Experimental options

[Michel Dänzer]

On Mon, 2004-12-13 at 21:15 -0500, Alex Deucher wrote:
> On Mon, 13 Dec 2004 20:23:27 -0500 (EST), Vladimir Dergachev
> > 
> > On Mon, 13 Dec 2004, Alex Deucher wrote:
> > 
> > > On Mon, 13 Dec 2004 18:53:36 -0500 (EST), Vladimir Dergachev
> > > <volodya at mindspring.com> wrote:
> > >>
> > >> On Mon, 13 Dec 2004, Ian Romanick wrote:
> > >>
> > >>> 1. Should the DDX use the DRM to assist with 2D acceleration?
> > >>
> > >> They already do, at least all radeons. Or maybe I misunderstood your
> > >> question ?
> > >>
> > >
> > > well, the drm is only used if 3d is enabled.  but if you don't have
> > > enough ram for 3d or you don't want to use the dri, the driver falls
> > > back to MMIO.  It'd be nice to use the drm for 2d all the time
> > > assuming the drm is available for your platform.
> > 
> > I admit I don't know the dri code that well, but it seemed to me that
> > depth buffer (for instance..) was allocated dynamically in a function
> > that allocates context, right ?
> 
> no, the back and depth buffers are allocated statically when the server starts.

No, they aren't. Obviously though, 3D acceleration isn't enabled if they
can't fit into the available memory.


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