Messages in this thread | | | Subject | Re: radeon-pre-2 | From | Michel Dänzer <> | Date | Mon, 13 Sep 2004 12:29:46 -0400 |
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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 - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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