[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:

  c89503b... texture: Add highdepth api
  f8345b1... gsk: Add high depth rendernode api
  20afe1e... ngl: Allow specifying texture formats
  543832b... ngl: Determine intermediate formats
  690c624... ngl: Update framebuffer format for each frame

Commits added to the branch:

  cabaee1... texture: Add high depth api
  164157f... gsk: Add high depth rendernode api
  80dbf8a... ngl: Allow specifying texture formats
  c8a5038... ngl: Determine intermediate formats
  a7a24cd... ngl: Update framebuffer format for each frame