D26172: Add wp_viewporter support

davidedmundson added a comment.


  I don't see how the deleted things can work without glitching. I'm sure we'll end up needing to cache the sourceRect.
  
  Maybe Vlad can comment, effects are his area. In general +1.
  
  > Don't know a relevant effect working on QPainter backend.
  
  Right now there don't seem to be any. The raster based effects are pretty limited.
  Though if any do (or if any 3rd party effect does) we'll crash when we call surface()->

REPOSITORY
  R108 KWin

REVISION DETAIL
  https://phabricator.kde.org/D26172

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