https://bugs.freedesktop.org/show_bug.cgi?id=100262
--- Comment #2 from [email protected] ---
(In reply to Tim Rowley from comment #1)
> Not seeing a hang here, but a transparent area where the OpenGL should be
> rendered to.
>
> what version of Mesa and Qt were you using?
>
> If you don't mind running an experiment, could you try setting
> KNOB_MAX_WORKER_THREADS=4 in the environment before running hellogl2? This
> will stop swr from binding threads which might possibly be confusing Qt's
> internal threading.
Hi Tim!
I tested on Qt 4.8.6 and 5.6.1, both cause a hang for me using the SWR driver
on Mesa 13.0.1 and 13.0.5
Setting the MAX_KNOB_WORKER_THREADS=4 seems to correct the issue!
Can you tell me if this is a permanent fix? Also does this need to change with
the number of CPUs available? I have field deployments experiencing these
issues.
Thanks!
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