xorg HEAD + Mesa HEAD = boom

[Kristian Høgsberg]

Ian Romanick wrote:
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> Kristian Høgsberg wrote:
>> Benjamin Herrenschmidt wrote:
>>
>>> Haven't had time to investigate much yet (and probably won't for a
>>> couple of weeks) but with a build of today's CVS Mesa, r300 DRI, and X
>>> against that Mesa version (the whole lot), the server blows up right
>>> away when launching glxinfo or glxgears.
>>>
>>> The latest log I got (with glxgears) shows this backtrace:
>> It isn't clear from the stack trace what went wrong, but I've just
>> checked in a patch which fixes a few issues: GLcore needs to build with
>> TLS settings matching glx, the ARGB visual is now marked as
>> non-conformant, and there was a problem with freeing a mesa buffer even
>> if it never got allocated.
> 
> What is non-conformant about those visuals?

Maybe it's not non-conformance, but a driver bug instead.  The radeon 
driver panics and calls exit() if it sees a visual with no depth buffer 
(see the switch on line 175 in radeon_state_init.c).

Kristian