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Thread: MSAA Anti-Aliasing Finally Comes To Radeon R300g

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  1. #1
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    Default MSAA Anti-Aliasing Finally Comes To Radeon R300g

    Phoronix: MSAA Anti-Aliasing Finally Comes To Radeon R300g

    While the AMD Radeon "R300g" Gallium3D driver has been effectively "done" for a while, only this weekend has multi-sample anti-aliasing (MSAA) support come to this open-source graphics driver that supports the ATI Radeon X1000 (R500) GPUs and older hardware...

    http://www.phoronix.com/vr.php?view=MTI2Nzk

  2. #2

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    This is also only standard MSAA while the proprietary AMD and NVIDIA drivers with modern GPUs support much more advanced anti-aliasing (AA) methods.
    Gallium (including r300g) also supports MLAA.

  3. #3
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    I was just about to bring up MLAA. Can we get an update on the status of it?

  4. #4

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    Thanks Marek! I'll updated my PPA tomorrow and test on my RV530.

  5. #5
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    Default Test on a LiveCD?

    I have a RS690 (r400) that is unfortunately stuck on Windows right now. How long does piglet usually take to run? Any expected issues with running from a LiveCD?

    Is this the latest piglit website? http://people.freedesktop.org/~nh/piglit/

  6. #6

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    Quote Originally Posted by gQuigs View Post
    I have a RS690 (r400) that is unfortunately stuck on Windows right now. How long does piglet usually take to run? Any expected issues with running from a LiveCD?

    Is this the latest piglit website? http://people.freedesktop.org/~nh/piglit/
    Yes, download it with git and then see its README: http://cgit.freedesktop.org/piglit/tree/README

  7. #7
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    Quote Originally Posted by EmbraceUnity View Post
    I was just about to bring up MLAA. Can we get an update on the status of it?
    No changes w/ MLAA since the 8.0 release. The post-processing in general has had some small optimizations.

    The MLAA implementation is essentially complete, so there isn't really anything to change. New algorithms, like TXAA/FXAA could be added by someone interested as an alternative.

  8. #8
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    We can make MLAA a bit faster. There is some needless memory copying we can eliminate. However, MSAA will always give you higher quality.

  9. #9
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    The quality entirely depends on what you're looking at. MSAA will completely fail with transparent textures, for example.

    Do you mean the PP queue in the special case of only one filter, MLAA? That's not an extra copy, since we need to write to the same texture we're reading from, that's not possible without the copy (pp_run.c:56).

    Or do you mean some other part?

  10. #10
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    Quote Originally Posted by oibaf View Post
    Gallium (including r300g) also supports MLAA.
    Not really, most of the hardware covered by r300g can't do MLAA with the only exception being R500 hardware chips.

    For most people running r300g, MSAA would be their only option.

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