Halflife2's Temporal AA & Truform

[scarecrow1]

Has anyone (who owns a high end ATI card, i have an 9800XT)
been able to use Temporal Anti Aliaising and Trueform? do these options actually make a difference with the game? what about Temporal AA? i just remembered someone mentioning, before HL2 came out that TAA helps the game flow smoother due to a special form of using TAA that dosent slow down the computer. IS this true? i just turned Temporal AA on with 4x and i turned Truform onto apllication prefernce but im about to go to sleep and havent checked to see if it really makes a difference. Thats why i would like to know if anyone else has tried it and with what results!!

 

[Cypher19]

Truform I can't talk about.

Temporal AA just changes the sampling pattern the anti-aliasing uses every frame. You probably don't know what means, but basically when (and ONLY when) you're running at 60+fps the effective anti-aliasing doubles: 2x looks as good as 4x, 4x as good as 8x, 6x as good as 12x. That is all that TAA does, nothing more, nothing less.

 

[cadaveca]

Source supports TrueformII. I get a performance boost using Truform.

 

[czrsink]

Do you have to enable that through the ATI Control Panel?

 

[Lanthanide]

Temporal AA affects any and all games that have AA enabled (if set at application preference).

I've noticed that you can actually see a bit of blurry-ness when the FPS is around 60-70 on certain scenes. But once you get to about 80-90 it's hard to see. So don't enabled Temporal AA unless you know that you can get 80-90 FPS on games.

Basically you get the effect of 4x AA while only taking the performance hit of 2x AA, and the effect of 8x AA while only taking the performance hit of 4x AA. Etc. So it's a great idea, as long as you can sustain high frame-rates.

 

[Cole]

Truform is something with the graphics cards that helps improve lighting or something like that, and give speed increases.

In other words, it will not slow down your FPS, it will make your game look slightly better and have higher FPS, OPEN GL GAMES WILL HURT FROM THIS(Can cause screws up in graphics).

 

[LittleB]

Truform.

 

[Ahnteis]

Wha????!?!
Noooo. I don't think so.

Truform is an ATI specific thing. What it does is smooth out the corners of polygons so that models look less blocky. (I don't know if it tranforms the edges into splines, or the exact method it uses.) This is less of an issue today since games have much higher polygon models then previously.

It used to be implemented in hardware, but is now generally (always?) a software implementation and it will give you lower FPS (although it may be negligable). Models that are not optimized for truform may display bizarre bulges due to the smoothing process.

EDIT: Spelling typo

 

[Cole]

It used to be implemented in hardware, but is not generally (always?) a software implementation and it will give you lower FPS

According to what I know, all my DX games run a little faster with Truform on.

 

[scarecrow1]

ill try it