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

   1 #include <epoxy/gl.h>
   2
   3 #include "complex_modulate_effect.h"
   4 #include "effect_chain.h"
   5 #include "effect_util.h"
   6 #include "util.h"
   7
   8 using namespace std;
   9
  10 namespace movit {
  11
  12 ComplexModulateEffect::ComplexModulateEffect()
  13         : num_repeats_x(1), num_repeats_y(1)
  14 {
  15         register_int("num_repeats_x", &num_repeats_x);
  16         register_int("num_repeats_y", &num_repeats_y);
  17         register_vec2("num_repeats", uniform_num_repeats);
  18 }
  19
  20 string ComplexModulateEffect::output_fragment_shader()
  21 {
  22         return read_file("complex_modulate_effect.frag");
  23 }
  24
  25 void ComplexModulateEffect::set_gl_state(GLuint glsl_program_num, const string &prefix, unsigned *sampler_num)
  26 {
  27         Effect::set_gl_state(glsl_program_num, prefix, sampler_num);
  28
  29         uniform_num_repeats[0] = float(num_repeats_x);
  30         uniform_num_repeats[1] = float(num_repeats_y);
  31
  32         // Set the secondary input to repeat (and nearest while we're at it).
  33         Node *self = chain->find_node_for_effect(this);
  34         glActiveTexture(chain->get_input_sampler(self, 1));
  35         check_error();
  36         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
  37         check_error();
  38         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
  39         check_error();
  40         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
  41         check_error();
  42         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
  43         check_error();
  44 }
  45
  46 void ComplexModulateEffect::inform_input_size(unsigned input_num, unsigned width, unsigned height)
  47 {
  48         if (input_num == 0) {
  49                 primary_input_width = width;
  50                 primary_input_height = height;
  51         }
  52 }
  53
  54 void ComplexModulateEffect::get_output_size(unsigned *width, unsigned *height,
  55                                             unsigned *virtual_width, unsigned *virtual_height) const
  56 {
  57         *width = *virtual_width = primary_input_width;
  58         *height = *virtual_height = primary_input_height;
  59 }
  60
  61 }  // namespace movit