[clutter] docs: Add ClutterActorClass.paint_node() description

[Emmanuele Bassi <ebassi src gnome org>]

commit b44290c4369e86f8fff19bf4ccbb0cb7a5268cdc
Author: Emmanuele Bassi <ebassi linux intel com>
Date:   Fri Mar 16 12:01:28 2012 +0000

    docs: Add ClutterActorClass.paint_node() description

 clutter/clutter-actor.h |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/clutter/clutter-actor.h b/clutter/clutter-actor.h
index 85b5d69..b55afd1 100644
--- a/clutter/clutter-actor.h
+++ b/clutter/clutter-actor.h
@@ -179,6 +179,8 @@ struct _ClutterActor
  *   sub-classes to advertise whether they need an offscreen redirect
  *   to get the correct opacity. See
  *   clutter_actor_set_offscreen_redirect() for details.
+ * @paint_node: virtual function for creating paint nodes and attaching
+ *   them to the render tree
  *
  * Base class for actors.
  */