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;
}