public static void LoadTexturesCpu(this ContentManager contentManager, List<string> assetName, Action<List<Texture2D>> action)
        {
            lock (Threading.BackgroundContext)
            {
                ThreadPool.QueueUserWorkItem((s) =>
                {
                    IGraphicsDeviceService serv = contentManager.ServiceProvider.GetService(typeof(IGraphicsDeviceService)) as IGraphicsDeviceService;

                    List<Texture2D> assets = new List<Texture2D>();
                    //load assets

                    for (int i = 0; i < assetName.Count; i++)
                    {

                        BitmapEncoder encoder = new JpegBitmapEncoder();
                        BitmapImage myBitmapImage = new BitmapImage();
                        using (MemoryStream ms = new MemoryStream())
                        {
                            myBitmapImage.BeginInit();
                            myBitmapImage.UriSource = new Uri(@"C:\Documents and Settings\All Users\Documents\My Pictures\Sample Pictures\Koala.jpg");
                            myBitmapImage.EndInit();

                            //add frame to encoder and save it to the stream
                            encoder.Frames.Add(BitmapFrame.Create(myBitmapImage));
                            encoder.Save(ms);

                            //byte[] data = ms.ToArray();
                            // Texture2D texture = Texture2D.FromStream(serv.GraphicsDevice, ms);


                            //texture.Name = assetName[i];

                            using (Bitmap image = (Bitmap)Bitmap.FromStream(ms))
                            {
                                // Fix up the Image to match the expected format
                                image.RGBToBGR();

                                var data = new byte[image.Width * image.Height * 4];

                                BitmapData bitmapData = image.LockBits(new System.Drawing.Rectangle(0, 0, image.Width, image.Height),
                                    ImageLockMode.ReadOnly, System.Drawing.Imaging.PixelFormat.Format32bppArgb);
                                if (bitmapData.Stride != image.Width * 4) throw new NotImplementedException();
                                Marshal.Copy(bitmapData.Scan0, data, 0, data.Length);
                                image.UnlockBits(bitmapData);

                                Texture2D texture = null;
                                texture = new Texture2D(serv.GraphicsDevice, image.Width, image.Height);
                                texture.SetData(data);

                                assets.Add(BuildMipMapCPU(texture, data));
                            }

                        }

                    }

                    //report done
                    if (action != null)
                    {
                        Dispatcher.CurrentDispatcher.Invoke(action, assets);

                    }

                });
            }
        }