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Radeon R600 Tiling Patches Are Ready

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  • Radeon R600 Tiling Patches Are Ready

    Phoronix: Radeon R600 Tiling Patches Are Ready

    Jerome Glisse, the Red Hat developer commonly working on the open-source Radeon graphics driver, has announced that he believes the R600 Gallium3D tiling support is complete...

    http://www.phoronix.com/vr.php?view=MTA1MjY

  • #2
    Awesome!

    I can't wait to see benchmarks about this interesting feature Thank you Jerome Glisse!

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    • #3
      This is just fantastic! All Linux Radeon users thank you, Jerome
      Have a nice break, and please do HiZ if it is your domain. Thanks.

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      • #4
        > The ColorTiling2D option though still needs to be enabled within the xorg.conf for proper support.

        How to enable it? Which option must be added to xorg.conf?

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        • #5
          Originally posted by Drago View Post
          Have a nice break, and please do HiZ if it is your domain. Thanks.
          That would be great! For those who don't know what HiZ stands for, it means Hierarchical Z-Buffer. There is some code to support this feature, but it's stuck since August as you can see here and according to freedesktop's bug report it doesn't work.

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          • #6
            https://bugs.freedesktop.org/show_bug.cgi?id=36602

            Hi-Z seems stalled unfortunately
            ## VGA ##
            AMD: X1950XTX, HD3870, HD5870
            Intel: GMA45, HD3000 (Core i5 2500K)

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            • #7
              3.4 is a long wait.

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              • #8
                Originally posted by ormaaj View Post
                3.4 is a long wait.
                This is a large patch, and 3.3 merge windows is closed. I wish it could be faster

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                • #9
                  Is there a recommended kernel branch that contains radeon work but maybe not potentially new unstable kernel features, radeon-drm-testing perhaps? Or should we just use master?

                  Latest git of mesa, xf86-video-ati and libdrm isn't much of a problem, but the kernel...

                  Also, why a xorg.conf setting? Would that be different from R600_TILING=1?

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                  • #10
                    The patches are easy to apply, and they work so well that I can use them with Star Trek Online running under wine with an evergreen card. It improves performance a great deal and actually reduces stalling significantly (one of the previous issues I was having is that it was "choppy", but not with 2d tiling).

                    Great work, Jerome! Truly one of the better things to hit r600g in a LONG time.

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