[Piglit] [PATCH 2/2] glx: Replace glFlush calls with glFinish

[Eric Anholt]

Marek Olšák <maraeo at gmail.com> writes:

> I think glFenceSync+glFlush in one context and glWaitSync (server-side
> synchronization) in the other context would be the best solution. It
> shouldn't block the CPU, but it should set the right ordering of
> commands. glFinish seems to be overkill.

Sounds great for an ARB_sync test, which we're terribly short on, but
this isn't that.
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