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
  21 Renderer::~Renderer()
  22 {
  23 }
  24
  25 bool Renderer::create()
  26 {
  27         if(!(sprog = sdr_man->create_shader_program("default.v.glsl", "default.f.glsl"))) {
  28                 return false;
  29         }
  30
  31         return true;
  32 }
  33
  34 void Renderer::draw() const
  35 {
  36         if(!camera || !scene)
  37                 return;
  38
  39         glClearColor(0.5, 0.5, 0.5, 1);
  40         glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
  41
  42         if(!sprog->link())
  43                 return;
  44
  45         sprog->use();
  46
  47         for(size_t i=0; i<scene->objects.size(); i++) {
  48                 draw_object(scene->objects[i]);
  49         }
  50 }
  51
  52 void Renderer::draw_object(Object *object) const
  53 {
  54         Material *m = object->material;
  55         /* diffuse */
  56         int diff_loc;
  57         if((diff_loc = sprog->get_uniform_location("diffuse")) != -1) {
  58                 sprog->set_uniformf(diff_loc, m->diffuse.x, m->diffuse.y, m->diffuse.z, 1);
  59         }
  60         /* specular */
  61         int spec_loc;
  62         if((spec_loc = sprog->get_uniform_location("specular")) != -1) {
  63                 sprog->set_uniformf(spec_loc, m->specular.x, m->specular.y, m->specular.z, 1);
  64         }
  65         /* specular exponent */
  66         int shin_loc;
  67         if((shin_loc = sprog->get_uniform_location("shininess")) != -1) {
  68                 sprog->set_uniformf(shin_loc, m->shininess);
  69         }
  70         /* texture */
  71         if (m->dtex)
  72                 m->dtex->bind();
  73
  74         // Mat4 mmviewproj = mprojection * camera->get_view_matrix() * object->transform;
  75         Mat4 mmviewproj = object->transform * camera->get_view_matrix() * mprojection;
  76         // printf("\nmatrices:\n");
  77         // mprojection.print();
  78         // camera->get_view_matrix().print();
  79         // object->transform.print();
  80         // mmodelview.print();
  81
  82         int mmviewproj_loc;
  83         if((mmviewproj_loc = sprog->get_uniform_location("mmviewproj")) != -1) {
  84                 sprog->set_uniform_matrix(mmviewproj_loc, mmviewproj);
  85         }
  86
  87         Mat4 mview = camera->get_view_matrix(); //* object->transform;
  88         int mview_loc;
  89         if((mview_loc = sprog->get_uniform_location("mview")) != -1) {
  90                 sprog->set_uniform_matrix(mview_loc, mview);
  91         }
  92
  93         object->mesh->update_vertex_data();
  94         object->mesh->draw();
  95 }