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demo.cpp
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demo.cpp
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#define GLFW_INCLUDE_VULKAN
#include <GLFW/glfw3.h>
#include <algorithm>
#include <cstring>
#include <fstream>
#include <iostream>
#include <limits>
#include <set>
#include <stdexcept>
#include <vector>
#include "demoshaders/overlay.frag.h"
#include "demoshaders/overlay.vert.h"
#include "demoshaders/triangle.frag.h"
#include "demoshaders/triangle.vert.h"
#include "overlay.h"
const int WIDTH = 800;
const int HEIGHT = 600;
const std::vector<const char *> validationLayers = {
"VK_LAYER_KHRONOS_validation"};
const std::vector<const char *> deviceExtensions = {
VK_KHR_SWAPCHAIN_EXTENSION_NAME};
#ifdef NDEBUG
const bool enableValidationLayers = false;
#else
const bool enableValidationLayers = true;
#endif
VkResult CreateDebugReportCallbackEXT(
VkInstance instance, const VkDebugReportCallbackCreateInfoEXT *pCreateInfo,
const VkAllocationCallbacks *pAllocator,
VkDebugReportCallbackEXT *pCallback) {
auto func = (PFN_vkCreateDebugReportCallbackEXT)vkGetInstanceProcAddr(
instance, "vkCreateDebugReportCallbackEXT");
if (func != nullptr) {
return func(instance, pCreateInfo, pAllocator, pCallback);
} else {
return VK_ERROR_EXTENSION_NOT_PRESENT;
}
}
void DestroyDebugReportCallbackEXT(VkInstance instance,
VkDebugReportCallbackEXT callback,
const VkAllocationCallbacks *pAllocator) {
auto func = (PFN_vkDestroyDebugReportCallbackEXT)vkGetInstanceProcAddr(
instance, "vkDestroyDebugReportCallbackEXT");
if (func != nullptr) {
func(instance, callback, pAllocator);
}
}
struct QueueFamilyIndices {
int graphicsFamily = -1;
int presentFamily = -1;
bool isComplete() { return graphicsFamily >= 0 && presentFamily >= 0; }
};
struct SwapChainSupportDetails {
VkSurfaceCapabilitiesKHR capabilities;
std::vector<VkSurfaceFormatKHR> formats;
std::vector<VkPresentModeKHR> presentModes;
};
class HelloTriangleApplication {
public:
HelloTriangleApplication() : settings{{0.0f, 0.0f, 0.0f, 1.0f}, UP, 20} {}
void run() {
initWindow();
initVulkan();
mainLoop();
cleanup();
}
private:
GLFWwindow *window;
VkInstance instance;
VkDebugReportCallbackEXT callback;
VkSurfaceKHR surface;
VkPhysicalDevice physicalDevice = VK_NULL_HANDLE;
VkDevice device;
VkQueue graphicsQueue;
VkQueue presentQueue;
VkSwapchainKHR swapChain;
std::vector<VkImage> swapChainImages;
VkFormat swapChainImageFormat;
VkExtent2D swapChainExtent;
std::vector<VkImageView> swapChainImageViews;
std::vector<VkFramebuffer> swapChainFramebuffers;
std::vector<VkImage> overlayImages;
std::vector<VkImageView> overlayImageViews;
std::vector<VkDeviceMemory> overlayImageMemories;
VkRenderPass renderPass;
VkPipelineLayout trianglePipelineLayout;
VkPipeline triangleGraphicsPipeline;
VkPipelineLayout overlayPipelineLayout;
VkPipeline overlayGraphicsPipeline;
VkDescriptorPool descriptorPool;
VkDescriptorSetLayout descriptorSetLayout;
std::vector<VkDescriptorSet> descriptorSets;
VkCommandPool commandPool;
std::vector<VkCommandBuffer> commandBuffers;
VkSemaphore imageAvailableSemaphore;
VkSemaphore renderFinishedSemaphore;
overlay_settings settings;
void initWindow() {
glfwInit();
glfwWindowHint(GLFW_CLIENT_API, GLFW_NO_API);
window = glfwCreateWindow(WIDTH, HEIGHT, "Vulkan", nullptr, nullptr);
glfwSetWindowUserPointer(window, this);
glfwSetWindowSizeCallback(window,
HelloTriangleApplication::onWindowResized);
}
void initVulkan() {
createInstance();
setupDebugCallback();
createSurface();
pickPhysicalDevice();
createLogicalDevice();
createSwapChain();
createSwapChainImageViews();
createOverlayImages();
createOverlayImageViews();
createRenderPass();
createFramebuffers();
createDescriptorSetLayout();
createDescriptorPool();
createDescriptorSets();
createTriangleGraphicsPipeline();
createOverlayGraphicsPipeline();
createCommandPool();
createCommandBuffers();
createSemaphores();
QueueFamilyIndices queueFamilyIndices = findQueueFamilies(physicalDevice);
init_overlay(
window, device, physicalDevice, queueFamilyIndices.graphicsFamily,
graphicsQueue, overlayImageViews.data(), overlayImageViews.size(),
swapChainExtent.width, swapChainExtent.height, swapChainImageFormat);
}
void mainLoop() {
while (!glfwWindowShouldClose(window)) {
glfwPollEvents();
drawFrame();
}
vkDeviceWaitIdle(device);
}
void cleanupSwapChain() {
vkDestroyDescriptorPool(device, descriptorPool, nullptr);
for (size_t i = 0; i < swapChainFramebuffers.size(); i++) {
vkDestroyFramebuffer(device, swapChainFramebuffers[i], nullptr);
}
vkFreeCommandBuffers(device, commandPool,
static_cast<uint32_t>(commandBuffers.size()),
commandBuffers.data());
vkDestroyPipeline(device, triangleGraphicsPipeline, nullptr);
vkDestroyPipelineLayout(device, trianglePipelineLayout, nullptr);
vkDestroyPipeline(device, overlayGraphicsPipeline, nullptr);
vkDestroyPipelineLayout(device, overlayPipelineLayout, nullptr);
vkDestroyRenderPass(device, renderPass, nullptr);
for (size_t i = 0; i < overlayImageViews.size(); i++) {
vkDestroyImageView(device, overlayImageViews[i], nullptr);
}
for (size_t i = 0; i < overlayImages.size(); i++) {
vkDestroyImage(device, overlayImages[i], nullptr);
}
for (size_t i = 0; i < overlayImageMemories.size(); i++) {
vkFreeMemory(device, overlayImageMemories[i], nullptr);
}
for (size_t i = 0; i < swapChainImageViews.size(); i++) {
vkDestroyImageView(device, swapChainImageViews[i], nullptr);
}
vkDestroySwapchainKHR(device, swapChain, nullptr);
}
void cleanup() {
shutdown_overlay();
cleanupSwapChain();
vkDestroyDescriptorSetLayout(device, descriptorSetLayout, nullptr);
vkDestroySemaphore(device, renderFinishedSemaphore, nullptr);
vkDestroySemaphore(device, imageAvailableSemaphore, nullptr);
vkDestroyCommandPool(device, commandPool, nullptr);
vkDestroyDevice(device, nullptr);
DestroyDebugReportCallbackEXT(instance, callback, nullptr);
vkDestroySurfaceKHR(instance, surface, nullptr);
vkDestroyInstance(instance, nullptr);
glfwDestroyWindow(window);
glfwTerminate();
}
static void onWindowResized(GLFWwindow *window, int width, int height) {
if (width == 0 || height == 0)
return;
HelloTriangleApplication *app =
reinterpret_cast<HelloTriangleApplication *>(
glfwGetWindowUserPointer(window));
app->recreateSwapChain();
}
void recreateSwapChain() {
vkDeviceWaitIdle(device);
cleanupSwapChain();
createSwapChain();
createSwapChainImageViews();
createOverlayImages();
createOverlayImageViews();
createRenderPass();
createTriangleGraphicsPipeline();
createOverlayGraphicsPipeline();
createFramebuffers();
createDescriptorPool();
createDescriptorSets();
createCommandBuffers();
resize_overlay(swapChainExtent.width, swapChainExtent.height);
}
void createInstance() {
if (enableValidationLayers && !checkValidationLayerSupport()) {
throw std::runtime_error(
"validation layers requested, but not available!");
}
VkApplicationInfo appInfo = {};
appInfo.sType = VK_STRUCTURE_TYPE_APPLICATION_INFO;
appInfo.pApplicationName = "Hello Triangle";
appInfo.applicationVersion = VK_MAKE_VERSION(1, 0, 0);
appInfo.pEngineName = "No Engine";
appInfo.engineVersion = VK_MAKE_VERSION(1, 0, 0);
appInfo.apiVersion = VK_API_VERSION_1_0;
VkInstanceCreateInfo createInfo = {};
createInfo.sType = VK_STRUCTURE_TYPE_INSTANCE_CREATE_INFO;
createInfo.pApplicationInfo = &appInfo;
auto extensions = getRequiredExtensions();
createInfo.enabledExtensionCount = static_cast<uint32_t>(extensions.size());
createInfo.ppEnabledExtensionNames = extensions.data();
if (enableValidationLayers) {
createInfo.enabledLayerCount =
static_cast<uint32_t>(validationLayers.size());
createInfo.ppEnabledLayerNames = validationLayers.data();
} else {
createInfo.enabledLayerCount = 0;
}
if (vkCreateInstance(&createInfo, nullptr, &instance) != VK_SUCCESS) {
throw std::runtime_error("failed to create instance!");
}
}
void setupDebugCallback() {
if (!enableValidationLayers)
return;
VkDebugReportCallbackCreateInfoEXT createInfo = {};
createInfo.sType = VK_STRUCTURE_TYPE_DEBUG_REPORT_CALLBACK_CREATE_INFO_EXT;
createInfo.flags =
VK_DEBUG_REPORT_ERROR_BIT_EXT | VK_DEBUG_REPORT_WARNING_BIT_EXT;
createInfo.pfnCallback = debugCallback;
if (CreateDebugReportCallbackEXT(instance, &createInfo, nullptr,
&callback) != VK_SUCCESS) {
throw std::runtime_error("failed to set up debug callback!");
}
}
void createSurface() {
if (glfwCreateWindowSurface(instance, window, nullptr, &surface) !=
VK_SUCCESS) {
throw std::runtime_error("failed to create window surface!");
}
}
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 auto &device : devices) {
if (isDeviceSuitable(device)) {
physicalDevice = device;
break;
}
}
if (physicalDevice == VK_NULL_HANDLE) {
throw std::runtime_error("failed to find a suitable GPU!");
}
}
void createLogicalDevice() {
QueueFamilyIndices indices = findQueueFamilies(physicalDevice);
std::vector<VkDeviceQueueCreateInfo> queueCreateInfos;
std::set<int> uniqueQueueFamilies = {indices.graphicsFamily,
indices.presentFamily};
float queuePriority = 1.0f;
for (int queueFamily : 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.queueCreateInfoCount =
static_cast<uint32_t>(queueCreateInfos.size());
createInfo.pQueueCreateInfos = queueCreateInfos.data();
createInfo.pEnabledFeatures = &deviceFeatures;
createInfo.enabledExtensionCount =
static_cast<uint32_t>(deviceExtensions.size());
createInfo.ppEnabledExtensionNames = deviceExtensions.data();
if (enableValidationLayers) {
createInfo.enabledLayerCount =
static_cast<uint32_t>(validationLayers.size());
createInfo.ppEnabledLayerNames = validationLayers.data();
} else {
createInfo.enabledLayerCount = 0;
}
if (vkCreateDevice(physicalDevice, &createInfo, nullptr, &device) !=
VK_SUCCESS) {
throw std::runtime_error("failed to create logical device!");
}
vkGetDeviceQueue(device, indices.graphicsFamily, 0, &graphicsQueue);
vkGetDeviceQueue(device, indices.presentFamily, 0, &presentQueue);
}
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[] = {(uint32_t)indices.graphicsFamily,
(uint32_t)indices.presentFamily};
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;
if (vkCreateSwapchainKHR(device, &createInfo, nullptr, &swapChain) !=
VK_SUCCESS) {
throw std::runtime_error("failed to create swap chain!");
}
vkGetSwapchainImagesKHR(device, swapChain, &imageCount, nullptr);
swapChainImages.resize(imageCount);
vkGetSwapchainImagesKHR(device, swapChain, &imageCount,
swapChainImages.data());
swapChainImageFormat = surfaceFormat.format;
swapChainExtent = extent;
}
void createSwapChainImageViews() {
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.image = swapChainImages[i];
createInfo.viewType = VK_IMAGE_VIEW_TYPE_2D;
createInfo.format = swapChainImageFormat;
createInfo.components.r = VK_COMPONENT_SWIZZLE_IDENTITY;
createInfo.components.g = VK_COMPONENT_SWIZZLE_IDENTITY;
createInfo.components.b = VK_COMPONENT_SWIZZLE_IDENTITY;
createInfo.components.a = VK_COMPONENT_SWIZZLE_IDENTITY;
createInfo.subresourceRange.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT;
createInfo.subresourceRange.baseMipLevel = 0;
createInfo.subresourceRange.levelCount = 1;
createInfo.subresourceRange.baseArrayLayer = 0;
createInfo.subresourceRange.layerCount = 1;
if (vkCreateImageView(device, &createInfo, nullptr,
&swapChainImageViews[i]) != VK_SUCCESS) {
throw std::runtime_error("failed to create image views!");
}
}
}
void createOverlayImages() {
overlayImages.resize(swapChainImages.size());
overlayImageMemories.resize(swapChainImages.size());
for (size_t i = 0; i < overlayImages.size(); i++) {
VkImageCreateInfo imageInfo = {};
imageInfo.sType = VK_STRUCTURE_TYPE_IMAGE_CREATE_INFO;
imageInfo.imageType = VK_IMAGE_TYPE_2D;
imageInfo.extent.width = swapChainExtent.width;
imageInfo.extent.height = swapChainExtent.height;
imageInfo.extent.depth = 1;
imageInfo.mipLevels = 1;
imageInfo.arrayLayers = 1;
imageInfo.format = swapChainImageFormat;
imageInfo.tiling = VK_IMAGE_TILING_OPTIMAL;
imageInfo.initialLayout = VK_IMAGE_LAYOUT_UNDEFINED;
imageInfo.usage = VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT |
VK_IMAGE_USAGE_INPUT_ATTACHMENT_BIT;
imageInfo.samples = VK_SAMPLE_COUNT_1_BIT;
imageInfo.sharingMode = VK_SHARING_MODE_EXCLUSIVE;
if (vkCreateImage(device, &imageInfo, nullptr, &overlayImages[i]) !=
VK_SUCCESS) {
throw std::runtime_error("failed to create image!");
}
VkMemoryRequirements memRequirements;
vkGetImageMemoryRequirements(device, overlayImages[i], &memRequirements);
VkMemoryAllocateInfo allocInfo = {};
allocInfo.sType = VK_STRUCTURE_TYPE_MEMORY_ALLOCATE_INFO;
allocInfo.allocationSize = memRequirements.size;
VkPhysicalDeviceMemoryProperties memProperties;
vkGetPhysicalDeviceMemoryProperties(physicalDevice, &memProperties);
VkMemoryPropertyFlags properties;
bool found = false;
uint32_t j;
for (j = 0; j < memProperties.memoryTypeCount; j++) {
if ((memRequirements.memoryTypeBits & (1 << j)) &&
(memProperties.memoryTypes[j].propertyFlags &
VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT) ==
VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT) {
found = true;
break;
}
}
if (!found) {
throw std::runtime_error("failed to find suitable memory type!");
}
allocInfo.memoryTypeIndex = j;
if (vkAllocateMemory(device, &allocInfo, nullptr,
&overlayImageMemories[i]) != VK_SUCCESS) {
throw std::runtime_error("failed to allocate image memory!");
}
vkBindImageMemory(device, overlayImages[i], overlayImageMemories[i], 0);
}
}
void createOverlayImageViews() {
overlayImageViews.resize(swapChainImages.size());
for (size_t i = 0; i < overlayImageViews.size(); i++) {
VkImageViewCreateInfo createInfo = {};
createInfo.sType = VK_STRUCTURE_TYPE_IMAGE_VIEW_CREATE_INFO;
createInfo.image = overlayImages[i];
createInfo.viewType = VK_IMAGE_VIEW_TYPE_2D;
createInfo.format = swapChainImageFormat;
createInfo.components.r = VK_COMPONENT_SWIZZLE_IDENTITY;
createInfo.components.g = VK_COMPONENT_SWIZZLE_IDENTITY;
createInfo.components.b = VK_COMPONENT_SWIZZLE_IDENTITY;
createInfo.components.a = VK_COMPONENT_SWIZZLE_IDENTITY;
createInfo.subresourceRange.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT;
createInfo.subresourceRange.baseMipLevel = 0;
createInfo.subresourceRange.levelCount = 1;
createInfo.subresourceRange.baseArrayLayer = 0;
createInfo.subresourceRange.layerCount = 1;
if (vkCreateImageView(device, &createInfo, nullptr,
&overlayImageViews[i]) != VK_SUCCESS) {
throw std::runtime_error("failed to create image views!");
}
}
}
void createRenderPass() {
VkAttachmentDescription attachments[2] = {};
attachments[0].format = swapChainImageFormat;
attachments[0].samples = VK_SAMPLE_COUNT_1_BIT;
attachments[0].loadOp = VK_ATTACHMENT_LOAD_OP_CLEAR;
attachments[0].storeOp = VK_ATTACHMENT_STORE_OP_STORE;
attachments[0].stencilLoadOp = VK_ATTACHMENT_LOAD_OP_DONT_CARE;
attachments[0].stencilStoreOp = VK_ATTACHMENT_STORE_OP_DONT_CARE;
attachments[0].initialLayout = VK_IMAGE_LAYOUT_UNDEFINED;
attachments[0].finalLayout = VK_IMAGE_LAYOUT_PRESENT_SRC_KHR;
attachments[1].format = swapChainImageFormat;
attachments[1].samples = VK_SAMPLE_COUNT_1_BIT;
attachments[1].loadOp = VK_ATTACHMENT_LOAD_OP_LOAD;
attachments[1].storeOp = VK_ATTACHMENT_STORE_OP_STORE;
attachments[1].stencilLoadOp = VK_ATTACHMENT_LOAD_OP_DONT_CARE;
attachments[1].stencilStoreOp = VK_ATTACHMENT_STORE_OP_DONT_CARE;
attachments[1].initialLayout = VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL;
attachments[1].finalLayout = VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL;
VkAttachmentReference colorAttachmentRef = {};
colorAttachmentRef.attachment = 0;
colorAttachmentRef.layout = VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL;
VkAttachmentReference inputAttachmentRef = {};
inputAttachmentRef.attachment = 1;
inputAttachmentRef.layout = VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL;
VkSubpassDescription subpasses[2] = {};
subpasses[0].pipelineBindPoint = VK_PIPELINE_BIND_POINT_GRAPHICS;
subpasses[0].colorAttachmentCount = 1;
subpasses[0].pColorAttachments = &colorAttachmentRef;
subpasses[1].pipelineBindPoint = VK_PIPELINE_BIND_POINT_GRAPHICS;
subpasses[1].colorAttachmentCount = 1;
subpasses[1].pColorAttachments = &colorAttachmentRef;
subpasses[1].inputAttachmentCount = 1;
subpasses[1].pInputAttachments = &inputAttachmentRef;
VkSubpassDependency dependencies[2] = {};
dependencies[0].srcSubpass = VK_SUBPASS_EXTERNAL;
dependencies[0].dstSubpass = 0;
dependencies[0].srcStageMask =
VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT;
dependencies[0].srcAccessMask = 0;
dependencies[0].dstStageMask =
VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT;
dependencies[0].dstAccessMask = VK_ACCESS_COLOR_ATTACHMENT_READ_BIT |
VK_ACCESS_COLOR_ATTACHMENT_WRITE_BIT;
dependencies[1].srcSubpass = 0;
dependencies[1].dstSubpass = 1;
dependencies[1].srcStageMask =
VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT;
dependencies[1].srcAccessMask = 0;
dependencies[1].dstStageMask =
VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT;
dependencies[1].dstAccessMask = VK_ACCESS_COLOR_ATTACHMENT_READ_BIT |
VK_ACCESS_COLOR_ATTACHMENT_WRITE_BIT;
VkRenderPassCreateInfo renderPassInfo = {};
renderPassInfo.sType = VK_STRUCTURE_TYPE_RENDER_PASS_CREATE_INFO;
renderPassInfo.attachmentCount = 2;
renderPassInfo.pAttachments = attachments;
renderPassInfo.subpassCount = 2;
renderPassInfo.pSubpasses = subpasses;
renderPassInfo.dependencyCount = 2;
renderPassInfo.pDependencies = dependencies;
if (vkCreateRenderPass(device, &renderPassInfo, nullptr, &renderPass) !=
VK_SUCCESS) {
throw std::runtime_error("failed to create render pass!");
}
}
void createTriangleGraphicsPipeline() {
std::vector<char> vertShaderCode(
&demoshaders_triangle_vert_spv[0],
&demoshaders_triangle_vert_spv[demoshaders_triangle_vert_spv_len]);
std::vector<char> fragShaderCode(
&demoshaders_triangle_frag_spv[0],
&demoshaders_triangle_frag_spv[demoshaders_triangle_frag_spv_len]);
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};
VkPipelineVertexInputStateCreateInfo vertexInputInfo = {};
vertexInputInfo.sType =
VK_STRUCTURE_TYPE_PIPELINE_VERTEX_INPUT_STATE_CREATE_INFO;
vertexInputInfo.vertexBindingDescriptionCount = 0;
vertexInputInfo.vertexAttributeDescriptionCount = 0;
VkPipelineInputAssemblyStateCreateInfo inputAssembly = {};
inputAssembly.sType =
VK_STRUCTURE_TYPE_PIPELINE_INPUT_ASSEMBLY_STATE_CREATE_INFO;
inputAssembly.topology = VK_PRIMITIVE_TOPOLOGY_TRIANGLE_LIST;
inputAssembly.primitiveRestartEnable = VK_FALSE;
VkViewport viewport = {};
viewport.x = 0.0f;
viewport.y = 0.0f;
viewport.width = (float)swapChainExtent.width;
viewport.height = (float)swapChainExtent.height;
viewport.minDepth = 0.0f;
viewport.maxDepth = 1.0f;
VkRect2D scissor = {};
scissor.offset = {0, 0};
scissor.extent = swapChainExtent;
VkPipelineViewportStateCreateInfo viewportState = {};
viewportState.sType = VK_STRUCTURE_TYPE_PIPELINE_VIEWPORT_STATE_CREATE_INFO;
viewportState.viewportCount = 1;
viewportState.pViewports = &viewport;
viewportState.scissorCount = 1;
viewportState.pScissors = &scissor;
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 = 1.0f;
rasterizer.cullMode = VK_CULL_MODE_BACK_BIT;
rasterizer.frontFace = VK_FRONT_FACE_CLOCKWISE;
rasterizer.depthBiasEnable = VK_FALSE;
VkPipelineMultisampleStateCreateInfo multisampling = {};
multisampling.sType =
VK_STRUCTURE_TYPE_PIPELINE_MULTISAMPLE_STATE_CREATE_INFO;
multisampling.sampleShadingEnable = VK_FALSE;
multisampling.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.logicOp = VK_LOGIC_OP_COPY;
colorBlending.attachmentCount = 1;
colorBlending.pAttachments = &colorBlendAttachment;
colorBlending.blendConstants[0] = 0.0f;
colorBlending.blendConstants[1] = 0.0f;
colorBlending.blendConstants[2] = 0.0f;
colorBlending.blendConstants[3] = 0.0f;
VkPipelineLayoutCreateInfo pipelineLayoutInfo = {};
pipelineLayoutInfo.sType = VK_STRUCTURE_TYPE_PIPELINE_LAYOUT_CREATE_INFO;
pipelineLayoutInfo.setLayoutCount = 0;
pipelineLayoutInfo.pushConstantRangeCount = 0;
pipelineLayoutInfo.setLayoutCount = 1;
pipelineLayoutInfo.pSetLayouts = &descriptorSetLayout;
if (vkCreatePipelineLayout(device, &pipelineLayoutInfo, nullptr,
&trianglePipelineLayout) != VK_SUCCESS) {
throw std::runtime_error("failed to create pipeline layout!");
}
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 = &multisampling;
pipelineInfo.pColorBlendState = &colorBlending;
pipelineInfo.layout = trianglePipelineLayout;
pipelineInfo.renderPass = renderPass;
pipelineInfo.subpass = 0;
pipelineInfo.basePipelineHandle = VK_NULL_HANDLE;
if (vkCreateGraphicsPipelines(device, VK_NULL_HANDLE, 1, &pipelineInfo,
nullptr,
&triangleGraphicsPipeline) != VK_SUCCESS) {
throw std::runtime_error("failed to create graphics pipeline!");
}
vkDestroyShaderModule(device, fragShaderModule, nullptr);
vkDestroyShaderModule(device, vertShaderModule, nullptr);
}
void createOverlayGraphicsPipeline() {
std::vector<char> vertShaderCode(
&demoshaders_overlay_vert_spv[0],
&demoshaders_overlay_vert_spv[demoshaders_overlay_vert_spv_len]);
std::vector<char> fragShaderCode(
&demoshaders_overlay_frag_spv[0],
&demoshaders_overlay_frag_spv[demoshaders_overlay_frag_spv_len]);
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};
VkPipelineVertexInputStateCreateInfo vertexInputInfo = {};
vertexInputInfo.sType =
VK_STRUCTURE_TYPE_PIPELINE_VERTEX_INPUT_STATE_CREATE_INFO;
VkPipelineInputAssemblyStateCreateInfo inputAssembly = {};
inputAssembly.sType =
VK_STRUCTURE_TYPE_PIPELINE_INPUT_ASSEMBLY_STATE_CREATE_INFO;
inputAssembly.topology = VK_PRIMITIVE_TOPOLOGY_TRIANGLE_LIST;
inputAssembly.primitiveRestartEnable = VK_FALSE;
VkViewport viewport = {};
viewport.x = 0.0f;
viewport.y = 0.0f;
viewport.width = (float)swapChainExtent.width;
viewport.height = (float)swapChainExtent.height;
viewport.minDepth = 0.0f;
viewport.maxDepth = 1.0f;
VkRect2D scissor = {};
scissor.offset = {0, 0};
scissor.extent = swapChainExtent;
VkPipelineViewportStateCreateInfo viewportState = {};
viewportState.sType = VK_STRUCTURE_TYPE_PIPELINE_VIEWPORT_STATE_CREATE_INFO;
viewportState.viewportCount = 1;
viewportState.pViewports = &viewport;
viewportState.scissorCount = 1;
viewportState.pScissors = &scissor;
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 = 1.0f;
rasterizer.cullMode = VK_CULL_MODE_FRONT_BIT;
rasterizer.frontFace = VK_FRONT_FACE_COUNTER_CLOCKWISE;
rasterizer.depthBiasEnable = VK_FALSE;
VkPipelineMultisampleStateCreateInfo multisampling = {};
multisampling.sType =
VK_STRUCTURE_TYPE_PIPELINE_MULTISAMPLE_STATE_CREATE_INFO;
multisampling.sampleShadingEnable = VK_FALSE;
multisampling.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_TRUE;
colorBlendAttachment.srcColorBlendFactor =
VkBlendFactor::VK_BLEND_FACTOR_ONE;
colorBlendAttachment.dstColorBlendFactor =
VkBlendFactor::VK_BLEND_FACTOR_ONE_MINUS_SRC_ALPHA;
colorBlendAttachment.colorBlendOp = VK_BLEND_OP_ADD;
colorBlendAttachment.srcAlphaBlendFactor = VK_BLEND_FACTOR_ONE;
colorBlendAttachment.dstAlphaBlendFactor = VK_BLEND_FACTOR_ZERO;
colorBlendAttachment.alphaBlendOp = VK_BLEND_OP_ADD;
VkPipelineColorBlendStateCreateInfo colorBlending = {};
colorBlending.sType =
VK_STRUCTURE_TYPE_PIPELINE_COLOR_BLEND_STATE_CREATE_INFO;
colorBlending.logicOpEnable = VK_FALSE;
colorBlending.logicOp = VK_LOGIC_OP_COPY;
colorBlending.attachmentCount = 1;
colorBlending.pAttachments = &colorBlendAttachment;
colorBlending.blendConstants[0] = 1.0f;
colorBlending.blendConstants[1] = 1.0f;
colorBlending.blendConstants[2] = 1.0f;
colorBlending.blendConstants[3] = 1.0f;
VkPipelineLayoutCreateInfo pipelineLayoutInfo = {};
pipelineLayoutInfo.sType = VK_STRUCTURE_TYPE_PIPELINE_LAYOUT_CREATE_INFO;
pipelineLayoutInfo.setLayoutCount = 0;
pipelineLayoutInfo.pushConstantRangeCount = 0;
pipelineLayoutInfo.setLayoutCount = 1;
pipelineLayoutInfo.pSetLayouts = &descriptorSetLayout;
if (vkCreatePipelineLayout(device, &pipelineLayoutInfo, nullptr,
&overlayPipelineLayout) != VK_SUCCESS) {
throw std::runtime_error("failed to create pipeline layout!");
}
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 = &multisampling;
pipelineInfo.pColorBlendState = &colorBlending;
pipelineInfo.layout = overlayPipelineLayout;
pipelineInfo.renderPass = renderPass;
pipelineInfo.subpass = 1;
pipelineInfo.basePipelineHandle = VK_NULL_HANDLE;
if (vkCreateGraphicsPipelines(device, VK_NULL_HANDLE, 1, &pipelineInfo,
nullptr,
&overlayGraphicsPipeline) != VK_SUCCESS) {
throw std::runtime_error("failed to create graphics pipeline!");
}
vkDestroyShaderModule(device, fragShaderModule, nullptr);
vkDestroyShaderModule(device, vertShaderModule, nullptr);
}
void createFramebuffers() {
swapChainFramebuffers.resize(swapChainImageViews.size());
for (size_t i = 0; i < swapChainImageViews.size(); i++) {
VkImageView attachments[2] = {swapChainImageViews[i],
overlayImageViews[i]};
VkFramebufferCreateInfo framebufferInfo = {};
framebufferInfo.sType = VK_STRUCTURE_TYPE_FRAMEBUFFER_CREATE_INFO;
framebufferInfo.renderPass = renderPass;
framebufferInfo.attachmentCount = 2;
framebufferInfo.pAttachments = attachments;
framebufferInfo.width = swapChainExtent.width;
framebufferInfo.height = swapChainExtent.height;
framebufferInfo.layers = 1;
if (vkCreateFramebuffer(device, &framebufferInfo, nullptr,
&swapChainFramebuffers[i]) != VK_SUCCESS) {
throw std::runtime_error("failed to create framebuffer!");
}
}
}
void createCommandPool() {
QueueFamilyIndices queueFamilyIndices = findQueueFamilies(physicalDevice);
VkCommandPoolCreateInfo poolInfo = {};
poolInfo.sType = VK_STRUCTURE_TYPE_COMMAND_POOL_CREATE_INFO;
poolInfo.queueFamilyIndex = queueFamilyIndices.graphicsFamily;
if (vkCreateCommandPool(device, &poolInfo, nullptr, &commandPool) !=
VK_SUCCESS) {
throw std::runtime_error("failed to create command pool!");
}
}
void createCommandBuffers() {
commandBuffers.resize(swapChainFramebuffers.size());
VkCommandBufferAllocateInfo allocInfo = {};
allocInfo.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_ALLOCATE_INFO;
allocInfo.commandPool = commandPool;
allocInfo.level = VK_COMMAND_BUFFER_LEVEL_PRIMARY;
allocInfo.commandBufferCount = (uint32_t)commandBuffers.size();
if (vkAllocateCommandBuffers(device, &allocInfo, commandBuffers.data()) !=
VK_SUCCESS) {
throw std::runtime_error("failed to allocate command buffers!");
}
for (size_t i = 0; i < commandBuffers.size(); i++) {
VkCommandBufferBeginInfo beginInfo = {};
beginInfo.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_BEGIN_INFO;
beginInfo.flags = VK_COMMAND_BUFFER_USAGE_SIMULTANEOUS_USE_BIT;
vkBeginCommandBuffer(commandBuffers[i], &beginInfo);
VkRenderPassBeginInfo renderPassInfo = {};
renderPassInfo.sType = VK_STRUCTURE_TYPE_RENDER_PASS_BEGIN_INFO;
renderPassInfo.renderPass = renderPass;
renderPassInfo.framebuffer = swapChainFramebuffers[i];
renderPassInfo.renderArea.offset = {0, 0};
renderPassInfo.renderArea.extent = swapChainExtent;
VkClearValue clearColor = {settings.bg_color[0], settings.bg_color[1],
settings.bg_color[2], settings.bg_color[3]};
renderPassInfo.clearValueCount = 1;
renderPassInfo.pClearValues = &clearColor;
vkCmdBeginRenderPass(commandBuffers[i], &renderPassInfo,
VK_SUBPASS_CONTENTS_INLINE);
vkCmdBindPipeline(commandBuffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS,
triangleGraphicsPipeline);
vkCmdDraw(commandBuffers[i], 3, 1, 0, 0);
vkCmdNextSubpass(commandBuffers[i],
VkSubpassContents::VK_SUBPASS_CONTENTS_INLINE);
vkCmdBindPipeline(commandBuffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS,
overlayGraphicsPipeline);
vkCmdBindDescriptorSets(
commandBuffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS,
overlayPipelineLayout, 0, 1, &descriptorSets[i], 0, nullptr);
vkCmdDraw(commandBuffers[i], 3, 1, 0, 0);
vkCmdEndRenderPass(commandBuffers[i]);
if (vkEndCommandBuffer(commandBuffers[i]) != VK_SUCCESS) {
throw std::runtime_error("failed to record command buffer!");
}
}
}
void createDescriptorPool() {
VkDescriptorPoolSize poolSize = {};
poolSize.type = VK_DESCRIPTOR_TYPE_INPUT_ATTACHMENT;
poolSize.descriptorCount =
static_cast<uint32_t>(swapChainFramebuffers.size());
VkDescriptorPoolCreateInfo poolInfo = {};
poolInfo.sType = VK_STRUCTURE_TYPE_DESCRIPTOR_POOL_CREATE_INFO;
poolInfo.poolSizeCount = 1;
poolInfo.pPoolSizes = &poolSize;
poolInfo.maxSets = static_cast<uint32_t>(swapChainFramebuffers.size());
if (vkCreateDescriptorPool(device, &poolInfo, nullptr, &descriptorPool) !=
VK_SUCCESS) {