For the record, these people seem to be doing fine with Intel cards
and VirtualGL:

http://trac.nchc.org.tw/grid/wiki/VirtualGL_UsageNote



2009/11/22 Jose Rodriguez <josec.rodrig...@gmail.com>:
> 2009/11/22 DRC <dcomman...@users.sourceforge.net>:
>> OK, so perhaps I should have said it doesn't have "full 3D
>> acceleration", but the result is the same.  Most built-in Linux drivers
>> are "2.5D" accelerated at best.
>>
>> Let me put this another way-- the 3D driver must support Pbuffer-enabled
>> FB configs in order to work in a VirtualGL server.  NVIDIA and ATI
>> boards using the respective drivers from those vendors are the only
>> configurations that are known to support Pbuffer-enabled FB configs.
>> Thus, these boards are the only ones known to work in a VirtualGL
>> server.  If you discover another configuration that works, let us know
>> about it, and I'll be glad to update the docs to reflect this.
>>
>> Most likely, Mesa is reporting that GLX_SGIX_pbuffer is available, but
>> it isn't actually implemented in the underlying driver.  I've seen that
>> before.
>
> OK, understood. I will perform the definite test with my ATI powered
> machine and both fglrx and radeon drivers. I guess I'll file a bug in
> the appropriate place if indeed fglrx works while radeon doesn't.
>
> Regards
>
> Jose
>

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