5 using namespace libdcp;
7 LUTCache<GammaLUT> GammaLUT::cache;
9 GammaLUT::GammaLUT(int bits, float gamma)
10 : LUT<float> (bits, gamma)
12 int const bit_length = pow(2, bits);
13 for (int i = 0; i < bit_length; ++i) {
14 _lut[i] = pow(float(i) / (bit_length - 1), gamma);