direct rendering .. help please

[Alex Deucher]

On Tue, 15 Mar 2005 14:28:21 +0100, Roland Scheidegger
<rscheidegger_lists at hispeed.ch> wrote:
> Michel Dänzer wrote:
> > On Fri, 2005-03-11 at 23:58 +0100, Roland Scheidegger wrote:
> >
> >>>If I use the mesa libs of the Xorg CVS tree, I got a mismatched
> >>>version of DDX. How can I try to disable the color tiling?
> >>
> >>Option "ColorTiling" "false" should do the trick (it's in the radeon
> >>manpage). Of course you'll miss all recent (and not-so-recent) driver
> >>changes.
> >
> >
> > BTW, I think it's a bit unfortunate to say the least that with current
> > X.org CVS, the 2D and 3D drivers don't work together by default,
> > especially as the failure mode is very non-obvious (I think you only get
> > 'libGL warning: 3D driver returned no fbconfigs.' without LIBGL_DEBUG)
> > Maybe colour tiling should default to off until the 3D driver in the
> > tree supports it?
> You're not the first to mention this. I discussed it briefly on IRC when
> I commited the tiling support what to do wrt to the xorg Mesa tree, and
> the conclusion was to not bother. The 3d driver in the xorg tree is not
> expected to ever support it, and people should move away from using it.
> This would be unacceptable for a release of course, but it's expected
> that people using xorg cvs can just as well use mesa cvs too.
> It's unfortunate the error you get isn't obvious at all (even with
> LIBGL_DEBUG=verbose you only get an additional ddx version mismatch
> apart from the no fbconfigs warning), but I couldn't find a way how
> you'd output a more sane error message.
> If you disable it by default, noone will test or use it. Is it really
> important the xorg dri driver works by default (in cvs)?

I don't think so.  cvs HEAD is the development branch and the latest
mesa will be separate/merged in for the next release anyway.  I say
leave tiling enabled.  If you don't know what you are doing use 6.8.x.

Alex

> 
> Roland