ATI/AMD's new Morphological Anti-aliasing

Discussion in 'Videocards - AMD Radeon Drivers Section' started by Darren Hodgson, Oct 22, 2010.

  1. Brad Grenz

    Brad Grenz New Member

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    MLAA is being produced in addition to whatever other AA mode you have selected. The setting doesn't override the othe MSAA settings in the control panel or in game. The game will render with whatever AA mode you've told it to and then the MLAA will go to work on that output. If you want to see the difference in performance between MLAA and other modes you have to set the regular MSAA to Application select and turn AA off in game. That will give you just the MLAA performance and image quality. From there you can decide what gives you the best image quality at an acceptable framerate. But if you have MSAA on and then you enable MLAA it will always make performance go down because you are making your vidcard do additional processing on each frame.
     
  2. Darren Hodgson

    Darren Hodgson Ancient Guru

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    Does it?

    I'm not saying you're wrong but my understanding was that MLAA is post-processing effect that is added by the driver AFTER the normal rendering has been done, which includes in-game AA if the game has it. In other words if I run a game with 4xMSAA enabled in the in-game settings with the MLAA option checked in the CCC then I'll get both MSAA *and* MLAA applied.
     
  3. rone

    rone Member Guru

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    How can you do that? Check "Use application settings"&"Morphological filtering" and not use AA in game settings.
     
  4. Valagard

    Valagard Guest

    Ok then, if that's the case, why is morph with 4xAA causing THAT big a performance hit?

    Everything we read says Morph AA should be a near 0% performance hit

    Have I run across a driver bug where if AA + Morph is enabled together you get a massive performance drop when Morph should be near performance free?
     

  5. Darren Hodgson

    Darren Hodgson Ancient Guru

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    Valgard - Some games just work better with MLAA than others.

    Lost Planet 2 DX9 with MLAA and 0xMSAA actually runs worst than with 0xMLAA and 8xMSAA on my PC. In some games I notice the performance hit of using MLAA and no AA more than I do just forcing MSAA, e.g. Darksiders, which runs at 60 fps on one GPU with 16xMSAA but drops to 40 fps with MLAA forced and no MSAA. I suspect that performance varies depending on how much MLAA is applied to the game. Games with intricate texture detail may just take longer to process.

    Generally, though the best results are with just MLAA enabled and no AA forced via the CCC or enabled in-game.
     
    Last edited: Oct 27, 2010
  6. evilfury

    evilfury Master Guru

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    Well MLA is not officialy supported for 5000 series, so some bugs should be expected.
     
  7. FDisk

    FDisk Master Guru

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    False advertising. Every game I tested MLAA alone is a bigger performance hit than 4xAA even.
     
  8. japamd

    japamd Ancient Guru

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    Who said MLAA should give near 0% performance hit?
     
  9. FDisk

    FDisk Master Guru

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    AMD did.
     
  10. japamd

    japamd Ancient Guru

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    Source?

    AFAIK MLAA is said to be no worse than CFAA Edge Detect, which we all know is no where near free, performance hit wise.

    From Anandtech

     

  11. Konrad321

    Konrad321 Banned

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    There's a big performance difference between Edge Detect and MLAA.
     
  12. Darren Hodgson

    Darren Hodgson Ancient Guru

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    Kind of an odd quote that because I've certainly never found Edge Detect AA to be fast. Usually it incurs a heavy performance hit in modern games and is only handy for older less demanding games such as, for example, OutRun 2006: Coast 2 Coast. MLAA on its own seems less demanding than 12xEDAA from personal testing.
     
  13. FDisk

    FDisk Master Guru

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    Actually I take it back. What they said is this.
    "Faster than super-sampling"
     
    Last edited: Oct 27, 2010
  14. Konrad321

    Konrad321 Banned

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    MLAA is much more performance hungry than Edge Detect and MSAA.
     
  15. FDisk

    FDisk Master Guru

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    Anyway, I came to conclusion it's only good if your game does not support Regular AA modes at all but can be forced to use MLAA.
    If you can use Regular AA modes, use them! They look much better and perform faster.
     

  16. Phyxion

    Phyxion Banned

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    Even though you already took it back, MLAA might in some cases have a near zero inpact, but every filter or other stuff you do will cost at least something, there is no such thing as free stuff with postprocessing filters.
     
  17. nzweers

    nzweers Master Guru

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    Except for Starcraft 2 :

    [​IMG]
     
  18. isidore

    isidore Ancient Guru

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    GTA 4 runs great with MLAA and looks quite good:

    Statistics
    Average FPS: 40.93
    Duration: 37.33 sec
    CPU Usage: 68%
    System memory usage: 77%
    Video memory usage: 94%

    Graphics Settings
    Video Mode: 1680 x 1050 (60 Hz)
    Texture Quality: High
    Shadow Quality: High
    Reflection Resolution: Very High
    Water Quality: Very High
    Texture Filter Quality: Anisotropic x16
    Night Shadows: Medium
    View Distance: 50
    Detail Distance: 50

    Hardware
    Microsoft Windows 7 Ultimate

    Video Adapter: ATI Radeon HD 5800 Series
    Video Driver version: 8.17.10.1047
    Audio Adapter: Speakers (SB Audigy LS)
    Intel(R) Core(TM)2 Quad CPU Q8300 @ 2.50GHz
     
  19. evilfury

    evilfury Master Guru

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    Post some screenshots isidore. I would like to see. If possible screen without MLA and with it.
     
  20. Konrad321

    Konrad321 Banned

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