public CullingItemFactory()
        {
            var shadowPool = new GenericPool <ShadowCullingHandler>();

            shadowPool.SetMeta(new ShadowCullingHandler(shadowPool.Reuse));
            _shadowPool = shadowPool;

            var probePool = new GenericPool <ProbeCullingHandler>();

            probePool.SetMeta(new ProbeCullingHandler(probePool.Reuse));
            _probePool = probePool;
        }