GRID和Crysis 8XMSAA 真相(ati ＆nvdia)

mawen1250

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 MSAA 的情況下偷降為 4XMSAA（+8XCSAA） 來跑 ^^，效果位于4XMSAA和8XMSAA之间，提高了幀數;

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)

[ 本帖最后由 mawen1250 于 2008-8-30 14:15 编辑 ]

mawen1250

我们知道，Nvidia财大气粗，自上回刺客10.1事件曝光之后，一名国外玩家偶然在Crysis（孤岛危机）中也发现了一些“小秘密”。

当我们在游戏的抗锯齿选项中选择8xAA时，对于ATI的显卡，Crysis将会采用未曾优化的8x MSAA模式进行采样；而Nvidia的显卡则会受到了格外的礼遇，游戏将会以4x MSAA + 8x CSAA的仿8xAA优化模式进行采样。这位玩家指出，当他尝试使用朋友的Nvidia显卡在“Very High 8xAA 1280X720“模式下进行游戏时可得到32FPS的成绩，而更改配置文件令N卡同样工作在8x MSAA模式下只能拿到17FPS。

Crytek故意不在游戏中加入ATI自家的抗锯齿技术CFAA很显然是出自Nvidia的授意，目的是令竞争对手的产品无法发挥真正功效，从而在游戏中表现不佳，类似的情况也发生在与Nvidia关系暧昧的赛车游戏GRID里面

wangjun870812

激烈的竞争社会啊.

这样搞总是会被人发现的,等发现的时候在发现丢人了

已经收不回了,何必呢.

qq67256458

NVIDIA最近怎么搞的， 老是出问题。。。。。

JIMMY来也

NVIDIA就是恶心。。。吗比。。。看n就想吐

JIMMY来也

NVIDIA就是恶心。。。吗比。。。看n就想吐

jinhey

NVIDIA

lulupk360

从NVIDIA控转化为ATI控的人路过。。

lampuiho

我換了底版就會買ATI 的卡了 HAHA

帆1

A卡便宜，适合我们这种穷人