physical devices queue families yeah
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180
src/main.cpp
180
src/main.cpp
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@ -11,6 +11,10 @@
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#include "fmt/base.h"
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#include "util/types.h"
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namespace vk {
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using DebugUtilsMessengerUnique = vk::UniqueHandle<vk::DebugUtilsMessengerEXT, vk::DispatchLoaderDynamic>;
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}
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constexpr int WIDTH = 800;
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constexpr int HEIGHT = 600;
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@ -36,9 +40,17 @@ class VulkanApp {
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vk::UniqueInstance mInstance;
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vk::UniqueHandle<vk::DebugUtilsMessengerEXT, vk::DispatchLoaderDynamic> mDebugMessenger;
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vk::DebugUtilsMessengerUnique mDebugMessenger;
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vk::DispatchLoaderDynamic mLoader;
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vk::PhysicalDevice mPhysicalDevice;
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struct QueueFamilyIndices {
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std::optional<u32> graphics_family;
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fn isComplete() -> bool { return graphics_family.has_value(); }
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};
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void initWindow() {
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glfwInit();
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@ -51,6 +63,55 @@ class VulkanApp {
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void initVulkan() {
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createInstance();
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setupDebugMessenger();
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pickPhysicalDevice();
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}
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void mainLoop() {
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while (!glfwWindowShouldClose(mWindow)) { glfwPollEvents(); }
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}
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void cleanup() {
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glfwDestroyWindow(mWindow);
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glfwTerminate();
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}
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fn createInstance() -> void {
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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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vk::ApplicationInfo appInfo { .pApplicationName = "Hello Triangle",
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.applicationVersion = 1,
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.pEngineName = "No Engine",
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.engineVersion = 1,
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.apiVersion = VK_API_VERSION_1_0 };
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// Retrieve extensions using custom function
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std::vector<const char*> extensions = getRequiredExtensions();
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// Enable the portability extension and set flags
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extensions.push_back("VK_KHR_portability_enumeration");
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vk::InstanceCreateInfo createInfo {
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.flags = vk::InstanceCreateFlagBits::eEnumeratePortabilityKHR,
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.pApplicationInfo = &appInfo,
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.enabledLayerCount = enableValidationLayers ? static_cast<uint32_t>(validationLayers.size()) : 0,
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.ppEnabledLayerNames = enableValidationLayers ? validationLayers.data() : nullptr,
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.enabledExtensionCount = static_cast<uint32_t>(extensions.size()),
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.ppEnabledExtensionNames = extensions.data()
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};
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#ifndef NDEBUG
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fmt::println("Available extensions:");
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for (const char* extension : extensions) fmt::println("\t{}", extension);
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#endif
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try {
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mInstance = vk::createInstanceUnique(createInfo);
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mLoader = vk::DispatchLoaderDynamic(mInstance.get(), vkGetInstanceProcAddr);
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} catch (const vk::SystemError& err) {
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throw std::runtime_error("Failed to create instance: " + std::string(err.what()));
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}
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}
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void setupDebugMessenger() {
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@ -70,53 +131,70 @@ class VulkanApp {
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mDebugMessenger = mInstance->createDebugUtilsMessengerEXTUnique(messengerCreateInfo, nullptr, mLoader);
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}
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void mainLoop() {
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while (!glfwWindowShouldClose(mWindow)) { glfwPollEvents(); }
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fn pickPhysicalDevice() -> void {
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std::vector<vk::PhysicalDevice> devices = mInstance->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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#ifndef NDEBUG
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fmt::println("Available devices:");
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#endif
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for (const auto& device : devices) {
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#ifndef NDEBUG
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vk::PhysicalDeviceProperties properties = device.getProperties();
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fmt::println("Device: {}", properties.deviceName.data());
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#endif
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if (isDeviceSuitable(device)) {
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mPhysicalDevice = device;
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break;
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}
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}
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void cleanup() {
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// NOTE: instance destruction is handled by UniqueInstance
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glfwDestroyWindow(mWindow);
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glfwTerminate();
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if (!mPhysicalDevice)
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throw std::runtime_error("Failed to find a suitable GPU!");
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}
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fn createInstance() -> void {
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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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static fn isDeviceSuitable(vk::PhysicalDevice device) -> bool {
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QueueFamilyIndices indices = findQueueFamilies(device);
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vk::ApplicationInfo appInfo { .pApplicationName = "Hello Triangle",
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.applicationVersion = 1,
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.pEngineName = "No Engine",
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.engineVersion = 1,
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.apiVersion = VK_API_VERSION_1_0 };
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// Retrieve extensions using custom function
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std::vector<const char*> extensions = getRequiredExtensions();
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vk::InstanceCreateInfo createInfo {
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.pApplicationInfo = &appInfo,
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.enabledLayerCount = enableValidationLayers ? static_cast<uint32_t>(validationLayers.size()) : 0,
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.ppEnabledLayerNames = enableValidationLayers ? validationLayers.data() : nullptr
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};
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// Enable the portability extension and set flags
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extensions.push_back(VK_KHR_PORTABILITY_ENUMERATION_EXTENSION_NAME);
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createInfo.setEnabledExtensionCount(static_cast<uint32_t>(extensions.size()))
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.setPpEnabledExtensionNames(extensions.data())
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.setFlags(vk::InstanceCreateFlagBits::eEnumeratePortabilityKHR);
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fmt::println("Available extensions:");
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for (const char* extension : extensions) fmt::println("\t{}", extension);
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try {
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mInstance = vk::createInstanceUnique(createInfo);
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mLoader = vk::DispatchLoaderDynamic(mInstance.get(), vkGetInstanceProcAddr);
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} catch (const vk::SystemError& err) {
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throw std::runtime_error("Failed to create instance: " + std::string(err.what()));
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return indices.isComplete();
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}
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static fn findQueueFamilies(vk::PhysicalDevice device) -> QueueFamilyIndices {
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QueueFamilyIndices indices;
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std::vector<vk::QueueFamilyProperties> queueFamilies = device.getQueueFamilyProperties();
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for (u32 i = 0; i < queueFamilies.size(); i++) {
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if (queueFamilies[i].queueFlags & vk::QueueFlagBits::eGraphics)
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indices.graphics_family = i;
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if (indices.isComplete())
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break;
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}
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return indices;
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}
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static fn getRequiredExtensions() -> std::vector<const char*> {
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u32 glfwExtensionCount = 0;
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const char** glfwExtensions = nullptr;
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glfwExtensions = glfwGetRequiredInstanceExtensions(&glfwExtensionCount);
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std::vector<const char*> extensions;
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if (glfwExtensions) {
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std::span<const char*> extSpan(glfwExtensions, glfwExtensionCount);
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extensions.assign(extSpan.begin(), extSpan.end());
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}
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if (enableValidationLayers)
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extensions.push_back("VK_EXT_debug_utils");
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return extensions;
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}
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static fn checkValidationLayerSupport() -> bool {
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@ -138,24 +216,6 @@ class VulkanApp {
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return true;
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}
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static fn getRequiredExtensions() -> std::vector<const char*> {
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u32 glfwExtensionCount = 0;
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const char** glfwExtensions = nullptr;
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glfwExtensions = glfwGetRequiredInstanceExtensions(&glfwExtensionCount);
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std::vector<const char*> extensions;
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if (glfwExtensions) {
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std::span<const char*> extSpan(glfwExtensions, glfwExtensionCount);
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extensions.assign(extSpan.begin(), extSpan.end());
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}
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if (enableValidationLayers)
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extensions.push_back("VK_EXT_debug_utils");
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return extensions;
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}
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static VKAPI_ATTR fn VKAPI_CALL debugCallback(
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VkDebugUtilsMessageSeverityFlagBitsEXT /*messageSeverity*/,
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VkDebugUtilsMessageTypeFlagsEXT /*messageType*/,
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