D23495: Get output pixel size from output device

[Roman Gilg]

romangg created this revision.
romangg added a reviewer: KWin.
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REVISION SUMMARY
  Get the pixel size directly from the always available output device
  interface instead of saving an additional copy in the backends.

TEST PLAN
  Nested Wayland, Drm, virtual backends tested.

REPOSITORY
  R108 KWin

BRANCH
  outputDevicePixelSize

REVISION DETAIL
  https://phabricator.kde.org/D23495

AFFECTED FILES
  abstract_wayland_output.cpp
  abstract_wayland_output.h
  plugins/platforms/drm/drm_output.cpp
  plugins/platforms/drm/drm_output.h
  plugins/platforms/fbdev/fb_backend.cpp
  plugins/platforms/fbdev/fb_backend.h
  plugins/platforms/hwcomposer/hwcomposer_backend.cpp
  plugins/platforms/virtual/virtual_output.cpp
  plugins/platforms/virtual/virtual_output.h
  plugins/platforms/wayland/wayland_output.cpp
  plugins/platforms/wayland/wayland_output.h
  plugins/platforms/x11/windowed/x11windowed_output.cpp
  plugins/platforms/x11/windowed/x11windowed_output.h

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