protected final void cleanup(Renderer r) {   
        processor = null;
        if (defaultPass != null) {
            defaultPass.cleanup(r);
        }
        if (postRenderPasses != null) {
            for (Iterator<Pass> it = postRenderPasses.iterator(); it.hasNext();) {
                Pass pass = it.next();
                pass.cleanup(r);
            }
        }
        cleanUpFilter(r);
    }
cleanup this filter

@param r the Renderer
jme3-core/src/main/java/com/jme3/post/Filter.java