[Differential] [Request, 55 lines] D3396: Move querying the egl extensions into the AbstractEglBackend

[graesslin (Martin Gräßlin)]

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

REVISION SUMMARY
  Instead of having the egl extensions in the global kwinglutils lib it
  becomes private to the AbstractEglBackend. Just like on glx the
  glxextensions are moved into the platform.
  
  The extensions are queried from initEglAPI, that is as early as possible
  after initializing the EGLDisplay. This ensures that any implementing
  subclass can access the extensions early enough.
  
  As a note: the EglOnXBackend had a potentially wrong sequence for
  initializing the buffer age extension. It is now moved to the correct
  place where the result is needed for the first time.
  
  From the global API eglExtensions are removed from hasGLExtension and
  the eglExtensions function is dropped. As by that initEGL did not do
  anything it is also dropped.

TEST PLAN
  Tested nested kwin on Wayland, still works, extensions shown
  in debug console

REPOSITORY
  rKWIN KWin

BRANCH
  drop-init-egl

REVISION DETAIL
  https://phabricator.kde.org/D3396

AFFECTED FILES
  abstract_egl_backend.cpp
  debug_console.cpp
  libkwineffects/kwinglutils.cpp
  libkwineffects/kwinglutils.h
  platform.cpp
  plugins/platforms/x11/common/eglonxbackend.cpp

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

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