24xAA

[Tom|Nbk]

Just had a go of this on my 2900 to see how it would run fired up CSS and the quality is unprecidented, it's like nothing before . Fair enough its near impossible to notice a difference in motion but to have such sheer quality very cool , best of all it ran 70-120FPS in a 40 man server on Office. There are only a select few games that can run this mode and still be playable but when they do it really shines, having anoher 2900 in crossfire should easily provide the extra horse power to make most games playable with this mode. Would be great to see nvidia implement this aswell. Somthing the G9x Series may bring to the table. Shader programmable AA F.T.W

 

[snowdog]

Is shader AA really that good on old games compared to conventional AA ?
Nice though 24 X AA .
Wish I had my 8800GTS by now but need to wait 3-4 more weeks, and thats to get 16x conventional AA, atm I'm using 4xx in most games, I can do 8x but framerates become too low on my 6800gs with 8x AA.

PICS perhaps, bmp quality pls so I can zoom in and quality check the AA for myself ? If it's not too much to ask .

 

[Tom|Nbk]

Is shader AA really that good on old games compared to conventional AA ?

Shader AA:

Pros:

Programmable, tweakable, can add as many different modes as you want and change them around with a driver update etc etc. Still a lot more fun to be had with these modes , I think I'll ask ATi for 48xAA .

Cons;

On some games (Shader Intensive) it can suffer versus the competition as there sometimes is not enough shader power but that has narrowed down now its more or less on par with the GTS at least which is somthing I guess and it shows ATi have mega tweaked the card and theres plenty more to come from it.

Will do some pictures now.

 

[phi1]

Im, getting this card soon. I think its the best choice.. gonna run it on a 22inch Wide screen monitor.

 

[RavenUK]

Can you run the CCS stress test with 16xAF in game and 24xAA in the CCC with all settings maxed in game, my results are below and this mode has a dramatic drop in FPS which is kind of expected but in my opinion is unplayable in most games at the moment.

 

[Tom|Nbk]

Yea I get around 60fps IIRC. But then when In game the performance is more than playable around 70-120FPS as I said above. It does really stress the card though and you need crossfire to run it in most games at a playable level atm

Here is a screenshot in untouched BMP format (5MB )

http://download.yousendit.com/06566A770231E955

 

[Squink]

I wish they'd stop adding letters after "AA". I recall trying 4xaa on my 6800U on Doom3 and being gobsmacked (i'd moved from a Ti500 that did no aa at all). Then I tried 8xSAA and I was doubly gobsmacked, except that my fps dropped from 50-odd to 15-odd.

Is ATI 24xAA better than 8xSAA or a different thing entirely?

 

[Jono8]

lol nice pic, bam and the jaggies are gone! Will be nice to see 24 AA+ in the next generation of cards so it can be playable in better looking games.

 

[snowdog]

Aight , looks like a nice pic, no jaggies to be found, shame there isn't any 256mb 2900xt for below gts price, I'd get one in that case, thx for posting pic.

 

[Last Kronin]

My results by forcing 24 in CCC and 16 Af ingame, better than urs raven , although it was running at 1280x1024, my max res

 

[Last Kronin]

Hmm tried it in Dirt got the about the same fps as normal however there seemed to be a problem in the menu and playing the game



If you look closely you will see that the edges are far from smooth in the minimap and in the menu, i can only sumurise that AA wasnt applied in the game ( on in CCC ) or it totally naffed the quality.

 

[fornowagain]

Is ATI 24xAA better than 8xSAA or a different thing entirely?

Its based on the standard 8xMSAA, with shader post processing using +16 pixels from the same 8x neighboring sample boxes. Sama as any custom filter, its performance scales from the base sample size used. From the pixel count its equivalent to NV 16xQ CSAA, which is the standard 8 + 16xCFAA. Obviously the main difference is the G80 uses its hardware ROPs and not its shaders, so limited modes. Interestingly enough there is a 32xAA mode on the G80, you can't access it through the control. Probably because its to demanding.

http://www.anandtech.com/video/showdoc.aspx?i=2988&p=14
http://www.beyond3d.com/content/reviews/16/14

 

[Gerard]

Anyway to enable 32x aa on the 8800's?

 

[helmutcheese]

Probably on the Quadro's same as 16AA was when only 8AA was avail to non Quadro cards.

Also read its on the dual core cards (only were 2, a Gigabyte 6600GT and a Asus 6800GT) or possibly SLI also.

 

[fornowagain]

Anyway to enable 32x aa on the 8800's?

Nhancer can get to it with a single card. Its a doubled up supersample, rendered twice the display res in both x and y. And it may not 'click' with every game.



no AA

16xQ

32xS (2x2 SSAA+8xMS)

16 vs 32 (it pretty subtle, but it's there)


They're not lossless, so artifacts, but you get the idea.

 

[Squink]

I was about to hit fornowagain with a "my eyes!" response to his technical explanation until he popped out with those diagrams. Now I'm left thinking that it's about time that GPUs learned to work with curved surfaces

 

[silversurfer]

Yea I get around 60fps IIRC. But then when In game the performance is more than playable around 70-120FPS as I said above. It does really stress the card though and you need crossfire to run it in most games at a playable level atm

Here is a screenshot in untouched BMP format (5MB )

http://download.yousendit.com/06566A770231E955

I zoomed in and the pixels are still square

 

[chaparral]

I zoomed in and the pixels are still square

Am guessing they would be square because the pixels on your monitor are square...

 

[jaykay]

Looking cool. The max i can do is 4xaa Thats on cod2 dx7.

 

[SS-89]

I cant see that the difference between 16Xaa and 32x aa is worth the performance hit as it is so minimal.