

Have you done any performance testing? Notice any difference in quality vs speed (in terms of FPS) when tested against MLAA?
(This post was last modified: 07-11-2011 12:00 AM by Driklyn.)
07-10-2011 11:59 PM
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Esenthel Offline
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Post: #7
RE: FXAA
MLAA is sometimes slower and sometimes faster (depends on the scene I guess)
I've noticed that mlaa has slightly better quality
07-11-2011 12:23 AM
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Driklyn Offline
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Post: #8
RE: FXAA
Interesting results. Thanks for the input.
07-11-2011 12:55 AM
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Driklyn Offline
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Post: #9
RE: FXAA
The FXAA thread has been updated by the author -- this time for Deus Ex: Human Revolution. The results are pretty outstanding.
08-24-2011 03:37 AM
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