126 lines
3.8 KiB
C++
126 lines
3.8 KiB
C++
#if defined(__INTELLISENSE__) || !defined(USE_CPP20_MODULES)
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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 <iostream>
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#include <vector>
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#include <stdexcept>
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#include <cstdlib>
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#include <cstdint>
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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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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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}
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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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GLFWwindow *window;
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vk::raii::Context context;
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vk::raii::Instance instance = nullptr;
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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::cout << 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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