// Note that Movit's internal formats generally do not have enough accuracy
// for 12-bit input or output.
-#include <GL/glew.h>
+#include <epoxy/gl.h>
#include <string>
#include "effect.h"
#include "image_format.h"
+namespace movit {
+
class GammaExpansionEffect : public Effect {
private:
// Should not be instantiated by end users.
friend class EffectChain;
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);
+ std::string effect_type_id() const override { return "GammaExpansionEffect"; }
+ std::string output_fragment_shader() override;
+ void set_gl_state(GLuint glsl_program_num, const std::string &prefix, unsigned *sampler_num) override;
- virtual bool needs_linear_light() const { return false; }
- virtual bool needs_srgb_primaries() const { return false; }
+ bool needs_linear_light() const override { return false; }
+ bool needs_srgb_primaries() const override { return false; }
+ bool strong_one_to_one_sampling() const override { return true; }
// Actually processes its input in a nonlinear fashion,
// but does not touch alpha, and we are a special case anyway.
- virtual AlphaHandling alpha_handling() const { return DONT_CARE_ALPHA_TYPE; }
+ AlphaHandling alpha_handling() const override { return DONT_CARE_ALPHA_TYPE; }
private:
GammaCurve source_curve;
+ float uniform_linear_scale, uniform_c[5], uniform_beta;
};
+} // namespace movit
+
#endif // !defined(_MOVIT_GAMMA_EXPANSION_EFFECT_H)