X-Git-Url: https://git.sesse.net/?p=movit;a=blobdiff_plain;f=vignette_effect.h;h=2239f969b536d6500fc1cf097b02a9cfcdf7127f;hp=82c648cf7b3f834ee876b8dbb89dac3150f4820f;hb=HEAD;hpb=2ced784c6599cb0b21427481ee17f4c8f6afdada

diff --git a/vignette_effect.h b/vignette_effect.h
index 82c648c..2239f96 100644
--- a/vignette_effect.h
+++ b/vignette_effect.h
@@ -1,18 +1,36 @@
-#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 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 output_fragment_shader();
+	std::string effect_type_id() const override { return "VignetteEffect"; }
+	std::string output_fragment_shader() override;
 
-	void set_uniforms(GLuint glsl_program_num, const std::string &prefix, unsigned *sampler_num);
+	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;
 };
 
-#endif // !defined(_VIGNETTE_EFFECT_H)
+}  // namespace movit
+
+#endif // !defined(_MOVIT_VIGNETTE_EFFECT_H)