template <_Bool Clamp, class DF, class V>
auto OpsinAbsorbance(const DF df, const V& in0, const V& in1, const V& in2, V* out0, V* out1, V* out2) -> voidtemplate <class V>
auto OpsinAbsorbance(const V r, const V g, const V b, const float* premul_absorb, V* mixed0, V* mixed1, V* mixed2) -> void