Initial commit for vulkan tutorial
Following along the first 9 chapters of the Vulkan HelloTriangle tutorial.
This commit is contained in:
226
04_logical_device.cpp
Normal file
226
04_logical_device.cpp
Normal file
@@ -0,0 +1,226 @@
|
||||
#include "vulkan/vulkan.hpp"
|
||||
#if defined(__INTELLISENSE__) || !defined(USE_CPP20_MODULES)
|
||||
#include <vulkan/vulkan_raii.hpp>
|
||||
#include <vulkan/vulkan_core.h>
|
||||
#else
|
||||
import vulkan_hpp;
|
||||
#endif
|
||||
|
||||
#define GLFW_INCLUDE_VULKAN
|
||||
#include <GLFW/glfw3.h>
|
||||
#include <iostream>
|
||||
#include <vector>
|
||||
#include <stdexcept>
|
||||
#include <cstdlib>
|
||||
#include <cstdint>
|
||||
|
||||
constexpr uint32_t WIDTH = 800;
|
||||
constexpr uint32_t HEIGHT = 600;
|
||||
|
||||
const std::vector<char const *> validationLayers = {
|
||||
"VK_LAYER_KHRONOS_validation"
|
||||
};
|
||||
|
||||
#ifdef NDEBUG
|
||||
constexpr bool enableValidationLayers = false;
|
||||
#else
|
||||
constexpr bool enableValidationLayers = true;
|
||||
#endif
|
||||
|
||||
class HelloTriangleApplication {
|
||||
public:
|
||||
void run() {
|
||||
initWindow();
|
||||
initVulkan();
|
||||
mainLoop();
|
||||
cleanup();
|
||||
}
|
||||
private:
|
||||
void initWindow() {
|
||||
glfwInit();
|
||||
// Don't create an OpenGL context
|
||||
glfwWindowHint(GLFW_CLIENT_API, GLFW_NO_API);
|
||||
glfwWindowHint(GLFW_RESIZABLE, GLFW_FALSE);
|
||||
window = glfwCreateWindow(WIDTH, HEIGHT, "Vulkan", nullptr, nullptr);
|
||||
}
|
||||
void initVulkan() {
|
||||
createInstance();
|
||||
pickPhysicalDevice();
|
||||
createLogicalDevice();
|
||||
}
|
||||
void mainLoop() {
|
||||
while (!glfwWindowShouldClose(window)) {
|
||||
glfwPollEvents();
|
||||
}
|
||||
}
|
||||
void cleanup() {
|
||||
glfwDestroyWindow(window);
|
||||
glfwTerminate();
|
||||
}
|
||||
void createInstance() {
|
||||
constexpr vk::ApplicationInfo appInfo {
|
||||
.pApplicationName = "Hello Triangle",
|
||||
.applicationVersion = VK_MAKE_VERSION(1, 0, 0),
|
||||
.pEngineName = "No Engine",
|
||||
.engineVersion = VK_MAKE_VERSION(1, 0, 0),
|
||||
.apiVersion = vk::ApiVersion14,
|
||||
};
|
||||
|
||||
// Get the required layers
|
||||
std::vector<char const*> requiredLayers;
|
||||
if (enableValidationLayers) {
|
||||
requiredLayers.assign(validationLayers.begin(), validationLayers.end());
|
||||
}
|
||||
|
||||
// Check if the required layers are supported by the Vulkan implementation.
|
||||
auto layerProperties = context.enumerateInstanceLayerProperties();
|
||||
if (std::ranges::any_of(requiredLayers, [&layerProperties](auto const& requiredLayer) {
|
||||
return std::ranges::none_of(layerProperties,
|
||||
[requiredLayer](auto const& layerProperty)
|
||||
{ return strcmp(layerProperty.layerName, requiredLayer) == 0; });
|
||||
}))
|
||||
{
|
||||
throw std::runtime_error("One or more required layers are not supported!");
|
||||
}
|
||||
|
||||
// Get the required instance extensions from GLFW.
|
||||
uint32_t glfwExtensionCount = 0;
|
||||
auto glfwExtensions = glfwGetRequiredInstanceExtensions(&glfwExtensionCount);
|
||||
|
||||
// Check if the required GLFW extensions are supported by the Vulkan implementation.
|
||||
auto extensionProperties = context.enumerateInstanceExtensionProperties();
|
||||
for (uint32_t i = 0; i < glfwExtensionCount; ++i)
|
||||
{
|
||||
if (std::ranges::none_of(extensionProperties,
|
||||
[glfwExtension = glfwExtensions[i]](auto const& extensionProperty)
|
||||
{ return strcmp(extensionProperty.extensionName, glfwExtension) == 0; }))
|
||||
{
|
||||
throw std::runtime_error("Required GLFW extension not supported: " + std::string(glfwExtensions[i]));
|
||||
}
|
||||
}
|
||||
vk::InstanceCreateInfo createInfo {
|
||||
.pApplicationInfo = &appInfo,
|
||||
.enabledLayerCount = static_cast<uint32_t>(requiredLayers.size()),
|
||||
.ppEnabledLayerNames = requiredLayers.data(),
|
||||
.enabledExtensionCount = glfwExtensionCount,
|
||||
.ppEnabledExtensionNames = glfwExtensions,
|
||||
};
|
||||
|
||||
instance = vk::raii::Instance(context, createInfo);
|
||||
}
|
||||
void pickPhysicalDevice() {
|
||||
std::vector<const char*> deviceExtensions = {
|
||||
vk::KHRSwapchainExtensionName,
|
||||
vk::KHRSpirv14ExtensionName,
|
||||
vk::KHRSynchronization2ExtensionName,
|
||||
vk::KHRCreateRenderpass2ExtensionName
|
||||
};
|
||||
|
||||
auto devices = instance.enumeratePhysicalDevices();
|
||||
if (devices.empty()) {
|
||||
throw std::runtime_error("failed to find GPUs with Vulkan support!");
|
||||
}
|
||||
|
||||
for (const auto &device : devices) {
|
||||
auto deviceProperties = device.getProperties();
|
||||
auto deviceFeatures = device.getFeatures();
|
||||
auto queueFamilies = device.getQueueFamilyProperties();
|
||||
auto extensions = device.enumerateDeviceExtensionProperties();
|
||||
bool isSuitable = deviceProperties.apiVersion >= VK_API_VERSION_1_3;
|
||||
bool extensionFound = true;
|
||||
|
||||
const vk::QueueFamilyProperties *qf = nullptr;
|
||||
for (const auto &qfp : queueFamilies) {
|
||||
if ((qfp.queueFlags & vk::QueueFlagBits::eGraphics) != static_cast<vk::QueueFlags>(0)) {
|
||||
qf = &qfp;
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
isSuitable = isSuitable && (qf != nullptr);
|
||||
|
||||
for (const auto &extension : deviceExtensions) {
|
||||
auto extensionIter = std::ranges::find_if(extensions, [extension](auto const & ext) {return strcmp(ext.extensionName, extension) == 0;});
|
||||
extensionFound = extensionFound && extensionIter != extensions.end();
|
||||
}
|
||||
|
||||
isSuitable = isSuitable && extensionFound;
|
||||
|
||||
if (isSuitable) {
|
||||
physicalDevice = device;
|
||||
return;
|
||||
}
|
||||
|
||||
throw std::runtime_error("failed to find a suitable GPU");
|
||||
}
|
||||
}
|
||||
void createLogicalDevice() {
|
||||
std::vector<vk::QueueFamilyProperties> queueFamilyProperties = physicalDevice.getQueueFamilyProperties();
|
||||
uint32_t graphicsIndex = findQueueFamilies(physicalDevice);
|
||||
float queuePriority = 0.5f;
|
||||
vk::DeviceQueueCreateInfo deviceQueueCreateInfo {
|
||||
.queueFamilyIndex = graphicsIndex,
|
||||
.queueCount = 1,
|
||||
.pQueuePriorities = &queuePriority,
|
||||
};
|
||||
|
||||
// Create a chain of feature structures
|
||||
vk::StructureChain<vk::PhysicalDeviceFeatures2,
|
||||
vk::PhysicalDeviceVulkan13Features,
|
||||
vk::PhysicalDeviceExtendedDynamicStateFeaturesEXT> featureChain = {
|
||||
{}, // vk::PhysicalDeviceFeatures2 (empty for now)
|
||||
{.dynamicRendering = true }, // Enable dynamic rendering from Vulkan 1.3
|
||||
{.extendedDynamicState = true } // Enable extended dynamic state from the extension
|
||||
};
|
||||
|
||||
std::vector<const char*> deviceExtensions = {
|
||||
vk::KHRSwapchainExtensionName,
|
||||
vk::KHRSpirv14ExtensionName,
|
||||
vk::KHRSynchronization2ExtensionName,
|
||||
vk::KHRCreateRenderpass2ExtensionName
|
||||
};
|
||||
|
||||
vk::DeviceCreateInfo deviceCreateInfo {
|
||||
.pNext = &featureChain.get<vk::PhysicalDeviceFeatures2>(),
|
||||
.queueCreateInfoCount = 1,
|
||||
.pQueueCreateInfos = &deviceQueueCreateInfo,
|
||||
.enabledExtensionCount = static_cast<uint32_t>(deviceExtensions.size()),
|
||||
.ppEnabledExtensionNames = deviceExtensions.data(),
|
||||
};
|
||||
|
||||
device = vk::raii::Device(physicalDevice, deviceCreateInfo);
|
||||
graphicsQueue = vk::raii::Queue(device, graphicsIndex, 0);
|
||||
}
|
||||
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 supports graphics
|
||||
auto graphicsQueueFamilyProperty =
|
||||
std::find_if( queueFamilyProperties.begin(),
|
||||
queueFamilyProperties.end(),
|
||||
[]( vk::QueueFamilyProperties const & qfp ) { return qfp.queueFlags & vk::QueueFlagBits::eGraphics; } );
|
||||
|
||||
return static_cast<uint32_t>( std::distance( queueFamilyProperties.begin(), graphicsQueueFamilyProperty ) );
|
||||
}
|
||||
|
||||
GLFWwindow *window;
|
||||
vk::raii::Context context;
|
||||
vk::raii::Instance instance = nullptr;
|
||||
vk::raii::PhysicalDevice physicalDevice = nullptr;
|
||||
vk::raii::Device device = nullptr;
|
||||
vk::raii::Queue graphicsQueue = 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;
|
||||
}
|
||||
Reference in New Issue
Block a user