D18810: [platforms/hwcomposer] Add scaling support

romangg added a comment.


  One thing we should keep in mind: at some point we want multi-screen support on Plasma Mobile / convergence. For that we will probably just use KScreen as well.
  
  So we don't want to hard-code the output values via config files and so on. In DRM backend we have this `readOutputsConfiguration()` method and this is used by PlaMo in some way? But long-term it should go away. The DRM driver should provide the available modes and per default KWin picks the best suited one.
  
  Instead of setting the internal scale value and so on to something fixed what we want in hwcomposer is a way to tell KWin the display characteristics and available modes (probably only one), if libhybris does not provide that. Then we can use KScreen at one point here as well.

REPOSITORY
  R108 KWin

BRANCH
  master

REVISION DETAIL
  https://phabricator.kde.org/D18810

To: davidedmundson, #kwin, romangg
Cc: bshah, romangg, nicolasfella, zzag, kwin, jraleigh, GB_2, mkulinski, ragreen, jackyalcine, Pitel, iodelay, bwowk, ZrenBot, ngraham, alexeymin, lesliezhai, ali-mohamed, hardening, jensreuterberg, abetts, sebas, apol, mart