[Differential] [Request, 8 lines] D3504: Implment DRM EGL scaling

[davidedmundson (David Edmundson)]

davidedmundson created this revision.
davidedmundson added a reviewer: Plasma.
Restricted Application added a project: KWin.
Restricted Application added subscribers: kwin, plasma-devel.

REVISION SUMMARY
  We need to set the viewport so that we scale from device pixels to global compositor space.

TEST PLAN
  Ran kwin_wayland properly on my laptop without setting KWIN_COMPOSE.
  Most things worked.

REPOSITORY
  rKWIN KWin

REVISION DETAIL
  https://phabricator.kde.org/D3504

AFFECTED FILES
  plugins/platforms/drm/egl_gbm_backend.cpp

EMAIL PREFERENCES
  https://phabricator.kde.org/settings/panel/emailpreferences/

To: davidedmundson, #plasma
Cc: plasma-devel, kwin, lesliezhai, ali-mohamed, hardening, jensreuterberg, abetts, sebas
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