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 }
  18
  19 string ComplexModulateEffect::output_fragment_shader()
  20 {
  21         return read_file("complex_modulate_effect.frag");
  22 }
  23
  24 void ComplexModulateEffect::set_gl_state(GLuint glsl_program_num, const string &prefix, unsigned *sampler_num)
  25 {
  26         Effect::set_gl_state(glsl_program_num, prefix, sampler_num);
  27
  28         float num_repeats[] = { float(num_repeats_x), float(num_repeats_y) };
  29         set_uniform_vec2(glsl_program_num, prefix, "num_repeats", num_repeats);
  30
  31         // Set the secondary input to repeat (and nearest while we're at it).
  32         Node *self = chain->find_node_for_effect(this);
  33         glActiveTexture(chain->get_input_sampler(self, 1));
  34         check_error();
  35         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
  36         check_error();
  37         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
  38         check_error();
  39         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
  40         check_error();
  41         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
  42         check_error();
  43 }
  44
  45 void ComplexModulateEffect::inform_input_size(unsigned input_num, unsigned width, unsigned height)
  46 {
  47         if (input_num == 0) {
  48                 primary_input_width = width;
  49                 primary_input_height = height;
  50         }
  51 }
  52
  53 void ComplexModulateEffect::get_output_size(unsigned *width, unsigned *height,
  54                                             unsigned *virtual_width, unsigned *virtual_height) const
  55 {
  56         *width = *virtual_width = primary_input_width;
  57         *height = *virtual_height = primary_input_height;
  58 }
  59
  60 }  // namespace movit