-#ifndef _VIGNETTE_EFFECT_H
-#define _VIGNETTE_EFFECT_H 1
+#ifndef _MOVIT_VIGNETTE_EFFECT_H
+#define _MOVIT_VIGNETTE_EFFECT_H 1
+
+// A circular vignette, falling off as cosĀ² 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 output_vertex_shader();
+ virtual std::string effect_type_id() const { return "VignetteEffect"; }
std::string output_fragment_shader();
- void set_uniforms(GLuint glsl_program_num, const std::string &prefix);
+ virtual bool needs_srgb_primaries() const { return false; }
+ virtual AlphaHandling alpha_handling() const { return DONT_CARE_ALPHA_TYPE; }
+
+ virtual void inform_input_size(unsigned input_num, unsigned width, unsigned height);
+ void set_gl_state(GLuint glsl_program_num, const std::string &prefix, unsigned *sampler_num);
private:
- Point2D center;
+ Point2D center, aspect_correction;
float radius, inner_radius;
};
-#endif // !defined(_VIGNETTE_EFFECT_H)
+} // namespace movit
+
+#endif // !defined(_MOVIT_VIGNETTE_EFFECT_H)