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vulkan.cpp
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vulkan.cpp
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#include <dlfcn.h>
#include <stdio.h>
#include <map>
#include <vector>
#include <algorithm>
#include <limits>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#define VK_NO_PROTOTYPES
#ifdef USE_GLFW
#define VK_USE_PLATFORM_XLIB_KHR
#define GLFW_INCLUDE_VULKAN
#define GLFW_EXPOSE_NATIVE_X11
#include <GLFW/glfw3.h>
#include <GLFW/glfw3native.h>
#elif defined(USE_XCB)
#define VK_USE_PLATFORM_XCB_KHR
#include <xcb/xcb.h>
#elif defined(USE_XLIB)
#define VK_USE_PLATFORM_XLIB_KHR
#include <X11/Xlib.h>
#endif
#include <vulkan/vulkan.h>
#include "VulkanFunctions.h"
void* VULKAN_LIBRARY;
#if defined(VK_USE_PLATFORM_WIN32_KHR)
#define LoadProcAddress GetProcAddress
#elif defined(VK_USE_PLATFORM_XCB_KHR) || defined(VK_USE_PLATFORM_XLIB_KHR)
#define LoadProcAddress dlsym
#endif
#define VK_EXPORTED_FUNCTION( fun ) \
if( !(fun = (PFN_##fun)LoadProcAddress( VULKAN_LIBRARY, #fun )) ) { \
printf("Could not load exported function: %s!\n", #fun); \
return false; \
}
//use only AFTER VK_EXPORTED_FUNCTION( vkGetInstanceProcAddr )
#define VK_LOAD_INSTANCE_FUNCTION( source, fun ) \
if (!(fun = (PFN_##fun)vkGetInstanceProcAddr( source, #fun ))) { \
printf("Could not load function: %s!\n", #fun); \
throw VulkanException("Loading func error"); \
}
//use only AFTER VK_LOAD_INSTANCE_FUNCTION( vkGetDeviceProcAddr )
#define VK_LOAD_DEVICE_FUNCTION( source, fun ) \
if (!(fun = (PFN_##fun)vkGetDeviceProcAddr( source, #fun ))) { \
printf("Could not load function: %s!\n", #fun); \
throw VulkanException("Loading func error"); \
}
#define VK_DESTROY_INSTANCE_FUNCTION ( source, obj, fun ) \
if ( obj != VK_NULL_HANDLE) { \
VK_LOAD_INSTANCE_FUNCTION(instance , fun); \
fun(source, obj, nullptr); \
}
#define VK_DESTROY_DEVICE_FUNCTION ( source, obj, fun ) \
if ( obj != VK_NULL_HANDLE) { \
VK_LOAD_DEVICE_FUNCTION(instance , fun); \
fun(source, obj, nullptr); \
}
#ifdef USE_GLFW
GLFWwindow* window;
const int WIDTH = 800;
const int HEIGHT = 600;
#elif defined(USE_XCB)
xcb_connection_t *c;
xcb_screen_t *screen;
xcb_drawable_t window;
xcb_gcontext_t foreground;
xcb_gcontext_t background;
xcb_generic_event_t *e;
uint32_t mask = 0;
uint32_t values[2];
#elif defined(USE_XLIB)
Display *display;
Window window;
XEvent e;
int s;
#endif
void create_window()
{
#ifdef USE_GLFW
glfwInit();
glfwWindowHint(GLFW_CLIENT_API, GLFW_NO_API);
glfwWindowHint(GLFW_RESIZABLE, GLFW_FALSE);
window = glfwCreateWindow(WIDTH, HEIGHT, "Vulkan", nullptr, nullptr);
#elif defined(USE_XCB)
c = xcb_connect (NULL, NULL);
screen = xcb_setup_roots_iterator (xcb_get_setup (c)).data;
window = screen->root;
window = xcb_generate_id(c);
mask = XCB_CW_BACK_PIXEL | XCB_CW_EVENT_MASK;
values[0] = screen->white_pixel;
values[1] = XCB_EVENT_MASK_EXPOSURE | XCB_EVENT_MASK_KEY_PRESS;
xcb_create_window (c, /* connection */
// XCB_COPY_FROM_PARENT, /* depth */
// window, /* window Id */
// screen->root, /* parent window */
// 0, 0, /* x, y */
// 150, 150, /* width, height */
// 10, /* border_width */
// XCB_WINDOW_CLASS_INPUT_OUTPUT, /* class */
// screen->root_visual, /* visual */
// mask, values); /* masks */
xcb_map_window(c, window);
xcb_flush(c);
#elif defined(USE_XLIB)
display = XOpenDisplay(NULL);
if (display == NULL) {
fprintf(stderr, "Cannot open display\n");
exit(1);
}
s = DefaultScreen(display);
window = XCreateSimpleWindow(display, RootWindow(display, s), 10, 10, 100, 100, 1,
BlackPixel(display, s), WhitePixel(display, s));
XSelectInput(display, window, ExposureMask | KeyPressMask);
XMapWindow(display, window);
#endif
}
static
std::map<char, std::string> vk_return_codes =
{
{0, "VK_SUCCESS"},
{1, "VK_NOT_READY"},
{2, "VK_TIMEOUT"},
{3, "VK_EVENT_SET"},
{4, "VK_EVENT_RESET"},
{5, "VK_INCOMPLETE"},
{-1, "VK_ERROR_OUT_OF_HOST_MEMORY"},
{-2, "VK_ERROR_OUT_OF_DEVICE_MEMORY"},
{-3, "VK_ERROR_INITIALIZATION_FAILED"},
{-4, "VK_ERROR_DEVICE_LOST"},
{-5, "VK_ERROR_MEMORY_MAP_FAILED"},
{-6, "VK_ERROR_LAYER_NOT_PRESENT"},
{-7, "VK_ERROR_EXTENSION_NOT_PRESENT"},
{-8, "VK_ERROR_FEATURE_NOT_PRESENT"},
{-9, "VK_ERROR_INCOMPATIBLE_DRIVER"},
{-10, "VK_ERROR_TOO_MANY_OBJECTS"},
{-11, "VK_ERROR_FORMAT_NOT_SUPPORTED"},
{-12, "VK_ERROR_FRAGMENTED_POOL"}
};
class VulkanException : std::runtime_error
{
public:
template <typename T>
explicit VulkanException(const T arg) : std::runtime_error(arg)
{}
};
void vkCheckResult(const char code)
{
if (code) {
const char* const code_str = vk_return_codes[code].c_str();
printf("Return code: %d - %s\n", code, code_str);
throw(VulkanException(code_str));
}
}
void window_main_loop(VkDevice& logical_device, VkSwapchainKHR& swapChain,
VkSemaphore& imageAvailableSemaphore,
VkSemaphore& renderFinishedSemaphore,
std::vector<VkCommandBuffer>& commandBuffers,
VkQueue& graphicsQueue,
VkQueue& presentQueue)
{
VK_LOAD_DEVICE_FUNCTION(logical_device, vkAcquireNextImageKHR)
VK_LOAD_DEVICE_FUNCTION(logical_device, vkQueueSubmit)
VK_LOAD_DEVICE_FUNCTION(logical_device, vkQueuePresentKHR)
VK_LOAD_DEVICE_FUNCTION(logical_device, vkDeviceWaitIdle)
VK_LOAD_DEVICE_FUNCTION(logical_device, vkQueueWaitIdle)
#ifdef USE_GLFW
while (!glfwWindowShouldClose(window)) {
glfwPollEvents();
vkQueueWaitIdle(presentQueue);
uint32_t imageIndex;
vkAcquireNextImageKHR(logical_device, swapChain, std::numeric_limits<uint64_t>::max(), imageAvailableSemaphore, VK_NULL_HANDLE, &imageIndex);
VkSubmitInfo submitInfo = {};
submitInfo.sType = VK_STRUCTURE_TYPE_SUBMIT_INFO;
VkSemaphore waitSemaphores[] = {imageAvailableSemaphore};
VkPipelineStageFlags waitStages[] = {VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT};
submitInfo.waitSemaphoreCount = 1;
submitInfo.pWaitSemaphores = waitSemaphores;
submitInfo.pWaitDstStageMask = waitStages;
submitInfo.commandBufferCount = 1;
submitInfo.pCommandBuffers = &commandBuffers[imageIndex];
VkSemaphore signalSemaphores[] = {renderFinishedSemaphore};
submitInfo.signalSemaphoreCount = 1;
submitInfo.pSignalSemaphores = signalSemaphores;
vkCheckResult(vkQueueSubmit(graphicsQueue, 1, &submitInfo, VK_NULL_HANDLE));
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;
presentInfo.pResults = nullptr; // Optional
vkCheckResult(vkQueuePresentKHR(presentQueue, &presentInfo));
}
vkDeviceWaitIdle(logical_device);
/*GLFW Window main termination*/
glfwDestroyWindow(window);
glfwTerminate();
#elif USE_XCB
while ((e = xcb_wait_for_event (c))) {
switch (e->response_type & ~0x80) {
case XCB_EXPOSE:
xcb_flush (c);
break;
case XCB_KEY_PRESS:
return;
}
free (e);
}
#elif defined(USE_XLIB)
while (1) {
XNextEvent(d, &e);
if (e.type == KeyPress)
break;
}
XCloseDisplay(d);
#endif
}
VkShaderModule create_vertex_module(PFN_vkCreateShaderModule vkCreateShaderModule, VkDevice& logical_device, const std::vector<char>& shader)
{
VkShaderModuleCreateInfo createInfo = {};
createInfo.sType = VK_STRUCTURE_TYPE_SHADER_MODULE_CREATE_INFO;
createInfo.codeSize = shader.size();
createInfo.pCode = reinterpret_cast<const uint32_t*>(shader.data());
createInfo.pNext = nullptr;
createInfo.flags = 0;
VkShaderModule shaderModule;
vkCheckResult(vkCreateShaderModule(logical_device, &createInfo, nullptr, &shaderModule));
return shaderModule;
}
std::vector<char> load_shader(const std::string& filename)
{
FILE* shader_file = fopen(filename.c_str(), "rb");
if (shader_file) {
struct stat info;
stat(filename.c_str(), &info);
std::vector<char> shader_data(info.st_size);
fread(shader_data.data(), info.st_size, 1, shader_file);
fclose(shader_file);
printf("\tShader (%s) has been loaded (data-size: %d)\n", filename.c_str(), info.st_size);
return shader_data;
} else {
printf("\tCouldn't open shader file: %s\n", filename.c_str());
throw std::runtime_error("Couldn't open file");
}
}
void available_layers_and_extensions()
{
printf("---Checking Vulkan-driver Layers and Extensions\n");
VK_LOAD_INSTANCE_FUNCTION(nullptr , vkEnumerateInstanceLayerProperties)
VK_LOAD_INSTANCE_FUNCTION(nullptr , vkEnumerateInstanceExtensionProperties)
uint32_t instanceLayerCount;
vkCheckResult(vkEnumerateInstanceLayerProperties(&instanceLayerCount, nullptr));
VkLayerProperties* layerProperty = new VkLayerProperties[instanceLayerCount];
vkCheckResult(vkEnumerateInstanceLayerProperties(&instanceLayerCount, layerProperty));
printf("Number of instance layers: %d\n", instanceLayerCount);
for (uint32_t i = 0; i < instanceLayerCount; ++i) {
printf("\tDetected layer: %s\n", layerProperty[i].layerName);
uint32_t layersExtensionCount;
vkCheckResult(vkEnumerateInstanceExtensionProperties(layerProperty[i].layerName, &layersExtensionCount, nullptr));
VkExtensionProperties *layerExtensions = new VkExtensionProperties[layersExtensionCount];
vkCheckResult(vkEnumerateInstanceExtensionProperties(layerProperty[i].layerName,
&layersExtensionCount, layerExtensions));
for (uint32_t j = 0; j < layersExtensionCount; ++j) {
printf("\t\tExtensions: %s\n", layerExtensions[j].extensionName);
}
}
uint32_t instanceExtensionsCount;
vkEnumerateInstanceExtensionProperties(nullptr, &instanceExtensionsCount, nullptr);
printf("Number of instance extensions: %d\n", instanceExtensionsCount);
VkExtensionProperties *instanceExtensions = new VkExtensionProperties[instanceExtensionsCount];
vkCheckResult(vkEnumerateInstanceExtensionProperties(nullptr, &instanceExtensionsCount, instanceExtensions));
for (uint32_t i = 0; i < instanceExtensionsCount; ++i) {
printf("\tDetected instance extension: %s\n", instanceExtensions[i].extensionName);
}
printf("\n");
}
VkInstance init_vulkan_instance(const std::vector<const char *> enabledLayerNames)
{
printf("---Creating vulkan instance\n");
VkInstance instance;
VkApplicationInfo appInfo = {};
appInfo.sType = VK_STRUCTURE_TYPE_APPLICATION_INFO;
appInfo.pNext = nullptr;
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 instanceInfo = {};
instanceInfo.sType = VK_STRUCTURE_TYPE_INSTANCE_CREATE_INFO;
instanceInfo.pApplicationInfo = &appInfo;
instanceInfo.pNext = nullptr;
instanceInfo.flags = 0;
//#ifdef USE_GLFW
/*Bug or featrue in glfw: glfwGetRequiredInstanceExtensions doesn't work correctly*/
// unsigned int glfwExtensionCount = 0;
// const char** glfwExtensions = glfwGetRequiredInstanceExtensions(&glfwExtensionCount);
// for (size_t i = 0; i < glfwExtensionCount; ++i) {
// printf("\tExtensions neccessary for glfw: %s\n", glfwExtensions[i]);
// }
// instanceInfo.enabledExtensionCount = glfwExtensionCount;
// instanceInfo.ppEnabledExtensionNames = glfwExtensions;
#if defined(VK_USE_PLATFORM_XLIB_KHR) || defined(VK_USE_PLATFORM_XCB_KHR)
instanceInfo.enabledExtensionCount = 2;
const char * const enabledExtensionNames[] = {
VK_KHR_SURFACE_EXTENSION_NAME,
#if defined(VK_USE_PLATFORM_XLIB_KHR)
VK_KHR_XLIB_SURFACE_EXTENSION_NAME
#elif defined(VK_USE_PLATFORM_XCB_KHR)
VK_KHR_XCB_SURFACE_EXTENSION_NAME
#endif
};
instanceInfo.ppEnabledExtensionNames = enabledExtensionNames;
#endif
instanceInfo.enabledLayerCount = enabledLayerNames.size();
instanceInfo.ppEnabledLayerNames = enabledLayerNames.data();
VK_LOAD_INSTANCE_FUNCTION(nullptr , vkCreateInstance)
vkCheckResult(vkCreateInstance(&instanceInfo, nullptr, &instance));
printf("\n");
return instance;
}
VkPhysicalDevice find_phisical_device(VkInstance& instance)
{
printf("---Checking phisical devices properties\n");
VK_LOAD_INSTANCE_FUNCTION(instance , vkEnumeratePhysicalDevices)
VK_LOAD_INSTANCE_FUNCTION(instance , vkGetPhysicalDeviceProperties)
VK_LOAD_INSTANCE_FUNCTION(instance , vkGetPhysicalDeviceMemoryProperties)
VK_LOAD_INSTANCE_FUNCTION(instance , vkGetPhysicalDeviceFeatures)
VK_LOAD_INSTANCE_FUNCTION(instance , vkGetPhysicalDeviceQueueFamilyProperties)
VK_LOAD_INSTANCE_FUNCTION(instance , vkEnumerateDeviceExtensionProperties)
VkPhysicalDevice gpu; // Physical device
uint32_t gpuCount; // Pysical device count
std::vector<VkPhysicalDevice> gpuList; // List of physical devices
// Get number of GPU count
vkCheckResult(vkEnumeratePhysicalDevices(instance, &gpuCount, nullptr));
if (gpuCount == 0) {
printf("\tSorry, could not detect any GPU on you system\n");
throw VulkanException("No GPU detected");
}
printf("\tNum of GPU units: %d\n", gpuCount);
gpuList.resize(gpuCount);
// Get GPU information
vkCheckResult(vkEnumeratePhysicalDevices(instance, &gpuCount, gpuList.data()));
unsigned int rate = 0;
uint32_t count = 0, selected = 0;
for (auto &gpuDevice : gpuList) {
unsigned int d_rate = 0;
VkPhysicalDeviceProperties pProperties;
VkPhysicalDeviceMemoryProperties memoryProperties;
VkPhysicalDeviceFeatures deviceFeatures;
vkGetPhysicalDeviceMemoryProperties(gpuDevice, &memoryProperties);
vkGetPhysicalDeviceProperties(gpuDevice, &pProperties);
vkGetPhysicalDeviceFeatures(gpuDevice, &deviceFeatures);
printf("\tPhisical GPU name: %s\n", pProperties.deviceName);
if (pProperties.deviceType == VK_PHYSICAL_DEVICE_TYPE_DISCRETE_GPU) {
d_rate += 1000;
}
d_rate += pProperties.limits.maxImageDimension2D;
if (!deviceFeatures.geometryShader) {
d_rate = 0;
}
if (d_rate > rate) {
rate = d_rate;
selected = count;
}
++count;
}
printf("\tSelected device index: %d\n", selected);
return gpuList[selected];
}
const std::vector<uint32_t> find_queue_families(VkInstance& instance, VkPhysicalDevice& gpuDevice, VkSurfaceKHR& surface)
{
VK_LOAD_INSTANCE_FUNCTION(instance, vkGetPhysicalDeviceSurfaceSupportKHR)
uint32_t queueFamilyCount = 0;
std::vector<VkQueueFamilyProperties> queueFamilies;
vkGetPhysicalDeviceQueueFamilyProperties(gpuDevice, &queueFamilyCount, nullptr);
queueFamilies.resize(queueFamilyCount);
std::vector<uint32_t> graphicalQueueFamilies;
std::vector<uint32_t> supportPresentationQueueFamilies;
vkGetPhysicalDeviceQueueFamilyProperties(gpuDevice, &queueFamilyCount, queueFamilies.data());
uint32_t count = 0;
printf("\tDevice have %d queue families\n", queueFamilyCount);
for (const auto queueFamily : queueFamilies) {
VkBool32 presentSupport = false;
vkCheckResult(vkGetPhysicalDeviceSurfaceSupportKHR(gpuDevice, count, surface, &presentSupport));
if (presentSupport) {
printf("\tFound queue family with presentation support with index: %d\n", count);
supportPresentationQueueFamilies.push_back(count);
}
if (queueFamily.queueCount > 0 && (queueFamily.queueFlags & VK_QUEUE_GRAPHICS_BIT)) {
graphicalQueueFamilies.push_back(count);
printf("\tFound graphical queue family with index: %d\n", count);
}
++count;
}
if (!supportPresentationQueueFamilies.size()) {
printf("\tCouldn't find QueueFamily with presentation support");
throw VulkanException("No presentation family\n");
}
if (!graphicalQueueFamilies.size()) {
printf("\tCouldn't find graphical QueueFamily");
throw VulkanException("No graphical family\n");
}
for (const auto& prQF : supportPresentationQueueFamilies) {
if (std::find(graphicalQueueFamilies.begin(), graphicalQueueFamilies.end(), prQF) != graphicalQueueFamilies.end()) {
return std::vector<uint32_t>{prQF};
}
}
return std::vector<uint32_t>{graphicalQueueFamilies[0], supportPresentationQueueFamilies[0]};
}
VkDevice create_logical_device(VkInstance& instance,
VkPhysicalDevice& gpuDevice,
const std::vector<uint32_t>& neccessary_queues,
const std::vector<const char*> enabled_layers)
{
printf("---Creating logical device\n");
VK_LOAD_INSTANCE_FUNCTION(instance, vkCreateDevice)
VK_LOAD_INSTANCE_FUNCTION(instance, vkGetDeviceProcAddr)
// Available extensions and layers names
uint32_t deviceExtensionCount = 0;
std::vector<VkExtensionProperties> deviceExtensionProps;
std::vector<const char *> deviceExtensionNames;
const char* const* _ppExtensionNames = nullptr;
vkEnumerateDeviceExtensionProperties(gpuDevice, nullptr, &deviceExtensionCount, nullptr);
deviceExtensionProps.resize(deviceExtensionCount);
vkEnumerateDeviceExtensionProperties(gpuDevice, nullptr, &deviceExtensionCount, deviceExtensionProps.data());
for (uint32_t i = 0; i < deviceExtensionCount; ++i) {
deviceExtensionNames.push_back(deviceExtensionProps[i].extensionName);
printf("\tDetected device extension:%s\n",deviceExtensionProps[i].extensionName);
}
float queuePriority = 1.0f;
std::vector<VkDeviceQueueCreateInfo> VkDeviceQueueCreateInfos;
for (const auto& queue : neccessary_queues) {
VkDeviceQueueCreateInfo queueCreateInfo = {};
queueCreateInfo.sType = VK_STRUCTURE_TYPE_DEVICE_QUEUE_CREATE_INFO;
queueCreateInfo.flags = 0;
queueCreateInfo.queueFamilyIndex = queue;
queueCreateInfo.queueCount = 1;
queueCreateInfo.pQueuePriorities = &queuePriority;
VkDeviceQueueCreateInfos.push_back(queueCreateInfo);
}
VkDeviceCreateInfo deviceInfo = {};
deviceInfo.sType = VK_STRUCTURE_TYPE_DEVICE_CREATE_INFO;
deviceInfo.pNext = nullptr;
deviceInfo.flags = 0;
deviceInfo.enabledLayerCount = enabled_layers.size();
deviceInfo.ppEnabledLayerNames = enabled_layers.data();
deviceInfo.enabledExtensionCount = deviceExtensionCount;
deviceInfo.ppEnabledExtensionNames = deviceExtensionNames.data();
deviceInfo.queueCreateInfoCount = VkDeviceQueueCreateInfos.size();
deviceInfo.pQueueCreateInfos = VkDeviceQueueCreateInfos.data();
VkDevice logical_device;
vkCheckResult(vkCreateDevice(gpuDevice, &deviceInfo, nullptr, &logical_device));
return logical_device;
}
VkSurfaceKHR create_swapchain_surface(VkInstance& instance)
{
printf("---Creating window surface\n");
#ifdef VK_USE_PLATFORM_XLIB_KHR
VkXlibSurfaceCreateInfoKHR
#elif defined(VK_USE_PLATFORM_XCB_KHR)
VkXcbSurfaceCreateInfoKHR
#endif
surfaceCreateInfo = {};
#ifdef USE_GLFW
surfaceCreateInfo.sType = VK_STRUCTURE_TYPE_XLIB_SURFACE_CREATE_INFO_KHR;
surfaceCreateInfo.window = glfwGetX11Window(window);
surfaceCreateInfo.dpy = glfwGetX11Display();
#elif defined(USE_XCB)
surfaceCreateInfo.sType = VK_STRUCTURE_TYPE_XCB_SURFACE_CREATE_INFO_KHR;
surfaceCreateInfo.window = window;
surfaceCreateInfo.connection = c;
#elif defined(USE_XLIB)
surfaceCreateInfo.sType = VK_STRUCTURE_TYPE_XLIB_SURFACE_CREATE_INFO_KHR;
surfaceCreateInfo.window = window;
surfaceCreateInfo.dpy = display;
#endif
surfaceCreateInfo.pNext = NULL;
surfaceCreateInfo.flags = 0;
VkSurfaceKHR surface;
#if defined(USE_XLIB) || defined(USE_GLFW)
VK_LOAD_INSTANCE_FUNCTION(instance , vkCreateXlibSurfaceKHR)
vkCheckResult(vkCreateXlibSurfaceKHR(instance, &surfaceCreateInfo, nullptr, &surface));
#elif defined(USE_XCB)
VK_LOAD_INSTANCE_FUNCTION(instance , vkCreateXcbSurfaceKHR)
vkCheckResult(vkCreateXcbSurfaceKHR(instance, &surfaceCreateInfo, nullptr, &surface));
#endif
return surface;
}
VkExtent2D getSwapchainExtent(const VkSurfaceCapabilitiesKHR& capabilities)
{
VkExtent2D swapChainExtent;
if (capabilities.currentExtent.width != std::numeric_limits<uint32_t>::max()) {
swapChainExtent = capabilities.currentExtent;
printf("\tCurrent extent: width - %d; height - %d\n", capabilities.currentExtent.width, capabilities.currentExtent.height);
} else {
int width, height;
#ifdef USE_GLFW
glfwGetWindowSize(window, &width, &height);
#endif
VkExtent2D actualExtent = {
static_cast<uint32_t>(width),
static_cast<uint32_t>(height)
};
actualExtent.width = std::max(capabilities.minImageExtent.width, std::min(capabilities.maxImageExtent.width, actualExtent.width));
actualExtent.height = std::max(capabilities.minImageExtent.height, std::min(capabilities.maxImageExtent.height, actualExtent.height));
swapChainExtent = {actualExtent.width, actualExtent.height};
}
return swapChainExtent;
}
uint32_t getImageCount(const VkSurfaceCapabilitiesKHR& capabilities)
{
uint32_t imageCount = capabilities.minImageCount + 1;
if (capabilities.maxImageCount > 0 && imageCount > capabilities.maxImageCount) {
imageCount = capabilities.maxImageCount;
}
printf("\tImage count of swapchain: %d\n", imageCount);
}
struct VkSwapchain
{
VkSwapchainKHR swapchain;
uint32_t imageCount;
VkExtent2D extent;
VkSurfaceFormatKHR format;
};
VkSwapchain create_swapchain(VkInstance& instance,
VkPhysicalDevice& gpuDevice,
VkDevice& logical_device,
VkSurfaceKHR& surface)
{
printf("---Creating swapchain\n");
VK_LOAD_INSTANCE_FUNCTION(instance, vkGetPhysicalDeviceSurfaceFormatsKHR)
VK_LOAD_INSTANCE_FUNCTION(instance, vkGetPhysicalDeviceSurfacePresentModesKHR)
VK_LOAD_INSTANCE_FUNCTION(instance, vkGetPhysicalDeviceSurfaceCapabilitiesKHR)
VK_LOAD_DEVICE_FUNCTION(logical_device, vkCreateSwapchainKHR)
uint32_t formatCount = 0;
vkGetPhysicalDeviceSurfaceFormatsKHR(gpuDevice, surface, &formatCount, nullptr);
std::vector<VkSurfaceFormatKHR> surfaceFormats(formatCount);
if (formatCount) printf("\tAvailable surface formats:%d\n", formatCount);
vkGetPhysicalDeviceSurfaceFormatsKHR(gpuDevice, surface, &formatCount, surfaceFormats.data());
VkSurfaceFormatKHR surfaceFormat;
for (const auto& format : surfaceFormats) {
if (format.format == VK_FORMAT_B8G8R8A8_UNORM && format.colorSpace == VK_COLOR_SPACE_SRGB_NONLINEAR_KHR) {
printf("\t\tFound exactly good format\n");
surfaceFormat = format;
break;
}
}
uint32_t modeCount = 0;
vkGetPhysicalDeviceSurfacePresentModesKHR(gpuDevice, surface, &modeCount, nullptr);
std::vector<VkPresentModeKHR> surfaceModes(modeCount);
if (modeCount) printf("\tAvailable surface modes:%d\n", modeCount);
vkGetPhysicalDeviceSurfacePresentModesKHR(gpuDevice, surface, &modeCount, surfaceModes.data());
VkPresentModeKHR presentMode;
for (const auto& mode : surfaceModes) {
if (mode == VK_PRESENT_MODE_MAILBOX_KHR) {
printf("\t\tFound exactly good mode\n");
presentMode = mode;
}
}
VkSurfaceCapabilitiesKHR capabilities = {};
vkGetPhysicalDeviceSurfaceCapabilitiesKHR(gpuDevice, surface, &capabilities);
auto swapChainExtent = getSwapchainExtent(capabilities);
auto imageCount = getImageCount(capabilities);
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 = swapChainExtent;
createInfo.imageArrayLayers = 1;
createInfo.imageUsage = VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT;
createInfo.imageSharingMode = VK_SHARING_MODE_EXCLUSIVE;
createInfo.queueFamilyIndexCount = 0; // Optional
createInfo.pQueueFamilyIndices = nullptr; // Optional
createInfo.preTransform = capabilities.currentTransform;
createInfo.compositeAlpha = VK_COMPOSITE_ALPHA_OPAQUE_BIT_KHR;
createInfo.presentMode = VK_PRESENT_MODE_MAILBOX_KHR;
createInfo.clipped = VK_TRUE;
createInfo.oldSwapchain = VK_NULL_HANDLE;
VkSwapchainKHR swapChain;
vkCheckResult(vkCreateSwapchainKHR(logical_device, &createInfo, nullptr, &swapChain));
VkSwapchain swapchain;
swapchain.swapchain = swapChain;
swapchain.imageCount = imageCount;
swapchain.extent = swapChainExtent;
swapchain.format = surfaceFormat;
return swapchain;
}
std::vector<VkImageView> create_image_views(VkDevice& logical_device, VkSwapchain& swapChain)
{
printf("---Create image views\n");
VK_LOAD_DEVICE_FUNCTION(logical_device, vkGetSwapchainImagesKHR)
VK_LOAD_DEVICE_FUNCTION(logical_device, vkCreateImageView)
uint32_t imageCount;
std::vector<VkImage> swapChainImages;
vkGetSwapchainImagesKHR(logical_device, swapChain.swapchain, &imageCount, nullptr);
swapChainImages.resize(imageCount);
vkGetSwapchainImagesKHR(logical_device, swapChain.swapchain, &imageCount, swapChainImages.data());
std::vector<VkImageView> swapChainImageViews(imageCount);
for (uint32_t i = 0; i < imageCount; ++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 = swapChain.format.format;
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;
vkCheckResult(vkCreateImageView(logical_device, &createInfo, nullptr, &swapChainImageViews[i]));
}
return swapChainImageViews;
}
VkRenderPass create_render_pass(VkDevice& logical_device, VkSwapchain swapchain)
{
VK_LOAD_DEVICE_FUNCTION(logical_device, vkCreateRenderPass)
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_READ_BIT | VK_ACCESS_COLOR_ATTACHMENT_WRITE_BIT;
VkRenderPass renderPass;
VkRenderPassCreateInfo renderPassInfo = {};
renderPassInfo.dependencyCount = 1;
renderPassInfo.pDependencies = &dependency;
renderPassInfo.sType = VK_STRUCTURE_TYPE_RENDER_PASS_CREATE_INFO;
VkAttachmentDescription colorAttachment = {};
colorAttachment.format = swapchain.format.format;
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;
renderPassInfo.attachmentCount = 1;
renderPassInfo.pAttachments = &colorAttachment;
renderPassInfo.subpassCount = 1;
renderPassInfo.pSubpasses = &subpass;
vkCheckResult(vkCreateRenderPass(logical_device, &renderPassInfo, nullptr, &renderPass));
return renderPass;
}
VkPipelineLayout create_pipeline_layout(VkDevice& logical_device)
{
printf("---Creating pipeline layout\n");
VkPipelineLayout pipelineLayout;
VkPipelineLayoutCreateInfo pipelineLayoutInfo = {};
pipelineLayoutInfo.sType = VK_STRUCTURE_TYPE_PIPELINE_LAYOUT_CREATE_INFO;
pipelineLayoutInfo.setLayoutCount = 0; // Optional
pipelineLayoutInfo.pSetLayouts = nullptr; // Optional
pipelineLayoutInfo.pushConstantRangeCount = 0; // Optional
pipelineLayoutInfo.pPushConstantRanges = 0; // Optional
VK_LOAD_DEVICE_FUNCTION(logical_device, vkCreatePipelineLayout)
vkCheckResult(vkCreatePipelineLayout(logical_device, &pipelineLayoutInfo, nullptr, &pipelineLayout));
return pipelineLayout;
}
VkPipeline create_pipeline(VkDevice& logical_device,
VkPipelineShaderStageCreateInfo shaderStages[],
VkExtent2D& swapchainExtent,
VkRenderPass& renderPass,
VkPipelineLayout& pipelineLayout
)
{
printf("---Creating pipeline\n");
VkPipelineVertexInputStateCreateInfo vertexInputInfo = {};
vertexInputInfo.sType = VK_STRUCTURE_TYPE_PIPELINE_VERTEX_INPUT_STATE_CREATE_INFO;
vertexInputInfo.vertexBindingDescriptionCount = 0;
vertexInputInfo.pVertexBindingDescriptions = nullptr; // Optional
vertexInputInfo.vertexAttributeDescriptionCount = 0;
vertexInputInfo.pVertexAttributeDescriptions = nullptr; // Optional
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;
rasterizer.depthBiasConstantFactor = 0.0f; // Optional
rasterizer.depthBiasClamp = 0.0f; // Optional
rasterizer.depthBiasSlopeFactor = 0.0f; // Optional
VkPipelineMultisampleStateCreateInfo multisampling = {};
multisampling.sType = VK_STRUCTURE_TYPE_PIPELINE_MULTISAMPLE_STATE_CREATE_INFO;
multisampling.sampleShadingEnable = VK_FALSE;
multisampling.rasterizationSamples = VK_SAMPLE_COUNT_1_BIT;
multisampling.minSampleShading = 1.0f; // Optional
multisampling.pSampleMask = nullptr; // Optional
multisampling.alphaToCoverageEnable = VK_FALSE; // Optional
multisampling.alphaToOneEnable = VK_FALSE; // Optional
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;
colorBlendAttachment.srcColorBlendFactor = VK_BLEND_FACTOR_ONE; // Optional
colorBlendAttachment.dstColorBlendFactor = VK_BLEND_FACTOR_ZERO; // Optional
colorBlendAttachment.colorBlendOp = VK_BLEND_OP_ADD; // Optional
colorBlendAttachment.srcAlphaBlendFactor = VK_BLEND_FACTOR_ONE; // Optional
colorBlendAttachment.dstAlphaBlendFactor = VK_BLEND_FACTOR_ZERO; // Optional
colorBlendAttachment.alphaBlendOp = VK_BLEND_OP_ADD; // Optional
VkPipelineColorBlendStateCreateInfo colorBlending = {};
colorBlending.sType = VK_STRUCTURE_TYPE_PIPELINE_COLOR_BLEND_STATE_CREATE_INFO;
colorBlending.logicOpEnable = VK_FALSE;
colorBlending.logicOp = VK_LOGIC_OP_COPY; // Optional
colorBlending.attachmentCount = 1;
colorBlending.pAttachments = &colorBlendAttachment;
colorBlending.blendConstants[0] = 0.0f; // Optional
colorBlending.blendConstants[1] = 0.0f; // Optional
colorBlending.blendConstants[2] = 0.0f; // Optional
colorBlending.blendConstants[3] = 0.0f; // Optional
VK_LOAD_DEVICE_FUNCTION(logical_device, vkCreateGraphicsPipelines)
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.pDepthStencilState = nullptr; // Optional
pipelineInfo.pColorBlendState = &colorBlending;
pipelineInfo.pDynamicState = nullptr; // Optional
pipelineInfo.layout = pipelineLayout;
pipelineInfo.renderPass = renderPass;
pipelineInfo.subpass = 0;
pipelineInfo.basePipelineHandle = VK_NULL_HANDLE; // Optional
pipelineInfo.basePipelineIndex = -1; // Optional
VkPipeline graphicsPipeline;
vkCheckResult(vkCreateGraphicsPipelines(logical_device, VK_NULL_HANDLE, 1, &pipelineInfo, nullptr, &graphicsPipeline));
printf("---Pipeline created\n");
return graphicsPipeline;
}
int main()
{
printf("\t\t######START######\n");
#if defined(VK_USE_PLATFORM_WIN32_KHR)
VULKAN_LIBRARY = LoadLibrary( "vulkan-1.dll" );
#elif defined(VK_USE_PLATFORM_XCB_KHR) || defined(VK_USE_PLATFORM_XLIB_KHR)
VULKAN_LIBRARY = dlopen( "libvulkan.so", RTLD_NOW );
#endif
if( VULKAN_LIBRARY == nullptr ) {
printf("Couldn't load Vulkan Library\n");
return 0;
}
create_window();
VK_EXPORTED_FUNCTION( vkGetInstanceProcAddr )
available_layers_and_extensions();
#define ENABLED_DEBUG
#ifdef ENABLED_DEBUG
const std::vector<const char*> enabledLayerNames = {
"VK_LAYER_LUNARG_standard_validation",
"VK_LAYER_LUNARG_object_tracker" };
#else
const std::vector<const char*> enabledLayerNames = {};
#endif
auto instance = init_vulkan_instance(enabledLayerNames);
auto gpu = find_phisical_device(instance);
auto swapchain_surface = create_swapchain_surface(instance);
auto queueFamilies = find_queue_families(instance, gpu, swapchain_surface);
auto device = create_logical_device(instance, gpu, queueFamilies, enabledLayerNames);
auto swapchain = create_swapchain(instance, gpu, device, swapchain_surface);
auto graphicsQueueFamilyIndex = queueFamilies[0];
VK_LOAD_INSTANCE_FUNCTION(instance, vkGetDeviceQueue)
VkQueue graphicsQueue;
VkQueue presentQueue;
if (queueFamilies.size() > 1) {
vkGetDeviceQueue(device, queueFamilies[0], 0, &graphicsQueue);
vkGetDeviceQueue(device, queueFamilies[1], 0, &presentQueue);
} else {
vkGetDeviceQueue(device, queueFamilies[0], 0, &graphicsQueue);
vkGetDeviceQueue(device, queueFamilies[0], 0, &presentQueue);
}
printf("---Loading shaders\n");
auto vertexShader = load_shader("vert.spv");
auto fragmentShader = load_shader("frag.spv");
VK_LOAD_DEVICE_FUNCTION(device , vkCreateShaderModule)
VkShaderModule vertModule = create_vertex_module(vkCreateShaderModule, device, vertexShader);
VkShaderModule fragModule = create_vertex_module(vkCreateShaderModule, device, fragmentShader);
printf("---Creating shader stage\n");
VkPipelineShaderStageCreateInfo vertShaderStageInfo = {};
vertShaderStageInfo.sType = VK_STRUCTURE_TYPE_PIPELINE_SHADER_STAGE_CREATE_INFO;
vertShaderStageInfo.stage = VK_SHADER_STAGE_VERTEX_BIT;
vertShaderStageInfo.module = vertModule;
vertShaderStageInfo.pName = "main";
vertShaderStageInfo.pSpecializationInfo = nullptr;
VkPipelineShaderStageCreateInfo fragShaderStageInfo = {};
fragShaderStageInfo.sType = VK_STRUCTURE_TYPE_PIPELINE_SHADER_STAGE_CREATE_INFO;
fragShaderStageInfo.stage = VK_SHADER_STAGE_FRAGMENT_BIT;
fragShaderStageInfo.module = fragModule;
fragShaderStageInfo.pName = "main";
fragShaderStageInfo.pSpecializationInfo = nullptr;
VkPipelineShaderStageCreateInfo shaderStages[] = {vertShaderStageInfo, fragShaderStageInfo};
auto renderPass = create_render_pass(device, swapchain);
auto pipelineLayout = create_pipeline_layout(device);
auto graphicalPipeline = create_pipeline(device, shaderStages, swapchain.extent, renderPass, pipelineLayout);
auto swapChainImageViews = create_image_views(device, swapchain);
printf("---Creating framebuffer\n");
VK_LOAD_DEVICE_FUNCTION(device, vkCreateFramebuffer)
std::vector<VkFramebuffer> swapChainFramebuffers(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 = swapchain.extent.width;
framebufferInfo.height = swapchain.extent.height;
framebufferInfo.layers = 1;
vkCheckResult(vkCreateFramebuffer(device, &framebufferInfo, nullptr, &swapChainFramebuffers[i]));
}
printf("---Creating command pool\n");
VK_LOAD_DEVICE_FUNCTION(device, vkCreateCommandPool)
VK_LOAD_DEVICE_FUNCTION(device, vkAllocateCommandBuffers)
VK_LOAD_DEVICE_FUNCTION(device, vkBeginCommandBuffer)
VkCommandPool commandPool;
VkCommandPoolCreateInfo poolInfo = {};
poolInfo.sType = VK_STRUCTURE_TYPE_COMMAND_POOL_CREATE_INFO;
poolInfo.queueFamilyIndex = graphicsQueueFamilyIndex;
poolInfo.flags = 0; // Optional
vkCheckResult(vkCreateCommandPool(device, &poolInfo, nullptr, &commandPool));
std::vector<VkCommandBuffer> commandBuffers(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();
vkCheckResult(vkAllocateCommandBuffers(device, &allocInfo, commandBuffers.data()));
VK_LOAD_DEVICE_FUNCTION(device, vkCmdBeginRenderPass)
VK_LOAD_DEVICE_FUNCTION(device, vkCmdBindPipeline)
VK_LOAD_DEVICE_FUNCTION(device, vkCmdDraw)
VK_LOAD_DEVICE_FUNCTION(device, vkCmdEndRenderPass)
VK_LOAD_DEVICE_FUNCTION(device, vkEndCommandBuffer)
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;
beginInfo.pInheritanceInfo = nullptr; // Optional
vkCheckResult(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 = swapchain.extent;
VkClearValue clearColor = {0.0f, 0.0f, 0.0f, 1.0f};
renderPassInfo.clearValueCount = 1;
renderPassInfo.pClearValues = &clearColor;
vkCmdBeginRenderPass(commandBuffers[i], &renderPassInfo, VK_SUBPASS_CONTENTS_INLINE);
vkCmdBindPipeline(commandBuffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, graphicalPipeline);
vkCmdDraw(commandBuffers[i], 3, 1, 0, 0);
vkCmdEndRenderPass(commandBuffers[i]);
vkCheckResult(vkEndCommandBuffer(commandBuffers[i]));
}
VK_LOAD_DEVICE_FUNCTION(device, vkCreateSemaphore)
VkSemaphoreCreateInfo semaphoreInfo = {};
semaphoreInfo.sType = VK_STRUCTURE_TYPE_SEMAPHORE_CREATE_INFO;
VkSemaphore imageAvailableSemaphore;
VkSemaphore renderFinishedSemaphore;
vkCheckResult(vkCreateSemaphore(device, &semaphoreInfo, nullptr, &imageAvailableSemaphore));
vkCheckResult(vkCreateSemaphore(device, &semaphoreInfo, nullptr, &renderFinishedSemaphore));
printf("---Starting main window-loop\n");
window_main_loop(device, swapchain.swapchain,
imageAvailableSemaphore, renderFinishedSemaphore,
commandBuffers, graphicsQueue, presentQueue);
printf("---Unloading vulkan application\n");
VK_LOAD_DEVICE_FUNCTION(device, vkDestroySemaphore)
vkDestroySemaphore(device, renderFinishedSemaphore, nullptr);
vkDestroySemaphore(device, imageAvailableSemaphore, nullptr);