added triangle test

test/CMakeLists.txt

@@ -1,9 +1,2 @@
-file(GLOB testSrc
-	"*.h"
-	"*.cpp"
-)
-
-add_executable(vulkanTest ${testSrc})
-target_compile_options(vulkanTest PRIVATE -Wall -std=c++11)
-
-target_link_libraries(vulkanTest vulkan-1-rpi)
+add_subdirectory(clear)
+add_subdirectory(triangle)

test/clear/CMakeLists.txt

@@ -0,0 +1,9 @@
+file(GLOB testSrc
+	"*.h"
+	"*.cpp"
+)
+
+add_executable(clear ${testSrc})
+target_compile_options(clear PRIVATE -Wall -std=c++11)
+
+target_link_libraries(clear vulkan-1-rpi)

test/clear/clear.cpp

@@ -86,8 +86,8 @@ void setupVulkan() {
 
 void mainLoop() {
 	//while (!glfwWindowShouldClose(window)) {
-	//for(int c = 0; c < 120; ++c){
-	for(int c = 0; c < 1; ++c){
+	for(int c = 0; c < 10; ++c){
+	//for(int c = 0; c < 1; ++c){
 		draw();
 
 		//	glfwPollEvents();

test/triangle/CMakeLists.txt

@@ -0,0 +1,9 @@
+file(GLOB testSrc
+	"*.h"
+	"*.cpp"
+)
+
+add_executable(triangle ${testSrc})
+target_compile_options(triangle PRIVATE -Wall -std=c++11)
+
+target_link_libraries(triangle vulkan-1-rpi)

test/triangle/triangle.cpp

@@ -0,0 +1,910 @@
+#include <iostream>
+#include <vector>
+#include <algorithm>
+#include <string.h>
+#include "driver/CustomAssert.h"
+
+#include <vulkan/vulkan.h>
+
+#include "driver/vkExt.h"
+
+//#define GLFW_INCLUDE_VULKAN
+//#define VK_USE_PLATFORM_WIN32_KHR
+//#include <GLFW/glfw3.h>
+
+//#define GLFW_EXPOSE_NATIVE_WIN32
+//#include <GLFW/glfw3native.h>
+
+//GLFWwindow * window;
+
+#define WINDOW_WIDTH 640
+#define WINDOW_HEIGHT 480
+
+const char* fragShader =
+"#version 400\n"
+"layout(location = 0) out vec4 out_Color;\n"
+"void main() { out_Color = vec4( 0.0, 0.4, 1.0, 1.0 ); }";
+
+const char* vertShader =
+"#version 400\n"
+"void main() { vec2 pos[3] = vec2[3]( vec2(-0.7, 0.7), vec2(0.7, 0.7), vec2(0.0, -0.7) ); gl_Position = vec4( pos[gl_VertexIndex], 0.0, 1.0 ); }";
+
+// Note: support swap chain recreation (not only required for resized windows!)
+// Note: window resize may not result in Vulkan telling that the swap chain should be recreated, should be handled explicitly!
+void run();
+void setupVulkan();
+void mainLoop();
+void cleanup();
+void createInstance();
+void createWindowSurface();
+void findPhysicalDevice();
+void checkSwapChainSupport();
+void findQueueFamilies();
+void createLogicalDevice();
+void createSemaphores();
+void createSwapChain();
+void createCommandQueues();
+void draw();
+void CreateRenderPass();
+void CreateFramebuffer();
+void CreateShaders();
+void CreatePipeline();
+void recordCommandBuffers();
+VkSurfaceFormatKHR chooseSurfaceFormat(const std::vector<VkSurfaceFormatKHR>& availableFormats);
+VkExtent2D chooseSwapExtent(const VkSurfaceCapabilitiesKHR& surfaceCapabilities);
+VkPresentModeKHR choosePresentMode(const std::vector<VkPresentModeKHR> presentModes);
+
+VkInstance instance; //
+VkSurfaceKHR windowSurface; //
+VkPhysicalDevice physicalDevice;
+VkDevice device; //
+VkSemaphore imageAvailableSemaphore; //
+VkSemaphore renderingFinishedSemaphore; //
+VkSwapchainKHR swapChain; //
+VkCommandPool commandPool; //
+std::vector<VkCommandBuffer> presentCommandBuffers; //
+std::vector<VkImage> swapChainImages; //
+VkRenderPass renderPass; //
+std::vector<VkFramebuffer> fbs; //
+VkShaderModule vsModule; //
+VkShaderModule fsModule; //
+VkPipeline pipeline; //
+VkQueue graphicsQueue;
+VkQueue presentQueue;
+std::vector<VkImageView> views; //?
+
+uint32_t graphicsQueueFamily;
+uint32_t presentQueueFamily;
+
+void cleanup() {
+	vkDeviceWaitIdle(device);
+
+	// Note: this is done implicitly when the command pool is freed, but nice to know about
+	vkFreeCommandBuffers(device, commandPool, presentCommandBuffers.size(), presentCommandBuffers.data());
+	vkDestroyCommandPool(device, commandPool, nullptr);
+
+	vkDestroySemaphore(device, imageAvailableSemaphore, nullptr);
+	vkDestroySemaphore(device, renderingFinishedSemaphore, nullptr);
+
+	for(int c = 0; c < views.size(); ++c)
+		vkDestroyImageView(device, views[c], 0);
+
+	for (int c = 0; c < fbs.size(); ++c)
+		vkDestroyFramebuffer(device, fbs[c], 0);
+
+	vkDestroyRenderPass(device, renderPass, 0);
+
+	vkDestroyShaderModule(device, vsModule, 0);
+	vkDestroyShaderModule(device, fsModule, 0);
+
+	vkDestroyPipeline(device, pipeline, 0);
+
+	// Note: implicitly destroys images (in fact, we're not allowed to do that explicitly)
+	vkDestroySwapchainKHR(device, swapChain, nullptr);
+
+	vkDestroyDevice(device, nullptr);
+
+	vkDestroySurfaceKHR(instance, windowSurface, nullptr);
+
+	vkDestroyInstance(instance, nullptr);
+}
+
+void run() {
+	// Note: dynamically loading loader may be a better idea to fail gracefully when Vulkan is not supported
+
+	// Create window for Vulkan
+	//glfwInit();
+
+	//glfwWindowHint(GLFW_CLIENT_API, GLFW_NO_API);
+	//glfwWindowHint(GLFW_RESIZABLE, GLFW_FALSE);
+
+	//window = glfwCreateWindow(WINDOW_WIDTH, WINDOW_HEIGHT, "The 630 line cornflower blue window", nullptr, nullptr);
+
+	// Use Vulkan
+	setupVulkan();
+
+	mainLoop();
+
+	cleanup();
+}
+
+void setupVulkan() {
+	createInstance();
+	createWindowSurface();
+	findPhysicalDevice();
+	checkSwapChainSupport();
+	findQueueFamilies();
+	createLogicalDevice();
+	createSemaphores();
+	createSwapChain();
+	createCommandQueues();
+	CreateRenderPass();
+	CreateFramebuffer();
+	CreateShaders();
+	CreatePipeline();
+	recordCommandBuffers();
+}
+
+void mainLoop() {
+	//while (!glfwWindowShouldClose(window)) {
+	for(int c = 0; c < 10; ++c){
+		draw();
+
+		//glfwPollEvents();
+	}
+}
+
+void createInstance() {
+	VkApplicationInfo appInfo = {};
+	appInfo.sType = VK_STRUCTURE_TYPE_APPLICATION_INFO;
+	appInfo.pApplicationName = "VulkanTriangle";
+	appInfo.applicationVersion = VK_MAKE_VERSION(1, 0, 0);
+	appInfo.pEngineName = "TriangleEngine";
+	appInfo.engineVersion = VK_MAKE_VERSION(1, 0, 0);
+	appInfo.apiVersion = VK_API_VERSION_1_0;
+
+	// Get instance extensions required by GLFW to draw to window
+	//unsigned int glfwExtensionCount;
+	//const char** glfwExtensions;
+	//glfwExtensions = glfwGetRequiredInstanceExtensions(&glfwExtensionCount);
+
+	// Check for extensions
+	uint32_t extensionCount = 0;
+	vkEnumerateInstanceExtensionProperties(nullptr, &extensionCount, nullptr);
+
+	if (extensionCount == 0) {
+		std::cerr << "no extensions supported!" << std::endl;
+		assert(0);
+	}
+
+	std::vector<VkExtensionProperties> availableExtensions(extensionCount);
+	vkEnumerateInstanceExtensionProperties(nullptr, &extensionCount, availableExtensions.data());
+
+	std::cout << "supported extensions:" << std::endl;
+
+	for (const auto& extension : availableExtensions) {
+		std::cout << "\t" << extension.extensionName << std::endl;
+	}
+
+	VkInstanceCreateInfo createInfo = {};
+	createInfo.sType = VK_STRUCTURE_TYPE_INSTANCE_CREATE_INFO;
+	createInfo.pApplicationInfo = &appInfo;
+	//createInfo.enabledExtensionCount = glfwExtensionCount;
+	createInfo.enabledExtensionCount = 0;
+	//createInfo.ppEnabledExtensionNames = glfwExtensions;
+	createInfo.ppEnabledExtensionNames = 0;
+	createInfo.enabledLayerCount = 0;
+	createInfo.ppEnabledLayerNames = 0;
+
+	// Initialize Vulkan instance
+	if (vkCreateInstance(&createInfo, nullptr, &instance) != VK_SUCCESS) {
+		std::cerr << "failed to create instance!" << std::endl;
+		assert(0);
+	}
+	else {
+		std::cout << "created vulkan instance" << std::endl;
+	}
+}
+
+void createWindowSurface() {
+	if (vkCreateRpiSurfaceKHR(instance, 0, 0, &windowSurface) != VK_SUCCESS) {
+		std::cerr << "failed to create window surface!" << std::endl;
+		assert(0);
+	}
+
+	std::cout << "created window surface" << std::endl;
+}
+
+void findPhysicalDevice() {
+	// Try to find 1 Vulkan supported device
+	// Note: perhaps refactor to loop through devices and find first one that supports all required features and extensions
+	uint32_t deviceCount = 1;
+	VkResult res = vkEnumeratePhysicalDevices(instance, &deviceCount, &physicalDevice);
+	if (res != VK_SUCCESS && res != VK_INCOMPLETE) {
+		std::cerr << "enumerating physical devices failed!" << std::endl;
+		assert(0);
+	}
+
+	if (deviceCount == 0) {
+		std::cerr << "no physical devices that support vulkan!" << std::endl;
+		assert(0);
+	}
+
+	std::cout << "physical device with vulkan support found" << std::endl;
+
+	// Check device features
+	// Note: will apiVersion >= appInfo.apiVersion? Probably yes, but spec is unclear.
+	VkPhysicalDeviceProperties deviceProperties;
+	VkPhysicalDeviceFeatures deviceFeatures;
+	vkGetPhysicalDeviceProperties(physicalDevice, &deviceProperties);
+	vkGetPhysicalDeviceFeatures(physicalDevice, &deviceFeatures);
+
+	uint32_t supportedVersion[] = {
+		VK_VERSION_MAJOR(deviceProperties.apiVersion),
+		VK_VERSION_MINOR(deviceProperties.apiVersion),
+		VK_VERSION_PATCH(deviceProperties.apiVersion)
+	};
+
+	std::cout << "physical device supports version " << supportedVersion[0] << "." << supportedVersion[1] << "." << supportedVersion[2] << std::endl;
+}
+
+void checkSwapChainSupport() {
+	uint32_t extensionCount = 0;
+	vkEnumerateDeviceExtensionProperties(physicalDevice, nullptr, &extensionCount, nullptr);
+
+	if (extensionCount == 0) {
+		std::cerr << "physical device doesn't support any extensions" << std::endl;
+		assert(0);
+	}
+
+	std::vector<VkExtensionProperties> deviceExtensions(extensionCount);
+	vkEnumerateDeviceExtensionProperties(physicalDevice, nullptr, &extensionCount, deviceExtensions.data());
+
+	for (const auto& extension : deviceExtensions) {
+		if (strcmp(extension.extensionName, VK_KHR_SWAPCHAIN_EXTENSION_NAME) == 0) {
+			std::cout << "physical device supports swap chains" << std::endl;
+			return;
+		}
+	}
+
+	std::cerr << "physical device doesn't support swap chains" << std::endl;
+	assert(0);
+}
+
+void findQueueFamilies() {
+	// Check queue families
+	uint32_t queueFamilyCount = 0;
+	vkGetPhysicalDeviceQueueFamilyProperties(physicalDevice, &queueFamilyCount, nullptr);
+
+	if (queueFamilyCount == 0) {
+		std::cout << "physical device has no queue families!" << std::endl;
+		assert(0);
+	}
+
+	// Find queue family with graphics support
+	// Note: is a transfer queue necessary to copy vertices to the gpu or can a graphics queue handle that?
+	std::vector<VkQueueFamilyProperties> queueFamilies(queueFamilyCount);
+	vkGetPhysicalDeviceQueueFamilyProperties(physicalDevice, &queueFamilyCount, queueFamilies.data());
+
+	std::cout << "physical device has " << queueFamilyCount << " queue families" << std::endl;
+
+	bool foundGraphicsQueueFamily = false;
+	bool foundPresentQueueFamily = false;
+
+	for (uint32_t i = 0; i < queueFamilyCount; i++) {
+		VkBool32 presentSupport = false;
+		vkGetPhysicalDeviceSurfaceSupportKHR(physicalDevice, i, windowSurface, &presentSupport);
+
+		if (queueFamilies[i].queueCount > 0 && queueFamilies[i].queueFlags & VK_QUEUE_GRAPHICS_BIT) {
+			graphicsQueueFamily = i;
+			foundGraphicsQueueFamily = true;
+
+			if (presentSupport) {
+				presentQueueFamily = i;
+				foundPresentQueueFamily = true;
+				break;
+			}
+		}
+
+		if (!foundPresentQueueFamily && presentSupport) {
+			presentQueueFamily = i;
+			foundPresentQueueFamily = true;
+		}
+	}
+
+	if (foundGraphicsQueueFamily) {
+		std::cout << "queue family #" << graphicsQueueFamily << " supports graphics" << std::endl;
+
+		if (foundPresentQueueFamily) {
+			std::cout << "queue family #" << presentQueueFamily << " supports presentation" << std::endl;
+		}
+		else {
+			std::cerr << "could not find a valid queue family with present support" << std::endl;
+			assert(0);
+		}
+	}
+	else {
+		std::cerr << "could not find a valid queue family with graphics support" << std::endl;
+		assert(0);
+	}
+}
+
+void createLogicalDevice() {
+	// Greate one graphics queue and optionally a separate presentation queue
+	float queuePriority = 1.0f;
+
+	VkDeviceQueueCreateInfo queueCreateInfo[2] = {};
+
+	queueCreateInfo[0].sType = VK_STRUCTURE_TYPE_DEVICE_QUEUE_CREATE_INFO;
+	queueCreateInfo[0].queueFamilyIndex = graphicsQueueFamily;
+	queueCreateInfo[0].queueCount = 1;
+	queueCreateInfo[0].pQueuePriorities = &queuePriority;
+
+	queueCreateInfo[0].sType = VK_STRUCTURE_TYPE_DEVICE_QUEUE_CREATE_INFO;
+	queueCreateInfo[0].queueFamilyIndex = presentQueueFamily;
+	queueCreateInfo[0].queueCount = 1;
+	queueCreateInfo[0].pQueuePriorities = &queuePriority;
+
+	// Create logical device from physical device
+	// Note: there are separate instance and device extensions!
+	VkDeviceCreateInfo deviceCreateInfo = {};
+	deviceCreateInfo.sType = VK_STRUCTURE_TYPE_DEVICE_CREATE_INFO;
+	deviceCreateInfo.pQueueCreateInfos = queueCreateInfo;
+
+	if (graphicsQueueFamily == presentQueueFamily) {
+		deviceCreateInfo.queueCreateInfoCount = 1;
+	}
+	else {
+		deviceCreateInfo.queueCreateInfoCount = 2;
+	}
+
+	const char* deviceExtensions = VK_KHR_SWAPCHAIN_EXTENSION_NAME;
+	deviceCreateInfo.enabledExtensionCount = 1;
+	deviceCreateInfo.ppEnabledExtensionNames = &deviceExtensions;
+
+	if (vkCreateDevice(physicalDevice, &deviceCreateInfo, nullptr, &device) != VK_SUCCESS) {
+		std::cerr << "failed to create logical device" << std::endl;
+		assert(0);
+	}
+
+	std::cout << "created logical device" << std::endl;
+
+	// Get graphics and presentation queues (which may be the same)
+	vkGetDeviceQueue(device, graphicsQueueFamily, 0, &graphicsQueue);
+	vkGetDeviceQueue(device, presentQueueFamily, 0, &presentQueue);
+
+	std::cout << "acquired graphics and presentation queues" << std::endl;
+}
+
+void createSemaphores() {
+	VkSemaphoreCreateInfo createInfo = {};
+	createInfo.sType = VK_STRUCTURE_TYPE_SEMAPHORE_CREATE_INFO;
+
+	if (vkCreateSemaphore(device, &createInfo, nullptr, &imageAvailableSemaphore) != VK_SUCCESS ||
+		vkCreateSemaphore(device, &createInfo, nullptr, &renderingFinishedSemaphore) != VK_SUCCESS) {
+		std::cerr << "failed to create semaphores" << std::endl;
+		assert(0);
+	}
+	else {
+		std::cout << "created semaphores" << std::endl;
+	}
+}
+
+void createSwapChain() {
+	// Find surface capabilities
+	VkSurfaceCapabilitiesKHR surfaceCapabilities;
+	if (vkGetPhysicalDeviceSurfaceCapabilitiesKHR(physicalDevice, windowSurface, &surfaceCapabilities) != VK_SUCCESS) {
+		std::cerr << "failed to acquire presentation surface capabilities" << std::endl;
+		assert(0);
+	}
+
+	// Find supported surface formats
+	uint32_t formatCount;
+	if (vkGetPhysicalDeviceSurfaceFormatsKHR(physicalDevice, windowSurface, &formatCount, nullptr) != VK_SUCCESS || formatCount == 0) {
+		std::cerr << "failed to get number of supported surface formats" << std::endl;
+		assert(0);
+	}
+
+	std::vector<VkSurfaceFormatKHR> surfaceFormats(formatCount);
+	if (vkGetPhysicalDeviceSurfaceFormatsKHR(physicalDevice, windowSurface, &formatCount, surfaceFormats.data()) != VK_SUCCESS) {
+		std::cerr << "failed to get supported surface formats" << std::endl;
+		assert(0);
+	}
+
+	// Find supported present modes
+	uint32_t presentModeCount;
+	if (vkGetPhysicalDeviceSurfacePresentModesKHR(physicalDevice, windowSurface, &presentModeCount, nullptr) != VK_SUCCESS || presentModeCount == 0) {
+		std::cerr << "failed to get number of supported presentation modes" << std::endl;
+		assert(0);
+	}
+
+	std::vector<VkPresentModeKHR> presentModes(presentModeCount);
+	if (vkGetPhysicalDeviceSurfacePresentModesKHR(physicalDevice, windowSurface, &presentModeCount, presentModes.data()) != VK_SUCCESS) {
+		std::cerr << "failed to get supported presentation modes" << std::endl;
+		assert(0);
+	}
+
+	// Determine number of images for swap chain
+	uint32_t imageCount = surfaceCapabilities.minImageCount + 1;
+	if (surfaceCapabilities.maxImageCount != 0 && imageCount > surfaceCapabilities.maxImageCount) {
+		imageCount = surfaceCapabilities.maxImageCount;
+	}
+
+	std::cout << "using " << imageCount << " images for swap chain" << std::endl;
+
+	// Select a surface format
+	VkSurfaceFormatKHR surfaceFormat = chooseSurfaceFormat(surfaceFormats);
+
+	// Select swap chain size
+	VkExtent2D swapChainExtent = chooseSwapExtent(surfaceCapabilities);
+
+	// Check if swap chain supports being the destination of an image transfer
+	// Note: AMD driver bug, though it would be nice to implement a workaround that doesn't use transfering
+	//if (!(surfaceCapabilities.supportedUsageFlags & VK_IMAGE_USAGE_TRANSFER_DST_BIT)) {
+	//	std::cerr << "swap chain image does not support VK_IMAGE_TRANSFER_DST usage" << std::endl;
+		//assert(0);
+	//}
+
+	// Determine transformation to use (preferring no transform)
+	VkSurfaceTransformFlagBitsKHR surfaceTransform;
+	if (surfaceCapabilities.supportedTransforms & VK_SURFACE_TRANSFORM_IDENTITY_BIT_KHR) {
+		surfaceTransform = VK_SURFACE_TRANSFORM_IDENTITY_BIT_KHR;
+	}
+	else {
+		surfaceTransform = surfaceCapabilities.currentTransform;
+	}
+
+	// Choose presentation mode (preferring MAILBOX ~= triple buffering)
+	VkPresentModeKHR presentMode = choosePresentMode(presentModes);
+
+	// Finally, create the swap chain
+	VkSwapchainCreateInfoKHR createInfo = {};
+	createInfo.sType = VK_STRUCTURE_TYPE_SWAPCHAIN_CREATE_INFO_KHR;
+	createInfo.surface = windowSurface;
+	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;
+	createInfo.pQueueFamilyIndices = nullptr;
+	createInfo.preTransform = surfaceTransform;
+	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) {
+		std::cerr << "failed to create swap chain" << std::endl;
+		assert(0);
+	}
+	else {
+		std::cout << "created swap chain" << std::endl;
+	}
+
+	// Store the images used by the swap chain
+	// Note: these are the images that swap chain image indices refer to
+	// Note: actual number of images may differ from requested number, since it's a lower bound
+	uint32_t actualImageCount = 0;
+	if (vkGetSwapchainImagesKHR(device, swapChain, &actualImageCount, nullptr) != VK_SUCCESS || actualImageCount == 0) {
+		std::cerr << "failed to acquire number of swap chain images" << std::endl;
+		assert(0);
+	}
+
+	swapChainImages.resize(actualImageCount);
+	views.resize(actualImageCount);
+
+	if (vkGetSwapchainImagesKHR(device, swapChain, &actualImageCount, swapChainImages.data()) != VK_SUCCESS) {
+		std::cerr << "failed to acquire swap chain images" << std::endl;
+		assert(0);
+	}
+
+	std::cout << "acquired swap chain images" << std::endl;
+}
+
+VkSurfaceFormatKHR chooseSurfaceFormat(const std::vector<VkSurfaceFormatKHR>& availableFormats) {
+	// We can either choose any format
+	if (availableFormats.size() == 1 && availableFormats[0].format == VK_FORMAT_UNDEFINED) {
+		return { VK_FORMAT_R8G8B8A8_UNORM, VK_COLORSPACE_SRGB_NONLINEAR_KHR };
+	}
+
+	// Or go with the standard format - if available
+	for (const auto& availableSurfaceFormat : availableFormats) {
+		if (availableSurfaceFormat.format == VK_FORMAT_R8G8B8A8_UNORM) {
+			return availableSurfaceFormat;
+		}
+	}
+
+	// Or fall back to the first available one
+	return availableFormats[0];
+}
+
+VkExtent2D chooseSwapExtent(const VkSurfaceCapabilitiesKHR& surfaceCapabilities) {
+	if (surfaceCapabilities.currentExtent.width == -1) {
+		VkExtent2D swapChainExtent = {};
+
+#define min(a, b) (a < b ? a : b)
+#define max(a, b) (a > b ? a : b)
+		swapChainExtent.width = min(max(WINDOW_WIDTH, surfaceCapabilities.minImageExtent.width), surfaceCapabilities.maxImageExtent.width);
+		swapChainExtent.height = min(max(WINDOW_HEIGHT, surfaceCapabilities.minImageExtent.height), surfaceCapabilities.maxImageExtent.height);
+
+		return swapChainExtent;
+	}
+	else {
+		return surfaceCapabilities.currentExtent;
+	}
+}
+
+VkPresentModeKHR choosePresentMode(const std::vector<VkPresentModeKHR> presentModes) {
+	for (const auto& presentMode : presentModes) {
+		if (presentMode == VK_PRESENT_MODE_MAILBOX_KHR) {
+			return presentMode;
+		}
+	}
+
+	// If mailbox is unavailable, fall back to FIFO (guaranteed to be available)
+	return VK_PRESENT_MODE_FIFO_KHR;
+}
+
+void createCommandQueues() {
+	// Create presentation command pool
+	// Note: only command buffers for a single queue family can be created from this pool
+	VkCommandPoolCreateInfo poolCreateInfo = {};
+	poolCreateInfo.sType = VK_STRUCTURE_TYPE_COMMAND_POOL_CREATE_INFO;
+	poolCreateInfo.queueFamilyIndex = presentQueueFamily;
+
+	if (vkCreateCommandPool(device, &poolCreateInfo, nullptr, &commandPool) != VK_SUCCESS) {
+		std::cerr << "failed to create command queue for presentation queue family" << std::endl;
+		assert(0);
+	}
+	else {
+		std::cout << "created command pool for presentation queue family" << std::endl;
+	}
+
+	// Get number of swap chain images and create vector to hold command queue for each one
+	presentCommandBuffers.resize(swapChainImages.size());
+
+	// Allocate presentation command buffers
+	// Note: secondary command buffers are only for nesting in primary command buffers
+	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)swapChainImages.size();
+
+	if (vkAllocateCommandBuffers(device, &allocInfo, presentCommandBuffers.data()) != VK_SUCCESS) {
+		std::cerr << "failed to allocate presentation command buffers" << std::endl;
+		assert(0);
+	}
+	else {
+		std::cout << "allocated presentation command buffers" << std::endl;
+	}
+}
+
+void recordCommandBuffers()
+{
+	// Prepare data for recording command buffers
+	VkCommandBufferBeginInfo beginInfo = {};
+	beginInfo.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_BEGIN_INFO;
+	beginInfo.flags = VK_COMMAND_BUFFER_USAGE_SIMULTANEOUS_USE_BIT;
+
+	// Note: contains value for each subresource range
+	VkClearColorValue clearColor = {
+		{ 0.4f, 0.6f, 0.9f, 1.0f } // R, G, B, A
+	};
+	VkClearValue clearValue = {};
+	clearValue.color = clearColor;
+
+	VkImageSubresourceRange subResourceRange = {};
+	subResourceRange.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT;
+	subResourceRange.baseMipLevel = 0;
+	subResourceRange.levelCount = 1;
+	subResourceRange.baseArrayLayer = 0;
+	subResourceRange.layerCount = 1;
+
+	VkRenderPassBeginInfo renderPassInfo = {};
+	renderPassInfo.sType = VK_STRUCTURE_TYPE_RENDER_PASS_BEGIN_INFO;
+	renderPassInfo.renderPass = renderPass;
+	renderPassInfo.renderArea.offset.x = 0;
+	renderPassInfo.renderArea.offset.y = 0;
+	renderPassInfo.renderArea.extent.width = WINDOW_WIDTH;
+	renderPassInfo.renderArea.extent.height = WINDOW_HEIGHT;
+	renderPassInfo.clearValueCount = 1;
+	renderPassInfo.pClearValues = &clearValue;
+
+	VkViewport viewport = { 0 };
+	viewport.height = (float)WINDOW_HEIGHT;
+	viewport.width = (float)WINDOW_WIDTH;
+	viewport.minDepth = (float)0.0f;
+	viewport.maxDepth = (float)1.0f;
+
+	VkRect2D scissor = { 0 };
+	scissor.extent.width = WINDOW_WIDTH;
+	scissor.extent.height = WINDOW_HEIGHT;
+	scissor.offset.x = 0;
+	scissor.offset.y = 0;
+
+	// Record the command buffer for every swap chain image
+	for (uint32_t i = 0; i < swapChainImages.size(); i++) {
+		// Record command buffer
+		vkBeginCommandBuffer(presentCommandBuffers[i], &beginInfo);
+
+		renderPassInfo.framebuffer = fbs[i];
+
+		vkCmdBeginRenderPass(presentCommandBuffers[i], &renderPassInfo, VK_SUBPASS_CONTENTS_INLINE);
+
+		vkCmdBindPipeline(presentCommandBuffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipeline);
+
+		vkCmdSetViewport(presentCommandBuffers[i], 0, 1, &viewport);
+
+		vkCmdSetScissor(presentCommandBuffers[i], 0, 1, &scissor);
+
+		vkCmdDraw(presentCommandBuffers[i], 3, 1, 0, 0);
+
+		vkCmdEndRenderPass(presentCommandBuffers[i]);
+
+		if (vkEndCommandBuffer(presentCommandBuffers[i]) != VK_SUCCESS) {
+			std::cerr << "failed to record command buffer" << std::endl;
+			assert(0);
+		}
+		else {
+			std::cout << "recorded command buffer for image " << i << std::endl;
+		}
+	}
+}
+
+void draw() {
+	// Acquire image
+	uint32_t imageIndex;
+	VkResult res = vkAcquireNextImageKHR(device, swapChain, UINT64_MAX, imageAvailableSemaphore, VK_NULL_HANDLE, &imageIndex);
+
+	if (res != VK_SUCCESS && res != VK_SUBOPTIMAL_KHR) {
+		std::cerr << "failed to acquire image" << std::endl;
+		assert(0);
+	}
+
+	std::cout << "acquired image" << std::endl;
+
+	// Wait for image to be available and draw
+	VkSubmitInfo submitInfo = {};
+	submitInfo.sType = VK_STRUCTURE_TYPE_SUBMIT_INFO;
+
+	submitInfo.waitSemaphoreCount = 1;
+	submitInfo.pWaitSemaphores = &imageAvailableSemaphore;
+
+	submitInfo.signalSemaphoreCount = 1;
+	submitInfo.pSignalSemaphores = &renderingFinishedSemaphore;
+
+	submitInfo.commandBufferCount = 1;
+	submitInfo.pCommandBuffers = &presentCommandBuffers[imageIndex];
+
+	if (vkQueueSubmit(presentQueue, 1, &submitInfo, VK_NULL_HANDLE) != VK_SUCCESS) {
+		std::cerr << "failed to submit draw command buffer" << std::endl;
+		assert(0);
+	}
+
+	std::cout << "submitted draw command buffer" << std::endl;
+
+	// Present drawn image
+	// Note: semaphore here is not strictly necessary, because commands are processed in submission order within a single queue
+	VkPresentInfoKHR presentInfo = {};
+	presentInfo.sType = VK_STRUCTURE_TYPE_PRESENT_INFO_KHR;
+	presentInfo.waitSemaphoreCount = 1;
+	presentInfo.pWaitSemaphores = &renderingFinishedSemaphore;
+
+	presentInfo.swapchainCount = 1;
+	presentInfo.pSwapchains = &swapChain;
+	presentInfo.pImageIndices = &imageIndex;
+
+	res = vkQueuePresentKHR(presentQueue, &presentInfo);
+
+	if (res != VK_SUCCESS) {
+		std::cerr << "failed to submit present command buffer" << std::endl;
+		assert(0);
+	}
+
+	std::cout << "submitted presentation command buffer" << std::endl;
+}
+
+void CreateRenderPass()
+{
+	VkAttachmentReference attachRef = {};
+	attachRef.attachment = 0;
+	attachRef.layout = VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL;
+
+	VkSubpassDescription subpassDesc = {};
+	subpassDesc.pipelineBindPoint = VK_PIPELINE_BIND_POINT_GRAPHICS;
+	subpassDesc.colorAttachmentCount = 1;
+	subpassDesc.pColorAttachments = &attachRef;
+
+	VkAttachmentDescription attachDesc = {};
+	attachDesc.format = VkFormat::VK_FORMAT_R8G8B8A8_UNORM; //Todo
+	attachDesc.loadOp = VK_ATTACHMENT_LOAD_OP_CLEAR;
+	attachDesc.storeOp = VK_ATTACHMENT_STORE_OP_STORE;
+	attachDesc.stencilLoadOp = VK_ATTACHMENT_LOAD_OP_DONT_CARE;
+	attachDesc.stencilStoreOp = VK_ATTACHMENT_STORE_OP_DONT_CARE;
+	attachDesc.initialLayout = VK_IMAGE_LAYOUT_PRESENT_SRC_KHR;
+	attachDesc.finalLayout = VK_IMAGE_LAYOUT_PRESENT_SRC_KHR;
+
+	VkRenderPassCreateInfo renderPassCreateInfo = {};
+	renderPassCreateInfo.sType = VK_STRUCTURE_TYPE_RENDER_PASS_CREATE_INFO;
+	renderPassCreateInfo.attachmentCount = 1;
+	renderPassCreateInfo.pAttachments = &attachDesc;
+	renderPassCreateInfo.subpassCount = 1;
+	renderPassCreateInfo.pSubpasses = &subpassDesc;
+
+	VkResult res = vkCreateRenderPass(device, &renderPassCreateInfo, NULL, &renderPass);
+
+	printf("Created a render pass\n");
+}
+
+
+void CreateFramebuffer()
+{
+	fbs.resize(swapChainImages.size());
+
+	VkResult res;
+
+	for (uint32_t i = 0; i < swapChainImages.size(); i++) {
+		VkImageViewCreateInfo ViewCreateInfo = {};
+		ViewCreateInfo.sType = VK_STRUCTURE_TYPE_IMAGE_VIEW_CREATE_INFO;
+		ViewCreateInfo.image = swapChainImages[i];
+		ViewCreateInfo.format = VkFormat::VK_FORMAT_R8G8B8A8_UNORM; //Todo
+		ViewCreateInfo.viewType = VK_IMAGE_VIEW_TYPE_2D;
+		ViewCreateInfo.components.r = VK_COMPONENT_SWIZZLE_IDENTITY;
+		ViewCreateInfo.components.g = VK_COMPONENT_SWIZZLE_IDENTITY;
+		ViewCreateInfo.components.b = VK_COMPONENT_SWIZZLE_IDENTITY;
+		ViewCreateInfo.components.a = VK_COMPONENT_SWIZZLE_IDENTITY;
+		ViewCreateInfo.subresourceRange.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT;
+		ViewCreateInfo.subresourceRange.baseMipLevel = 0;
+		ViewCreateInfo.subresourceRange.levelCount = 1;
+		ViewCreateInfo.subresourceRange.baseArrayLayer = 0;
+		ViewCreateInfo.subresourceRange.layerCount = 1;
+
+		res = vkCreateImageView(device, &ViewCreateInfo, NULL, &views[i]);
+
+		VkFramebufferCreateInfo fbCreateInfo = {};
+		fbCreateInfo.sType = VK_STRUCTURE_TYPE_FRAMEBUFFER_CREATE_INFO;
+		fbCreateInfo.renderPass = renderPass;
+		fbCreateInfo.attachmentCount = 1;
+		fbCreateInfo.pAttachments = &views[i];
+		fbCreateInfo.width = WINDOW_WIDTH;
+		fbCreateInfo.height = WINDOW_HEIGHT;
+		fbCreateInfo.layers = 1;
+
+		res = vkCreateFramebuffer(device, &fbCreateInfo, NULL, &fbs[i]);
+	}
+
+	printf("Frame buffers created\n");
+}
+
+VkShaderModule VulkanCreateShaderModule(VkDevice& device, char* code)
+{
+	int codeSize = strlen(code);
+
+	VkShaderModuleCreateInfo shaderCreateInfo = {};
+	shaderCreateInfo.sType = VK_STRUCTURE_TYPE_SHADER_MODULE_CREATE_INFO;
+	shaderCreateInfo.codeSize = codeSize;
+	shaderCreateInfo.pCode = (const uint32_t*)code;
+
+	VkShaderModule shaderModule;
+	VkResult res = vkCreateShaderModule(device, &shaderCreateInfo, NULL, &shaderModule);
+	printf("Created shader\n");
+
+	return shaderModule;
+}
+
+void CreateShaders()
+{
+	char* vptr = (char*)malloc(strlen(vertShader) + 1);
+	memcpy(vptr, vertShader, strlen(vertShader) + 1);
+
+	char* fptr = (char*)malloc(strlen(fragShader) + 1);
+	memcpy(fptr, fragShader, strlen(fragShader) + 1);
+
+	vsModule = VulkanCreateShaderModule(device, vptr);
+	assert(vsModule);
+
+	fsModule = VulkanCreateShaderModule(device, fptr);
+	assert(fsModule);
+
+	free(vptr);
+	free(fptr);
+}
+
+
+#define VERTEX_BUFFER_BIND_ID 0
+
+void CreatePipeline()
+{
+	VkPipelineShaderStageCreateInfo shaderStageCreateInfo[2] = {};
+
+	shaderStageCreateInfo[0].sType = VK_STRUCTURE_TYPE_PIPELINE_SHADER_STAGE_CREATE_INFO;
+	shaderStageCreateInfo[0].stage = VK_SHADER_STAGE_VERTEX_BIT;
+	shaderStageCreateInfo[0].module = vsModule;
+	shaderStageCreateInfo[0].pName = "main";
+	shaderStageCreateInfo[1].sType = VK_STRUCTURE_TYPE_PIPELINE_SHADER_STAGE_CREATE_INFO;
+	shaderStageCreateInfo[1].stage = VK_SHADER_STAGE_FRAGMENT_BIT;
+	shaderStageCreateInfo[1].module = fsModule;
+	shaderStageCreateInfo[1].pName = "main";
+
+	VkPipelineVertexInputStateCreateInfo vertexInputInfo = {};
+	vertexInputInfo.sType = VK_STRUCTURE_TYPE_PIPELINE_VERTEX_INPUT_STATE_CREATE_INFO;
+
+	VkPipelineInputAssemblyStateCreateInfo pipelineIACreateInfo = {};
+	pipelineIACreateInfo.sType = VK_STRUCTURE_TYPE_PIPELINE_INPUT_ASSEMBLY_STATE_CREATE_INFO;
+	pipelineIACreateInfo.topology = VK_PRIMITIVE_TOPOLOGY_TRIANGLE_LIST;
+
+	VkViewport vp = {};
+	vp.x = 0.0f;
+	vp.y = 0.0f;
+	vp.width = (float)WINDOW_WIDTH;
+	vp.height = (float)WINDOW_HEIGHT;
+	vp.minDepth = 0.0f;
+	vp.maxDepth = 1.0f;
+
+	VkPipelineViewportStateCreateInfo vpCreateInfo = {};
+	vpCreateInfo.sType = VK_STRUCTURE_TYPE_PIPELINE_VIEWPORT_STATE_CREATE_INFO;
+	vpCreateInfo.viewportCount = 1;
+	vpCreateInfo.pViewports = &vp;
+
+	VkPipelineRasterizationStateCreateInfo rastCreateInfo = {};
+	rastCreateInfo.sType = VK_STRUCTURE_TYPE_PIPELINE_RASTERIZATION_STATE_CREATE_INFO;
+	rastCreateInfo.polygonMode = VK_POLYGON_MODE_FILL;
+	rastCreateInfo.cullMode = VK_CULL_MODE_BACK_BIT;
+	rastCreateInfo.frontFace = VK_FRONT_FACE_COUNTER_CLOCKWISE;
+	rastCreateInfo.lineWidth = 1.0f;
+
+	VkPipelineMultisampleStateCreateInfo pipelineMSCreateInfo = {};
+	pipelineMSCreateInfo.sType = VK_STRUCTURE_TYPE_PIPELINE_MULTISAMPLE_STATE_CREATE_INFO;
+
+	VkPipelineColorBlendAttachmentState blendAttachState = {};
+	blendAttachState.colorWriteMask = 0xf;
+
+	VkPipelineColorBlendStateCreateInfo blendCreateInfo = {};
+	blendCreateInfo.sType = VK_STRUCTURE_TYPE_PIPELINE_COLOR_BLEND_STATE_CREATE_INFO;
+	blendCreateInfo.logicOp = VK_LOGIC_OP_COPY;
+	blendCreateInfo.attachmentCount = 1;
+	blendCreateInfo.pAttachments = &blendAttachState;
+
+	VkGraphicsPipelineCreateInfo pipelineInfo = {};
+	pipelineInfo.sType = VK_STRUCTURE_TYPE_GRAPHICS_PIPELINE_CREATE_INFO;
+	pipelineInfo.stageCount = 2;
+	pipelineInfo.pStages = &shaderStageCreateInfo[0];
+	pipelineInfo.pVertexInputState = &vertexInputInfo;
+	pipelineInfo.pInputAssemblyState = &pipelineIACreateInfo;
+	pipelineInfo.pViewportState = &vpCreateInfo;
+	pipelineInfo.pRasterizationState = &rastCreateInfo;
+	pipelineInfo.pMultisampleState = &pipelineMSCreateInfo;
+	pipelineInfo.pColorBlendState = &blendCreateInfo;
+	pipelineInfo.renderPass = renderPass;
+	pipelineInfo.basePipelineIndex = -1;
+
+	VkResult res = vkCreateGraphicsPipelines(device, VK_NULL_HANDLE, 1, &pipelineInfo, NULL, &pipeline);
+
+	printf("Graphics pipeline created\n");
+}
+
+int main() {
+	// Note: dynamically loading loader may be a better idea to fail gracefully when Vulkan is not supported
+
+	// Create window for Vulkan
+	//glfwInit();
+
+	//glfwWindowHint(GLFW_CLIENT_API, GLFW_NO_API);
+	//glfwWindowHint(GLFW_RESIZABLE, GLFW_FALSE);
+
+	//window = glfwCreateWindow(WINDOW_WIDTH, WINDOW_HEIGHT, "The 630 line cornflower blue window", nullptr, nullptr);
+
+	// Use Vulkan
+	setupVulkan();
+
+	mainLoop();
+
+	cleanup();
+
+
+	return 0;
+}