336                                 double y2 = y1 + (metadata.displayMaxLuminance - y1) * 0.75;  in lookupTonemapGain()  local
342                                 double m1 = (y2 - y1) / h12;  in lookupTonemapGain()
343                                 double m3 = (metadata.displayMaxLuminance - y2) / h23;  in lookupTonemapGain()
359                                             (y2 * (3.0 - 2.0 * t) + h12 * m2 * (t - 1.0)) * t * t;  in lookupTonemapGain()
364                                     targetNits = (y2 * (1.0 + 2.0 * t) + h23 * m2 * t) * (1.0 - t) *  in lookupTonemapGain()
389                             double y2 = maxOutLumi * 0.45;  in lookupTonemapGain()  local
394                             double c2 = y2 / 2.0;  in lookupTonemapGain()
412                                         t * t * y2;  in lookupTonemapGain()
416                                 targetNits = (1.0 - t) * (1.0 - t) * y2 + 2.0 * (1.0 - t) * t * c3 +  in lookupTonemapGain()
647         const double y2 = maxOutLumi * 0.9;  in lookupTonemapGain()  local
653         const double slope2 = (y2 - y1) / (greyNorm2 - greyNorm1);  in lookupTonemapGain()
654         const double slope3 = (y3 - y2) / (greyNorm3 - greyNorm2);  in lookupTonemapGain()
697                                 targetNits = (greyNits - greyNorm2) * slope2 + y2;  in lookupTonemapGain()