diff --git a/gtk/gtkviewport.c b/gtk/gtkviewport.c
index 0469c5bce4..47815898ea 100644
--- a/gtk/gtkviewport.c
+++ b/gtk/gtkviewport.c
@@ -66,6 +66,13 @@ struct _GtkViewportPrivate
   GdkWindow      *bin_window;
   GdkWindow      *view_window;
 
+  int backing_surface_x;
+  int backing_surface_y;
+  int backing_surface_w;
+  int backing_surface_h;
+  cairo_surface_t *backing_surface;
+  cairo_region_t *backing_surface_dirty;
+
   /* GtkScrollablePolicy needs to be checked when
    * driving the scrollable adjustment values */
   guint hscroll_policy : 1;
@@ -649,6 +656,39 @@ gtk_viewport_get_view_window (GtkViewport *viewport)
   return viewport->priv->view_window;
 }
 
+static gboolean
+gtk_viewport_bin_window_update_handler (GdkWindow *window,
+					cairo_region_t *region)
+{
+  gpointer widget;
+  GtkViewport *viewport;
+  GtkViewportPrivate *priv;
+  cairo_rectangle_int_t r;
+
+  gdk_window_get_user_data (window, &widget);
+  viewport = GTK_VIEWPORT (widget);
+  priv = viewport->priv;
+
+  if (priv->backing_surface_dirty == NULL)
+    priv->backing_surface_dirty = cairo_region_create ();
+
+  cairo_region_translate (region,
+			  -priv->backing_surface_x,
+			  -priv->backing_surface_y);
+  cairo_region_union (priv->backing_surface_dirty, region);
+  cairo_region_translate (region,
+			  priv->backing_surface_x,
+			  priv->backing_surface_y);
+
+  r.x = 0;
+  r.y = 0;
+  r.width = priv->backing_surface_w;
+  r.height = priv->backing_surface_h;
+  cairo_region_intersect_rectangle (priv->backing_surface_dirty, &r);
+
+  return TRUE;
+}
+
 static void
 gtk_viewport_realize (GtkWidget *widget)
 {
@@ -713,6 +753,8 @@ gtk_viewport_realize (GtkWidget *widget)
 
   priv->bin_window = gdk_window_new (priv->view_window, &attributes, attributes_mask);
   gtk_widget_register_window (widget, priv->bin_window);
+  gdk_window_set_update_handler (priv->bin_window,
+				 gtk_viewport_bin_window_update_handler);
 
   child = gtk_bin_get_child (bin);
   if (child)
@@ -750,7 +792,10 @@ gtk_viewport_draw (GtkWidget *widget,
   GtkViewport *viewport = GTK_VIEWPORT (widget);
   GtkViewportPrivate *priv = viewport->priv;
   GtkStyleContext *context;
-  int x, y;
+  cairo_t *backing_cr;
+  GtkWidget *child;
+  int x, y, bin_x, bin_y, new_surf_x, new_surf_y;
+  cairo_rectangle_int_t view_pos;
 
   context = gtk_widget_get_style_context (widget);
 
@@ -766,29 +811,147 @@ gtk_viewport_draw (GtkWidget *widget,
 
       gtk_style_context_restore (context);
     }
-  
-  if (gtk_cairo_should_draw_window (cr, priv->view_window))
+
+  if (priv->backing_surface &&
+      /* Don't use backing surface if rendering elsewhere */
+      cairo_surface_get_type (priv->backing_surface) == cairo_surface_get_type (cairo_get_target (cr)))
     {
-      /* This is a cute hack to ensure the contents of bin_window are
-       * restricted to where they are visible. We only need to do this
-       * clipping when called via gtk_widget_draw() and not in expose
-       * events. And when that happens every window (including this one)
-       * should be drawn.
-       */
+      gdk_window_get_position (priv->bin_window, &bin_x, &bin_y);
+      view_pos.x = -bin_x;
+      view_pos.y = -bin_y;
+      view_pos.width = gdk_window_get_width (priv->view_window);
+      view_pos.height = gdk_window_get_height (priv->view_window);
+
+      /* Reposition so all is visible visible */
+      if (priv->backing_surface)
+	{
+	  cairo_rectangle_int_t r;
+	  cairo_region_t *copy_region;
+	  if (view_pos.x < priv->backing_surface_x ||
+	      view_pos.x + view_pos.width >
+	      priv->backing_surface_x + priv->backing_surface_w ||
+	      view_pos.y < priv->backing_surface_y ||
+	      view_pos.y + view_pos.height >
+	      priv->backing_surface_y + priv->backing_surface_h)
+	    {
+	      new_surf_x = priv->backing_surface_x;
+	      if (view_pos.x < priv->backing_surface_x)
+		new_surf_x = view_pos.x - (priv->backing_surface_w - view_pos.width);
+	      else if (view_pos.x + view_pos.width >
+		       priv->backing_surface_x + priv->backing_surface_w)
+		new_surf_x = view_pos.x;
+
+	      new_surf_y = priv->backing_surface_y;
+	      if (view_pos.y < priv->backing_surface_y)
+		new_surf_y = view_pos.y - (priv->backing_surface_h - view_pos.height);
+	      else if (view_pos.y + view_pos.height >
+		       priv->backing_surface_y + priv->backing_surface_h)
+		new_surf_y = view_pos.y;
+
+	      r.x = 0;
+	      r.y = 0;
+	      r.width = priv->backing_surface_w;
+	      r.height = priv->backing_surface_h;
+	      copy_region = cairo_region_create_rectangle (&r);
+
+	      if (priv->backing_surface_dirty)
+		{
+		  cairo_region_subtract (copy_region, priv->backing_surface_dirty);
+		  cairo_region_destroy (priv->backing_surface_dirty);
+		  priv->backing_surface_dirty = NULL;
+		}
+
+	      cairo_region_translate (copy_region,
+				      priv->backing_surface_x - new_surf_x,
+				      priv->backing_surface_y - new_surf_y);
+	      cairo_region_intersect_rectangle (copy_region, &r);
+
+	      backing_cr = cairo_create (priv->backing_surface);
+	      gdk_cairo_region (backing_cr, copy_region);
+	      cairo_clip (backing_cr);
+	      cairo_push_group (backing_cr);
+	      cairo_set_source_surface (backing_cr, priv->backing_surface,
+					priv->backing_surface_x - new_surf_x,
+					priv->backing_surface_y - new_surf_y);
+	      cairo_paint (backing_cr);
+	      cairo_pop_group_to_source (backing_cr);
+	      cairo_set_operator (backing_cr, CAIRO_OPERATOR_SOURCE);
+	      cairo_paint (backing_cr);
+	      cairo_destroy (backing_cr);
+
+	      priv->backing_surface_x = new_surf_x;
+	      priv->backing_surface_y = new_surf_y;
+
+	      cairo_region_xor_rectangle (copy_region, &r);
+	      priv->backing_surface_dirty = copy_region;
+	    }
+	}
+
+      if (priv->backing_surface_dirty &&
+	  !cairo_region_is_empty (priv->backing_surface_dirty))
+	{
+	  backing_cr = cairo_create (priv->backing_surface);
+	  gdk_cairo_region (backing_cr, priv->backing_surface_dirty);
+	  cairo_clip (backing_cr);
+	  cairo_translate (backing_cr,
+			   -priv->backing_surface_x,
+			   -priv->backing_surface_y);
+	  cairo_set_source_rgba (backing_cr,
+				 0, 0, 0, 0);
+	  cairo_set_operator (backing_cr, CAIRO_OPERATOR_SOURCE);
+	  cairo_paint (backing_cr);
+	  cairo_set_operator (backing_cr, CAIRO_OPERATOR_OVER);
+	  gtk_render_background (context, backing_cr,
+				 0,0,
+				 gdk_window_get_width (priv->bin_window),
+				 gdk_window_get_height (priv->bin_window));
+	  child = gtk_bin_get_child (GTK_BIN (widget));
+	  if (child && gtk_widget_get_visible (child)) {
+	    if (!gtk_widget_get_has_window (child))
+	      {
+		GtkAllocation child_allocation;
+		gtk_widget_get_allocation (child, &child_allocation);
+		cairo_translate (backing_cr,
+				 child_allocation.x,
+				 child_allocation.y);
+	      }
+
+	    gtk_widget_draw (child, backing_cr);
+	  }
+
+	  cairo_destroy (backing_cr);
+	}
+
+      if (priv->backing_surface_dirty)
+	{
+	  cairo_region_destroy (priv->backing_surface_dirty);
+	  priv->backing_surface_dirty = NULL;
+	}
+
+      if (gtk_cairo_should_draw_window (cr, priv->view_window))
+	{
+	  gdk_window_get_position (priv->view_window, &x, &y);
+	  cairo_set_source_surface (cr, priv->backing_surface,
+				    priv->backing_surface_x + bin_x + x,
+				    priv->backing_surface_y + bin_y + y);
+	  cairo_rectangle (cr, x, y,
+			   gdk_window_get_width (priv->view_window),
+			   gdk_window_get_height (priv->view_window));
+	  cairo_fill (cr);
+	}
+    }
+  else
+    {
+      /* Don't use backing_surface */
       gdk_window_get_position (priv->view_window, &x, &y);
-      cairo_rectangle (cr, x, y, 
+      cairo_rectangle (cr, x, y,
                        gdk_window_get_width (priv->view_window),
                        gdk_window_get_height (priv->view_window));
       cairo_clip (cr);
-    }
-
-  if (gtk_cairo_should_draw_window (cr, priv->bin_window))
-    {
       gdk_window_get_position (priv->bin_window, &x, &y);
       gtk_render_background (context, cr, x, y,
                              gdk_window_get_width (priv->bin_window),
                              gdk_window_get_height (priv->bin_window));
-
       GTK_WIDGET_CLASS (gtk_viewport_parent_class)->draw (widget, cr);
     }
 
@@ -823,6 +986,7 @@ gtk_viewport_size_allocate (GtkWidget     *widget,
   GtkAdjustment *vadjustment = priv->vadjustment;
   GtkAllocation child_allocation;
   GtkWidget *child;
+  int surface_w, surface_h;
 
   border_width = gtk_container_get_border_width (GTK_CONTAINER (widget));
 
@@ -843,7 +1007,7 @@ gtk_viewport_size_allocate (GtkWidget     *widget,
 
   viewport_set_hadjustment_values (viewport);
   viewport_set_vadjustment_values (viewport);
-  
+
   child_allocation.x = 0;
   child_allocation.y = 0;
   child_allocation.width = gtk_adjustment_get_upper (hadjustment);
@@ -851,6 +1015,7 @@ gtk_viewport_size_allocate (GtkWidget     *widget,
   if (gtk_widget_get_realized (widget))
     {
       GtkAllocation view_allocation;
+      cairo_rectangle_int_t rect;
 
       gdk_window_move_resize (gtk_widget_get_window (widget),
 			      allocation->x + border_width,
@@ -869,6 +1034,48 @@ gtk_viewport_size_allocate (GtkWidget     *widget,
                               - gtk_adjustment_get_value (vadjustment),
                               child_allocation.width,
                               child_allocation.height);
+
+      surface_w = view_allocation.width;
+      if (child_allocation.width > view_allocation.width)
+	surface_w = MIN (surface_w + 64, child_allocation.width);
+
+      surface_h = view_allocation.height;
+      if (child_allocation.height > view_allocation.height)
+	surface_h = MIN (surface_h + 64, child_allocation.height);
+
+      if (priv->backing_surface != NULL &&
+	  (priv->backing_surface_w < view_allocation.width ||
+	   priv->backing_surface_w > surface_w + 32 ||
+	   priv->backing_surface_h < view_allocation.height ||
+	   priv->backing_surface_h > surface_h + 32))
+	{
+	  cairo_surface_destroy (priv->backing_surface);
+	  priv->backing_surface = NULL;
+	  if (priv->backing_surface_dirty)
+	    cairo_region_destroy (priv->backing_surface_dirty);
+	  priv->backing_surface_dirty = NULL;
+	}
+
+      if (priv->backing_surface == NULL &&
+	  (view_allocation.width < child_allocation.width ||
+	   view_allocation.height < child_allocation.height))
+	{
+	  priv->backing_surface_x = gtk_adjustment_get_value (hadjustment);
+	  priv->backing_surface_y = gtk_adjustment_get_value (vadjustment);
+	  priv->backing_surface_w = surface_w;
+	  priv->backing_surface_h = surface_h;
+	  priv->backing_surface_dirty = cairo_region_create ();
+	  priv->backing_surface =
+	    gdk_window_create_similar_surface (priv->bin_window,
+					       CAIRO_CONTENT_COLOR_ALPHA,
+					       surface_w, surface_h);
+	  rect.x = 0;
+	  rect.y = 0;
+	  rect.width = surface_w;
+	  rect.height = surface_h;
+	  cairo_region_union_rectangle (priv->backing_surface_dirty,
+					&rect);
+	}
     }
 
   child = gtk_bin_get_child (bin);