[Mesa-dev] [Bug 77208] VdpPresentationQueueGetTime does not return a monotonic time

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=77208

Christian König <deathsimple at vodafone.de> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |DUPLICATE

--- Comment #2 from Christian König <deathsimple at vodafone.de> ---
That's a known issue, it's a design problem of DRI2.

Essentially there is no global time you could return from
VdpPresentationQueueGetTime. Instead what you return is always the an
estimation based on the vsync counter and that's unfortunately per output
instead of global.

Additional to that I never bothered adding the difference between the last flip
and the current time to the result of VdpPresentationQueueGetTime. So when you
don't have a page flip the result of VdpPresentationQueueGetTime will probably
stand still.

*** This bug has been marked as a duplicate of bug 66384 ***

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