[clutter] clutter-backend: Use the Cogl main loop mechanism

[Robert Bragg <rbragg src gnome org>]

commit fee53a2993db3795bd7ffbb4e878c807ccdaa80c
Author: Neil Roberts <neil linux intel com>
Date:   Wed Dec 21 15:13:53 2011 +0000

    clutter-backend: Use the Cogl main loop mechanism
    
    Cogl now requires that all applications integrate their main loop with
    Cogl so that it can listen for events from winsys. This patch just
    adds Cogl's GSource to the main loop.
    
    Reviewed-by: Emmanuele Bassi <ebassi linux intel com>
    Reviewed-by: Robert Bragg <robert linux intel com>

 clutter/clutter-backend-private.h |    1 +
 clutter/clutter-backend.c         |    6 ++++++
 2 files changed, 7 insertions(+), 0 deletions(-)
---
diff --git a/clutter/clutter-backend-private.h b/clutter/clutter-backend-private.h
index 32ebba2..72563a3 100644
--- a/clutter/clutter-backend-private.h
+++ b/clutter/clutter-backend-private.h
@@ -44,6 +44,7 @@ struct _ClutterBackend
   CoglRenderer *cogl_renderer;
   CoglDisplay *cogl_display;
   CoglContext *cogl_context;
+  GSource *cogl_source;
 
   ClutterDeviceManager *device_manager;
 
diff --git a/clutter/clutter-backend.c b/clutter/clutter-backend.c
index 9d14df3..488008f 100644
--- a/clutter/clutter-backend.c
+++ b/clutter/clutter-backend.c
@@ -142,6 +142,8 @@ clutter_backend_finalize (GObject *gobject)
 {
   ClutterBackend *backend = CLUTTER_BACKEND (gobject);
 
+  g_source_destroy (backend->cogl_source);
+
   g_free (backend->priv->font_name);
   clutter_backend_set_font_options (backend, NULL);
 
@@ -324,6 +326,10 @@ clutter_backend_real_create_context (ClutterBackend  *backend,
   if (backend->cogl_context == NULL)
     goto error;
 
+  backend->cogl_source = cogl_glib_source_new (backend->cogl_context,
+                                               G_PRIORITY_DEFAULT);
+  g_source_attach (backend->cogl_source, NULL);
+
   /* the display owns the renderer and the swap chain */
   cogl_object_unref (backend->cogl_renderer);
   cogl_object_unref (swap_chain);