[gtk] (5 commits) Non-fast-forward update to branch wip/matthiasc/gsk-hdr

[Matthias Clasen <matthiasc src gnome org>]

The branch 'wip/matthiasc/gsk-hdr' 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:

  7201a30... gsk: Add high depth rendernode api
  f11bafc... ngl: Allow specifying texture formats
  6dc5065... ngl: Determine intermediate formats
  2a29b5c... ngl: Update framebuffer format for each frame
  ba95b0d... ngl: Make render_texture high depth aware

Commits added to the branch:

  2a08641... gsk: Add high depth rendernode api
  9174814... ngl: Allow specifying texture formats
  985d2d2... ngl: Determine intermediate formats
  8a24def... ngl: Update framebuffer format for each frame
  566a2e6... ngl: Make render_texture high depth aware