Eric Anholt <> writes:

> glFlush by the spec does (not) provide any guarantees that things have
> made it to the kernel.  We have just assumed that, but I think the
> Radeon driver may be violating that assumption these days.

I'd say the radeon driver needs fixing then; we really don't have any
other API we can use to get pixmap updates delivered before the event is
sent. Adding glFinish here is a terribly blunt instrument for such a
frequent operation.


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