diff --git a/clutter/Makefile.am b/clutter/Makefile.am
index 0a05f280d..8c89acdc4 100644
--- a/clutter/Makefile.am
+++ b/clutter/Makefile.am
@@ -239,6 +239,7 @@ source_h_priv = \
 	$(srcdir)/clutter-keysyms-table.h		\
 	$(srcdir)/clutter-master-clock.h		\
 	$(srcdir)/clutter-model-private.h		\
+	$(srcdir)/clutter-offscreen-effect-private.h	\
 	$(srcdir)/clutter-paint-volume-private.h	\
 	$(srcdir)/clutter-private.h 			\
 	$(srcdir)/clutter-profile.h			\
diff --git a/clutter/clutter-offscreen-effect-private.h b/clutter/clutter-offscreen-effect-private.h
new file mode 100644
index 000000000..6a9137bff
--- /dev/null
+++ b/clutter/clutter-offscreen-effect-private.h
@@ -0,0 +1,14 @@
+#ifndef __CLUTTER_OFFSCREEN_EFFECT_PRIVATE_H__
+#define __CLUTTER_OFFSCREEN_EFFECT_PRIVATE_H__
+
+#include <clutter/clutter-offscreen-effect.h>
+
+G_BEGIN_DECLS
+
+gboolean        _clutter_offscreen_effect_get_target_size       (ClutterOffscreenEffect *effect,
+                                                                 gfloat                 *width,
+                                                                 gfloat                 *height);
+
+G_END_DECLS
+
+#endif /* __CLUTTER_OFFSCREEN_EFFECT_PRIVATE_H__ */
diff --git a/clutter/clutter-offscreen-effect.c b/clutter/clutter-offscreen-effect.c
index 1fbb17e95..269640847 100644
--- a/clutter/clutter-offscreen-effect.c
+++ b/clutter/clutter-offscreen-effect.c
@@ -475,3 +475,22 @@ clutter_offscreen_effect_create_texture (ClutterOffscreenEffect *effect,
                                                                       width,
                                                                       height);
 }
+
+gboolean
+_clutter_offscreen_effect_get_target_size (ClutterOffscreenEffect *effect,
+                                           gfloat                 *width,
+                                           gfloat                 *height)
+{
+  ClutterOffscreenEffectPrivate *priv = effect->priv;
+
+  if (priv->target == NULL)
+    return FALSE;
+
+  if (width)
+    *width = priv->target_width;
+
+  if (height)
+    *height = priv->target_height;
+
+  return TRUE;
+}