+ 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);
+
+ virtual bool needs_linear_light() const { return false; }
+ virtual bool needs_srgb_primaries() const { return false; }