// typically inserted by the framework automatically at the beginning
// of the processing chain.
//
-// Currently supports sRGB and Rec. 601/709.
+// Currently supports sRGB, Rec. 601/709 and Rec. 2020 (10- and 12-bit).
+// Note that Movit's internal formats generally do not have enough accuracy
+// for 12-bit input or output.
+#include <epoxy/gl.h>
#include <string>
#include "effect.h"
#include "image_format.h"
-#define EXPANSION_CURVE_SIZE 256
+namespace movit {
class GammaExpansionEffect : public Effect {
private:
public:
virtual std::string effect_type_id() const { return "GammaExpansionEffect"; }
std::string output_fragment_shader();
+ virtual void set_gl_state(GLuint glsl_program_num, const std::string &prefix, unsigned *sampler_num);
virtual bool needs_linear_light() const { return false; }
virtual bool needs_srgb_primaries() const { return false; }
+ virtual bool one_to_one_sampling() const { return true; }
// Actually processes its input in a nonlinear fashion,
// but does not touch alpha, and we are a special case anyway.
private:
GammaCurve source_curve;
- float expansion_curve[EXPANSION_CURVE_SIZE];
+ float uniform_linear_scale, uniform_c[5], uniform_beta;
};
+} // namespace movit
+
#endif // !defined(_MOVIT_GAMMA_EXPANSION_EFFECT_H)