Isosurface.DeferredShader.DeferredShader C# (CSharp) Method

        public DeferredShader(GraphicsDevice device, ContentManager content, SpriteBatch batch)
        {
            Device = device;
            SpriteBatch = batch;

            ClearShader = content.Load<Effect>("deferred_clear");
            RenderToShader = content.Load<Effect>("deferred_to");
            FinalShader = content.Load<Effect>("deferred_final");

            int width = device.PresentationParameters.BackBufferWidth;
            int height = device.PresentationParameters.BackBufferHeight;
            color_target = new RenderTarget2D(device, width, height, false, SurfaceFormat.Color, DepthFormat.Depth24Stencil8);
            normal_target = new RenderTarget2D(device, width, height, false, SurfaceFormat.Color, DepthFormat.None);
            depth_target = new RenderTarget2D(device, width, height, false, SurfaceFormat.Single, DepthFormat.None);

            FinalShader.Parameters["half_pixel"].SetValue(new Vector2(0.5f / (float)width, 0.5f / (float)height));
            FinalShader.Parameters["noise_map"].SetValue(content.Load<Texture2D>("noise_norm"));

            quad = new Quad(device);
            r_state = new RasterizerState();
            r_state.CullMode = CullMode.None;
        }