X-Git-Url: https://git.sesse.net/?p=movit;a=blobdiff_plain;f=vignette_effect.h;h=a39470398a0dba9cda171f34cf4f96c2ec04411b;hp=6caff3616cdaff6d732e34107edc04f0e700d94f;hb=a770ba7526844f395b08625480befad83b8fcadf;hpb=f4516cf70e80bf1153759919c8b2ab1cee37d9ec diff --git a/vignette_effect.h b/vignette_effect.h index 6caff36..a394703 100644 --- a/vignette_effect.h +++ b/vignette_effect.h @@ -1,14 +1,21 @@ #ifndef _VIGNETTE_EFFECT_H #define _VIGNETTE_EFFECT_H 1 +// A circular vignette, falling off as cos² of the distance from the center +// (the classic formula for approximating a real lens). + #include "effect.h" class VignetteEffect : public Effect { public: VignetteEffect(); - std::string output_glsl(); + 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_uniforms(GLhandleARB glsl_program_num, const std::string &prefix); + void set_gl_state(GLuint glsl_program_num, const std::string &prefix, unsigned *sampler_num); private: Point2D center;