Added an overlay effect, implementing the atop effect.

[movit] / vignette_effect.cpp

diff --git a/vignette_effect.cpp b/vignette_effect.cpp
index b3a6c04ed6678b2e167c39aeaacd6319143256ba..83aaa10e9c2ac51c6eb44b9be7cf104ac773fd71 100644 (file)
--- a/vignette_effect.cpp
+++ b/vignette_effect.cpp
@@ -1,8 +1,5 @@
-#define GL_GLEXT_PROTOTYPES 1
-
 #include <math.h>
-#include <GL/gl.h>
-#include <GL/glext.h>
+#include <GL/glew.h>
 
 #include "vignette_effect.h"
 #include "util.h"
@@ -26,7 +23,7 @@ void VignetteEffect::set_gl_state(GLuint glsl_program_num, const std::string &pr
 {
        Effect::set_gl_state(glsl_program_num, prefix, sampler_num);
 
-       set_uniform_float(glsl_program_num, prefix, "inv_radius", 1.0f / radius);
+       set_uniform_float(glsl_program_num, prefix, "pihalf_div_radius", 0.5 * M_PI / radius);
 
        Point2D aspect(16.0f / 9.0f, 1.0f);  // FIXME
        set_uniform_vec2(glsl_program_num, prefix, "aspect_correction", (float *)&aspect);