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    SubjectRe: radeon-pre-2
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    On Mon, 2004-09-13 at 02:05 -0400, Alex Deucher wrote:
    > On Sun, 12 Sep 2004 20:45:18 -0400 (EDT), Vladimir Dergachev
    > <volodya@mindspring.com> wrote:
    > >
    > >
    > > On Sun, 12 Sep 2004, Michel [ISO-8859-1] D�nzer wrote:
    > >
    > > > On Sun, 2004-09-12 at 23:42 +0100, Dave Airlie wrote:
    > > >>
    > > >> I think yourself and Linus's ideas for a locking scheme look good, I also
    > > >> know they won't please Jon too much as he can see where the potential
    > > >> ineffecienes with saving/restore card state on driver swap are, especailly
    > > >> on running fbcon and X on a dual-head card with different users.
    > > >
    > > > Frankly, I don't understand the fuss about that. When you run a 3D
    > > > client on X today, 3D client and X server share the accelerator with
    > > > this scheme, and as imperfect as it is, it seems to do a pretty good job
    > > > in my experience.
    > >
    > > Not that good - try dragging something while a DVD video is playing.
    >
    > The overlay could be converted to use the CP engine as well. right now
    > it has to switch to MMIO for overlay.

    The question is whether that matters at all, i.e. whether the registers
    used for the overlay are FIFO'd.

    Either way, I don't see how this is related to the way DRM context
    switches are handled.


    --
    Earthling Michel Dänzer | Debian (powerpc), X and DRI developer
    Libre software enthusiast | http://svcs.affero.net/rm.php?r=daenzer
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