#ifndef _GAMMA_COMPRESSION_EFFECT_H
#define _GAMMA_COMPRESSION_EFFECT_H 1
+// An effect to convert linear light to the given gamma curve,
+// typically inserted by the framework automatically at the end
+// of the processing chain.
+//
+// Currently supports sRGB and Rec. 601/709.
+
#include "effect.h"
#include "effect_chain.h"
+#define COMPRESSION_CURVE_SIZE 4096
+
class GammaCompressionEffect : public Effect {
public:
GammaCompressionEffect();
- std::string output_glsl();
+ virtual std::string effect_type_id() const { return "GammaCompressionEffect"; }
+ std::string output_fragment_shader();
+
+ virtual bool needs_srgb_primaries() const { return false; }
+
+ // Actually needs postmultiplied input as well as outputting it.
+ // EffectChain will take care of that.
+ virtual AlphaHandling alpha_handling() const { return OUTPUT_ALPHA_POSTMULTIPLIED; }
private:
GammaCurve destination_curve;
+ float compression_curve[COMPRESSION_CURVE_SIZE];
};
#endif // !defined(_GAMMA_COMPRESSION_EFFECT_H)