D8645: [platforms/drm] Determine the supported transformation on a plane

[Martin Flöser]

graesslin marked 2 inline comments as done.

REPOSITORY
  R108 KWin

REVISION DETAIL
  https://phabricator.kde.org/D8645

To: graesslin, #kwin, #plasma, subdiff
Cc: broulik, plasma-devel, kwin, bwowk, ZrenBot, progwolff, lesliezhai, 
ali-mohamed, hardening, jensreuterberg, abetts, sebas, apol, mart