git.mutantstargoat.com Git - demo/blob - src/vulkan/vk.cc

   1 #define GLFW_INCLUDE_VULKAN
   2 #include <GLFW/glfw3.h>
   3
   4 #include <alloca.h>
   5 #include <stdio.h>
   6 #include <string.h>
   7 #include <string>
   8 #include <vector>
   9
  10 #include "gfxapi.h"
  11 #include "vkutil.h"
  12
  13 /* global variables */
  14 extern GLFWwindow *win;
  15 extern int win_w;
  16 extern int win_h;
  17
  18 /* static functions */
  19 static void error_callback(int error, const char *descr);
  20 static void reshape(int width, int height);
  21
  22 bool init_vulkan()
  23 {
  24         if(!glfwInit()) {
  25                 fprintf(stderr, "Failed to initialize GLFW.\n");
  26                 return false;
  27         }
  28
  29         if(!glfwVulkanSupported()) {
  30                 fprintf(stderr, "No Vulkan support on the device.\n");
  31                 return false;
  32         }
  33
  34         glfwSetErrorCallback(error_callback);
  35
  36         if(!vku_create_device()) {
  37                 fprintf(stderr, "Failed to initialize vulkan.\n");
  38                 return false;
  39         }
  40
  41         if(!glfwGetPhysicalDevicePresentationSupport(vkinst, vkpdev, vkqfamily)) {
  42                 fprintf(stderr, "Presentation support not found.\n");
  43                 return false;
  44         }
  45
  46         glfwWindowHint(GLFW_CLIENT_API, GLFW_NO_API);
  47         if(!(win = glfwCreateWindow(win_w, win_h, "vkcow", 0, 0))) {
  48                 fprintf(stderr, "Failed to create window.\n");
  49                 return false;
  50         }
  51
  52         if(VkResult err = glfwCreateWindowSurface(vkinst, win, 0, &vksurface)) {
  53                 fprintf(stderr, "Failed to create KHR surface: %s\n", vku_get_vulkan_error_str(err));
  54                 return false;
  55         }
  56
  57         gfx_reshape = reshape;
  58
  59         return true;
  60 }
  61
  62 void cleanup_vulkan()
  63 {
  64         //TODOs according to the book:
  65         // 1- make sure all threads have been terminated (when I add threads)
  66
  67         // 2- destroy objects in *reverse* order
  68         vkDestroySurfaceKHR(vkinst, vksurface, 0);
  69
  70         vku_cleanup();
  71 }
  72
  73 static void error_callback(int error, const char *description)
  74 {
  75         fprintf(stderr, "GLFW error %d: %s.\n", error, description);
  76 }
  77
  78 static void reshape(int width, int height)
  79 {
  80         VkSwapchainKHR sc;
  81         if(!(sc = vku_create_swapchain(vksurface, width, height, 2, VK_PRESENT_MODE_FIFO_KHR,
  82                                        vkswapchain))) {
  83                 fprintf(stderr, "Failed to create %dx%d double-buffered swapchain\n", width, height);
  84                 return;
  85         }
  86         vkswapchain = sc;
  87
  88         free(vkswapchain_images);
  89         vkswapchain_images = vku_get_swapchain_images(sc, 0);
  90         vknext_swapchain_image = vku_get_next_image(vkswapchain);
  91 }