1 #ifndef _SATURATION_EFFECT_H
2 #define _SATURATION_EFFECT_H 1
4 // A simple desaturation/saturation effect. We use the Rec. 709
5 // definition of luminance (in linear light, of course) and linearly
6 // interpolate between that (saturation=0) and the original signal
7 // (saturation=1). Extrapolating that curve further (ie., saturation > 1)
8 // gives us increased saturation if so desired.
12 class SaturationEffect : public Effect {
15 virtual std::string effect_type_id() const { return "SaturationEffect"; }
16 std::string output_fragment_shader();
22 #endif // !defined(_SATURATION_EFFECT_H)