My first DontZap use case while testing F11 beta

[Adam Jackson]

On Wed, 2009-04-08 at 16:54 +0200, Ralf Ertzinger wrote:
> Hi.
> 
> On Wed, 08 Apr 2009 09:28:06 -0400, Adam Jackson wrote:
> 
> > Yes, broken hardware.  There's a 2048 pixel limit we're not letting
> > you exceed by default because 3d breaks if you do.
> 
> Is there a way to change this on the fly? E.g. could I press a "I don't
> care"-button in gnome-display-settings, and get the larger screen size?
> (bonus points for enabling 3D again when the virtual size shrinks below
> 2kx2k again)

I was talking this over with Kristian actually.  Since we allocate the
front buffer dynamically for KMS, we could probably let the maximum
virtual size be 4k or so (which I think really is the 2d limit).  In
principle, well-behaved GL apps are supposed to check the
GL_MAX_VIEWPORT_DIMS limit, since that's the maximum window size that's
expected to work.  So if compiz were well-behaved, it would refuse to
run if the root window were larger than that.

Whether compiz actually _does_ that is another question, of course.  But
I think changing the max virtual to 4k for intel 915 and 945 might be a
less bad set of tradeoffs.

- ajax
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