Crysis同GRID 8X 真柤(AA ati ＆nvdia)
 

http://forums.techpowerup.com/showthread.php?t=69845

Cut from above link :

Very simple... when u select 8xAA in crysis.
For ati it loads 8xMSAA
and on nvdia it loads 4xMSAA & 8xCSAA.. its Nvdia trick... they spend a lot of money to make game developers support NV

You will find a file called FSAAProfilesDX10.txt and FSAAProfile.txt in config folder.
Delete both files and then you will notice, both cards will use MSAA

After deleting that file, you will not see 8xq 16x or 16xq
Even for Nvidia will only get 2x, 4x, 8x, which is real 8x MSAA.
now compair with ATI.
when that file is there. when you select 8x it lodes 8x msaa for ATI and lodes 4x msaa for Nvidia....

not only crysis... even in CMR grid you have simular file....

Lot of games in the market dose the same thing.. one other game is GRID. there are two files called hardware_settings_config.xml & Hardware-Settings-Options.xml and there you have same trick... and other files too


And when we do benchmarking. we should check using the MSAA to check the performance of the card. not CSAA or CFAA

CSAA nvidia
CFAA ATI

I tried this on my friends Nvidia and the first test was

Very High
8x AA which was using 4x sample and 8x quality
1280x720 and got 32 FPS

the same setting after using my file gave only 17FPS... he was shocked and started saying no i cannot accept this.. my card has a new technology and that is CSAA.. hehe

WHEN ONE CARD IS USING MSAA THE OTHER SHOULD USE THE SAME RIGHT
we cannot do racing with one car being a petrol and the other running in diesel

簡單翻譯:

nvidia 在 8X AA 的情況下偷降為 4X 來跑 ^^;

而且不是只有 Crysis.

GRID 這些遊戲都這樣搞.

這是買通遊戲開發商的結果. (開發商不配合是辦不到的)

反正4x、8x不仔細看的話
看不出來

所以NV就理所當然偷吃步?! :laugh:

NV的8X AA其實只比自己的4X AA好一點，並不會贏過ATi 4X AA太多
真正8X AA叫做8XQ

如果您玩賽車或FPS的話，不難看出來
特別是撞牆的時候....

還好耶

1920*1200.. :ase

我是看不太出來


對了 我是NV的卡 :flash:

那這樣的話時不是有和NV"合作"更動到的遊戲
最近所有測試 8X的張數都是不準的???

但ATI把"甜甜圈"降溫那件事也不是很光彩就是了.................

2邊都該打~

aa在高解析度環境下是不太明顯
理論上解析度夠高就不用aa
眼睛會自動把雜訊濾掉

我玩neverwinter2的時候，0AA和4AA感覺不出來差別

仔細看才看的到鋸齒

雖然高解析度鋸齒比較小
不過noaa和4aa還是有差

我是用22吋配合4aa 畫面才比較滑順