/usr/include/movit/vignette_effect.h is in libmovit-dev 1.6.1-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 | #ifndef _MOVIT_VIGNETTE_EFFECT_H
#define _MOVIT_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 <epoxy/gl.h>
#include <string>
#include "effect.h"
namespace movit {
class VignetteEffect : public Effect {
public:
VignetteEffect();
std::string effect_type_id() const override { return "VignetteEffect"; }
std::string output_fragment_shader() override;
bool needs_srgb_primaries() const override { return false; }
AlphaHandling alpha_handling() const override { return DONT_CARE_ALPHA_TYPE; }
bool strong_one_to_one_sampling() const override { return true; }
void inform_input_size(unsigned input_num, unsigned width, unsigned height) override;
void set_gl_state(GLuint glsl_program_num, const std::string &prefix, unsigned *sampler_num) override;
private:
Point2D center;
Point2D uniform_aspect_correction, uniform_flipped_center;
float radius, inner_radius;
float uniform_pihalf_div_radius;
};
} // namespace movit
#endif // !defined(_MOVIT_VIGNETTE_EFFECT_H)
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