[gtk] (12 commits) Non-fast-forward update to branch wip/otte/float-textures

[Benjamin Otte <otte src gnome org>]

The branch 'wip/otte/float-textures' 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:

  6f33c8d... texture: Add gdk_texture_download_float()
  1837c7b... memorytexture: Add support for HDR formats
  e5913a3... testsuite: Overhaul memorytexture test
  8e9ffaa... testsuite: Rework memorytexture test some more
  863c726... testsuite: Add tests uploading the memorytextures
  88f84d9... gdk: Deprecate gdk_cairo_draw_from_gl()
  30470fd... testsuite: Add memory test support for OpenGL up/downloads
  0b7f6e3... gltexture whatever HELP: CLEAN THIS UP!

Commits added to the branch:

  90fe997... texture: Add gdk_texture_download_texture()
  6b42cc0... gltexture: Make release() use download_texture()
  376c765... gltexture: Implement download() via glGetTexImage()
  7070de7... gdk: Deprecate gdk_cairo_draw_from_gl()
  5db349b... texture: Add gdk_texture_download_float()
  923ac2b... memorytexture: Add support for HDR formats
  e869578... gl: Implement uploading and downloading HDR formats
  d05738b... testsuite: Overhaul memorytexture test
  7f8f573... testsuite: Rework memorytexture test some more
  69ce036... testsuite: Add tests uploading the memorytextures
  2211af1... testsuite: Add memory test support for OpenGL up/downloads
  0b571c0... testsuite: Add tests for gdk_texture_download_float()