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Tiling Support For AMD's RadeonSI Gallium3D Driver

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  • Tiling Support For AMD's RadeonSI Gallium3D Driver

    Phoronix: Tiling Support For AMD's RadeonSI Gallium3D Driver

    As a potential performance-boosting addition, the "RadeonSI" Linux driver for open-source support of the AMD Radeon HD 7000/8000 series graphics cards now has patches for supporting tiling...

    http://www.phoronix.com/vr.php?view=MTM0Mjk

  • #2
    Hi people.
    Do these patches also affect 2d performance? I have a HD 7870 card and the 2d performance using glamor is not good at all.

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    • #3
      Originally posted by sasy360 View Post
      Hi people.
      Do these patches also affect 2d performance? I have a HD 7870 card and the 2d performance using glamor is not good at all.
      Really? I don't have an SI, but the radeon 5400 in my work machine using glamor was acceptable. How do you define not good?

      Also, just as background, could you post your xorg.log, dmesg, and glxinfo output somewhere (such as pastebin) and link it here?
      Last edited by Veerappan; 04-04-2013, 10:16 AM.

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      • #4
        The 7xxx driver is probably still imature. I think tiling mostly affects textures where effects has to be applied. But it could provide some speed up for desktop use.

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        • #5
          lol

          I actually had a bug open on this:

          https://bugs.freedesktop.org/show_bug.cgi?id=62889

          Glad to hear it's getting fixed!

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          • #6
            Is there any PPA or something to easily test the radeonsi driver(s)?

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            • #7
              Originally posted by sasy360 View Post
              Hi people.
              Do these patches also affect 2d performance? I have a HD 7870 card and the 2d performance using glamor is not good at all.
              Unlikely. It might even slow down rendering overall, because software fallback paths are slower due to untiling and retiling required for CPU access.

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              • #8
                Originally posted by Asariati View Post
                Is there any PPA or something to easily test the radeonsi driver(s)?

                Prob not. I'm running ArchLinux so it is fairly easy with AUR

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                • #9
                  Originally posted by Veerappan View Post
                  Really? I don't have an SI, but the radeon 5400 in my work machine using glamor was acceptable. How do you define not good?
                  Scrolling pages in Firefox and Chromium is slow. When scrolling fast enough, it creates a visible horizontal tearing in the page. Even selecting a block of text using mice is a bit laggy. Artifacts.

                  Also, just as background, could you post your xorg.log, dmesg, and glxinfo output somewhere (such as pastebin) and link it here?
                  Sure.
                  Xorg log http://pastebin.com/cCNMxrsF
                  glxinfo http://pastebin.com/eMYfNuZh
                  dmesg http://pastebin.com/4Vz8GAt2

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