public void Initialize(DeviceContextHolder contextHolder) {
_effect = contextHolder.GetEffect<EffectDeferredGSky>();
_rasterizerState = RasterizerState.FromDescription(contextHolder.Device, new RasterizerStateDescription {
FillMode = FillMode.Solid,
CullMode = CullMode.Front,
IsAntialiasedLineEnabled = false,
IsFrontCounterclockwise = false,
IsDepthClipEnabled = true
});
}