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VulkanSimulation
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refactoring everything into multiple classes

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feature/softbody-runtime-control
Benjamin Kraft 5 months ago
parent a1022e0e30
commit a6eb297a78
18 changed files with 1078 additions and 920 deletions
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  1. 2
      CMakeLists.txt
  2. 920
      src/main.cpp
  3. 2
      src/pipeline.cpp
  4. 0
      src/pipeline.hpp
  5. 107
      src/vulkan/application.cpp
  6. 103
      src/vulkan/application.hpp
  7. 55
      src/vulkan/buffer.cpp
  8. 19
      src/vulkan/buffer.hpp
  9. 32
      src/vulkan/command_pool.cpp
  10. 16
      src/vulkan/command_pool.hpp
  11. 237
      src/vulkan/instance.cpp
  12. 46
      src/vulkan/instance.hpp
  13. 149
      src/vulkan/pipeline.cpp
  14. 15
      src/vulkan/pipeline.hpp
  15. 215
      src/vulkan/swapchain.cpp
  16. 45
      src/vulkan/swapchain.hpp
  17. 1
      src/vulkan/vertex.cpp
  18. 34
      src/vulkan/vertex.hpp

2
CMakeLists.txt
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@ -3,7 +3,7 @@ project(VulkanSimulation)
set(CMAKE_CXX_STANDARD 20) set(CMAKE_CXX_STANDARD 20)
file(GLOB SRC_FILES src/*.cpp) file(GLOB_RECURSE SRC_FILES src/**.cpp)
add_executable(VulkanSimulation ${SRC_FILES}) add_executable(VulkanSimulation ${SRC_FILES})
find_package(Vulkan REQUIRED) find_package(Vulkan REQUIRED)

920
src/main.cpp
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@ -1,921 +1,7 @@
#define GLFW_INCLUDE_VULKAN #include "vulkan/application.hpp"
#include <GLFW/glfw3.h>
#include <glm/glm.hpp> #include <thread>
#include <iostream>
#include <vector>
#include <cstring>
#include <optional>
#include <set>
#include <fstream>
#include <numeric>
#include <chrono>
#include <array>
const std::vector<const char*> deviceExtensions = {
VK_KHR_SWAPCHAIN_EXTENSION_NAME
};
#ifndef NDEBUG
#define ENABLE_VALIDATION_LAYERS
#endif
#ifdef ENABLE_VALIDATION_LAYERS
const std::vector<const char*> validationLayers = {
"VK_LAYER_KHRONOS_validation"
};
bool checkValidationLayerSupport(){
uint32_t layerCount;
vkEnumerateInstanceLayerProperties(&layerCount, nullptr);
std::vector<VkLayerProperties> availableLayers(layerCount);
vkEnumerateInstanceLayerProperties(&layerCount, availableLayers.data());
for (const char* layerName : validationLayers){
bool layerFound = false;
for (const auto& layerProperties : availableLayers){
if (strcmp(layerName, layerProperties.layerName) == 0){
layerFound = true;
break;
}
}
if (!layerFound){
return false;
}
}
return true;
}
#endif
constexpr int MAX_FRAMES_IN_FLIGHT = 2;
class Timer {
public:
explicit Timer(){
start = std::chrono::system_clock::now();
}
~Timer(){
size_t nanoseconds = (std::chrono::system_clock::now() - start).count();
printf("Timer: %zu mus\n", nanoseconds / 1000);
}
private:
std::chrono::time_point<std::chrono::system_clock> start;
};
std::vector<char> readFile(const std::string& fileName){
std::ifstream file(fileName, std::ios::ate | std::ios::binary);
if (!file.is_open()){
throw std::runtime_error("failed to open file!");
}
size_t fileSize = file.tellg();
std::vector<char> buffer(fileSize);
file.seekg(0);
file.read(buffer.data(), static_cast<std::streamsize>(fileSize));
file.close();
return buffer;
}
struct Vertex {
glm::vec2 pos;
glm::vec3 color;
static VkVertexInputBindingDescription getBindingDescription(){
VkVertexInputBindingDescription bindingDescription {};
bindingDescription.binding = 0;
bindingDescription.stride = sizeof(Vertex);
bindingDescription.inputRate = VK_VERTEX_INPUT_RATE_VERTEX;
return bindingDescription;
}
static std::array<VkVertexInputAttributeDescription, 2> getAttributeDescriptions(){
std::array<VkVertexInputAttributeDescription, 2> attributeDescriptions {};
attributeDescriptions[0].binding = 0;
attributeDescriptions[0].location = 0;
attributeDescriptions[0].format = VK_FORMAT_R32G32_SFLOAT;
attributeDescriptions[0].offset = offsetof(Vertex, pos);
attributeDescriptions[1].binding = 0;
attributeDescriptions[1].location = 1;
attributeDescriptions[1].format = VK_FORMAT_R32G32B32_SFLOAT;
attributeDescriptions[1].offset = offsetof(Vertex, color);
return attributeDescriptions;
}
};
const std::vector<Vertex> vertices = {
{{0.0, -0.5}, {1, 0, 0}},
{{0.5, 0.5}, {0, 1, 0}},
{{-0.5, 0.5}, {0, 0, 1}}
};
class MyApp {
public:
void run(){
initWindow();
initVulkan();
mainLoop();
cleanup();
}
private:
GLFWwindow *window = nullptr;
void initWindow(){
glfwInit();
glfwWindowHint(GLFW_CLIENT_API, GLFW_NO_API);
glfwWindowHint(GLFW_RESIZABLE, GLFW_TRUE);
window = glfwCreateWindow(800, 600, "Vulkan Simulation", nullptr, nullptr);
}
void initVulkan(){
createInstance();
createSurface();
pickPhysicalDevice();
createLogicalDevice();
createSwapchain();
createImageViews();
createRenderPass();
createGraphicsPipeline();
createFramebuffers();
createVertexBuffer();
createCommandPool();
createCommandBuffers();
createSyncObjects();
}
VkInstance instance = VK_NULL_HANDLE;
void createInstance(){
#ifdef ENABLE_VALIDATION_LAYERS
if (!checkValidationLayerSupport()){
throw std::runtime_error("validation layers requested, but not available!");
}
#endif
VkApplicationInfo applicationInfo {};
applicationInfo.sType = VK_STRUCTURE_TYPE_APPLICATION_INFO;
applicationInfo.pApplicationName = "Coole Simulation";
applicationInfo.applicationVersion = VK_MAKE_VERSION(1, 0, 0);
applicationInfo.pEngineName = "No Engine";
applicationInfo.engineVersion = VK_MAKE_VERSION(1, 0, 0);
applicationInfo.apiVersion = VK_API_VERSION_1_0;
uint32_t glfwExtensionCount = 0;
const char** glfwExtensions = glfwGetRequiredInstanceExtensions(&glfwExtensionCount);
VkInstanceCreateInfo instanceCreateInfo {};
instanceCreateInfo.sType = VK_STRUCTURE_TYPE_INSTANCE_CREATE_INFO;
instanceCreateInfo.pApplicationInfo = &applicationInfo;
instanceCreateInfo.enabledExtensionCount = glfwExtensionCount;
instanceCreateInfo.ppEnabledExtensionNames = glfwExtensions;
#ifdef ENABLE_VALIDATION_LAYERS
instanceCreateInfo.enabledLayerCount = validationLayers.size();
instanceCreateInfo.ppEnabledLayerNames = validationLayers.data();
#else
instanceCreateInfo.enabledLayerCount = 0;
#endif
if (vkCreateInstance(&instanceCreateInfo, nullptr, &instance) != VK_SUCCESS){
throw std::runtime_error("failed to create instance!");
}
}
VkSurfaceKHR surface = VK_NULL_HANDLE;
void createSurface(){
if (glfwCreateWindowSurface(instance, window, nullptr, &surface) != VK_SUCCESS){
throw std::runtime_error("failed to create window surface!");
}
}
VkPhysicalDevice physicalDevice = VK_NULL_HANDLE;
void pickPhysicalDevice(){
uint32_t deviceCount = 0;
vkEnumeratePhysicalDevices(instance, &deviceCount, nullptr);
if (deviceCount == 0){
throw std::runtime_error("failed to find GPUs with Vulkan support!");
}
std::vector<VkPhysicalDevice> devices(deviceCount);
vkEnumeratePhysicalDevices(instance, &deviceCount, devices.data());
for (const VkPhysicalDevice &device : devices){
if (isDeviceSuitable(device)){
physicalDevice = device;
break;
}
}
if (physicalDevice == VK_NULL_HANDLE){
throw std::runtime_error("failed to find a suitable GPU!");
}
VkPhysicalDeviceProperties properties;
vkGetPhysicalDeviceProperties(physicalDevice, &properties);
printf("Picked physical device: %s\n", properties.deviceName);
}
struct QueueFamilyIndices {
std::optional<uint32_t> graphicsFamily;
std::optional<uint32_t> computeFamily;
std::optional<uint32_t> presentFamily;
bool isComplete() const {
return graphicsFamily.has_value() && computeFamily.has_value() && presentFamily.has_value();
}
std::set<uint32_t> uniqueQueueFamilies(){
return {graphicsFamily.value(), presentFamily.value(), computeFamily.value()};
}
};
QueueFamilyIndices findQueueFamilies(VkPhysicalDevice device){
uint32_t queueFamilyCount = 0;
vkGetPhysicalDeviceQueueFamilyProperties(device, &queueFamilyCount, nullptr);
std::vector<VkQueueFamilyProperties> queueFamilies(queueFamilyCount);
vkGetPhysicalDeviceQueueFamilyProperties(device, &queueFamilyCount, queueFamilies.data());
QueueFamilyIndices indices {};
uint32_t i = 0;
for (const VkQueueFamilyProperties& queueFamilyProperties : queueFamilies){
if (queueFamilyProperties.queueFlags & VK_QUEUE_GRAPHICS_BIT){
indices.graphicsFamily = i;
}
if (queueFamilyProperties.queueFlags & VK_QUEUE_COMPUTE_BIT){
indices.computeFamily = i;
}
VkBool32 presentSupport = false;
vkGetPhysicalDeviceSurfaceSupportKHR(device, i, surface, &presentSupport);
if (presentSupport){
indices.presentFamily = i;
}
if (indices.isComplete()){
break;
}
i++;
}
return indices;
}
bool isDeviceSuitable(VkPhysicalDevice device){
VkPhysicalDeviceProperties deviceProperties;
vkGetPhysicalDeviceProperties(device, &deviceProperties);
VkPhysicalDeviceFeatures deviceFeatures;
vkGetPhysicalDeviceFeatures(device, &deviceFeatures);
QueueFamilyIndices indices = findQueueFamilies(device);
bool extensionsSupported = checkDeviceExtensionSupport(device);
bool swapChainAdequate = false;
if (extensionsSupported){
SwapchainSupportDetails details = querySwapchainSupport(device);
swapChainAdequate = !details.formats.empty() && !details.presentModes.empty();
}
return indices.isComplete() && extensionsSupported && swapChainAdequate;
}
static bool checkDeviceExtensionSupport(VkPhysicalDevice device){
std::set<std::string> required(deviceExtensions.begin(), deviceExtensions.end());
uint32_t extensionCount;
vkEnumerateDeviceExtensionProperties(device, nullptr, &extensionCount, nullptr);
std::vector<VkExtensionProperties> availableExtensions(extensionCount);
vkEnumerateDeviceExtensionProperties(device, nullptr, &extensionCount, availableExtensions.data());
for (const VkExtensionProperties& extension : availableExtensions){
required.erase(extension.extensionName);
}
return required.empty();
}
struct SwapchainSupportDetails {
VkSurfaceCapabilitiesKHR capabilities {};
std::vector<VkSurfaceFormatKHR> formats;
std::vector<VkPresentModeKHR> presentModes;
};
SwapchainSupportDetails querySwapchainSupport(VkPhysicalDevice device){
SwapchainSupportDetails details;
vkGetPhysicalDeviceSurfaceCapabilitiesKHR(device, surface, &details.capabilities);
uint32_t formatCount;
vkGetPhysicalDeviceSurfaceFormatsKHR(device, surface, &formatCount, nullptr);
if (formatCount != 0){
details.formats.resize(formatCount);
vkGetPhysicalDeviceSurfaceFormatsKHR(device, surface, &formatCount, details.formats.data());
}
uint32_t presentModeCount;
vkGetPhysicalDeviceSurfacePresentModesKHR(device, surface, &presentModeCount, nullptr);
if (presentModeCount != 0){
details.presentModes.resize(presentModeCount);
vkGetPhysicalDeviceSurfacePresentModesKHR(device, surface, &presentModeCount, details.presentModes.data());
}
return details;
}
VkDevice device = VK_NULL_HANDLE;
VkQueue graphicsQueue = VK_NULL_HANDLE;
VkQueue presentQueue = VK_NULL_HANDLE;
void createLogicalDevice(){
QueueFamilyIndices indices = findQueueFamilies(physicalDevice);
std::vector<VkDeviceQueueCreateInfo> queueCreateInfos;
float queuePriority = 1.0f;
for (uint32_t queueFamily : indices.uniqueQueueFamilies()){
VkDeviceQueueCreateInfo queueCreateInfo {};
queueCreateInfo.sType = VK_STRUCTURE_TYPE_DEVICE_QUEUE_CREATE_INFO;
queueCreateInfo.queueFamilyIndex = queueFamily;
queueCreateInfo.queueCount = 1;
queueCreateInfo.pQueuePriorities = &queuePriority;
queueCreateInfos.push_back(queueCreateInfo);
}
VkPhysicalDeviceFeatures deviceFeatures {};
VkDeviceCreateInfo createInfo {};
createInfo.sType = VK_STRUCTURE_TYPE_DEVICE_CREATE_INFO;
createInfo.pQueueCreateInfos = queueCreateInfos.data();
createInfo.queueCreateInfoCount = queueCreateInfos.size();
createInfo.pEnabledFeatures = &deviceFeatures;
createInfo.enabledExtensionCount = deviceExtensions.size();
createInfo.ppEnabledExtensionNames = deviceExtensions.data();
#ifdef ENABLE_VALIDATION_LAYERS
createInfo.enabledLayerCount = validationLayers.size();
createInfo.ppEnabledLayerNames = validationLayers.data();
#else
createInfo.enabledLayerCount = 0;
#endif
if (vkCreateDevice(physicalDevice, &createInfo, nullptr, &device) != VK_SUCCESS){
throw std::runtime_error("failed to create logical device!");
}
vkGetDeviceQueue(device, indices.graphicsFamily.value(), 0, &graphicsQueue);
vkGetDeviceQueue(device, indices.presentFamily.value(), 0, &presentQueue);
}
static VkSurfaceFormatKHR chooseSwapSurfaceFormat(const std::vector<VkSurfaceFormatKHR>& availableFormats){
for (const auto& availableFormat : availableFormats){
if (availableFormat.format == VK_FORMAT_B8G8R8A8_SRGB && availableFormat.colorSpace == VK_COLOR_SPACE_SRGB_NONLINEAR_KHR){
return availableFormat;
}
}
return availableFormats[0];
}
static VkPresentModeKHR chooseSwapPresentMode(const std::vector<VkPresentModeKHR>& availablePresentModes){
return VK_PRESENT_MODE_FIFO_KHR;
}
VkExtent2D chooseSwapExtent(const VkSurfaceCapabilitiesKHR& capabilities){
if (capabilities.currentExtent.width != std::numeric_limits<uint32_t>::max()){
return capabilities.currentExtent;
} else {
int width, height;
glfwGetFramebufferSize(window, &width, &height);
VkExtent2D actualExtent = {
static_cast<uint32_t>(width),
static_cast<uint32_t>(height)
};
actualExtent.width = std::clamp(actualExtent.width, capabilities.minImageExtent.width, capabilities.maxImageExtent.width);
actualExtent.height = std::clamp(actualExtent.height, capabilities.minImageExtent.height, capabilities.maxImageExtent.height);
return actualExtent;
}
}
void createSwapchain(){
SwapchainSupportDetails swapchainSupport = querySwapchainSupport(physicalDevice);
VkSurfaceFormatKHR surfaceFormat = chooseSwapSurfaceFormat(swapchainSupport.formats);
VkPresentModeKHR presentMode = chooseSwapPresentMode(swapchainSupport.presentModes);
VkExtent2D extent = chooseSwapExtent(swapchainSupport.capabilities);
uint32_t imageCount = swapchainSupport.capabilities.minImageCount + 1;
if (swapchainSupport.capabilities.maxImageCount > 0 && imageCount > swapchainSupport.capabilities.maxImageCount){
imageCount = swapchainSupport.capabilities.maxImageCount;
}
VkSwapchainCreateInfoKHR createInfo {};
createInfo.sType = VK_STRUCTURE_TYPE_SWAPCHAIN_CREATE_INFO_KHR;
createInfo.surface = surface;
createInfo.minImageCount = imageCount;
createInfo.imageFormat = surfaceFormat.format;
createInfo.imageColorSpace = surfaceFormat.colorSpace;
createInfo.imageExtent = extent;
createInfo.imageArrayLayers = 1;
createInfo.imageUsage = VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT;
QueueFamilyIndices indices = findQueueFamilies(physicalDevice);
uint32_t queueFamilyIndices[] = {indices.graphicsFamily.value(), indices.presentFamily.value()};
if (indices.graphicsFamily != indices.presentFamily){
createInfo.imageSharingMode = VK_SHARING_MODE_CONCURRENT;
createInfo.queueFamilyIndexCount = 2;
createInfo.pQueueFamilyIndices = queueFamilyIndices;
} else {
createInfo.imageSharingMode = VK_SHARING_MODE_EXCLUSIVE;
}
createInfo.preTransform = swapchainSupport.capabilities.currentTransform;
createInfo.compositeAlpha = VK_COMPOSITE_ALPHA_OPAQUE_BIT_KHR;
createInfo.presentMode = presentMode;
createInfo.clipped = VK_TRUE;
createInfo.oldSwapchain = VK_NULL_HANDLE;
if (vkCreateSwapchainKHR(device, &createInfo, nullptr, &swapchain) != VK_SUCCESS){
throw std::runtime_error("failed to create swapchain!");
}
vkGetSwapchainImagesKHR(device, swapchain, &imageCount, nullptr);
swapchainImages.resize(imageCount);
vkGetSwapchainImagesKHR(device, swapchain, &imageCount, swapchainImages.data());
swapchainImageFormat = surfaceFormat.format;
swapchainExtent = extent;
}
void cleanupSwapchain(){
for (auto framebuffer : swapchainFramebuffers){
vkDestroyFramebuffer(device, framebuffer, nullptr);
}
for (auto imageView : swapchainImageViews){
vkDestroyImageView(device, imageView, nullptr);
}
vkDestroySwapchainKHR(device, swapchain, nullptr);
}
void recreateSwapchain(){
vkDeviceWaitIdle(device);
cleanupSwapchain();
createSwapchain();
createImageViews();
createFramebuffers();
}
VkSwapchainKHR swapchain = VK_NULL_HANDLE;
std::vector<VkImage> swapchainImages;
VkFormat swapchainImageFormat {};
VkExtent2D swapchainExtent {};
std::vector<VkImageView> swapchainImageViews;
void createImageViews(){
swapchainImageViews.resize(swapchainImages.size());
for (size_t i = 0; i < swapchainImages.size(); i++){
VkImageViewCreateInfo createInfo {};
createInfo.sType = VK_STRUCTURE_TYPE_IMAGE_VIEW_CREATE_INFO;
createInfo.format = swapchainImageFormat;
createInfo.viewType = VK_IMAGE_VIEW_TYPE_2D;
createInfo.image = swapchainImages[i];
createInfo.components = {
VK_COMPONENT_SWIZZLE_IDENTITY,
VK_COMPONENT_SWIZZLE_IDENTITY,
VK_COMPONENT_SWIZZLE_IDENTITY,
VK_COMPONENT_SWIZZLE_IDENTITY,
};
createInfo.subresourceRange = {VK_IMAGE_ASPECT_COLOR_BIT, 0, 1, 0, 1};
if (vkCreateImageView(device, &createInfo, nullptr, &swapchainImageViews[i]) != VK_SUCCESS){
throw std::runtime_error("failed to create image views!");
}
}
}
VkShaderModule createShaderModule(const std::vector<char> &code){
VkShaderModuleCreateInfo createInfo {};
createInfo.sType = VK_STRUCTURE_TYPE_SHADER_MODULE_CREATE_INFO;
createInfo.codeSize = code.size();
createInfo.pCode = reinterpret_cast<const uint32_t *>(code.data());
VkShaderModule shaderModule;
if (vkCreateShaderModule(device, &createInfo, nullptr, &shaderModule) != VK_SUCCESS){
throw std::runtime_error("failed to create shader module!");
}
return shaderModule;
}
void createRenderPass(){
VkAttachmentDescription colorAttachment {};
colorAttachment.format = swapchainImageFormat;
colorAttachment.samples = VK_SAMPLE_COUNT_1_BIT;
colorAttachment.loadOp = VK_ATTACHMENT_LOAD_OP_CLEAR;
colorAttachment.storeOp = VK_ATTACHMENT_STORE_OP_STORE;
colorAttachment.stencilLoadOp = VK_ATTACHMENT_LOAD_OP_DONT_CARE;
colorAttachment.stencilStoreOp = VK_ATTACHMENT_STORE_OP_DONT_CARE;
colorAttachment.initialLayout = VK_IMAGE_LAYOUT_UNDEFINED;
colorAttachment.finalLayout = VK_IMAGE_LAYOUT_PRESENT_SRC_KHR;
VkAttachmentReference colorAttachmentRef {};
colorAttachmentRef.attachment = 0;
colorAttachmentRef.layout = VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL;
VkSubpassDescription subpass {};
subpass.pipelineBindPoint = VK_PIPELINE_BIND_POINT_GRAPHICS;
subpass.colorAttachmentCount = 1;
subpass.pColorAttachments = &colorAttachmentRef;
VkSubpassDependency dependency {};
dependency.srcSubpass = VK_SUBPASS_EXTERNAL;
dependency.dstSubpass = 0;
dependency.srcStageMask = VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT;
dependency.srcAccessMask = 0;
dependency.dstStageMask = VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT;
dependency.dstAccessMask = VK_ACCESS_COLOR_ATTACHMENT_WRITE_BIT;
VkRenderPassCreateInfo renderPassInfo {};
renderPassInfo.sType = VK_STRUCTURE_TYPE_RENDER_PASS_CREATE_INFO;
renderPassInfo.attachmentCount = 1;
renderPassInfo.pAttachments = &colorAttachment;
renderPassInfo.subpassCount = 1;
renderPassInfo.pSubpasses = &subpass;
renderPassInfo.dependencyCount = 1;
renderPassInfo.pDependencies = &dependency;
vkCreateRenderPass(device, &renderPassInfo, nullptr, &renderPass);
}
VkRenderPass renderPass = VK_NULL_HANDLE;
VkPipelineLayout pipelineLayout = VK_NULL_HANDLE;
void createGraphicsPipeline(){
auto vertShaderCode = readFile("shaders/vert.spv");
auto fragShaderCode = readFile("shaders/frag.spv");
VkShaderModule vertShaderModule = createShaderModule(vertShaderCode);
VkShaderModule fragShaderModule = createShaderModule(fragShaderCode);
VkPipelineShaderStageCreateInfo vertShaderStageInfo {};
vertShaderStageInfo.sType = VK_STRUCTURE_TYPE_PIPELINE_SHADER_STAGE_CREATE_INFO;
vertShaderStageInfo.stage = VK_SHADER_STAGE_VERTEX_BIT;
vertShaderStageInfo.module = vertShaderModule;
vertShaderStageInfo.pName = "main";
VkPipelineShaderStageCreateInfo fragShaderStageInfo {};
fragShaderStageInfo.sType = VK_STRUCTURE_TYPE_PIPELINE_SHADER_STAGE_CREATE_INFO;
fragShaderStageInfo.stage = VK_SHADER_STAGE_FRAGMENT_BIT;
fragShaderStageInfo.module = fragShaderModule;
fragShaderStageInfo.pName = "main";
VkPipelineShaderStageCreateInfo shaderStages[] = {vertShaderStageInfo, fragShaderStageInfo};
auto bindingDescription = Vertex::getBindingDescription();
auto attributeDescriptions = Vertex::getAttributeDescriptions();
VkPipelineVertexInputStateCreateInfo vertexInputInfo {};
vertexInputInfo.sType = VK_STRUCTURE_TYPE_PIPELINE_VERTEX_INPUT_STATE_CREATE_INFO;
vertexInputInfo.vertexBindingDescriptionCount = 1;
vertexInputInfo.pVertexBindingDescriptions = &bindingDescription;
vertexInputInfo.vertexAttributeDescriptionCount = attributeDescriptions.size();
vertexInputInfo.pVertexAttributeDescriptions = attributeDescriptions.data();
VkPipelineInputAssemblyStateCreateInfo inputAssembly {};
inputAssembly.sType = VK_STRUCTURE_TYPE_PIPELINE_INPUT_ASSEMBLY_STATE_CREATE_INFO;
inputAssembly.topology = VK_PRIMITIVE_TOPOLOGY_TRIANGLE_LIST;
inputAssembly.primitiveRestartEnable = VK_FALSE;
std::vector<VkDynamicState> dynamicStates = {
VK_DYNAMIC_STATE_VIEWPORT,
VK_DYNAMIC_STATE_SCISSOR
};
VkPipelineDynamicStateCreateInfo dynamicState {};
dynamicState.sType = VK_STRUCTURE_TYPE_PIPELINE_DYNAMIC_STATE_CREATE_INFO;
dynamicState.dynamicStateCount = dynamicStates.size();
dynamicState.pDynamicStates = dynamicStates.data();
VkPipelineViewportStateCreateInfo viewportState {};
viewportState.sType = VK_STRUCTURE_TYPE_PIPELINE_VIEWPORT_STATE_CREATE_INFO;
viewportState.viewportCount = 1;
viewportState.scissorCount = 1;
VkPipelineRasterizationStateCreateInfo rasterizer {};
rasterizer.sType = VK_STRUCTURE_TYPE_PIPELINE_RASTERIZATION_STATE_CREATE_INFO;
rasterizer.depthClampEnable = VK_FALSE;
rasterizer.rasterizerDiscardEnable = VK_FALSE;
rasterizer.polygonMode = VK_POLYGON_MODE_FILL;
rasterizer.lineWidth = 1;
rasterizer.cullMode = VK_CULL_MODE_BACK_BIT;
rasterizer.frontFace = VK_FRONT_FACE_CLOCKWISE;
rasterizer.depthBiasClamp = VK_FALSE;
VkPipelineMultisampleStateCreateInfo multisample {};
multisample.sType = VK_STRUCTURE_TYPE_PIPELINE_MULTISAMPLE_STATE_CREATE_INFO;
multisample.sampleShadingEnable = VK_FALSE;
multisample.rasterizationSamples = VK_SAMPLE_COUNT_1_BIT;
VkPipelineColorBlendAttachmentState colorBlendAttachment {};
colorBlendAttachment.colorWriteMask = VK_COLOR_COMPONENT_R_BIT | VK_COLOR_COMPONENT_G_BIT | VK_COLOR_COMPONENT_B_BIT | VK_COLOR_COMPONENT_A_BIT;
colorBlendAttachment.blendEnable = VK_FALSE;
VkPipelineColorBlendStateCreateInfo colorBlending {};
colorBlending.sType = VK_STRUCTURE_TYPE_PIPELINE_COLOR_BLEND_STATE_CREATE_INFO;
colorBlending.logicOpEnable = VK_FALSE;
colorBlending.attachmentCount = 1;
colorBlending.pAttachments = &colorBlendAttachment;
VkPipelineLayoutCreateInfo pipelineLayoutInfo {};
pipelineLayoutInfo.sType = VK_STRUCTURE_TYPE_PIPELINE_LAYOUT_CREATE_INFO;
vkCreatePipelineLayout(device, &pipelineLayoutInfo, nullptr, &pipelineLayout);
VkGraphicsPipelineCreateInfo pipelineInfo {};
{
pipelineInfo.sType = VK_STRUCTURE_TYPE_GRAPHICS_PIPELINE_CREATE_INFO;
pipelineInfo.stageCount = 2;
pipelineInfo.pStages = shaderStages;
pipelineInfo.pVertexInputState = &vertexInputInfo;
pipelineInfo.pInputAssemblyState = &inputAssembly;
pipelineInfo.pViewportState = &viewportState;
pipelineInfo.pRasterizationState = &rasterizer;
pipelineInfo.pMultisampleState = &multisample;
pipelineInfo.pColorBlendState = &colorBlending;
pipelineInfo.pDynamicState = &dynamicState;
pipelineInfo.layout = pipelineLayout;
pipelineInfo.renderPass = renderPass;
pipelineInfo.subpass = 0;
}
vkCreateGraphicsPipelines(device, VK_NULL_HANDLE, 1, &pipelineInfo, nullptr, &graphicsPipeline);
vkDestroyShaderModule(device, vertShaderModule, nullptr);
vkDestroyShaderModule(device, fragShaderModule, nullptr);
}
VkPipeline graphicsPipeline = VK_NULL_HANDLE;
std::vector<VkFramebuffer> swapchainFramebuffers;
void createFramebuffers(){
swapchainFramebuffers.resize(swapchainImageViews.size());
for (size_t i = 0; i < swapchainImageViews.size(); i++){
VkImageView attachments[] = {swapchainImageViews[i]};
VkFramebufferCreateInfo framebufferInfo {};
framebufferInfo.sType = VK_STRUCTURE_TYPE_FRAMEBUFFER_CREATE_INFO;
framebufferInfo.renderPass = renderPass;
framebufferInfo.attachmentCount = 1;
framebufferInfo.pAttachments = attachments;
framebufferInfo.width = swapchainExtent.width;
framebufferInfo.height = swapchainExtent.height;
framebufferInfo.layers = 1;
vkCreateFramebuffer(device, &framebufferInfo, nullptr, &swapchainFramebuffers[i]);
}
}
VkBuffer vertexBuffer = VK_NULL_HANDLE;
VkDeviceMemory vertexBufferMemory = VK_NULL_HANDLE;
uint32_t findMemoryType(uint32_t typeFilter, VkMemoryPropertyFlags propertyFlags){
VkPhysicalDeviceMemoryProperties memoryProperties;
vkGetPhysicalDeviceMemoryProperties(physicalDevice, &memoryProperties);
for (uint32_t type = 0; type < memoryProperties.memoryTypeCount; type++){
if ((typeFilter & (1 << type)) && (memoryProperties.memoryTypes[type].propertyFlags & propertyFlags)){
return type;
}
}
throw std::runtime_error("failed to find suitable memory type!");
}
void createVertexBuffer(){
VkBufferCreateInfo bufferInfo{};
bufferInfo.sType = VK_STRUCTURE_TYPE_BUFFER_CREATE_INFO;
bufferInfo.size = vertices.size() * sizeof(Vertex);
bufferInfo.usage = VK_BUFFER_USAGE_VERTEX_BUFFER_BIT;
bufferInfo.sharingMode = VK_SHARING_MODE_EXCLUSIVE;
vkCreateBuffer(device, &bufferInfo, nullptr, &vertexBuffer);
VkMemoryRequirements memoryRequirements;
vkGetBufferMemoryRequirements(device, vertexBuffer, &memoryRequirements);
VkMemoryAllocateInfo allocateInfo {};
allocateInfo.sType = VK_STRUCTURE_TYPE_MEMORY_ALLOCATE_INFO;
allocateInfo.allocationSize = memoryRequirements.size;
allocateInfo.memoryTypeIndex = findMemoryType(memoryRequirements.memoryTypeBits, VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | VK_MEMORY_PROPERTY_HOST_COHERENT_BIT);
vkAllocateMemory(device, &allocateInfo, nullptr, &vertexBufferMemory);
vkBindBufferMemory(device, vertexBuffer, vertexBufferMemory, 0);
void* data;
vkMapMemory(device, vertexBufferMemory, 0, bufferInfo.size, 0, &data);
memcpy(data, vertices.data(), bufferInfo.size);
vkUnmapMemory(device, vertexBufferMemory);
}
VkCommandPool commandPool = VK_NULL_HANDLE;
std::vector<VkCommandBuffer> commandBuffers;
void createCommandPool(){
QueueFamilyIndices indices = findQueueFamilies(physicalDevice);
VkCommandPoolCreateInfo poolInfo {};
poolInfo.sType = VK_STRUCTURE_TYPE_COMMAND_POOL_CREATE_INFO;
poolInfo.flags = VK_COMMAND_POOL_CREATE_RESET_COMMAND_BUFFER_BIT;
poolInfo.queueFamilyIndex = indices.graphicsFamily.value();
vkCreateCommandPool(device, &poolInfo, nullptr, &commandPool);
}
void createCommandBuffers(){
commandBuffers.resize(MAX_FRAMES_IN_FLIGHT);
VkCommandBufferAllocateInfo allocateInfo {};
allocateInfo.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_ALLOCATE_INFO;
allocateInfo.commandPool = commandPool;
allocateInfo.level = VK_COMMAND_BUFFER_LEVEL_PRIMARY;
allocateInfo.commandBufferCount = commandBuffers.size();
vkAllocateCommandBuffers(device, &allocateInfo, commandBuffers.data());
}
void recordCommandBuffer(VkCommandBuffer commandBuffer, uint32_t imageIndex){
VkCommandBufferBeginInfo beginInfo {};
beginInfo.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_BEGIN_INFO;
vkBeginCommandBuffer(commandBuffer, &beginInfo);
VkRenderPassBeginInfo renderPassInfo {};
renderPassInfo.sType = VK_STRUCTURE_TYPE_RENDER_PASS_BEGIN_INFO;
renderPassInfo.renderPass = renderPass;
renderPassInfo.framebuffer = swapchainFramebuffers[imageIndex];
renderPassInfo.renderArea.offset = {0, 0};
renderPassInfo.renderArea.extent = swapchainExtent;
VkClearValue clearColor = {{{0, 0, 0, 1}}};
renderPassInfo.clearValueCount = 1;
renderPassInfo.pClearValues = &clearColor;
vkCmdBeginRenderPass(commandBuffer, &renderPassInfo, VK_SUBPASS_CONTENTS_INLINE);
vkCmdBindPipeline(commandBuffer, VK_PIPELINE_BIND_POINT_GRAPHICS, graphicsPipeline);
VkViewport viewport {};
viewport.x = 0;
viewport.y = 0;
viewport.width = static_cast<float>(swapchainExtent.width);
viewport.height = static_cast<float>(swapchainExtent.height);
viewport.minDepth = 0;
viewport.maxDepth = 1;
vkCmdSetViewport(commandBuffer, 0, 1, &viewport);
VkRect2D scissor {};
scissor.offset = {0, 0};
scissor.extent = swapchainExtent;
vkCmdSetScissor(commandBuffer, 0, 1, &scissor);
VkBuffer buffers[] = {vertexBuffer};
VkDeviceSize offsets[] = {0};
vkCmdBindVertexBuffers(commandBuffer, 0, 1, buffers, offsets);
vkCmdDraw(commandBuffer, vertices.size(), 1, 0, 0);
vkCmdEndRenderPass(commandBuffer);
vkEndCommandBuffer(commandBuffer);
}
std::vector<VkSemaphore> imageAvailableSemaphores;
std::vector<VkSemaphore> renderFinishedSemaphores;
std::vector<VkFence> inFlightFences;
void createSyncObjects(){
imageAvailableSemaphores.resize(MAX_FRAMES_IN_FLIGHT);
renderFinishedSemaphores.resize(MAX_FRAMES_IN_FLIGHT);
inFlightFences.resize(MAX_FRAMES_IN_FLIGHT);
VkSemaphoreCreateInfo semaphoreInfo {};
semaphoreInfo.sType = VK_STRUCTURE_TYPE_SEMAPHORE_CREATE_INFO;
VkFenceCreateInfo fenceInfo {};
fenceInfo.sType = VK_STRUCTURE_TYPE_FENCE_CREATE_INFO;
fenceInfo.flags = VK_FENCE_CREATE_SIGNALED_BIT;
for (size_t i = 0; i < MAX_FRAMES_IN_FLIGHT; i++){
vkCreateSemaphore(device, &semaphoreInfo, nullptr, &imageAvailableSemaphores[i]);
vkCreateSemaphore(device, &semaphoreInfo, nullptr, &renderFinishedSemaphores[i]);
vkCreateFence(device, &fenceInfo, nullptr, &inFlightFences[i]);
}
}
size_t currentFrame = 0;
void drawFrame(){
vkWaitForFences(device, 1, &inFlightFences[currentFrame], VK_TRUE, UINT64_MAX);
uint32_t imageIndex;
VkResult result = vkAcquireNextImageKHR(device, swapchain, UINT64_MAX, imageAvailableSemaphores[currentFrame], VK_NULL_HANDLE, &imageIndex);
if (result == VK_ERROR_OUT_OF_DATE_KHR){
recreateSwapchain();
return;
}
vkResetFences(device, 1, &inFlightFences[currentFrame]);
vkResetCommandBuffer(commandBuffers[currentFrame], 0);
recordCommandBuffer(commandBuffers[currentFrame], imageIndex);
VkSubmitInfo submitInfo {};
submitInfo.sType = VK_STRUCTURE_TYPE_SUBMIT_INFO;
VkSemaphore waitSemaphores[] = {imageAvailableSemaphores[currentFrame]};
VkPipelineStageFlags waitStages[] = {VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT};
submitInfo.waitSemaphoreCount = 1;
submitInfo.pWaitSemaphores = waitSemaphores;
submitInfo.pWaitDstStageMask = waitStages;
submitInfo.commandBufferCount = 1;
submitInfo.pCommandBuffers = &commandBuffers[currentFrame];
VkSemaphore signalSemaphores[] = {renderFinishedSemaphores[currentFrame]};
submitInfo.signalSemaphoreCount = 1;
submitInfo.pSignalSemaphores = signalSemaphores;
vkQueueSubmit(graphicsQueue, 1, &submitInfo, inFlightFences[currentFrame]);
VkPresentInfoKHR presentInfo {};
presentInfo.sType = VK_STRUCTURE_TYPE_PRESENT_INFO_KHR;
presentInfo.waitSemaphoreCount = 1;
presentInfo.pWaitSemaphores = signalSemaphores;
VkSwapchainKHR swapchains[] = {swapchain};
presentInfo.swapchainCount = 1;
presentInfo.pSwapchains = swapchains;
presentInfo.pImageIndices = &imageIndex;
result = vkQueuePresentKHR(presentQueue, &presentInfo);
if (result == VK_ERROR_OUT_OF_DATE_KHR || result == VK_SUBOPTIMAL_KHR){
recreateSwapchain();
return;
}
currentFrame = (currentFrame + 1) % MAX_FRAMES_IN_FLIGHT;
}
void mainLoop(){
while (!glfwWindowShouldClose(window)){
glfwPollEvents();
drawFrame();
}
vkDeviceWaitIdle(device);
}
void cleanup(){
cleanupSwapchain();
vkDestroyBuffer(device, vertexBuffer, nullptr);
vkFreeMemory(device, vertexBufferMemory, nullptr);
for (size_t i = 0; i < MAX_FRAMES_IN_FLIGHT; i++){
vkDestroySemaphore(device, imageAvailableSemaphores[i], nullptr);
vkDestroySemaphore(device, renderFinishedSemaphores[i], nullptr);
vkDestroyFence(device, inFlightFences[i], nullptr);
}
vkDestroyCommandPool(device, commandPool, nullptr);
vkDestroyPipeline(device, graphicsPipeline, nullptr);
vkDestroyPipelineLayout(device, pipelineLayout, nullptr);
vkDestroyRenderPass(device, renderPass, nullptr);
vkDestroyDevice(device, nullptr);
vkDestroySurfaceKHR(instance, surface, nullptr);
vkDestroyInstance(instance, nullptr);
glfwDestroyWindow(window);
glfwTerminate();
}
};
int main() { int main() {
Application application;
MyApp app;
try {
app.run();
} catch (const std::exception& e){
std::cerr << e.what() << "\n";
return EXIT_FAILURE;
}
return EXIT_SUCCESS;
} }

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#include "pipeline.hpp"

0
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#include "application.hpp"
Application::Application() {
instance = new Instance;
swapchain = new Swapchain(instance);
pipeline = new Pipeline(instance, swapchain->renderPass);
buffer = new Buffer(instance);
commandPool = new CommandPool(instance);
createSyncObjects();
mainLoop();
}
void Application::mainLoop() {
while (!glfwWindowShouldClose(instance->window)){
glfwPollEvents();
drawFrame();
}
vkDeviceWaitIdle(instance->device);
}
void Application::drawFrame() {
vkWaitForFences(instance->device, 1, &inFlightFences[currentFrame], VK_TRUE, UINT64_MAX);
uint32_t imageIndex;
VkResult result = vkAcquireNextImageKHR(instance->device, swapchain->handle, UINT64_MAX, imageAvailableSemaphores[currentFrame], VK_NULL_HANDLE, &imageIndex);
if (result == VK_ERROR_OUT_OF_DATE_KHR){
swapchain->recreateSwapchain();
return;
}
vkResetFences(instance->device, 1, &inFlightFences[currentFrame]);
vkResetCommandBuffer(commandPool->buffers[currentFrame], 0);
recordCommandBuffer(commandPool->buffers[currentFrame], imageIndex);
VkSubmitInfo submitInfo {};
submitInfo.sType = VK_STRUCTURE_TYPE_SUBMIT_INFO;
VkSemaphore waitSemaphores[] = {imageAvailableSemaphores[currentFrame]};
VkPipelineStageFlags waitStages[] = {VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT};
submitInfo.waitSemaphoreCount = 1;
submitInfo.pWaitSemaphores = waitSemaphores;
submitInfo.pWaitDstStageMask = waitStages;
submitInfo.commandBufferCount = 1;
submitInfo.pCommandBuffers = &commandPool->buffers[currentFrame];
VkSemaphore signalSemaphores[] = {renderFinishedSemaphores[currentFrame]};
submitInfo.signalSemaphoreCount = 1;
submitInfo.pSignalSemaphores = signalSemaphores;
vkQueueSubmit(instance->graphicsQueue, 1, &submitInfo, inFlightFences[currentFrame]);
VkPresentInfoKHR presentInfo {};
presentInfo.sType = VK_STRUCTURE_TYPE_PRESENT_INFO_KHR;
presentInfo.waitSemaphoreCount = 1;
presentInfo.pWaitSemaphores = signalSemaphores;
VkSwapchainKHR swapchains[] = {swapchain->handle};
presentInfo.swapchainCount = 1;
presentInfo.pSwapchains = swapchains;
presentInfo.pImageIndices = &imageIndex;
result = vkQueuePresentKHR(instance->presentQueue, &presentInfo);
if (result == VK_ERROR_OUT_OF_DATE_KHR || result == VK_SUBOPTIMAL_KHR){
swapchain->recreateSwapchain();
return;
}
currentFrame = (currentFrame + 1) % MAX_FRAMES_IN_FLIGHT;
}
void Application::createSyncObjects() {
imageAvailableSemaphores.resize(MAX_FRAMES_IN_FLIGHT);
renderFinishedSemaphores.resize(MAX_FRAMES_IN_FLIGHT);
inFlightFences.resize(MAX_FRAMES_IN_FLIGHT);
VkSemaphoreCreateInfo semaphoreInfo {};
semaphoreInfo.sType = VK_STRUCTURE_TYPE_SEMAPHORE_CREATE_INFO;
VkFenceCreateInfo fenceInfo {};
fenceInfo.sType = VK_STRUCTURE_TYPE_FENCE_CREATE_INFO;
fenceInfo.flags = VK_FENCE_CREATE_SIGNALED_BIT;
for (size_t i = 0; i < MAX_FRAMES_IN_FLIGHT; i++){
vkCreateSemaphore(instance->device, &semaphoreInfo, nullptr, &imageAvailableSemaphores[i]);
vkCreateSemaphore(instance->device, &semaphoreInfo, nullptr, &renderFinishedSemaphores[i]);
vkCreateFence(instance->device, &fenceInfo, nullptr, &inFlightFences[i]);
}
}
Application::~Application() {
delete swapchain;
for (size_t i = 0; i < MAX_FRAMES_IN_FLIGHT; i++){
vkDestroySemaphore(instance->device, imageAvailableSemaphores[i], nullptr);
vkDestroySemaphore(instance->device, renderFinishedSemaphores[i], nullptr);
vkDestroyFence(instance->device, inFlightFences[i], nullptr);
}
delete commandPool;
delete buffer;
delete pipeline;
delete instance;
}

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#pragma once
#include <GLFW/glfw3.h>
#include <glm/glm.hpp>
#include <iostream>
#include <vector>
#include <cstring>
#include <optional>
#include <set>
#include <fstream>
#include <numeric>
#include <chrono>
#include <array>
#include "vertex.hpp"
#include "swapchain.hpp"
#include "pipeline.hpp"
#include "instance.hpp"
#include "buffer.hpp"
#include "command_pool.hpp"
constexpr int MAX_FRAMES_IN_FLIGHT = 2;
class Timer {
public:
explicit Timer(){
start = std::chrono::system_clock::now();
}
~Timer(){
size_t nanoseconds = (std::chrono::system_clock::now() - start).count();
printf("Timer: %zu mus\n", nanoseconds / 1000);
}
private:
std::chrono::time_point<std::chrono::system_clock> start;
};
class Application {
public:
explicit Application();
~Application();
private:
Instance* instance = nullptr;
Swapchain* swapchain = nullptr;
Pipeline* pipeline = nullptr;
Buffer* buffer = nullptr;
CommandPool* commandPool = nullptr;
void recordCommandBuffer(VkCommandBuffer commandBuffer, uint32_t imageIndex){
VkCommandBufferBeginInfo beginInfo {};
beginInfo.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_BEGIN_INFO;
vkBeginCommandBuffer(commandBuffer, &beginInfo);
VkRenderPassBeginInfo renderPassInfo {};
renderPassInfo.sType = VK_STRUCTURE_TYPE_RENDER_PASS_BEGIN_INFO;
renderPassInfo.renderPass = swapchain->renderPass;
renderPassInfo.framebuffer = swapchain->frameBuffers[imageIndex];
renderPassInfo.renderArea.offset = {0, 0};
renderPassInfo.renderArea.extent = swapchain->extent;
VkClearValue clearColor = {{{0, 0, 0, 1}}};
renderPassInfo.clearValueCount = 1;
renderPassInfo.pClearValues = &clearColor;
vkCmdBeginRenderPass(commandBuffer, &renderPassInfo, VK_SUBPASS_CONTENTS_INLINE);
vkCmdBindPipeline(commandBuffer, VK_PIPELINE_BIND_POINT_GRAPHICS, pipeline->graphicsPipeline);
VkViewport viewport {};
viewport.x = 0;
viewport.y = 0;
viewport.width = static_cast<float>(swapchain->extent.width);
viewport.height = static_cast<float>(swapchain->extent.height);
viewport.minDepth = 0;
viewport.maxDepth = 1;
vkCmdSetViewport(commandBuffer, 0, 1, &viewport);
VkRect2D scissor {};
scissor.offset = {0, 0};
scissor.extent = swapchain->extent;
vkCmdSetScissor(commandBuffer, 0, 1, &scissor);
VkBuffer buffers[] = {buffer->vertexHandle};
VkDeviceSize offsets[] = {0};
vkCmdBindVertexBuffers(commandBuffer, 0, 1, buffers, offsets);
vkCmdDraw(commandBuffer, 3, 1, 0, 0);
vkCmdEndRenderPass(commandBuffer);
vkEndCommandBuffer(commandBuffer);
}
std::vector<VkSemaphore> imageAvailableSemaphores;
std::vector<VkSemaphore> renderFinishedSemaphores;
std::vector<VkFence> inFlightFences;
size_t currentFrame = 0;
void drawFrame();
void createSyncObjects();
void mainLoop();
};

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src/vulkan/buffer.cpp
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#include <vector>
#include <cstring>
#include "buffer.hpp"
#include "vertex.hpp"
const std::vector<Vertex> vertices = {
{{0.0, -0.5}, {1, 0, 0}},
{{0.5, 0.5}, {0, 1, 0}},
{{-0.5, 0.5}, {0, 0, 1}}
};
Buffer::Buffer(Instance* instance) : instance(instance) {
VkBufferCreateInfo bufferInfo{};
bufferInfo.sType = VK_STRUCTURE_TYPE_BUFFER_CREATE_INFO;
bufferInfo.size = vertices.size() * sizeof(Vertex);
bufferInfo.usage = VK_BUFFER_USAGE_VERTEX_BUFFER_BIT;
bufferInfo.sharingMode = VK_SHARING_MODE_EXCLUSIVE;
vkCreateBuffer(instance->device, &bufferInfo, nullptr, &vertexHandle);
VkMemoryRequirements memoryRequirements;
vkGetBufferMemoryRequirements(instance->device, vertexHandle, &memoryRequirements);
VkMemoryAllocateInfo allocateInfo {};
allocateInfo.sType = VK_STRUCTURE_TYPE_MEMORY_ALLOCATE_INFO;
allocateInfo.allocationSize = memoryRequirements.size;
allocateInfo.memoryTypeIndex = findMemoryType(memoryRequirements.memoryTypeBits, VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | VK_MEMORY_PROPERTY_HOST_COHERENT_BIT);
vkAllocateMemory(instance->device, &allocateInfo, nullptr, &vertexMemory);
vkBindBufferMemory(instance->device, vertexHandle, vertexMemory, 0);
void* data;
vkMapMemory(instance->device, vertexMemory, 0, bufferInfo.size, 0, &data);
memcpy(data, vertices.data(), bufferInfo.size);
vkUnmapMemory(instance->device, vertexMemory);
}
uint32_t Buffer::findMemoryType(uint32_t typeFilter, VkMemoryPropertyFlags propertyFlags) {
VkPhysicalDeviceMemoryProperties memoryProperties;
vkGetPhysicalDeviceMemoryProperties(instance->physicalDevice, &memoryProperties);
for (uint32_t type = 0; type < memoryProperties.memoryTypeCount; type++){
if ((typeFilter & (1 << type)) && (memoryProperties.memoryTypes[type].propertyFlags & propertyFlags)){
return type;
}
}
throw std::runtime_error("failed to find suitable memory type!");
}
Buffer::~Buffer() {
vkFreeMemory(instance->device, vertexMemory, nullptr);
vkDestroyBuffer(instance->device, vertexHandle, nullptr);
}

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#pragma once
#include <vulkan/vulkan_core.h>
#include <stdexcept>
#include "instance.hpp"
class Buffer {
public:
explicit Buffer(Instance* instance);
~Buffer();
VkBuffer vertexHandle = VK_NULL_HANDLE;
private:
Instance* instance = nullptr;
VkDeviceMemory vertexMemory = VK_NULL_HANDLE;
uint32_t findMemoryType(uint32_t typeFilter, VkMemoryPropertyFlags propertyFlags);
};

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src/vulkan/command_pool.cpp
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#include "command_pool.hpp"
#include "application.hpp"
CommandPool::CommandPool(Instance *instance) : instance(instance) {
Instance::QueueFamilyIndices indices = Instance::findQueueFamilies(instance->physicalDevice, instance->surface);
VkCommandPoolCreateInfo poolInfo {};
poolInfo.sType = VK_STRUCTURE_TYPE_COMMAND_POOL_CREATE_INFO;
poolInfo.flags = VK_COMMAND_POOL_CREATE_RESET_COMMAND_BUFFER_BIT;
poolInfo.queueFamilyIndex = indices.graphicsFamily.value();
vkCreateCommandPool(instance->device, &poolInfo, nullptr, &handle);
createBuffers();
}
void CommandPool::createBuffers() {
buffers.resize(MAX_FRAMES_IN_FLIGHT);
VkCommandBufferAllocateInfo allocateInfo {};
allocateInfo.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_ALLOCATE_INFO;
allocateInfo.commandPool = handle;
allocateInfo.level = VK_COMMAND_BUFFER_LEVEL_PRIMARY;
allocateInfo.commandBufferCount = buffers.size();
vkAllocateCommandBuffers(instance->device, &allocateInfo, buffers.data());
}
CommandPool::~CommandPool() {
vkFreeCommandBuffers(instance->device, handle, buffers.size(), buffers.data());
vkDestroyCommandPool(instance->device, handle, nullptr);
}

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#pragma once
#include <vector>
#include "instance.hpp"
class CommandPool {
public:
explicit CommandPool(Instance* instance);
~CommandPool();
std::vector<VkCommandBuffer> buffers;
private:
Instance* instance;
VkCommandPool handle = VK_NULL_HANDLE;
void createBuffers();
};

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src/vulkan/instance.cpp
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#include <stdexcept>
#include <vector>
#include "instance.hpp"
#include "swapchain.hpp"
#include <cstring>
const std::vector<const char*> deviceExtensions = {
VK_KHR_SWAPCHAIN_EXTENSION_NAME
};
#ifndef NDEBUG
#define ENABLE_VALIDATION_LAYERS
#endif
#ifdef ENABLE_VALIDATION_LAYERS
const std::vector<const char*> validationLayers = {
"VK_LAYER_KHRONOS_validation"
};
bool checkValidationLayerSupport();
#endif
#ifdef ENABLE_VALIDATION_LAYERS
bool checkValidationLayerSupport(){
uint32_t layerCount;
vkEnumerateInstanceLayerProperties(&layerCount, nullptr);
std::vector<VkLayerProperties> availableLayers(layerCount);
vkEnumerateInstanceLayerProperties(&layerCount, availableLayers.data());
for (const char* layerName : validationLayers){
bool layerFound = false;
for (const auto& layerProperties : availableLayers){
if (strcmp(layerName, layerProperties.layerName) == 0){
layerFound = true;
break;
}
}
if (!layerFound){
return false;
}
}
return true;
}
#endif
Instance::Instance() {
initWindow();
createInstance();
createSurface();
pickPhysicalDevice();
createLogicalDevice();
}
void Instance::initWindow() {
glfwInit();
glfwWindowHint(GLFW_CLIENT_API, GLFW_NO_API);
glfwWindowHint(GLFW_RESIZABLE, GLFW_TRUE);
window = glfwCreateWindow(800, 600, "Vulkan Simulation", nullptr, nullptr);
}
void Instance::createInstance() {
#ifdef ENABLE_VALIDATION_LAYERS
if (!checkValidationLayerSupport()){
throw std::runtime_error("validation layers requested, but not available!");
}
#endif
VkApplicationInfo applicationInfo {};
applicationInfo.sType = VK_STRUCTURE_TYPE_APPLICATION_INFO;
applicationInfo.pApplicationName = "Coole Simulation";
applicationInfo.applicationVersion = VK_MAKE_VERSION(1, 0, 0);
applicationInfo.pEngineName = "No Engine";
applicationInfo.engineVersion = VK_MAKE_VERSION(1, 0, 0);
applicationInfo.apiVersion = VK_API_VERSION_1_0;
uint32_t glfwExtensionCount = 0;
const char** glfwExtensions = glfwGetRequiredInstanceExtensions(&glfwExtensionCount);
VkInstanceCreateInfo instanceCreateInfo {};
instanceCreateInfo.sType = VK_STRUCTURE_TYPE_INSTANCE_CREATE_INFO;
instanceCreateInfo.pApplicationInfo = &applicationInfo;
instanceCreateInfo.enabledExtensionCount = glfwExtensionCount;
instanceCreateInfo.ppEnabledExtensionNames = glfwExtensions;
#ifdef ENABLE_VALIDATION_LAYERS
instanceCreateInfo.enabledLayerCount = validationLayers.size();
instanceCreateInfo.ppEnabledLayerNames = validationLayers.data();
#else
instanceCreateInfo.enabledLayerCount = 0;
#endif
vkCreateInstance(&instanceCreateInfo, nullptr, &handle);
}
void Instance::createSurface() {
glfwCreateWindowSurface(handle, window, nullptr, &surface);
}
void Instance::pickPhysicalDevice() {
uint32_t deviceCount = 0;
vkEnumeratePhysicalDevices(handle, &deviceCount, nullptr);
if (deviceCount == 0){
throw std::runtime_error("failed to find GPUs with Vulkan support!");
}
std::vector<VkPhysicalDevice> devices(deviceCount);
vkEnumeratePhysicalDevices(handle, &deviceCount, devices.data());
for (const VkPhysicalDevice &device : devices){
if (isDeviceSuitable(device)){
physicalDevice = device;
break;
}
}
if (physicalDevice == VK_NULL_HANDLE){
throw std::runtime_error("failed to find a suitable GPU!");
}
VkPhysicalDeviceProperties properties;
vkGetPhysicalDeviceProperties(physicalDevice, &properties);
printf("Picked physical device: %s\n", properties.deviceName);
}
void Instance::createLogicalDevice() {
QueueFamilyIndices indices = findQueueFamilies(physicalDevice, surface);
std::vector<VkDeviceQueueCreateInfo> queueCreateInfos;
float queuePriority = 1.0f;
for (uint32_t queueFamily : indices.uniqueQueueFamilies()){
VkDeviceQueueCreateInfo queueCreateInfo {};
queueCreateInfo.sType = VK_STRUCTURE_TYPE_DEVICE_QUEUE_CREATE_INFO;
queueCreateInfo.queueFamilyIndex = queueFamily;
queueCreateInfo.queueCount = 1;
queueCreateInfo.pQueuePriorities = &queuePriority;
queueCreateInfos.push_back(queueCreateInfo);
}
VkPhysicalDeviceFeatures deviceFeatures {};
VkDeviceCreateInfo createInfo {};
createInfo.sType = VK_STRUCTURE_TYPE_DEVICE_CREATE_INFO;
createInfo.pQueueCreateInfos = queueCreateInfos.data();
createInfo.queueCreateInfoCount = queueCreateInfos.size();
createInfo.pEnabledFeatures = &deviceFeatures;
createInfo.enabledExtensionCount = deviceExtensions.size();
createInfo.ppEnabledExtensionNames = deviceExtensions.data();
#ifdef ENABLE_VALIDATION_LAYERS
createInfo.enabledLayerCount = validationLayers.size();
createInfo.ppEnabledLayerNames = validationLayers.data();
#else
createInfo.enabledLayerCount = 0;
#endif
vkCreateDevice(physicalDevice, &createInfo, nullptr, &device);
vkGetDeviceQueue(device, indices.graphicsFamily.value(), 0, &graphicsQueue);
vkGetDeviceQueue(device, indices.presentFamily.value(), 0, &presentQueue);
}
Instance::QueueFamilyIndices Instance::findQueueFamilies(VkPhysicalDevice device, VkSurfaceKHR surface) {
uint32_t queueFamilyCount = 0;
vkGetPhysicalDeviceQueueFamilyProperties(device, &queueFamilyCount, nullptr);
std::vector<VkQueueFamilyProperties> queueFamilies(queueFamilyCount);
vkGetPhysicalDeviceQueueFamilyProperties(device, &queueFamilyCount, queueFamilies.data());
QueueFamilyIndices indices {};
uint32_t i = 0;
for (const VkQueueFamilyProperties& queueFamilyProperties : queueFamilies){
if (queueFamilyProperties.queueFlags & VK_QUEUE_GRAPHICS_BIT){
indices.graphicsFamily = i;
}
if (queueFamilyProperties.queueFlags & VK_QUEUE_COMPUTE_BIT){
indices.computeFamily = i;
}
VkBool32 presentSupport = false;
vkGetPhysicalDeviceSurfaceSupportKHR(device, i, surface, &presentSupport);
if (presentSupport){
indices.presentFamily = i;
}
if (indices.isComplete()){
break;
}
i++;
}
return indices;
}
bool Instance::isDeviceSuitable(VkPhysicalDevice physicalDevice) {
VkPhysicalDeviceProperties deviceProperties;
vkGetPhysicalDeviceProperties(physicalDevice, &deviceProperties);
VkPhysicalDeviceFeatures deviceFeatures;
vkGetPhysicalDeviceFeatures(physicalDevice, &deviceFeatures);
QueueFamilyIndices indices = findQueueFamilies(physicalDevice, surface);
bool extensionsSupported = checkDeviceExtensionSupport(physicalDevice);
bool swapChainAdequate = false;
if (extensionsSupported){
SwapchainSupportDetails details = querySwapchainSupport(physicalDevice, surface);
swapChainAdequate = !details.formats.empty() && !details.presentModes.empty();
}
return indices.isComplete() && extensionsSupported && swapChainAdequate;
}
bool Instance::checkDeviceExtensionSupport(VkPhysicalDevice device) {
std::set<std::string> required(deviceExtensions.begin(), deviceExtensions.end());
uint32_t extensionCount;
vkEnumerateDeviceExtensionProperties(device, nullptr, &extensionCount, nullptr);
std::vector<VkExtensionProperties> availableExtensions(extensionCount);
vkEnumerateDeviceExtensionProperties(device, nullptr, &extensionCount, availableExtensions.data());
for (const VkExtensionProperties& extension : availableExtensions){
required.erase(extension.extensionName);
}
return required.empty();
}
Instance::~Instance() {
vkDestroyDevice(device, nullptr);
vkDestroySurfaceKHR(handle, surface, nullptr);
vkDestroyInstance(handle, nullptr);
glfwDestroyWindow(window);
glfwTerminate();
}

46
src/vulkan/instance.hpp
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#pragma once
#include <vulkan/vulkan.h>
#include <GLFW/glfw3.h>
#include <optional>
#include <set>
class Instance {
public:
explicit Instance();
~Instance();
GLFWwindow *window = nullptr;
VkSurfaceKHR surface = VK_NULL_HANDLE;
VkPhysicalDevice physicalDevice = VK_NULL_HANDLE;
VkDevice device = VK_NULL_HANDLE;
VkQueue graphicsQueue = VK_NULL_HANDLE;
VkQueue presentQueue = VK_NULL_HANDLE;
struct QueueFamilyIndices {
std::optional<uint32_t> graphicsFamily;
std::optional<uint32_t> computeFamily;
std::optional<uint32_t> presentFamily;
bool isComplete() const {
return graphicsFamily.has_value() && computeFamily.has_value() && presentFamily.has_value();
}
std::set<uint32_t> uniqueQueueFamilies(){
return {graphicsFamily.value(), presentFamily.value(), computeFamily.value()};
}
};
static QueueFamilyIndices findQueueFamilies(VkPhysicalDevice device, VkSurfaceKHR surface);
private:
VkInstance handle = VK_NULL_HANDLE;
void initWindow();
void createInstance();
void createSurface();
void pickPhysicalDevice();
void createLogicalDevice();
bool isDeviceSuitable(VkPhysicalDevice physicalDevice);
static bool checkDeviceExtensionSupport(VkPhysicalDevice device);
};

149
src/vulkan/pipeline.cpp
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#include <vector>
#include <fstream>
#include "pipeline.hpp"
#include "vertex.hpp"
std::vector<char> readFile(const std::string& fileName){
std::ifstream file(fileName, std::ios::ate | std::ios::binary);
if (!file.is_open()){
throw std::runtime_error("failed to open file!");
}
size_t fileSize = file.tellg();
std::vector<char> buffer(fileSize);
file.seekg(0);
file.read(buffer.data(), static_cast<std::streamsize>(fileSize));
file.close();
return buffer;
}
Pipeline::Pipeline(Instance* instance, VkRenderPass renderPass) : instance(instance) {
auto vertShaderCode = readFile("shaders/vert.spv");
auto fragShaderCode = readFile("shaders/frag.spv");
VkShaderModule vertShaderModule = createShaderModule(vertShaderCode);
VkShaderModule fragShaderModule = createShaderModule(fragShaderCode);
VkPipelineShaderStageCreateInfo vertShaderStageInfo {};
vertShaderStageInfo.sType = VK_STRUCTURE_TYPE_PIPELINE_SHADER_STAGE_CREATE_INFO;
vertShaderStageInfo.stage = VK_SHADER_STAGE_VERTEX_BIT;
vertShaderStageInfo.module = vertShaderModule;
vertShaderStageInfo.pName = "main";
VkPipelineShaderStageCreateInfo fragShaderStageInfo {};
fragShaderStageInfo.sType = VK_STRUCTURE_TYPE_PIPELINE_SHADER_STAGE_CREATE_INFO;
fragShaderStageInfo.stage = VK_SHADER_STAGE_FRAGMENT_BIT;
fragShaderStageInfo.module = fragShaderModule;
fragShaderStageInfo.pName = "main";
VkPipelineShaderStageCreateInfo shaderStages[] = {vertShaderStageInfo, fragShaderStageInfo};
auto bindingDescription = Vertex::getBindingDescription();
auto attributeDescriptions = Vertex::getAttributeDescriptions();
VkPipelineVertexInputStateCreateInfo vertexInputInfo {};
vertexInputInfo.sType = VK_STRUCTURE_TYPE_PIPELINE_VERTEX_INPUT_STATE_CREATE_INFO;
vertexInputInfo.vertexBindingDescriptionCount = 1;
vertexInputInfo.pVertexBindingDescriptions = &bindingDescription;
vertexInputInfo.vertexAttributeDescriptionCount = attributeDescriptions.size();
vertexInputInfo.pVertexAttributeDescriptions = attributeDescriptions.data();
VkPipelineInputAssemblyStateCreateInfo inputAssembly {};
inputAssembly.sType = VK_STRUCTURE_TYPE_PIPELINE_INPUT_ASSEMBLY_STATE_CREATE_INFO;
inputAssembly.topology = VK_PRIMITIVE_TOPOLOGY_TRIANGLE_LIST;
inputAssembly.primitiveRestartEnable = VK_FALSE;
std::vector<VkDynamicState> dynamicStates = {
VK_DYNAMIC_STATE_VIEWPORT,
VK_DYNAMIC_STATE_SCISSOR
};
VkPipelineDynamicStateCreateInfo dynamicState {};
dynamicState.sType = VK_STRUCTURE_TYPE_PIPELINE_DYNAMIC_STATE_CREATE_INFO;
dynamicState.dynamicStateCount = dynamicStates.size();
dynamicState.pDynamicStates = dynamicStates.data();
VkPipelineViewportStateCreateInfo viewportState {};
viewportState.sType = VK_STRUCTURE_TYPE_PIPELINE_VIEWPORT_STATE_CREATE_INFO;
viewportState.viewportCount = 1;
viewportState.scissorCount = 1;
VkPipelineRasterizationStateCreateInfo rasterizer {};
rasterizer.sType = VK_STRUCTURE_TYPE_PIPELINE_RASTERIZATION_STATE_CREATE_INFO;
rasterizer.depthClampEnable = VK_FALSE;
rasterizer.rasterizerDiscardEnable = VK_FALSE;
rasterizer.polygonMode = VK_POLYGON_MODE_FILL;
rasterizer.lineWidth = 1;
rasterizer.cullMode = VK_CULL_MODE_BACK_BIT;
rasterizer.frontFace = VK_FRONT_FACE_CLOCKWISE;
rasterizer.depthBiasClamp = VK_FALSE;
VkPipelineMultisampleStateCreateInfo multisample {};
multisample.sType = VK_STRUCTURE_TYPE_PIPELINE_MULTISAMPLE_STATE_CREATE_INFO;
multisample.sampleShadingEnable = VK_FALSE;
multisample.rasterizationSamples = VK_SAMPLE_COUNT_1_BIT;
VkPipelineColorBlendAttachmentState colorBlendAttachment {};
colorBlendAttachment.colorWriteMask = VK_COLOR_COMPONENT_R_BIT | VK_COLOR_COMPONENT_G_BIT | VK_COLOR_COMPONENT_B_BIT | VK_COLOR_COMPONENT_A_BIT;
colorBlendAttachment.blendEnable = VK_FALSE;
VkPipelineColorBlendStateCreateInfo colorBlending {};
colorBlending.sType = VK_STRUCTURE_TYPE_PIPELINE_COLOR_BLEND_STATE_CREATE_INFO;
colorBlending.logicOpEnable = VK_FALSE;
colorBlending.attachmentCount = 1;
colorBlending.pAttachments = &colorBlendAttachment;
VkPipelineLayoutCreateInfo pipelineLayoutInfo {};
pipelineLayoutInfo.sType = VK_STRUCTURE_TYPE_PIPELINE_LAYOUT_CREATE_INFO;
vkCreatePipelineLayout(instance->device, &pipelineLayoutInfo, nullptr, &pipelineLayout);
VkGraphicsPipelineCreateInfo pipelineInfo {};
{
pipelineInfo.sType = VK_STRUCTURE_TYPE_GRAPHICS_PIPELINE_CREATE_INFO;
pipelineInfo.stageCount = 2;
pipelineInfo.pStages = shaderStages;
pipelineInfo.pVertexInputState = &vertexInputInfo;
pipelineInfo.pInputAssemblyState = &inputAssembly;
pipelineInfo.pViewportState = &viewportState;
pipelineInfo.pRasterizationState = &rasterizer;
pipelineInfo.pMultisampleState = &multisample;
pipelineInfo.pColorBlendState = &colorBlending;
pipelineInfo.pDynamicState = &dynamicState;
pipelineInfo.layout = pipelineLayout;
pipelineInfo.renderPass = renderPass;
pipelineInfo.subpass = 0;
}
vkCreateGraphicsPipelines(instance->device, VK_NULL_HANDLE, 1, &pipelineInfo, nullptr, &graphicsPipeline);
vkDestroyShaderModule(instance->device, vertShaderModule, nullptr);
vkDestroyShaderModule(instance->device, fragShaderModule, nullptr);
}
VkShaderModule Pipeline::createShaderModule(const std::vector<char> &code) {
VkShaderModuleCreateInfo createInfo {};
createInfo.sType = VK_STRUCTURE_TYPE_SHADER_MODULE_CREATE_INFO;
createInfo.codeSize = code.size();
createInfo.pCode = reinterpret_cast<const uint32_t *>(code.data());
VkShaderModule shaderModule;
vkCreateShaderModule(instance->device, &createInfo, nullptr, &shaderModule);
return shaderModule;
}
Pipeline::~Pipeline() {
vkDestroyPipeline(instance->device, graphicsPipeline, nullptr);
vkDestroyPipelineLayout(instance->device, pipelineLayout, nullptr);
}

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src/vulkan/pipeline.hpp
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#pragma once
#include <vulkan/vulkan.h>
#include "instance.hpp"
class Pipeline {
public:
explicit Pipeline(Instance* instance, VkRenderPass renderPass);
~Pipeline();
VkPipeline graphicsPipeline = VK_NULL_HANDLE;
private:
VkShaderModule createShaderModule(const std::vector<char> &code);
VkPipelineLayout pipelineLayout = VK_NULL_HANDLE;
Instance* instance = nullptr;
};

215
src/vulkan/swapchain.cpp
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#include <limits>
#include <stdexcept>
#include "swapchain.hpp"
SwapchainSupportDetails querySwapchainSupport(VkPhysicalDevice device, VkSurfaceKHR surface){
SwapchainSupportDetails details;
vkGetPhysicalDeviceSurfaceCapabilitiesKHR(device, surface, &details.capabilities);
uint32_t formatCount;
vkGetPhysicalDeviceSurfaceFormatsKHR(device, surface, &formatCount, nullptr);
if (formatCount != 0){
details.formats.resize(formatCount);
vkGetPhysicalDeviceSurfaceFormatsKHR(device, surface, &formatCount, details.formats.data());
}
uint32_t presentModeCount;
vkGetPhysicalDeviceSurfacePresentModesKHR(device, surface, &presentModeCount, nullptr);
if (presentModeCount != 0){
details.presentModes.resize(presentModeCount);
vkGetPhysicalDeviceSurfacePresentModesKHR(device, surface, &presentModeCount, details.presentModes.data());
}
return details;
}
Swapchain::Swapchain(Instance* instance)
: instance(instance) {
createSwapchain();
createImageViews();
createRenderpass();
createFramebuffers();
}
Swapchain::~Swapchain() {
cleanupSwapchain();
vkDestroyRenderPass(instance->device, renderPass, nullptr);
}
VkExtent2D Swapchain::chooseSwapExtent(const VkSurfaceCapabilitiesKHR &capabilities) {
if (capabilities.currentExtent.width != std::numeric_limits<uint32_t>::max()){
return capabilities.currentExtent;
} else {
int width, height;
glfwGetFramebufferSize(instance->window, &width, &height);
VkExtent2D actualExtent = {
static_cast<uint32_t>(width),
static_cast<uint32_t>(height)
};
actualExtent.width = std::clamp(actualExtent.width, capabilities.minImageExtent.width, capabilities.maxImageExtent.width);
actualExtent.height = std::clamp(actualExtent.height, capabilities.minImageExtent.height, capabilities.maxImageExtent.height);
return actualExtent;
}
}
void Swapchain::createSwapchain() {
SwapchainSupportDetails swapchainSupport = querySwapchainSupport(instance->physicalDevice, instance->surface);
VkSurfaceFormatKHR surfaceFormat = chooseSwapSurfaceFormat(swapchainSupport.formats);
VkPresentModeKHR presentMode = chooseSwapPresentMode(swapchainSupport.presentModes);
extent = chooseSwapExtent(swapchainSupport.capabilities);
uint32_t imageCount = swapchainSupport.capabilities.minImageCount + 1;
if (swapchainSupport.capabilities.maxImageCount > 0 && imageCount > swapchainSupport.capabilities.maxImageCount){
imageCount = swapchainSupport.capabilities.maxImageCount;
}
VkSwapchainCreateInfoKHR createInfo {};
createInfo.sType = VK_STRUCTURE_TYPE_SWAPCHAIN_CREATE_INFO_KHR;
createInfo.surface = instance->surface;
createInfo.minImageCount = imageCount;
createInfo.imageFormat = surfaceFormat.format;
createInfo.imageColorSpace = surfaceFormat.colorSpace;
createInfo.imageExtent = extent;
createInfo.imageArrayLayers = 1;
createInfo.imageUsage = VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT;
Instance::QueueFamilyIndices indices = Instance::findQueueFamilies(instance->physicalDevice, instance->surface);
uint32_t queueFamilyIndices[] = {indices.graphicsFamily.value(), indices.presentFamily.value()};
if (indices.graphicsFamily != indices.presentFamily){
createInfo.imageSharingMode = VK_SHARING_MODE_CONCURRENT;
createInfo.queueFamilyIndexCount = 2;
createInfo.pQueueFamilyIndices = queueFamilyIndices;
} else {
createInfo.imageSharingMode = VK_SHARING_MODE_EXCLUSIVE;
}
createInfo.preTransform = swapchainSupport.capabilities.currentTransform;
createInfo.compositeAlpha = VK_COMPOSITE_ALPHA_OPAQUE_BIT_KHR;
createInfo.presentMode = presentMode;
createInfo.clipped = VK_TRUE;
createInfo.oldSwapchain = VK_NULL_HANDLE;
vkCreateSwapchainKHR(instance->device, &createInfo, nullptr, &handle);
vkGetSwapchainImagesKHR(instance->device, handle, &imageCount, nullptr);
images.resize(imageCount);
vkGetSwapchainImagesKHR(instance->device, handle, &imageCount, images.data());
imageFormat = surfaceFormat.format;
}
void Swapchain::cleanupSwapchain() {
for (auto framebuffer : frameBuffers){
vkDestroyFramebuffer(instance->device, framebuffer, nullptr);
}
for (auto imageView : imageViews){
vkDestroyImageView(instance->device, imageView, nullptr);
}
vkDestroySwapchainKHR(instance->device, handle, nullptr);
}
void Swapchain::recreateSwapchain() {
vkDeviceWaitIdle(instance->device);
cleanupSwapchain();
createSwapchain();
createImageViews();
createFramebuffers();
}
void Swapchain::createImageViews() {
imageViews.resize(images.size());
for (size_t i = 0; i < images.size(); i++){
VkImageViewCreateInfo createInfo {};
createInfo.sType = VK_STRUCTURE_TYPE_IMAGE_VIEW_CREATE_INFO;
createInfo.format = imageFormat;
createInfo.viewType = VK_IMAGE_VIEW_TYPE_2D;
createInfo.image = images[i];
createInfo.components = {
VK_COMPONENT_SWIZZLE_IDENTITY,
VK_COMPONENT_SWIZZLE_IDENTITY,
VK_COMPONENT_SWIZZLE_IDENTITY,
VK_COMPONENT_SWIZZLE_IDENTITY,
};
createInfo.subresourceRange = {VK_IMAGE_ASPECT_COLOR_BIT, 0, 1, 0, 1};
vkCreateImageView(instance->device, &createInfo, nullptr, &imageViews[i]);
}
}
void Swapchain::createFramebuffers() {
frameBuffers.resize(imageViews.size());
for (size_t i = 0; i < imageViews.size(); i++){
VkImageView attachments[] = {imageViews[i]};
VkFramebufferCreateInfo framebufferInfo {};
framebufferInfo.sType = VK_STRUCTURE_TYPE_FRAMEBUFFER_CREATE_INFO;
framebufferInfo.renderPass = renderPass;
framebufferInfo.attachmentCount = 1;
framebufferInfo.pAttachments = attachments;
framebufferInfo.width = extent.width;
framebufferInfo.height = extent.height;
framebufferInfo.layers = 1;
vkCreateFramebuffer(instance->device, &framebufferInfo, nullptr, &frameBuffers[i]);
}
}
VkSurfaceFormatKHR Swapchain::chooseSwapSurfaceFormat(const std::vector<VkSurfaceFormatKHR> &availableFormats) {
for (const auto& availableFormat : availableFormats){
if (availableFormat.format == VK_FORMAT_B8G8R8A8_SRGB && availableFormat.colorSpace == VK_COLOR_SPACE_SRGB_NONLINEAR_KHR){
return availableFormat;
}
}
return availableFormats[0];
}
VkPresentModeKHR Swapchain::chooseSwapPresentMode(const std::vector<VkPresentModeKHR> &availablePresentModes) {
return VK_PRESENT_MODE_FIFO_KHR;
}
void Swapchain::createRenderpass() {
VkAttachmentDescription colorAttachment {};
colorAttachment.format = imageFormat;
colorAttachment.samples = VK_SAMPLE_COUNT_1_BIT;
colorAttachment.loadOp = VK_ATTACHMENT_LOAD_OP_CLEAR;
colorAttachment.storeOp = VK_ATTACHMENT_STORE_OP_STORE;
colorAttachment.stencilLoadOp = VK_ATTACHMENT_LOAD_OP_DONT_CARE;
colorAttachment.stencilStoreOp = VK_ATTACHMENT_STORE_OP_DONT_CARE;
colorAttachment.initialLayout = VK_IMAGE_LAYOUT_UNDEFINED;
colorAttachment.finalLayout = VK_IMAGE_LAYOUT_PRESENT_SRC_KHR;
VkAttachmentReference colorAttachmentRef {};
colorAttachmentRef.attachment = 0;
colorAttachmentRef.layout = VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL;
VkSubpassDescription subpass {};
subpass.pipelineBindPoint = VK_PIPELINE_BIND_POINT_GRAPHICS;
subpass.colorAttachmentCount = 1;
subpass.pColorAttachments = &colorAttachmentRef;
VkSubpassDependency dependency {};
dependency.srcSubpass = VK_SUBPASS_EXTERNAL;
dependency.dstSubpass = 0;
dependency.srcStageMask = VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT;
dependency.srcAccessMask = 0;
dependency.dstStageMask = VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT;
dependency.dstAccessMask = VK_ACCESS_COLOR_ATTACHMENT_WRITE_BIT;
VkRenderPassCreateInfo renderPassInfo {};
renderPassInfo.sType = VK_STRUCTURE_TYPE_RENDER_PASS_CREATE_INFO;
renderPassInfo.attachmentCount = 1;
renderPassInfo.pAttachments = &colorAttachment;
renderPassInfo.subpassCount = 1;
renderPassInfo.pSubpasses = &subpass;
renderPassInfo.dependencyCount = 1;
renderPassInfo.pDependencies = &dependency;
vkCreateRenderPass(instance->device, &renderPassInfo, nullptr, &renderPass);
}

45
src/vulkan/swapchain.hpp
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#pragma once
#include <vulkan/vulkan.h>
#include <vector>
#include "instance.hpp"
struct SwapchainSupportDetails {
VkSurfaceCapabilitiesKHR capabilities {};
std::vector<VkSurfaceFormatKHR> formats {};
std::vector<VkPresentModeKHR> presentModes {};
};
SwapchainSupportDetails querySwapchainSupport(VkPhysicalDevice device, VkSurfaceKHR surface);
class Swapchain {
public:
explicit Swapchain(Instance* instance);
~Swapchain();
void recreateSwapchain();
void cleanupSwapchain();
VkRenderPass renderPass = VK_NULL_HANDLE;
VkExtent2D extent {};
std::vector<VkFramebuffer> frameBuffers;
VkSwapchainKHR handle = VK_NULL_HANDLE;
private:
Instance* instance = nullptr;
std::vector<VkImage> images;
VkFormat imageFormat {};
void createRenderpass();
void createFramebuffers();
static VkSurfaceFormatKHR chooseSwapSurfaceFormat(const std::vector<VkSurfaceFormatKHR>& availableFormats);
static VkPresentModeKHR chooseSwapPresentMode(const std::vector<VkPresentModeKHR>& availablePresentModes);
VkExtent2D chooseSwapExtent(const VkSurfaceCapabilitiesKHR& capabilities);
void createSwapchain();
std::vector<VkImageView> imageViews;
void createImageViews();
};

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src/vulkan/vertex.cpp
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#include "vertex.hpp"

34
src/vulkan/vertex.hpp
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#pragma once
#include <glm/glm.hpp>
#include <vulkan/vulkan.h>
#include <array>
struct Vertex {
glm::vec2 pos;
glm::vec3 color;
static VkVertexInputBindingDescription getBindingDescription(){
VkVertexInputBindingDescription bindingDescription {};
bindingDescription.binding = 0;
bindingDescription.stride = sizeof(Vertex);
bindingDescription.inputRate = VK_VERTEX_INPUT_RATE_VERTEX;
return bindingDescription;
}
static std::array<VkVertexInputAttributeDescription, 2> getAttributeDescriptions(){
std::array<VkVertexInputAttributeDescription, 2> attributeDescriptions {};
attributeDescriptions[0].binding = 0;
attributeDescriptions[0].location = 0;
attributeDescriptions[0].format = VK_FORMAT_R32G32_SFLOAT;
attributeDescriptions[0].offset = offsetof(Vertex, pos);
attributeDescriptions[1].binding = 0;
attributeDescriptions[1].location = 1;
attributeDescriptions[1].format = VK_FORMAT_R32G32B32_SFLOAT;
attributeDescriptions[1].offset = offsetof(Vertex, color);
return attributeDescriptions;
}
};
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