diff --git a/composite.cpp b/composite.cpp
index 5dbc3160ff..efa5dd0a49 100644
--- a/composite.cpp
+++ b/composite.cpp
@@ -284,6 +284,13 @@ void Workspace::addRepaint( const QRect& r )
     repaints_region += r;
     }
     
+void Workspace::addRepaint( const QRegion& r )
+    {
+    if( !compositing())
+        return;
+    repaints_region += r;
+    }
+    
 void Workspace::addRepaintFull()
     {
     if( !compositing())
diff --git a/effects.cpp b/effects.cpp
index a5a210cc7a..4db4c6f4cf 100644
--- a/effects.cpp
+++ b/effects.cpp
@@ -537,6 +537,11 @@ void EffectsHandlerImpl::addRepaint( const QRect& r )
     Workspace::self()->addRepaint( r );
     }
 
+void EffectsHandlerImpl::addRepaint( const QRegion& r )
+    {
+    Workspace::self()->addRepaint( r );
+    }
+
 void EffectsHandlerImpl::addRepaint( int x, int y, int w, int h )
     {
     Workspace::self()->addRepaint( x, y, w, h );
@@ -552,6 +557,11 @@ int EffectsHandlerImpl::numScreens() const
     return Workspace::self()->numScreens();
     }
 
+int EffectsHandlerImpl::screenNumber( const QPoint& pos ) const
+    {
+    return Workspace::self()->screenNumber( pos );
+    }
+
 QRect EffectsHandlerImpl::clientArea( clientAreaOption opt, int screen, int desktop ) const
     {
     return Workspace::self()->clientArea( opt, screen, desktop );
diff --git a/effects.h b/effects.h
index ea39c33ce0..d14ee3ee6c 100644
--- a/effects.h
+++ b/effects.h
@@ -85,9 +85,11 @@ class EffectsHandlerImpl : public EffectsHandler
 
         virtual void addRepaintFull();
         virtual void addRepaint( const QRect& r );
+        virtual void addRepaint( const QRegion& r );
         virtual void addRepaint( int x, int y, int w, int h );
         virtual int activeScreen() const;
         virtual int numScreens() const;
+        virtual int screenNumber( const QPoint& pos ) const;
         virtual QRect clientArea( clientAreaOption, int screen, int desktop ) const;
         virtual QRect clientArea( clientAreaOption, const EffectWindow* c ) const;
         virtual QRect clientArea( clientAreaOption, const QPoint& p, int desktop ) const;
diff --git a/lib/kwineffects.h b/lib/kwineffects.h
index 7dab8c75ca..32397b7c23 100644
--- a/lib/kwineffects.h
+++ b/lib/kwineffects.h
@@ -477,6 +477,7 @@ class KWIN_EXPORT EffectsHandler
         virtual QString desktopName( int desktop ) const = 0;
         virtual int activeScreen() const = 0; // Xinerama
         virtual int numScreens() const = 0; // Xinerama
+        virtual int screenNumber( const QPoint& pos ) const = 0; // Xinerama
         virtual QRect clientArea( clientAreaOption, int screen, int desktop ) const = 0;
         virtual QRect clientArea( clientAreaOption, const EffectWindow* c ) const = 0;
         virtual QRect clientArea( clientAreaOption, const QPoint& p, int desktop ) const = 0;
@@ -515,6 +516,7 @@ class KWIN_EXPORT EffectsHandler
          **/
         virtual void addRepaintFull() = 0;
         virtual void addRepaint( const QRect& r ) = 0;
+        virtual void addRepaint( const QRegion& r ) = 0;
         virtual void addRepaint( int x, int y, int w, int h ) = 0;
 
         CompositingType compositingType() const;
diff --git a/workspace.h b/workspace.h
index b0e2f4890d..f36b449492 100644
--- a/workspace.h
+++ b/workspace.h
@@ -317,6 +317,7 @@ class Workspace : public QObject, public KDecorationDefines
         // when adding repaints caused by a window, you probably want to use
         // either Toplevel::addRepaint() or Toplevel::addWorkspaceRepaint()
         void addRepaint( const QRect& r );
+        void addRepaint( const QRegion& r );
         void addRepaint( int x, int y, int w, int h );
         // creates XComposite overlay window, call initOverlay() afterwards
         bool createOverlay();