[clutter/clutter-1.18] clutter-stage-wayland: Enable clipped redraws

[Adel Gadllah <agadllah src gnome org>]

commit f649d732f9c2507664a85e5358ccd6b541ffb24a
Author: Adel Gadllah <adel gadllah gmail com>
Date:   Fri Mar 14 10:55:52 2014 +0100

    clutter-stage-wayland: Enable clipped redraws
    
    _clutter_stage_window_can_clip_redraws is used to check for clipped redraws
    support but can_clip_redraws is not implemented by clutter-stage-wayland so
    it always returns FALSE causing full screen redraws.
    
    Fix that by implementing can_clip_redraws in clutter-stage-wayland.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=726315

 clutter/wayland/clutter-stage-wayland.c |    7 +++++++
 1 files changed, 7 insertions(+), 0 deletions(-)
---
diff --git a/clutter/wayland/clutter-stage-wayland.c b/clutter/wayland/clutter-stage-wayland.c
index 4c3e0c3..a9658bf 100644
--- a/clutter/wayland/clutter-stage-wayland.c
+++ b/clutter/wayland/clutter-stage-wayland.c
@@ -229,6 +229,12 @@ clutter_stage_wayland_resize (ClutterStageWindow *stage_window,
     }
 }
 
+static gboolean
+clutter_stage_wayland_can_clip_redraws (ClutterStageWindow *stage_window)
+{
+  return TRUE;
+}
+
 static void
 clutter_stage_wayland_init (ClutterStageWayland *stage_wayland)
 {
@@ -245,6 +251,7 @@ clutter_stage_window_iface_init (ClutterStageWindowIface *iface)
   iface->set_fullscreen = clutter_stage_wayland_set_fullscreen;
   iface->set_cursor_visible = clutter_stage_wayland_set_cursor_visible;
   iface->resize = clutter_stage_wayland_resize;
+  iface->can_clip_redraws = clutter_stage_wayland_can_clip_redraws;
 }
 
 static void