git.mutantstargoat.com Git - demo/blob - src/renderer.cc

   1 #include <GL/glew.h>
   2
   3 #include "global.h"
   4
   5 #include "camera.h"
   6 #include "mesh.h"
   7 #include "object.h"
   8 #include "renderer.h"
   9 #include "scene.h"
  10 #include "shader.h"
  11 #include "shader_manager.h"
  12 #include "texture.h"
  13
  14 Renderer::Renderer()
  15 {
  16         scene = 0;
  17         camera = 0;
  18         sprog = 0;
  19
  20         skytex = 0;
  21         dskytex = 0;
  22 }
  23
  24 Renderer::~Renderer()
  25 {
  26 }
  27
  28 bool Renderer::create()
  29 {
  30         if(!(sprog = sdr_man->create_shader_program("default.v.glsl", "default.f.glsl"))) {
  31                 return false;
  32         }
  33
  34         if(!(sprog->link())) {
  35                 return false;
  36         }
  37
  38         /* getting material uniform locations: diffuse, specular, specular exponent (strength) */
  39
  40         if((diff_loc = sprog->get_uniform_location("diffuse")) == -1) {
  41                 fprintf(stderr, "Invalid uniform location: can't find \"diffuse\".\n");
  42                 return false;
  43         }
  44
  45         if((spec_loc = sprog->get_uniform_location("specular")) == -1) {
  46                 fprintf(stderr, "Invalid uniform location: can't find \"specular\".\n");
  47                 return false;
  48         }
  49
  50         if((shin_loc = sprog->get_uniform_location("shininess")) == -1) {
  51                 fprintf(stderr, "Invalid uniform location: can't find \"shininess\".\n");
  52                 return false;
  53         }
  54
  55         /* uniform locations for matrices */
  56
  57         if((mmviewproj_loc = sprog->get_uniform_location("mmviewproj")) == -1) {
  58                 fprintf(stderr, "Invalid uniform location: can't find \"mmviewproj\".\n");
  59                 return false;
  60         }
  61
  62         if((mview_loc = sprog->get_uniform_location("mview")) == -1) {
  63                 fprintf(stderr, "Invalid uniform location: can't find \"mview\".\n");
  64                 return false;
  65         }
  66
  67         return true;
  68 }
  69
  70 void Renderer::draw() const
  71 {
  72         if(!camera || !scene)
  73                 return;
  74
  75         if(!sprog->link())
  76                 return;
  77
  78         sprog->use();
  79
  80         for(size_t i=0; i<scene->objects.size(); i++) {
  81                 draw_object(scene->objects[i]);
  82         }
  83 }
  84
  85 void Renderer::draw_object(Object *object) const
  86 {
  87         Material *m = object->material;
  88
  89         /* setting uniforms for material */
  90
  91         sprog->set_uniformf(diff_loc, m->diffuse.x, m->diffuse.y, m->diffuse.z, 1);
  92         sprog->set_uniformf(spec_loc, m->specular.x, m->specular.y, m->specular.z, 1);
  93         sprog->set_uniformf(shin_loc, m->shininess);
  94
  95         /* texture */
  96
  97         if(m->dtex)
  98                 m->dtex->bind();
  99
 100         /* setting uniforms for matrices */
 101
 102         Mat4 mmviewproj = object->transform * camera->get_view_matrix() * mprojection;
 103         sprog->set_uniform_matrix(mmviewproj_loc, mmviewproj);
 104
 105         Mat4 mview = object->transform * camera->get_view_matrix();
 106         sprog->set_uniform_matrix(mview_loc, mview);
 107
 108         object->mesh->update_vertex_data();
 109         object->mesh->draw();
 110 }
 111
 112 void Renderer::set_sky_tex(Texture *stex)
 113 {
 114         skytex = stex;
 115 }
 116
 117 void Renderer::set_diffuse_sky_tex(Texture *dstex)
 118 {
 119         dskytex = dstex;
 120 }