git.sesse.net Git - movit/blob - vignette_effect.cpp

   1 #include <GL/glew.h>
   2 #include <math.h>
   3
   4 #include "effect_util.h"
   5 #include "vignette_effect.h"
   6 #include "util.h"
   7
   8 VignetteEffect::VignetteEffect()
   9         : center(0.5f, 0.5f),
  10           radius(0.3f),
  11           inner_radius(0.3f)
  12 {
  13         register_vec2("center", (float *)&center);
  14         register_float("radius", (float *)&radius);
  15         register_float("inner_radius", (float *)&inner_radius);
  16 }
  17
  18 std::string VignetteEffect::output_fragment_shader()
  19 {
  20         return read_file("vignette_effect.frag");
  21 }
  22
  23 void VignetteEffect::set_gl_state(GLuint glsl_program_num, const std::string &prefix, unsigned *sampler_num)
  24 {
  25         Effect::set_gl_state(glsl_program_num, prefix, sampler_num);
  26
  27         set_uniform_float(glsl_program_num, prefix, "pihalf_div_radius", 0.5 * M_PI / radius);
  28
  29         Point2D aspect(16.0f / 9.0f, 1.0f);  // FIXME
  30         set_uniform_vec2(glsl_program_num, prefix, "aspect_correction", (float *)&aspect);
  31 }