[Mesa-dev] [Mesa3d-dev] mesa doesn't work with compiz (i965 + tips of all branches)

[Michel Dänzer]

On Don, 2010-07-01 at 10:32 -0700, Ian Romanick wrote: 
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> Note: I'm sending this reply to mesa-dev at lists.freedesktop.org instead
> of the old mailing list.
> 
> Maxim Levitsky wrote:
> > On Tue, 2010-06-29 at 15:49 -0700, Ian Romanick wrote:
> > Corbin Simpson wrote:
> >>>> Curious. Admittedly I can't look at the content of that commit, but they
> >>>> can't be too useless if compiz selects them. IIRC the point was to limit
> >>>> the runtime of Intel internal tests; can't those tests be amended
> >>>> instead? The number of configs will only grow; r300g has over 200 now
> >>>> thanks to multisampling.
> > The configs are useless.  Applications can only ask for "bits >= X".
> > There are still 24-bit depth / 8-bit stencil configs, and, last time I
> > checked, 8 >= 0.  There is no way to ask for a 24/0 config that wouldn't
> > instead give a 24/8 config.
> > 
> >>>> Posting from a mobile, pardon my terseness. ~ C.
> >>>>
> >>>>> On Jun 29, 2010 1:28 PM, "Maxim Levitsky" <maximlevitsky at gmail.com
> >>>>> <mailto:maximlevitsky at gmail.com>> wrote:
> >>>>>
> >>>>> On Tue, 2010-06-29 at 20:34 +0300, Maxim Levitsky wrote:
> >>>>>> On Sun, 2010-06-27 at 19:07 +0300, Maxim ...
> >>>>> Bisected this to
> >>>>>
> >>>>> 73e24cd5a7a0760726a681dda5b88805ddcf1555 is first bad commit
> >>>>> commit 73e24cd5a7a0760726a681dda5b88805ddcf1555
> >>>>> Author: Ian Romanick <ian.d.romanick at intel.com
> >>>>> <mailto:ian.d.romanick at intel.com>>
> >>>>> Date:   Mon Feb 8 10:34:52 2010 -0800
> >>>>>
> >>>>>    intel: Stop exposing useless 24 depth/0 stencil configs
> > I need two pieces of information:
> > 
> >   - A diff of the output of glxinfo immediately before and immediately
> >     after this commit.
> > 
> >   - A list of what config attributes compiz is requesting.  It should
> >     be easy enough to instrument choose_visual in glxcmds.c to dump out
> >     attribList.
> > 
> > It should be pretty easy to root-cause this problem with that data.
> 
> [snip]
> 
> > What is interesting is this:
> >
> > -0x62 32 tc  0 32  0 r  y  .  8  8  8  8  0 24  0  0  0  0  0  0 0 None
> 
> Yup.  That has to be it.  The fix will have two parts.  First, make the
> 3D driver a this specific visual.

-ENOPARSE :)

> That will make "new" 3D drivers work with "old" 2D drivers.  Second,
> make the 2D driver mark this visual has having stencil.

The X driver is no longer involved in GLX visuals. (However, the Mesa
driver loaded by the X server is involved. Maxim, did the X server load
your self-built i965_dri.so for each test?)

I think at least part of the problem could be that the X server code was
changed to make the depth 32 GLX visual take the place of one of the
depth 24 ones. It should probably become separate again.


-- 
Earthling Michel Dänzer           |                http://www.vmware.com
Libre software enthusiast         |          Debian, X and DRI developer