[Mesa-dev] [PATCH] present: Send GLX_BufferSwapComplete events from present extension

Keith Packard keithp at keithp.com
Mon Nov 25 18:39:33 PST 2013

Eric Anholt <eric at anholt.net> writes:

> There's a minor behavior change that the event now gets sent to the
> drawable owner rather than the caller of DRI2SwapBuffers.

Yeah, probably not ideal, especially when the GLX drawable is created
using the window XID (as is the case for some older GLX clients). I
don't have the original client at the time the event is generated, but I
think I can go back and stick it in; will require tracking when the
client exits, of course.

> I don't expect it to matter in practice (I expect that the
> swap-requesting client using this GLX extension is also the
> drawable-creating one), and either choice seems wrong compared to "send
> the event to everyone listening for the event on this drawable".  That
> would be a separate change, anyway.

I think the original behaviour, sending the event to the client who sent
the PresentPixmap request is the only sane plan, and only a bit more
complicated than sending it to the drawable owner.

I'll cook up an alternate patch and send that along; we can then compare
the two approaches at least.

keith.packard at intel.com
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