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Does fglrx support render acceleration?

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  • Does fglrx support render acceleration?

    Apparently the lack of render acceleration is the main culprit behind my Xorg (Fedora 7) 2D desktop (no beryl/compiz or compositing going on) just not being that "snappy" -- compared to an NVidia card or the same Radeon in Windows.

    I have a 9800XT.

    Does anyone know if the fglrx supports RENDER acceleration? ("RenderAccel")

    The open source driver does not support it on the 9500/9700 cards and above unfortunately.


  • #2
    the oss should support it according to the official blog
    (see: )
    the fglrx supports it too, including aiglx from the 8.42.3 release.
    in older releases for compiz/beryl you would have had to use xgl.
    to enable rendering in xorg use:

    Option "RenderAccel" "true"
    in your

    Section "Extensions"
    Option "DAMAGE" "true"
    Option "RENDER" "true"
    Option "Composite" "Enable"
    this things have been covered a lot in the 8.42 thread in this forum and get out if you take the time to make a search on this forum.

    from the last 2 releases of the fglrx (8.41.7 and 8.42.3) the performance of the ati boards aren't too far away from windows and from nvidia boards. for a comparison see this article:
    where the fglrx 8.42.3 with a hd2900 performs about 20% better than the driver in windows vista.


    • #3
      Render is there by default and the option RenderAccel is not needed/used at all.

      Most of such info is in your Xorg.0.log:

      (II) Initializing built-in extension RENDER
      (WW) fglrx(0): Option "RenderAccel" is not used


      • #4
        I would never use RENDER true, because thats for emulation only. Speed is extra low.