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diff --git a/LibOVR/Src/Util/Util_ImageWindow.h b/LibOVR/Src/Util/Util_ImageWindow.h
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+/************************************************************************************
+
+Filename    :   Util_ImageWindow.h
+Content     :   An output object for windows that can display raw images for testing
+Created     :   March 13, 2014
+Authors     :   Dean Beeler
+
+Copyright   :   Copyright 2014 Oculus VR, Inc. All Rights reserved.
+
+Licensed under the Oculus VR Rift SDK License Version 3.1 (the "License"); 
+you may not use the Oculus VR Rift SDK except in compliance with the License, 
+which is provided at the time of installation or download, or which 
+otherwise accompanies this software in either electronic or hard copy form.
+
+You may obtain a copy of the License at
+
+http://www.oculusvr.com/licenses/LICENSE-3.1 
+
+Unless required by applicable law or agreed to in writing, the Oculus VR SDK 
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+
+*************************************************************************************/
+
+#ifndef UTIL_IMAGEWINDOW_H
+#define UTIL_IMAGEWINDOW_H
+
+#define WIN32_LEAN_AND_MEAN 1
+#include <windows.h>
+#include <d2d1.h>
+
+#include "../../Include/OVR.h"
+#include "../Kernel/OVR_Hash.h"
+#include "../Kernel/OVR_Array.h"
+#include "../Kernel/OVR_Threads.h"
+#include "../Kernel/OVR_Deque.h"
+
+#include <stdint.h>
+
+namespace OVR { namespace Util {
+
+class ImageWindow
+{
+	typedef struct 
+	{
+		float x;
+		float y;
+		float radius;
+		float r;
+		float g;
+		float b;
+		bool  fill;
+	} CirclePlot;
+
+	typedef struct  
+	{
+		float x;
+		float y;
+		float r;
+		float g;
+		float b;
+		WCHAR* text;
+	} TextPlot;
+
+	typedef struct
+	{
+		Array<CirclePlot> plots;
+		void*			  imageData;
+		void*			  colorImageData;
+		int				  width;
+		int				  height;
+		int				  colorPitch;
+		bool			  ready;
+	} Frame;
+
+	static ID2D1Factory* pD2DFactory;
+
+	HWND hWindow;
+	ID2D1RenderTarget* pRT;
+	D2D1_SIZE_U resolution;
+
+	Mutex*						frontBufferMutex;
+
+	InPlaceMutableDeque<Frame>	frames;
+
+	ID2D1Bitmap*				greyBitmap;
+	ID2D1Bitmap*				colorBitmap;
+
+public:
+	// constructors
+	ImageWindow();
+	ImageWindow( UINT width, UINT height );
+	virtual ~ImageWindow();
+
+	void OnPaint(); // Called by Windows when it receives a WM_PAINT message
+
+	void UpdateImage( const UINT8* imageData, UINT width, UINT height ) { UpdateImageBW( imageData, width, height ); }
+	void UpdateImageBW( const UINT8* imageData, UINT width, UINT height );
+	void UpdateImageRGBA( const UINT8* imageData, UINT width, UINT height, UINT pitch );
+	void Complete(); // Called by drawing thread to submit a frame
+
+	void Process(); // Called by rendering thread to do window processing
+
+	void AssociateSurface( void* surface );
+
+	void addCircle( float x , float y, float radius, float r, float g, float b, bool fill );
+
+	static ImageWindow*			GlobalWindow() { return globalWindow; }
+
+private:
+
+
+	static ImageWindow*			globalWindow;
+
+	static bool running;
+};
+
+}} // namespace OVR::Util
+
+#endif
+\ No newline at end of file