- 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;