[gtk] (26 commits) Non-fast-forward update to branch wip/chergert/gdk-macos-gl-renderer

[Christian Hergert <chergert src gnome org>]

The branch 'wip/chergert/gdk-macos-gl-renderer' was changed in a way that was not a fast-forward update.
NOTE: This may cause problems for people pulling from the branch. For more information,
please see:

 https://wiki.gnome.org/Git/Help/NonFastForward

Commits removed from the branch:

  de8d34e... macos: be resilient to NULL GdkGLContext
  cc348a7... macos: move setNeedsDisplay:BOOL to cairo implementation
  60bfed8... macos: remove incomplete GL layer
  8b9595e... glsl: tweak preamble to work on Apple glsl compiler
  ceff870... macos: add basic GL view and wire up GL context to use it
  e5a636d... macos: use shared data GL context
  36e282b... gl: hold ref to previous context when replacing
  04a9ec1... macos: create NSOpenGLPixelFormat once
  6895629... macos: wip on making GL renderer more compliant
  ea09d35... macos: remove layer scaling when resizing
  9f7de87... macos: reduce renderer requirements
  497cdb7... macos: chainup end_frame before flushing buffer
  92ea076... macos: setup native window and view for accelerated GL
  de0239c... macos: setup clip for flushBuffer
  931aaa9... macos: do less work to update backing surface
  dec04dc... macos: tweak gravity during resizes
  b64e83f... macos: clear current context if necessary
  adeae4b... macos: use g_message() for GL info
  ee30ff9... macos: remove early pixelFormat check
  f94f36a... macos: log requested version of Core profile
  291d4cd... macos: cleanup pixelFormat creation
  96722a9... macos: provide GL driver information to debug message
  f80f5cb... macos: avoid duplicate call and update GL context
  ff09eee... macos: restore GL context after realize
  277df49... gl: remove unused texture_from_surface API

Commits added to the branch:

  f02f824... gl: remove unused texture_from_surface API (*)
  4cfad21... macos: be resilient to NULL GdkGLContext
  b593e25... macos: move setNeedsDisplay:BOOL to cairo implementation
  362c9cf... macos: remove incomplete GL layer
  655b353... glsl: tweak preamble to work on Apple glsl compiler
  0076e4c... macos: add basic GL view and wire up GL context to use it
  4dfbb34... macos: use shared data GL context
  590a7c4... gl: hold ref to previous context when replacing
  7499fc8... macos: create NSOpenGLPixelFormat once
  5c5bcb7... macos: wip on making GL renderer more compliant
  6052aea... macos: remove layer scaling when resizing
  e5989ff... macos: reduce renderer requirements
  5938e50... macos: chainup end_frame before flushing buffer
  bfc2a3e... macos: setup native window and view for accelerated GL
  b56ace5... macos: setup clip for flushBuffer
  ba1c8fe... macos: do less work to update backing surface
  c40e8e5... macos: tweak gravity during resizes
  4e69860... macos: clear current context if necessary
  66013ff... macos: use g_message() for GL info
  2d63df0... macos: remove early pixelFormat check
  4598285... macos: log requested version of Core profile
  3122d4b... macos: cleanup pixelFormat creation
  8e9fe2c... macos: provide GL driver information to debug message
  8995801... macos: avoid duplicate call and update GL context
  a9340e8... macos: restore GL context after realize
  1db0132... macos: wait for begin_frame to switch to GL view

(*) This commit already existed in another branch; no separate mail sent