class VignetteEffect : public Effect {
public:
VignetteEffect();
+ virtual std::string effect_type_id() const { return "VignetteEffect"; }
std::string output_fragment_shader();
virtual bool needs_srgb_primaries() const { return false; }
+ virtual AlphaHandling alpha_handling() const { return DONT_CARE_ALPHA_TYPE; }
void set_gl_state(GLuint glsl_program_num, const std::string &prefix, unsigned *sampler_num);