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BF3 Antianliasing Post?

post #1 of 9
Thread Starter 
If I turn on the deferred AA to even just a little 2xMSAA my frame rate tanks, it goes down at least 10 frames. Then I see this Antialaisning Post for low med or high. If I put it on HIGH my frames go down a bit but not like the deferred AA. Is this really AA or some kind of trick to make it look like AA?
post #2 of 9
I dont know if its driver issues or a patch on ea side, some have said its an ea issue but I get random dropped fps when i enable msaa on ultra settings even with my sli. At 2x its not so bad but enough to get you upset after just buying another card to sli with lol.
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post #3 of 9
AA Post, is exactly that, its antialiasing applied as a post processing effect AFAIK. So a minor perf hit, but looks pretty good.
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post #4 of 9
Someone mentioned that they got a slight performance boost with the Post AA set to HIGH. So I tried it out and I noticed the same thing. About 7-10 fps increase.

I now use 2x AA and High Post AA. Better frames in my case.
 
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post #5 of 9
Thread Starter 
But if you just use Post AA and not deferred AA do you get any AA at all?
post #6 of 9
Quote:
Originally Posted by Cyph3r View Post
AA Post, is exactly that, its antialiasing applied as a post processing effect AFAIK. So a minor perf hit, but looks pretty good.
Yeah i actually was told yesterday by someone (thank you someone, by the way) that i should turn off 2xAA with my eyefinity rig and start using High FXAA. So I did and my frames jump like 10fps
post #7 of 9
Quote:
Originally Posted by falcon26 View Post
But if you just use Post AA and not deferred AA do you get any AA at all?
Yes, you do. But the effect isn't as strong as using MSAA. The recommendation is that you should have Post on high pretty much all the time, as it adds some AA with very little FPS tradeoff.

Once you begin applying MSAA, the drop will be more dramatic, and you will have to find a level and framerate you deem acceptable. Things may improve as the drivers do.

[EDIT] Here is a great link with benches related specifically to FXAA and MSAA in BF3.
Edited by chewbaccasdad - 10/28/11 at 7:22am
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post #8 of 9
Interesting, I'll have to set it to High tonight and test.
 
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post #9 of 9
Thread Starter 
This would explain it taken from a review. It talks about why AMD recommends not using differed AA but post AA..

When we started testing on our own it became apparent why AMD did this. With MSAA enabled the performance sharply declines with Radeon boards and previous generation Nvidia products make AMD’s current generation hardware look foolish. However disabling MSAA allows AMD to catch up to Nvidia, as you saw in our High quality 1680x1050, 1920x1200 and 2560x1600 tests.
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