580 lines
22 KiB
C++
580 lines
22 KiB
C++
#if defined(__INTELLISENSE__) || !defined(USE_CPP20_MODULES)
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#include "vulkan/vulkan.hpp"
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#include <vulkan/vulkan_raii.hpp>
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#include <vulkan/vulkan_core.h>
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#else
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import vulkan_hpp;
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#endif
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#define GLFW_INCLUDE_VULKAN
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#include <GLFW/glfw3.h>
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#include <ios>
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#include <iostream>
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#include <fstream>
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#include <vector>
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#include <string>
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#include <stdexcept>
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#include <cstdlib>
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#include <cstdint>
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#include <limits>
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#include <algorithm>
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constexpr uint32_t WIDTH = 800;
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constexpr uint32_t HEIGHT = 600;
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const std::vector<char const *> validationLayers = {
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"VK_LAYER_KHRONOS_validation"
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};
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#ifdef NDEBUG
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constexpr bool enableValidationLayers = false;
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#else
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constexpr bool enableValidationLayers = true;
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#endif
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static std::vector<char> readFile(const std::string &filename) {
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std::ifstream file(filename, std::ios::ate | std::ios::binary);
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if (!file.is_open()) {
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throw std::runtime_error("failed to open file!");
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}
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std::vector<char> buffer(file.tellg());
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file.seekg(0, std::ios::beg);
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file.read(buffer.data(), static_cast<std::streamsize>(buffer.size()));
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file.close();
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return buffer;
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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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void initWindow() {
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glfwInit();
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// Don't create an OpenGL context
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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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createSurface();
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pickPhysicalDevice();
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createLogicalDevice();
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createSwapChain();
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createImageViews();
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createGraphicsPipeline();
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createCommandPool();
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createCommandBuffer();
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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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glfwDestroyWindow(window);
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glfwTerminate();
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}
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void createInstance() {
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constexpr vk::ApplicationInfo appInfo {
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.pApplicationName = "Hello Triangle",
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.applicationVersion = VK_MAKE_VERSION(1, 0, 0),
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.pEngineName = "No Engine",
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.engineVersion = VK_MAKE_VERSION(1, 0, 0),
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.apiVersion = vk::ApiVersion14,
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};
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// Get the required layers
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std::vector<char const*> requiredLayers;
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if (enableValidationLayers) {
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requiredLayers.assign(validationLayers.begin(), validationLayers.end());
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}
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// Check if the required layers are supported by the Vulkan implementation.
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auto layerProperties = context.enumerateInstanceLayerProperties();
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if (std::ranges::any_of(requiredLayers, [&layerProperties](auto const& requiredLayer) {
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return std::ranges::none_of(layerProperties,
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[requiredLayer](auto const& layerProperty)
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{ return strcmp(layerProperty.layerName, requiredLayer) == 0; });
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}))
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{
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throw std::runtime_error("One or more required layers are not supported!");
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}
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// Get the required instance extensions from GLFW.
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uint32_t glfwExtensionCount = 0;
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auto glfwExtensions = glfwGetRequiredInstanceExtensions(&glfwExtensionCount);
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// Check if the required GLFW extensions are supported by the Vulkan implementation.
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auto extensionProperties = context.enumerateInstanceExtensionProperties();
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for (uint32_t i = 0; i < glfwExtensionCount; ++i)
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{
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if (std::ranges::none_of(extensionProperties,
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[glfwExtension = glfwExtensions[i]](auto const& extensionProperty)
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{ return strcmp(extensionProperty.extensionName, glfwExtension) == 0; }))
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{
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throw std::runtime_error("Required GLFW extension not supported: " + std::string(glfwExtensions[i]));
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}
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}
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vk::InstanceCreateInfo createInfo {
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.pApplicationInfo = &appInfo,
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.enabledLayerCount = static_cast<uint32_t>(requiredLayers.size()),
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.ppEnabledLayerNames = requiredLayers.data(),
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.enabledExtensionCount = glfwExtensionCount,
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.ppEnabledExtensionNames = glfwExtensions,
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};
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instance = vk::raii::Instance(context, createInfo);
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}
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void createSurface() {
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VkSurfaceKHR _surface;
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if (glfwCreateWindowSurface(*instance, window, nullptr, &_surface) != 0) {
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throw std::runtime_error("failed to create window surface!");
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}
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surface = vk::raii::SurfaceKHR(instance, _surface);
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}
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void pickPhysicalDevice() {
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std::vector<const char*> deviceExtensions = {
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vk::KHRSwapchainExtensionName,
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vk::KHRSpirv14ExtensionName,
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vk::KHRSynchronization2ExtensionName,
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vk::KHRCreateRenderpass2ExtensionName,
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};
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auto devices = instance.enumeratePhysicalDevices();
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if (devices.empty()) {
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throw std::runtime_error("failed to find GPUs with Vulkan support!");
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}
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for (const auto &device : devices) {
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auto deviceProperties = device.getProperties();
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auto deviceFeatures = device.getFeatures();
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auto queueFamilies = device.getQueueFamilyProperties();
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auto extensions = device.enumerateDeviceExtensionProperties();
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bool isSuitable = deviceProperties.apiVersion >= VK_API_VERSION_1_3;
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bool extensionFound = true;
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const vk::QueueFamilyProperties *qf = nullptr;
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for (const auto &qfp : queueFamilies) {
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if ((qfp.queueFlags & vk::QueueFlagBits::eGraphics) != static_cast<vk::QueueFlags>(0)) {
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qf = &qfp;
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break;
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}
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}
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isSuitable = isSuitable && (qf != nullptr);
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for (const auto &extension : deviceExtensions) {
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auto extensionIter = std::ranges::find_if(extensions, [extension](auto const & ext) {return strcmp(ext.extensionName, extension) == 0;});
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extensionFound = extensionFound && extensionIter != extensions.end();
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}
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isSuitable = isSuitable && extensionFound;
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if (isSuitable) {
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physicalDevice = device;
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return;
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}
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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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std::vector<vk::QueueFamilyProperties> queueFamilyProperties = physicalDevice.getQueueFamilyProperties();
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graphicsQueueIndex = findQueueFamilies(physicalDevice);
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float queuePriority = 0.5f;
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vk::DeviceQueueCreateInfo deviceQueueCreateInfo {
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.queueFamilyIndex = graphicsQueueIndex,
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.queueCount = 1,
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.pQueuePriorities = &queuePriority,
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};
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// Create a chain of feature structures
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vk::StructureChain<vk::PhysicalDeviceFeatures2,
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vk::PhysicalDeviceVulkan13Features,
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vk::PhysicalDeviceVulkan11Features,
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vk::PhysicalDeviceExtendedDynamicStateFeaturesEXT> featureChain = {
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{}, // vk::PhysicalDeviceFeatures2 (empty for now)
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{.dynamicRendering = true }, // Enable dynamic rendering from Vulkan 1.3
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{.shaderDrawParameters = true }, // Enable shader draw parameters from Vulkan 1.2
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{.extendedDynamicState = true } // Enable extended dynamic state from the extension
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};
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std::vector<const char*> deviceExtensions = {
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vk::KHRSwapchainExtensionName,
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vk::KHRSpirv14ExtensionName,
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vk::KHRSynchronization2ExtensionName,
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vk::KHRCreateRenderpass2ExtensionName
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};
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vk::DeviceCreateInfo deviceCreateInfo {
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.pNext = &featureChain.get<vk::PhysicalDeviceFeatures2>(),
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.queueCreateInfoCount = 1,
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.pQueueCreateInfos = &deviceQueueCreateInfo,
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.enabledExtensionCount = static_cast<uint32_t>(deviceExtensions.size()),
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.ppEnabledExtensionNames = deviceExtensions.data(),
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};
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device = vk::raii::Device(physicalDevice, deviceCreateInfo);
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graphicsQueue = vk::raii::Queue(device, graphicsQueueIndex, 0);
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}
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void createSwapChain() {
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auto surfaceCapabilities = physicalDevice.getSurfaceCapabilitiesKHR(surface);
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swapChainSurfaceFormat = chooseSwapSurfaceFormat(physicalDevice.getSurfaceFormatsKHR(surface));
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swapChainExtent = chooseSwapExtent(surfaceCapabilities);
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auto minImageCount = std::max(3u, surfaceCapabilities.minImageCount);
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minImageCount = (surfaceCapabilities.maxImageCount > 0 &&
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minImageCount > surfaceCapabilities.maxImageCount) ?
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surfaceCapabilities.maxImageCount :
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minImageCount;
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vk::SwapchainCreateInfoKHR swapChainCreateInfo {
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.flags = vk::SwapchainCreateFlagsKHR(),
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.surface = surface,
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.minImageCount = minImageCount,
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.imageFormat = swapChainSurfaceFormat.format,
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.imageColorSpace = swapChainSurfaceFormat.colorSpace,
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.imageExtent = swapChainExtent,
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.imageArrayLayers = 1,
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.imageUsage = vk::ImageUsageFlagBits::eColorAttachment,
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.imageSharingMode = vk::SharingMode::eExclusive,
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.preTransform = surfaceCapabilities.currentTransform,
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.compositeAlpha = vk::CompositeAlphaFlagBitsKHR::eOpaque,
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.presentMode = chooseSwapPresentMode(physicalDevice.getSurfacePresentModesKHR(surface)),
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.clipped = true,
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.oldSwapchain = nullptr,
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};
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swapChain = vk::raii::SwapchainKHR(device, swapChainCreateInfo);
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swapChainImages = swapChain.getImages();
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swapChainImageFormat = swapChainSurfaceFormat.format;
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}
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void createImageViews() {
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swapChainImageViews.clear();
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vk::ImageViewCreateInfo imageViewCreateInfo{
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.viewType = vk::ImageViewType::e2D,
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.format = swapChainImageFormat,
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.subresourceRange = { vk::ImageAspectFlagBits::eColor, 0, 1, 0, 1 }
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};
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for (auto image : swapChainImages) {
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imageViewCreateInfo.image = image;
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swapChainImageViews.emplace_back(vk::raii::ImageView(device, imageViewCreateInfo));
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}
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}
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void createGraphicsPipeline() {
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vk::raii::ShaderModule shaderModule = createShaderModule(readFile("shaders/09_shader_base.spv"));
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vk::PipelineShaderStageCreateInfo vertShaderStageInfo = {
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.stage = vk::ShaderStageFlagBits::eVertex,
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.module = shaderModule,
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.pName = "vertMain",
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};
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vk::PipelineShaderStageCreateInfo fragShaderStageInfo = {
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.stage = vk::ShaderStageFlagBits::eFragment,
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.module = shaderModule,
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.pName = "fragMain",
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};
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vk::PipelineShaderStageCreateInfo shaderStages[] = {vertShaderStageInfo, fragShaderStageInfo};
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// Vertex input
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vk::PipelineVertexInputStateCreateInfo vertexInputInfo;
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// Input assembly
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vk::PipelineInputAssemblyStateCreateInfo inputAssembly = {
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.topology = vk::PrimitiveTopology::eTriangleList,
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};
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// Dynamic state
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std::vector<vk::DynamicState> dynamicStates = {
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vk::DynamicState::eViewport,
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vk::DynamicState::eScissor,
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};
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vk::PipelineDynamicStateCreateInfo dynamicState = {
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.dynamicStateCount = static_cast<uint32_t>(dynamicStates.size()),
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.pDynamicStates = dynamicStates.data(),
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};
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// No need to specify viewport and scissor because they will be specified dynamically
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vk::PipelineViewportStateCreateInfo viewportState = {
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.viewportCount = 1,
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.scissorCount = 1,
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};
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// Rasterisation
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vk::PipelineRasterizationStateCreateInfo rasterizer = {
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.depthClampEnable = vk::False,
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.rasterizerDiscardEnable = vk::False,
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.polygonMode = vk::PolygonMode::eFill,
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.cullMode = vk::CullModeFlagBits::eBack,
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.frontFace = vk::FrontFace::eClockwise,
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.depthBiasEnable = vk::False,
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.depthBiasSlopeFactor = 1.0f,
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.lineWidth = 1.0f
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};
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// Multisampling
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vk::PipelineMultisampleStateCreateInfo multisampling = {
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.rasterizationSamples = vk::SampleCountFlagBits::e1,
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.sampleShadingEnable = vk::False,
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};
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// Color blending
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vk::PipelineColorBlendAttachmentState colorBlendAttachment = {
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.blendEnable = vk::False,
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.colorWriteMask = vk::ColorComponentFlagBits::eR |
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vk::ColorComponentFlagBits::eG |
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vk::ColorComponentFlagBits::eB |
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vk::ColorComponentFlagBits::eA,
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};
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vk::PipelineColorBlendStateCreateInfo colorBlending = {
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.logicOpEnable = vk::False,
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.logicOp = vk::LogicOp::eCopy,
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.attachmentCount = 1,
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.pAttachments = &colorBlendAttachment,
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};
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// Pipeline layout
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vk::PipelineLayoutCreateInfo pipelineLayoutInfo = {
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.setLayoutCount = 0,
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.pushConstantRangeCount = 0,
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};
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pipelineLayout = vk::raii::PipelineLayout(device, pipelineLayoutInfo);
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// Dynamic rendering pipeline
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vk::PipelineRenderingCreateInfo pipelineRenderingCreateInfo = {
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.colorAttachmentCount = 1,
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.pColorAttachmentFormats = &swapChainImageFormat,
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};
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vk::GraphicsPipelineCreateInfo pipelineInfo = {
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.pNext = &pipelineRenderingCreateInfo,
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.stageCount = 2,
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.pStages = shaderStages,
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.pVertexInputState = &vertexInputInfo,
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.pInputAssemblyState = &inputAssembly,
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.pViewportState = &viewportState,
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.pRasterizationState = &rasterizer,
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.pMultisampleState = &multisampling,
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.pColorBlendState = &colorBlending,
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.pDynamicState = &dynamicState,
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.layout = pipelineLayout,
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.renderPass = nullptr,
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};
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// Create pipeline
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graphicsPipeline = vk::raii::Pipeline(device, nullptr, pipelineInfo);
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}
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void createCommandPool() {
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vk::CommandPoolCreateInfo poolInfo = {
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.flags = vk::CommandPoolCreateFlagBits::eResetCommandBuffer,
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.queueFamilyIndex = graphicsQueueIndex,
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};
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commandPool = vk::raii:: CommandPool(device, poolInfo);
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}
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void createCommandBuffer() {
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vk::CommandBufferAllocateInfo allocInfo = {
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.commandPool = commandPool,
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.level = vk::CommandBufferLevel::ePrimary,
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.commandBufferCount = 1,
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};
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commandBuffer = std::move(vk::raii::CommandBuffers(device, allocInfo).front());
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}
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void recordCommandBuffer(uint32_t imageIndex) {
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// Begin recording the command buffer
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commandBuffer.begin({});
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// Before starting rendering, transition the swapchain image to COLOR_ATTACHMENT_OPTIMAL
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transition_image_layout(
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imageIndex,
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vk::ImageLayout::eUndefined,
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vk::ImageLayout::eColorAttachmentOptimal,
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{}, // srcAccessMask (no need to wait for previous operations)
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vk::AccessFlagBits2::eColorAttachmentWrite, // dstAccessMask
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vk::PipelineStageFlagBits2::eColorAttachmentOutput, // srcStage
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vk::PipelineStageFlagBits2::eColorAttachmentOutput // dstStage
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);
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vk::ClearValue clearColor = vk::ClearColorValue(0.0f, 0.0f, 0.0f, 1.0f);
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vk::RenderingAttachmentInfo attachmentInfo = {
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.imageView = swapChainImageViews[imageIndex],
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.imageLayout = vk::ImageLayout::eColorAttachmentOptimal,
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.loadOp = vk::AttachmentLoadOp::eClear,
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.storeOp = vk::AttachmentStoreOp::eStore,
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.clearValue = clearColor,
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};
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vk::RenderingInfo renderingInfo = {
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.renderArea = { .offset = { 0, 0 }, .extent = swapChainExtent },
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.layerCount = 1,
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.colorAttachmentCount = 1,
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.pColorAttachments = &attachmentInfo,
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};
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commandBuffer.beginRendering(renderingInfo);
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commandBuffer.bindPipeline(vk::PipelineBindPoint::eGraphics, graphicsPipeline);
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// Viewport and scissor are dynamic so we need to set them
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vk::Viewport viewport = {
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.x = 0.0f,
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.y = 0.0f,
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.width = static_cast<float>(swapChainExtent.width),
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.height = static_cast<float>(swapChainExtent.height),
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.minDepth = 0.0f,
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.maxDepth = 1.0f,
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};
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commandBuffer.setViewport(0, viewport);
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commandBuffer.setScissor(0, vk::Rect2D(vk::Offset2D(0, 0), swapChainExtent));
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// Issue the draw command
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commandBuffer.draw(3, 1, 0, 0);
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commandBuffer.endRendering();
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// After rendering, transition the swapchain image to PRESENT_SRC
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transition_image_layout(
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imageIndex,
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vk::ImageLayout::eColorAttachmentOptimal,
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vk::ImageLayout::ePresentSrcKHR,
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vk::AccessFlagBits2::eColorAttachmentWrite, // srcAccessMask
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{}, // dstAccessMask
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vk::PipelineStageFlagBits2::eColorAttachmentOutput, // srcStage
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vk::PipelineStageFlagBits2::eBottomOfPipe // dstStage
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);
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// Finish recording the command buffer
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commandBuffer.end();
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}
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void transition_image_layout(
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uint32_t imageIndex,
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vk::ImageLayout oldLayout,
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vk::ImageLayout newLayout,
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vk::AccessFlags2 srcAccessMask,
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vk::AccessFlags2 dstAccessMask,
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vk::PipelineStageFlags2 srcStageMask,
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vk::PipelineStageFlags2 dstStageMask
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) {
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vk::ImageMemoryBarrier2 barrier = {
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.srcStageMask = srcStageMask,
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.srcAccessMask = srcAccessMask,
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.dstStageMask = dstStageMask,
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.dstAccessMask = dstAccessMask,
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.oldLayout = oldLayout,
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.newLayout = newLayout,
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.srcQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED,
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.dstQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED,
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.image = swapChainImages[imageIndex],
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.subresourceRange = {
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.aspectMask = vk::ImageAspectFlagBits::eColor,
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.baseMipLevel = 0,
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.levelCount = 1,
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.baseArrayLayer = 0,
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.layerCount = 1
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}
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};
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vk::DependencyInfo dependencyInfo = {
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.dependencyFlags = {},
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.imageMemoryBarrierCount = 1,
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.pImageMemoryBarriers = &barrier
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};
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commandBuffer.pipelineBarrier2(dependencyInfo);
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}
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[[nodiscard]] vk::raii::ShaderModule createShaderModule(const std::vector<char> &code) const {
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vk::ShaderModuleCreateInfo createInfo {
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.codeSize = code.size() * sizeof(char),
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.pCode = reinterpret_cast<const uint32_t *>(code.data()),
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};
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return vk::raii::ShaderModule{device, createInfo};
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}
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vk::SurfaceFormatKHR chooseSwapSurfaceFormat(const std::vector<vk::SurfaceFormatKHR>& availableFormats) {
|
|
for (const auto& availableFormat : availableFormats) {
|
|
if (availableFormat.format == vk::Format::eB8G8R8A8Srgb && availableFormat.colorSpace == vk::ColorSpaceKHR::eSrgbNonlinear) {
|
|
return availableFormat;
|
|
}
|
|
}
|
|
|
|
return availableFormats[0];
|
|
}
|
|
vk::PresentModeKHR chooseSwapPresentMode(const std::vector<vk::PresentModeKHR>& availablePresentModes) {
|
|
for (const auto& availablePresentMode : availablePresentModes) {
|
|
if (availablePresentMode == vk::PresentModeKHR::eMailbox) {
|
|
return availablePresentMode;
|
|
}
|
|
}
|
|
|
|
return vk::PresentModeKHR::eFifo;
|
|
}
|
|
vk::Extent2D chooseSwapExtent(const vk::SurfaceCapabilitiesKHR& capabilities) {
|
|
if (capabilities.currentExtent.width != std::numeric_limits<uint32_t>::max()) {
|
|
return capabilities.currentExtent;
|
|
}
|
|
|
|
int width, height;
|
|
glfwGetFramebufferSize(window, &width, &height);
|
|
|
|
return {
|
|
std::clamp<uint32_t>(width, capabilities.minImageExtent.width, capabilities.maxImageExtent.width),
|
|
std::clamp<uint32_t>(height, capabilities.minImageExtent.height, capabilities.maxImageExtent.height),
|
|
};
|
|
}
|
|
uint32_t findQueueFamilies(vk::raii::PhysicalDevice physicalDevice) {
|
|
// find the index of the first queue family that supports graphics
|
|
std::vector<vk::QueueFamilyProperties> queueFamilyProperties = physicalDevice.getQueueFamilyProperties();
|
|
|
|
// get the first index into queueFamilyProperties which both supports graphics and present
|
|
uint32_t queueIndex = ~0;
|
|
for (uint32_t qfpIndex = 0; qfpIndex < queueFamilyProperties.size(); ++qfpIndex) {
|
|
if ((queueFamilyProperties[qfpIndex].queueFlags & vk::QueueFlagBits::eGraphics) &&
|
|
physicalDevice.getSurfaceSupportKHR(qfpIndex, *surface)) {
|
|
queueIndex = qfpIndex;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (queueIndex == ~0) {
|
|
throw std::runtime_error("Could not find a queue for graphics and present -> terminating");
|
|
}
|
|
|
|
return queueIndex;
|
|
}
|
|
|
|
GLFWwindow *window;
|
|
vk::raii::Context context;
|
|
vk::raii::Instance instance = nullptr;
|
|
vk::raii::PhysicalDevice physicalDevice = nullptr;
|
|
uint32_t graphicsQueueIndex;
|
|
vk::raii::Device device = nullptr;
|
|
vk::raii::Queue graphicsQueue = nullptr;
|
|
vk::raii::SurfaceKHR surface = nullptr;
|
|
vk::raii::SwapchainKHR swapChain = nullptr;
|
|
vk::SurfaceFormatKHR swapChainSurfaceFormat;
|
|
vk::Extent2D swapChainExtent;
|
|
vk::Format swapChainImageFormat = vk::Format::eUndefined;
|
|
std::vector<vk::Image> swapChainImages;
|
|
std::vector<vk::raii::ImageView> swapChainImageViews;
|
|
vk::raii::PipelineLayout pipelineLayout = nullptr;
|
|
vk::raii::Pipeline graphicsPipeline = nullptr;
|
|
vk::raii::CommandPool commandPool = nullptr;
|
|
vk::raii::CommandBuffer commandBuffer = nullptr;
|
|
};
|
|
|
|
int main() {
|
|
HelloTriangleApplication app;
|
|
|
|
try {
|
|
app.run();
|
|
} catch (const std::exception &e) {
|
|
std::cout << e.what() << std::endl;
|
|
return EXIT_FAILURE;
|
|
}
|
|
|
|
return EXIT_SUCCESS;
|
|
}
|