[PULL xserver 1.10] GLX backport

[Ian Romanick]

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On 04/05/2011 11:15 AM, Jeremy Huddleston wrote:
> There is still a ton of fat left in there... but most of the fat is
> rather benign (whitespace, deleting dead code, etc), so I don't have
> a problem with it if it's part of the whole package.
> 
> What I do have a problem with is the fragility of GLX.  This has
> traditionally been one of the more sensitive areas of the server, and
> IIRC both 1.7 and 1.8 saw regressions introduced because of changes
> in GLX.  I'd prefer to merge something like this in before an RC1 to
> get the most exposure possible.

Eric and I have been talking about this a lot lately.  The big problem
is that we have basically no regression tests for GLX.  Until recently,
when failures have been found we haven't made tests that reproduce them.

Do we have a list of the failures from 1.7 and 1.8?  It's never too late
to make regression tests for old failures. :)

> How would you feel about sitting on this until after 1.10.1 is out?
> If there is a pressing reason why this should be part of 1.10.1 (such
> as fixing clutter failures that were not in 1.9.5), then I'll
> certainly consider merging it for RC2 and pushing out 1.10.1 by a
> allow more time for testing feedback.
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