339 lines
11 KiB
C++
339 lines
11 KiB
C++
#define GLFW_INCLUDE_VULKAN
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#include <GLFW/glfw3.h>
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#include <iostream>
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#include <stdexcept>
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#include <vector>
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#include <cstring>
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#include <cstdlib>
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#include <optional>
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#include <set>
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const uint32_t WIDTH = 800;
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const uint32_t HEIGHT = 600;
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const std::vector<const char*> validationLayers = {
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"VK_LAYER_KHRONOS_validation"
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};
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#ifdef NDEBUG
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const bool enableValidationLayers = false;
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#else
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const bool enableValidationLayers = true;
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#endif
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VkResult CreateDebugUtilsMessengerEXT(VkInstance instance, const VkDebugUtilsMessengerCreateInfoEXT* pCreateInfo, const VkAllocationCallbacks* pAllocator, VkDebugUtilsMessengerEXT* pDebugMessenger) {
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auto func = (PFN_vkCreateDebugUtilsMessengerEXT) vkGetInstanceProcAddr(instance, "vkCreateDebugUtilsMessengerEXT");
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if (func != nullptr) {
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return func(instance, pCreateInfo, pAllocator, pDebugMessenger);
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} else {
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return VK_ERROR_EXTENSION_NOT_PRESENT;
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}
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}
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void DestroyDebugUtilsMessengerEXT(VkInstance instance, VkDebugUtilsMessengerEXT debugMessenger, const VkAllocationCallbacks* pAllocator) {
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auto func = (PFN_vkDestroyDebugUtilsMessengerEXT) vkGetInstanceProcAddr(instance, "vkDestroyDebugUtilsMessengerEXT");
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if (func != nullptr) {
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func(instance, debugMessenger, pAllocator);
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}
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}
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struct QueueFamilyIndices {
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std::optional<uint32_t> graphicsFamily;
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std::optional<uint32_t> presentFamily;
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bool isComplete() {
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return graphicsFamily.has_value() && presentFamily.has_value();
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}
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};
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class HelloTriangleApplication {
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public:
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void run() {
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initWindow();
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initVulkan();
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mainLoop();
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cleanup();
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}
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private:
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GLFWwindow* window;
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VkInstance instance;
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VkDebugUtilsMessengerEXT debugMessenger;
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VkSurfaceKHR surface;
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VkPhysicalDevice physicalDevice = VK_NULL_HANDLE;
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VkDevice device;
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VkQueue graphicsQueue;
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VkQueue presentQueue;
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void initWindow() {
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glfwInit();
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glfwWindowHint(GLFW_CLIENT_API, GLFW_NO_API);
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glfwWindowHint(GLFW_RESIZABLE, GLFW_FALSE);
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window = glfwCreateWindow(WIDTH, HEIGHT, "Vulkan", nullptr, nullptr);
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}
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void initVulkan() {
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createInstance();
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setupDebugMessenger();
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createSurface();
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pickPhysicalDevice();
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createLogicalDevice();
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}
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void mainLoop() {
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while (!glfwWindowShouldClose(window)) {
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glfwPollEvents();
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}
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}
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void cleanup() {
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vkDestroyDevice(device, nullptr);
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if (enableValidationLayers) {
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DestroyDebugUtilsMessengerEXT(instance, debugMessenger, nullptr);
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}
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vkDestroySurfaceKHR(instance, surface, nullptr);
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vkDestroyInstance(instance, nullptr);
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glfwDestroyWindow(window);
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glfwTerminate();
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}
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void createInstance() {
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if (enableValidationLayers && !checkValidationLayerSupport()) {
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throw std::runtime_error("validation layers requested, but not available!");
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}
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VkApplicationInfo appInfo{};
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appInfo.sType = VK_STRUCTURE_TYPE_APPLICATION_INFO;
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appInfo.pApplicationName = "Hello Triangle";
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appInfo.applicationVersion = VK_MAKE_VERSION(1, 0, 0);
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appInfo.pEngineName = "No Engine";
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appInfo.engineVersion = VK_MAKE_VERSION(1, 0, 0);
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appInfo.apiVersion = VK_API_VERSION_1_0;
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VkInstanceCreateInfo createInfo{};
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createInfo.sType = VK_STRUCTURE_TYPE_INSTANCE_CREATE_INFO;
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createInfo.pApplicationInfo = &appInfo;
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auto extensions = getRequiredExtensions();
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createInfo.enabledExtensionCount = static_cast<uint32_t>(extensions.size());
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createInfo.ppEnabledExtensionNames = extensions.data();
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VkDebugUtilsMessengerCreateInfoEXT debugCreateInfo{};
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if (enableValidationLayers) {
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createInfo.enabledLayerCount = static_cast<uint32_t>(validationLayers.size());
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createInfo.ppEnabledLayerNames = validationLayers.data();
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populateDebugMessengerCreateInfo(debugCreateInfo);
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createInfo.pNext = (VkDebugUtilsMessengerCreateInfoEXT*) &debugCreateInfo;
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} else {
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createInfo.enabledLayerCount = 0;
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createInfo.pNext = nullptr;
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}
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if (vkCreateInstance(&createInfo, nullptr, &instance) != VK_SUCCESS) {
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throw std::runtime_error("failed to create instance!");
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}
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}
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void populateDebugMessengerCreateInfo(VkDebugUtilsMessengerCreateInfoEXT& createInfo) {
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createInfo = {};
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createInfo.sType = VK_STRUCTURE_TYPE_DEBUG_UTILS_MESSENGER_CREATE_INFO_EXT;
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createInfo.messageSeverity = VK_DEBUG_UTILS_MESSAGE_SEVERITY_VERBOSE_BIT_EXT | VK_DEBUG_UTILS_MESSAGE_SEVERITY_WARNING_BIT_EXT | VK_DEBUG_UTILS_MESSAGE_SEVERITY_ERROR_BIT_EXT;
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createInfo.messageType = VK_DEBUG_UTILS_MESSAGE_TYPE_GENERAL_BIT_EXT | VK_DEBUG_UTILS_MESSAGE_TYPE_VALIDATION_BIT_EXT | VK_DEBUG_UTILS_MESSAGE_TYPE_PERFORMANCE_BIT_EXT;
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createInfo.pfnUserCallback = debugCallback;
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}
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void setupDebugMessenger() {
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if (!enableValidationLayers) return;
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VkDebugUtilsMessengerCreateInfoEXT createInfo;
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populateDebugMessengerCreateInfo(createInfo);
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if (CreateDebugUtilsMessengerEXT(instance, &createInfo, nullptr, &debugMessenger) != VK_SUCCESS) {
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throw std::runtime_error("failed to set up debug messenger!");
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}
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}
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void createSurface() {
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if (glfwCreateWindowSurface(instance, window, nullptr, &surface) != VK_SUCCESS) {
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throw std::runtime_error("failed to create window surface!");
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}
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}
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void pickPhysicalDevice() {
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uint32_t deviceCount = 0;
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vkEnumeratePhysicalDevices(instance, &deviceCount, nullptr);
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if (deviceCount == 0) {
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throw std::runtime_error("failed to find GPUs with Vulkan support!");
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}
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std::vector<VkPhysicalDevice> devices(deviceCount);
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vkEnumeratePhysicalDevices(instance, &deviceCount, devices.data());
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for (const auto& device : devices) {
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if (isDeviceSuitable(device)) {
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physicalDevice = device;
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break;
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}
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}
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if (physicalDevice == VK_NULL_HANDLE) {
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throw std::runtime_error("failed to find a suitable GPU!");
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}
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}
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void createLogicalDevice() {
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QueueFamilyIndices indices = findQueueFamilies(physicalDevice);
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std::vector<VkDeviceQueueCreateInfo> queueCreateInfos;
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std::set<uint32_t> uniqueQueueFamilies = {
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indices.graphicsFamily.value(),
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indices.presentFamily.value()
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};
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float queuePriority = 1.0f;
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for (uint32_t queueFamily : uniqueQueueFamilies) {
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VkDeviceQueueCreateInfo queueCreateInfo{};
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queueCreateInfo.sType = VK_STRUCTURE_TYPE_DEVICE_QUEUE_CREATE_INFO;
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queueCreateInfo.queueFamilyIndex = queueFamily;
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queueCreateInfo.queueCount = 1;
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queueCreateInfo.pQueuePriorities = &queuePriority;
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queueCreateInfos.push_back(queueCreateInfo);
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}
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VkPhysicalDeviceFeatures deviceFeatures{};
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VkDeviceCreateInfo createInfo{};
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createInfo.sType = VK_STRUCTURE_TYPE_DEVICE_CREATE_INFO;
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createInfo.queueCreateInfoCount = static_cast<uint32_t>(queueCreateInfos.size());
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createInfo.pQueueCreateInfos = queueCreateInfos.data();
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createInfo.pEnabledFeatures = &deviceFeatures;
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createInfo.enabledExtensionCount = 0;
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if (enableValidationLayers) {
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createInfo.enabledLayerCount = static_cast<uint32_t>(validationLayers.size());
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createInfo.ppEnabledLayerNames = validationLayers.data();
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} else {
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createInfo.enabledLayerCount = 0;
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}
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if (vkCreateDevice(physicalDevice, &createInfo, nullptr, &device) != VK_SUCCESS) {
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throw std::runtime_error("failed to create logical device!");
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}
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vkGetDeviceQueue(device, indices.graphicsFamily.value(), 0, &graphicsQueue);
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vkGetDeviceQueue(device, indices.presentFamily.value(), 0, &presentQueue);
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}
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bool isDeviceSuitable(VkPhysicalDevice device) {
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QueueFamilyIndices indices = findQueueFamilies(device);
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return indices.isComplete();
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}
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QueueFamilyIndices findQueueFamilies(VkPhysicalDevice device) {
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QueueFamilyIndices indices;
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uint32_t queueFamilyCount = 0;
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vkGetPhysicalDeviceQueueFamilyProperties(device, &queueFamilyCount, nullptr);
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std::vector<VkQueueFamilyProperties> queueFamilies(queueFamilyCount);
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vkGetPhysicalDeviceQueueFamilyProperties(device, &queueFamilyCount, queueFamilies.data());
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int i = 0;
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for (const auto& queueFamily : queueFamilies) {
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if (queueFamily.queueFlags & VK_QUEUE_GRAPHICS_BIT) {
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indices.graphicsFamily = i;
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}
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VkBool32 presentSupport = false;
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vkGetPhysicalDeviceSurfaceSupportKHR(device, i, surface, &presentSupport);
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if (presentSupport) {
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indices.presentFamily = i;
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}
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if (indices.isComplete()) {
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break;
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}
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i++;
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}
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return indices;
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}
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std::vector<const char*> getRequiredExtensions() {
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uint32_t glfwExtensionCount = 0;
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const char** glfwExtensions;
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glfwExtensions = glfwGetRequiredInstanceExtensions(&glfwExtensionCount);
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std::vector<const char*> extensions(glfwExtensions, glfwExtensions + glfwExtensionCount);
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if (enableValidationLayers) {
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extensions.push_back(VK_EXT_DEBUG_UTILS_EXTENSION_NAME);
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}
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return extensions;
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}
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bool checkValidationLayerSupport() {
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uint32_t layerCount;
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vkEnumerateInstanceLayerProperties(&layerCount, nullptr);
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std::vector<VkLayerProperties> availableLayers(layerCount);
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vkEnumerateInstanceLayerProperties(&layerCount, availableLayers.data());
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for (const char* layerName : validationLayers) {
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bool layerFound = false;
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for (const auto& layerProperties : availableLayers) {
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if (strcmp(layerName, layerProperties.layerName) == 0) {
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layerFound = true;
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break;
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}
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}
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if (!layerFound) {
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return false;
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}
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}
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return true;
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}
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static VKAPI_ATTR VkBool32 VKAPI_CALL debugCallback(VkDebugUtilsMessageSeverityFlagBitsEXT messageSeverity, VkDebugUtilsMessageTypeFlagsEXT messageType, const VkDebugUtilsMessengerCallbackDataEXT* pCallbackData, void* pUserData) {
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std::cerr << "validation layer: " << pCallbackData->pMessage << std::endl;
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return VK_FALSE;
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}
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};
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int main() {
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HelloTriangleApplication app;
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try {
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app.run();
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} catch (const std::exception& e) {
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std::cerr << e.what() << std::endl;
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return EXIT_FAILURE;
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}
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return EXIT_SUCCESS;
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}
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