Bug#556541: xserver-xorg-video-intel: Blank screen with OGRE programs

[Julien Cristau <jcristau@debian.org>]

tag 556541 confirmed fixed-upstream
kthxbye

On Mon, Nov 30, 2009 at 15:46:38 +0100, Julien Cristau wrote:

> On Mon, Nov 30, 2009 at 14:11:11 +0000, Sam Morris wrote:
> 
> > On Mon, 2009-11-30 at 14:32 +0100, Julien Cristau wrote:
> > > Any chance you could try with an updated mesa?  Say upstream 7.6 or 7.7
> > > branch?
> > > If that doesn't help we probably need to report this upstream
> > > (instructions at http://intellinuxgraphics.org/how_to_report_bug.html).
> > 
> > I'm already using 7.6. Are there packages of 7.7 anywhere, or is it
> > possible/easy to build mesa 7.7 and use it with LD_LIBRARY_PATH or some
> > similar method?
> > 
> The mesa_7_6_branch has had a lot of fixes since the 7.6 release so
> could be a fix there.  In any case, it should be possible to build from
> git and then set LIBGL_DRIVERS_PATH to point where the new
> i9[16]5_dri.so (I don't remember which you use) driver was built.
> 
In particular, [1] seems to point at this commit[2] which went in
between 7.6 and 7.6.1-rc1:

commit a82da7fa263c7fb6b902285994136890e6dc3278
Author: Eric Anholt <eric@anholt.net>
Date:   Sun Oct 11 11:04:09 2009 -0700

    i965: Fix the bounds emitted in the vertex buffer packets.
    
    It's the address of the last valid byte, not the address of the first
    invalid byte.
    
    This should also fix problems with rendering with the new sanity checks in
    the kernel.

[1] http://mid.gmane.org/87y6londpv.fsf@gaiman.anholt.net
[2] http://cgit.freedesktop.org/mesa/mesa/commit/?id=a82da7fa263c7fb6b902285994136890e6dc3278

Cheers,
Julien