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Texture Transparency Anti-Aliasing: 1680x1050

Anti-Aliasing Analysis, Part 2: Performance
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Unexpectedly, supersampling TrAA appears to have less of a relative impact than standard multi-sample AA at the higher resolution. This is great news! The lone exception is with the dual-card SLI configuration, which is clearly not optimized for TrAA.

Now let’s consider the less-reliable transparent anti-aliasing modes:

Indeed, all of the transparent modes seem to work more efficiently relative to pure MSAA as the resolution goes up. We weren't anticipating this, but we're happy to see it. We can’t wait to see what happens at 1080p!

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  • 8 Hide
    compton , November 21, 2011 4:25 AM
    This series is one of the best. The first article was most illuminating, and the second keeps it coming. Before the first article I was clueless to nVidia's AA nomenclature. Now it makes much more sense, and I applaud nVidia for not making the situation worse (though nVidia and AMD need nomenclature help in other areas still).

    I'm not a huge gamer and the games I do play mostly run awesome with my 2500K + GTX460. I decided that if it's going to be a while before the next generation of GPUs drop, I'd get another 460. So that's what I did, should be here in a few days. I was worried that even at 1920x1200 I'd have problems with AA and the lack of VRAM, but it's good to see that two 460s work pretty admirably.

    As an aside, I'm totally on an efficiency kick, and I don't relish the thought of needing two cards to get decent performance, but the GTX 460 is one of the most efficient cards around well over a year after it's release.
  • 3 Hide
    Zeh , November 21, 2011 9:17 AM
    What happened to Morphological AA? When the 6000 series was released, Morph AA showed an impressively low demand on hardware - about 2 or 3 fps lost -, and now it's cutting frame rates in half?

    Seriously, what is it?
  • 2 Hide
    jemm , November 21, 2011 10:06 AM
    Great article! Very ilustrating!
  • 0 Hide
    Anonymous , November 21, 2011 11:25 AM
    This article is going to have me diving into my settings tonight, I've basically set my aged 5770 to run as poorly as possible given I game at 1920x1200 :/  Learn something new every day ;) 
  • 4 Hide
    ojas , November 21, 2011 11:51 AM
    ZehWhat happened to Morphological AA? When the 6000 series was released, Morph AA showed an impressively low demand on hardware - about 2 or 3 fps lost -, and now it's cutting frame rates in half?


    Was thinking the same thing....part 1 and part 2 are contradicting each other hear...if i'm remembering part 1 correctly...

    btw there's a typo at the start of page 2,
    Quote:
    This is because the GT 420 is not DirectX 11-capable
  • 5 Hide
    cleeve , November 21, 2011 12:42 PM
    ZehWhat happened to Morphological AA? When the 6000 series was released, Morph AA showed an impressively low demand on hardware - about 2 or 3 fps lost -, and now it's cutting frame rates in half?Seriously, what is it?


    On release we tested StarCraft II because that was a game that choked with MSAA on Radeons. It turns out, that game is severely CPU limited, so it wasn't the best test subject for Morphological AA
  • 1 Hide
    MauveCloud , November 21, 2011 12:50 PM
    I don't like these animated gifs for comparing anti-aliasing modes, because 1. gifs are limited to 256 colors, 2. moving around in a game will affect how noticeable the differences in quality between different anti-aliasing modes are. (so will the physical size of the pixels, but that would probably be impractical to represent when viewed on other monitors). Would it be possible to get some animations that show antialiasing modes side-by-side (or half and half) while moving around in some of these games, instead of just fixed-position images that cycle between anti-aliasing modes?
  • 4 Hide
    cleeve , November 21, 2011 2:32 PM
    MauveCloudI don't like these animated gifs for comparing anti-aliasing modes, because 1. gifs are limited to 256 colors, 2. moving around in a game will affect how noticeable the differences in quality between different anti-aliasing modes are.


    As for #2, there's no worries as the Half Life 2 engine in Lost Coast that we used for the majority of comparison shots doesn't move the camera during idle times. We used a save game and reloaded the scene at exactly the same position, so its not an issue here.

    As for your first concern, I was worried about that, too, at first. But I carefully scrutinize the uncompressed TIFF files before exporting them to GIF and in these cases there's no practical difference, it does an excellent job of demonstrating the result with different AA modes.
  • 0 Hide
    wolfram23 , November 21, 2011 2:35 PM
    Very interesting article! Although I'm a tad confused by your nomeclature of the Radeon AA settings. There's MSAA, AMSAA, SSAA, and within those you can choose box, narrow tent, wide tent, and edge detect types (edge being the only one AFAIK to increase demand), and then on top of that you can enable Morphological. So, I'm not sure what "EQ" means as it is not at all a term used by Radeon (or at least CCC).

    Also, as the first poster said, why is morphological so demanding all of a sudden? When I first tried using it, I barely saw an impact on performance and in a couple games it made everything look blurry. I just tried enabling it in Skyrim (a game that really needs better AA) and my performance plummeted - which these results confirm. What changed?
  • 2 Hide
    cleeve , November 21, 2011 2:44 PM
    wolfram23 So, I'm not sure what "EQ" means as it is not at all a term used by Radeon (or at least CCC).


    As it says in the article, EQAA is Radeon HD 6900-series exclusive. You probably don't have a 6900 card.

    wolfram23Also, as the first poster said, why is morphological so demanding all of a sudden?


    The answer is 5 posts above this comment. :)  Depends on the game, you may have been using a CPU-bottlenecked title.
  • 0 Hide
    Anonymous , November 21, 2011 2:47 PM
    I wish for a DX10 card, they would have thrown in a card a lot of us probably have/had, like a GTX260.
  • 0 Hide
    mt2e , November 21, 2011 4:12 PM
    I must say the animated GIFs are pro status....I wanna see a giant GIF with all modes compared....like a gradual no AA to MAX aa...I know there are tons of modes but that is just the "jist" of the idea.
  • 1 Hide
    cleeve , November 21, 2011 4:41 PM
    mt2eI must say the animated GIFs are pro status....I wanna see a giant GIF with all modes compared....like a gradual no AA to MAX aa...I know there are tons of modes but that is just the "jist" of the idea.


    Check our AA Analysis Part 1 article, lots more comparisons there:

    http://www.tomshardware.com/reviews/anti-aliasing-nvidia-geforce-amd-radeon,2868.html

  • 0 Hide
    pdxoutdoors , November 21, 2011 5:54 PM
    Great article.

    FYI, typo in first paragraph, "the image quality the impart" (should be "they")
  • 0 Hide
    yyk71200 , November 21, 2011 6:28 PM
    Also, if you download NVidia inspector, you can use Sparse Grid SS Transparency AA (doesn't work in all games). Looks better than regular Transparency SS AA but even more demanding. It is not available in the normal control panel.
  • 0 Hide
    DXRick , November 21, 2011 7:14 PM
    Interesting, but the 450px × 448px images are too small for me to see the differences well.
  • 0 Hide
    MauveCloud , November 21, 2011 7:45 PM
    CleeveAs for #2, there's no worries as the Half Life 2 engine in Lost Coast that we used for the majority of comparison shots doesn't move the camera during idle times. We used a save game and reloaded the scene at exactly the same position, so its not an issue here.


    You misunderstand my concern here. I'm not talking about whether the screenshots are in the same position. I'm talking about users actually moving around in the game (it's not common when actually playing any of these games to stay in one place for long, right?) and whether the qualitative differences between antialiasing modes are still as noticeable while moving.
  • 0 Hide
    cleeve , November 21, 2011 8:45 PM
    MauveCloud whether the qualitative differences between antialiasing modes are still as noticeable while moving.


    Ah. Well for that you should try it out. in my experience the stills represent what happens in-game quite well, except when it comes to post processing effects like Morphological and FXAA. Those tend to crawl because the filer re-assesses each frame independently, it's not based on the same geometric data like MSAA.
  • 2 Hide
    cleeve , November 21, 2011 8:46 PM
    DXRickInteresting, but the 450px × 448px images are too small for me to see the differences well.


    It's 1 to 1, so if you can't see a difference there, you won't see it in game.
  • 0 Hide
    cleeve , November 21, 2011 8:48 PM
    pdxoutdoorsGreat article.FYI, typo in first paragraph, "the image quality the impart" (should be "they")


    Thx, fixed!
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