//------------------------------------------------------------------

bool BSDF(
	SurfaceScatterEvent* event,
	const Ray* ray,
	const Scene* scene,
	const Material* mat,
	RNG_SEED_PARAM
) {

#ifdef DIFF
	if (mat->t & DIFF)
#else
	if (false)
#endif
	{
		LambertBSDF(ray, event, mat, RNG_SEED_VALUE);
		return true;
	}


	return false;
}

//------------------------------------------------------------------

float3 BSDF_eval(
	SurfaceScatterEvent* event,
	const Scene* scene,
	const Material* mat
) {

#ifdef DIFF
	if (mat->t & DIFF)
#else
	if (false)
#endif
	{
		return LambertBSDF_eval(event, mat);
	}


	return (float3)(0.0f);
}

//------------------------------------------------------------------

float BSDF_pdf(
	const SurfaceScatterEvent* event,
	const Material* mat
) {

#ifdef DIFF
	if (mat->t & DIFF)
#else
	if (false)
#endif
	{
		return LambertBSDF_pdf(event);
	}


	return -1.0f;
}