compositor MotionBlur
{
    technique
    {
        // Temporary textures
        texture scene target_width target_height PF_A8R8G8B8
        texture sum target_width target_height PF_A8R8G8B8
        texture temp target_width target_height PF_A8R8G8B8

        target scene
        {
            // Render output from previous compositor (or original scene)
            input previous
        }
        target sum
        {
            // Render this target pass only initially, on the first frame that
            // this effect was enabled. This makes sure the sum texture
            // does not start with randomness.
            only_initial on

            input previous
        }
        target temp
        {
            // Start with clear texture
            input none
            // Combine scene and sum texture
            pass render_quad
            {
                // Renders a fullscreen quad with a material
                material Ogre/Compositor/Combine
                input 0 scene
                input 1 sum
            }
        }
        target sum
        {
            // Start with clear texture
            input none
            // Copy temporary back to sum
            pass render_quad
            {
                // Renders a fullscreen quad with a material
                material Ogre/Compositor/Copyback
                input 0 temp
            }
        }
        target_output
        {
            // Start with clear output
            input none
            // Draw a fullscreen quad with the blur
            pass render_quad
            {
                // Renders a fullscreen quad with a material
                material Ogre/Compositor/MotionBlur
                input 0 sum
            }
        }
    }
}