[PATCH 0/6] ui/dbus: Share one listener for a console

[Akihiko Odaki <akihiko.odaki@gmail.com>]

ui/dbus required to have multiple DisplayChangeListeners (possibly with OpenGL)
for a console but that caused several problems:
- It broke egl-headless, an unusual display which implements OpenGL rendering
  for non-OpenGL displays. The code to support multiple DisplayChangeListeners
  does not consider the case where non-OpenGL displays listens OpenGL consoles.
- Multiple OpenGL DisplayChangeListeners of dbus shares one DisplaySurface and
  modifies its texture field, causing OpenGL texture leak and use-after-free.
- Introduced extra code to check the compatibility of OpenGL context providers
  and OpenGL texture renderers where those are often inherently tightly coupled
  since they must share the same hardware.
- Needed extra work to broadcast the same change to multiple dbus listeners.

This series solve them by implementing the change broadcast in ui/dbus, which
knows exactly what is needed. Changes for the common code to support multiple
OpenGL DisplayChangeListeners were reverted to fix egl-headless and reduce
the code size.

Akihiko Odaki (6):
  ui/dbus: Share one listener for a console
  Revert "console: save current scanout details"
  Revert "ui: split the GL context in a different object"
  Revert "ui: dispatch GL events to all listeners"
  Revert "ui: associate GL context outside of display listener
    registration"
  Revert "ui: factor out qemu_console_set_display_gl_ctx()"

 include/ui/console.h       |  60 +-----
 include/ui/egl-context.h   |   6 +-
 include/ui/gtk.h           |  11 +-
 include/ui/sdl2.h          |   7 +-
 include/ui/spice-display.h |   1 -
 ui/console.c               | 258 +++++++----------------
 ui/dbus-console.c          | 109 ++--------
 ui/dbus-listener.c         | 417 +++++++++++++++++++++++++++----------
 ui/dbus.c                  |  22 --
 ui/dbus.h                  |  36 +++-
 ui/egl-context.c           |   6 +-
 ui/egl-headless.c          |  20 +-
 ui/gtk-egl.c               |  10 +-
 ui/gtk-gl-area.c           |   8 +-
 ui/gtk.c                   |  25 +--
 ui/sdl2-gl.c               |  10 +-
 ui/sdl2.c                  |  14 +-
 ui/spice-display.c         |  19 +-
 18 files changed, 498 insertions(+), 541 deletions(-)

-- 
2.32.0 (Apple Git-132)