sb.End();
                sb.GraphicsDevice.Clear(Color.Black);
                sb.Begin();
                effect.CurrentTechnique.Passes[0].Apply();

                sb.Draw(GameTexture, new Vector2(0, 0),null, new Color(255, 255, 255, 0),0,Vector2.Zero,1,SpriteEffects.None,1);
                sb.End();
                sb.Begin();