Function PowerHeuristic

include/luxrays/utils/mc.h:74–77

		return BalanceHeuristic(1, fPdf, 1, gPdf);
	}
	inline float PowerHeuristic(const u_int nf, const float fPdf, const u_int ng, const float gPdf) {
		const float f = nf * fPdf, g = ng * gPdf;
		return (f * f) / (f * f + g * g);
	}
	inline float PowerHeuristic(const float fPdf, const float gPdf) {
		return PowerHeuristic(1, fPdf, 1, gPdf);
	}