D23514: [platforms/x11] Never block on retrace, always present after paint

[Vlad Zahorodnii]

zzag added a comment.


  > Not syncing to vblank is not per se a performance issue as in lower framerate. It just means the latency is not optimized.
  
  Without syncing to vblank our timings will be off. It's possible that we may start compositing right before the upcoming vblank and thus miss it.

REVISION DETAIL
  https://phabricator.kde.org/D23514

To: romangg, #kwin
Cc: zzag, alexeymin, kwin, LeGast00n, The-Feren-OS-Dev, sbergeron, jraleigh, fbampaloukas, GB_2, mkulinski, ragreen, jackyalcine, iodelay, crozbo, bwowk, ZrenBot, ngraham, himcesjf, lesliezhai, ali-mohamed, hardening, romangg, jensreuterberg, abetts, sebas, apol, ahiemstra, mart
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