X-Git-Url: https://git.sesse.net/?p=movit;a=blobdiff_plain;f=vignette_effect.h;h=c9a08bfd8f85091ec711175b274de77cb9b09359;hp=b8e0f68c7f1c5cfe16bc82fef2d9c5abcb9fd83f;hb=dae484d2ac79b828fe31d7416fc5838a6d3341ef;hpb=17c083aad45a10df14c38cfe879a87220dfd4fb9

diff --git a/vignette_effect.h b/vignette_effect.h
index b8e0f68..c9a08bf 100644
--- a/vignette_effect.h
+++ b/vignette_effect.h
@@ -1,6 +1,9 @@
 #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 {
@@ -8,7 +11,7 @@ public:
 	VignetteEffect();
 	std::string output_fragment_shader();
 
-	void set_uniforms(GLuint glsl_program_num, const std::string &prefix);
+	void set_uniforms(GLuint glsl_program_num, const std::string &prefix, unsigned *sampler_num);
 
 private:
 	Point2D center;