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

   1 #include <stdio.h>
   2 #include <stdlib.h>
   3 #include <string.h>
   4 #include <vector>
   5
   6 #include "object.h"
   7 #include "mesh.h"
   8 #include "scene.h"
   9
  10 #include "opengl/opengl.h"
  11 #include "vulkan/vk.h"
  12
  13 /* static functions */
  14
  15 static bool init();
  16 static void cleanup();
  17 static void display();
  18
  19 /* glfw callbacks */
  20 static void key_clbk(GLFWwindow *win, int key, int scancode, int action, int mods);
  21
  22 /* global variables */
  23 bool use_vulkan;
  24 GLFWwindow *win;
  25
  26 /* variables */
  27 static Scene scene;
  28
  29 int main(int argc, char **argv)
  30 {
  31         for(int i=0; i<argc; ++i) {
  32                 if(strcmp(argv[i], "-opengl") == 0) {
  33                         use_vulkan = false;
  34                         printf("Backend: OpenGL.\n");
  35                 }
  36                 else if(strcmp(argv[i], "-vulkan") == 0) {
  37                         use_vulkan = true;
  38                         printf("Backend: Vulkan.\n");
  39                 }
  40                 else {
  41                         printf("No backend specified. Using OpenGL.\n");
  42                 }
  43         }
  44
  45         if(!init()) {
  46                 fprintf(stderr, "Failed to initialize program.\n");
  47                 return 1;
  48         }
  49
  50         glfwSetKeyCallback(win, key_clbk);
  51
  52         while(!glfwWindowShouldClose(win)) {
  53                 display();
  54
  55                 glfwSwapBuffers(win);
  56                 glfwPollEvents();
  57         }
  58
  59         atexit(cleanup);
  60         return 0;
  61 }
  62
  63 static bool init()
  64 {
  65         if(use_vulkan) {
  66                 if(!init_vulkan())
  67                         return false;
  68         }
  69         else {
  70                 if(!init_opengl())
  71                         return false;
  72         }
  73
  74         if(!scene.load("data/spot/spot_control_mesh.obj")) {
  75                 fprintf(stderr, "Failed to load scene.\n");
  76                 return false;
  77         }
  78
  79         for(size_t i=0; i<scene.objects.size(); ++i) {
  80                 printf("object: %d\n", (int)i);
  81                 printf("mesh: %s\n", scene.objects[i]->mesh->name.c_str());
  82                 printf("material: %s\n", scene.objects[i]->material->name.c_str());
  83                 printf("transform:\n");
  84                 scene.objects[i]->transform.print();
  85         }
  86         return true;
  87 }
  88
  89 static void cleanup()
  90 {
  91         if(use_vulkan) {
  92                 cleanup_vulkan();
  93         }
  94         else {
  95                 cleanup_opengl();
  96         }
  97 }
  98
  99 static void key_clbk(GLFWwindow *win, int key, int scancode, int action, int mods)
 100 {
 101         if(key == GLFW_KEY_ESCAPE && action == GLFW_PRESS) {
 102                 glfwSetWindowShouldClose(win, GLFW_TRUE);
 103         }
 104 }
 105
 106 static void display()
 107 {
 108         if(use_vulkan) {
 109                 display_vulkan();
 110         }
 111         else {
 112                 display_opengl();
 113         }
 114 }