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source: opengl-game/vulkan-ref.cpp@ 90a424f

feature/imgui-sdl points-test

Last change on this file since 90a424f was 90a424f, checked in by Dmitry Portnoy <dmitry.portnoy@…>, 5 years ago
In vulkangame, add code to create a Vulkan surface and pick a physical device
Property mode set to `100644`
File size: 80.4 KB

Rev	Line
[f00ee54]	1	#define STB_IMAGE_IMPLEMENTATION
	2	#include "stb_image.h" // TODO: Probably switch to SDL_image
[826df16]	3
	4	//#define _USE_MATH_DEFINES // Will be needed when/if I need to # include <cmath>
[03f4c64]	5
	6	#define GLM_FORCE_RADIANS
[fba08f2]	7	#define GLM_FORCE_DEPTH_ZERO_TO_ONE
[f00ee54]	8
[80edd70]	9	#include <glm/glm.hpp>
[de32fda]	10	#include <glm/gtc/matrix_transform.hpp>
[03f4c64]	11
	12	#include <iostream>
[80edd70]	13	#include <fstream>
	14	#include <algorithm>
	15	#include <vector>
	16	#include <array>
[0e6ecf3]	17	#include <set>
[80edd70]	18	#include <optional>
[de32fda]	19	#include <chrono>
[03f4c64]	20
[7fc5e27]	21	#include "consts.hpp"
[203ab1b]	22	#include "utils.hpp"
[03f4c64]	23
[f00ee54]	24	#include "game-gui-sdl.hpp"
	25
	26	using namespace std;
	27	using namespace glm;
[e1a7f5a]	28
[826df16]	29	const int SCREEN_WIDTH = 800;
	30	const int SCREEN_HEIGHT = 600;
	31
[47bff4c]	32	const int MAX_FRAMES_IN_FLIGHT = 2;
	33
[90a424f]	34	/* START OF REFACTORED CODE */
[826df16]	35	#ifdef NDEBUG
	36	const bool enableValidationLayers = false;
	37	#else
	38	const bool enableValidationLayers = true;
	39	#endif
	40
[bfd620e]	41	const vector<const char*> validationLayers = {
	42	"VK_LAYER_KHRONOS_validation"
	43	};
	44
	45	const vector<const char*> deviceExtensions = {
	46	VK_KHR_SWAPCHAIN_EXTENSION_NAME
	47	};
	48
[909b51a]	49	struct QueueFamilyIndices {
	50	optional<uint32_t> graphicsFamily;
[b3671b5]	51	optional<uint32_t> presentFamily;
[909b51a]	52
	53	bool isComplete() {
[b3671b5]	54	return graphicsFamily.has_value() && presentFamily.has_value();
[909b51a]	55	}
	56	};
	57
[bfd620e]	58	struct SwapChainSupportDetails {
	59	VkSurfaceCapabilitiesKHR capabilities;
	60	vector<VkSurfaceFormatKHR> formats;
	61	vector<VkPresentModeKHR> presentModes;
	62	};
[90a424f]	63	/* END OF REFACTORED CODE */
[bfd620e]	64
[80edd70]	65	struct Vertex {
[adcd252]	66	glm::vec3 pos;
[80edd70]	67	glm::vec3 color;
[fba08f2]	68	glm::vec2 texCoord;
[f00ee54]	69	};
[80edd70]	70
[f00ee54]	71	struct OverlayVertex {
	72	glm::vec3 pos;
	73	glm::vec2 texCoord;
[80edd70]	74	};
	75
[de32fda]	76	struct UniformBufferObject {
[f00ee54]	77	alignas(16) mat4 model;
	78	alignas(16) mat4 view;
	79	alignas(16) mat4 proj;
[de32fda]	80	};
	81
[721e8be]	82	struct DescriptorInfo {
	83	VkDescriptorType type;
	84	VkShaderStageFlags stageFlags;
	85
	86	vector<VkDescriptorBufferInfo>* bufferDataList;
	87	VkDescriptorImageInfo* imageData;
	88	};
	89
[b8b32bd]	90	struct GraphicsPipelineInfo {
[d22ae72]	91	VkPipelineLayout pipelineLayout;
[b8b32bd]	92	VkPipeline pipeline;
	93
[f00ee54]	94	VkVertexInputBindingDescription bindingDescription;
	95	vector<VkVertexInputAttributeDescription> attributeDescriptions;
	96
[721e8be]	97	vector<DescriptorInfo> descriptorInfoList;
	98
[d22ae72]	99	VkDescriptorPool descriptorPool;
	100	VkDescriptorSetLayout descriptorSetLayout;
	101	vector<VkDescriptorSet> descriptorSets;
	102
[f00ee54]	103	size_t numVertices; // Currently unused
[c8b0357]	104	VkBuffer vertexBuffer;
	105	VkDeviceMemory vertexBufferMemory;
	106
[f00ee54]	107	size_t numIndices;
[c8b0357]	108	VkBuffer indexBuffer;
	109	VkDeviceMemory indexBufferMemory;
[80edd70]	110	};
	111
[cabdd5c]	112	/* START OF REFACTORED CODE */
[b6127d2]	113	VkResult CreateDebugUtilsMessengerEXT(VkInstance instance,
	114	const VkDebugUtilsMessengerCreateInfoEXT* pCreateInfo,
	115	const VkAllocationCallbacks* pAllocator,
	116	VkDebugUtilsMessengerEXT* pDebugMessenger) {
[621664a]	117	auto func = (PFN_vkCreateDebugUtilsMessengerEXT) vkGetInstanceProcAddr(instance, "vkCreateDebugUtilsMessengerEXT");
[b6127d2]	118
	119	if (func != nullptr) {
	120	return func(instance, pCreateInfo, pAllocator, pDebugMessenger);
	121	} else {
	122	return VK_ERROR_EXTENSION_NOT_PRESENT;
	123	}
	124	}
	125
[80de39d]	126	void DestroyDebugUtilsMessengerEXT(VkInstance instance,
	127	VkDebugUtilsMessengerEXT debugMessenger,
	128	const VkAllocationCallbacks* pAllocator) {
[621664a]	129	auto func = (PFN_vkDestroyDebugUtilsMessengerEXT) vkGetInstanceProcAddr(instance, "vkDestroyDebugUtilsMessengerEXT");
[80de39d]	130
	131	if (func != nullptr) {
	132	func(instance, debugMessenger, pAllocator);
	133	}
	134	}
	135
[826df16]	136	class VulkanGame {
	137	public:
	138	void run() {
	139	if (initWindow() == RTWO_ERROR) {
	140	return;
	141	}
	142	initVulkan();
	143	mainLoop();
	144	cleanup();
	145	}
[621664a]	146
[826df16]	147	private:
[98f3232]	148	GameGui* gui = new GameGui_SDL();
[cabdd5c]	149
[c8c6da8]	150	SDL_version sdlVersion;
[80de39d]	151	SDL_Window* window = nullptr;
[5f3dba8]	152	SDL_Renderer* gRenderer = nullptr;
[cabdd5c]	153	/* END OF REFACTORED CODE */
[5f3dba8]	154	SDL_Texture* uiOverlay = nullptr;
	155
	156	TTF_Font* gFont = nullptr;
	157	SDL_Texture* uiText = nullptr;
	158	SDL_Texture* uiImage = nullptr;
	159
[cabdd5c]	160	/* START OF REFACTORED CODE */
[826df16]	161	VkInstance instance;
[b6127d2]	162	VkDebugUtilsMessengerEXT debugMessenger;
[b3671b5]	163	VkSurfaceKHR surface;
[5f3dba8]	164
[909b51a]	165	VkPhysicalDevice physicalDevice = VK_NULL_HANDLE;
[90a424f]	166	/* END OF REFACTORED CODE */
[909b51a]	167	VkDevice device;
[b3671b5]	168
[909b51a]	169	VkQueue graphicsQueue;
[b3671b5]	170	VkQueue presentQueue;
[826df16]	171
[bfd620e]	172	VkSwapchainKHR swapChain;
	173	vector<VkImage> swapChainImages;
	174	VkFormat swapChainImageFormat;
	175	VkExtent2D swapChainExtent;
	176	vector<VkImageView> swapChainImageViews;
[621664a]	177	vector<VkFramebuffer> swapChainFramebuffers;
	178
[be34c9a]	179	VkRenderPass renderPass;
[1187ef5]	180
[f5d5686]	181	VkCommandPool commandPool;
[1187ef5]	182	vector<VkCommandBuffer> commandBuffers;
	183
	184	// The images and the sampler are used to store data for specific attributes. I probably
	185	// want to keep them separate from the GraphicsPipelineInfo objects and start passing
	186	// references to them once I start defining uniform and varying attributes in GraphicsPipelineInfo objects
[f5d5686]	187
[adcd252]	188	VkImage depthImage;
	189	VkDeviceMemory depthImageMemory;
	190	VkImageView depthImageView;
	191
[f5d5686]	192	VkImage textureImage;
	193	VkDeviceMemory textureImageMemory;
[fba08f2]	194	VkImageView textureImageView;
[69dccfe]	195
	196	VkImage overlayImage;
	197	VkDeviceMemory overlayImageMemory;
	198	VkImageView overlayImageView;
	199
[e1a7f5a]	200	VkImage sdlOverlayImage;
	201	VkDeviceMemory sdlOverlayImageMemory;
	202	VkImageView sdlOverlayImageView;
	203
[fba08f2]	204	VkSampler textureSampler;
[f5d5686]	205
[1187ef5]	206	// These are currently to store the MVP matrix
	207	// I should figure out if it makes sense to use them for other uniforms in the future
	208	// If not, I should rename them to better indicate their puprose.
	209	// I should also decide if I can use these for all shaders, or if I need a separapte set of buffers for each one
[de32fda]	210	vector<VkBuffer> uniformBuffers;
	211	vector<VkDeviceMemory> uniformBuffersMemory;
	212
[721e8be]	213	VkDescriptorImageInfo sceneImageInfo;
	214	VkDescriptorImageInfo overlayImageInfo;
	215
	216	vector<VkDescriptorBufferInfo> uniformBufferInfoList;
	217
[1187ef5]	218	GraphicsPipelineInfo scenePipeline;
	219	GraphicsPipelineInfo overlayPipeline;
[47bff4c]	220
	221	vector<VkSemaphore> imageAvailableSemaphores;
	222	vector<VkSemaphore> renderFinishedSemaphores;
	223	vector<VkFence> inFlightFences;
	224
	225	size_t currentFrame = 0;
[ebeb3aa]	226
[75108ef]	227	bool framebufferResized = false;
	228
[cabdd5c]	229	/* START OF REFACTORED CODE */
[826df16]	230	bool initWindow() {
[7fc5e27]	231	if (gui->init() == RTWO_ERROR) {
[826df16]	232	cout << "UI library could not be initialized!" << endl;
[5f3dba8]	233	cout << SDL_GetError() << endl;
[826df16]	234	return RTWO_ERROR;
[5f3dba8]	235	}
	236	cout << "GUI init succeeded" << endl;
[826df16]	237
[7fc5e27]	238	window = (SDL_Window*) gui->createWindow("Vulkan Game", SCREEN_WIDTH, SCREEN_HEIGHT, false);
[5f3dba8]	239	if (window == nullptr) {
	240	cout << "Window could not be created!" << endl;
	241	return RTWO_ERROR;
	242	}
	243
	244	gRenderer = SDL_CreateRenderer(window, -1, SDL_RENDERER_ACCELERATED \| SDL_RENDERER_PRESENTVSYNC);
	245	if (gRenderer == nullptr) {
	246	cout << "Renderer could not be created! SDL Error: " << SDL_GetError() << endl;
	247	return RTWO_ERROR;
	248	}
[cabdd5c]	249	/* END OF REFACTORED CODE */
[5f3dba8]	250
[c8c6da8]	251	SDL_VERSION(&sdlVersion);
	252
	253	// In SDL 2.0.10 (currently, the latest), SDL_TEXTUREACCESS_TARGET is required to get a transparent overlay working
	254	// However, the latest SDL version available through homebrew on Mac is 2.0.9, which requires SDL_TEXTUREACCESS_STREAMING
	255	// I tried building sdl 2.0.10 (and sdl_image and sdl_ttf) from source on Mac, but had some issues, so this is easier
	256	// until the homebrew recipe is updated
	257	if (sdlVersion.major == 2 && sdlVersion.minor == 0 && sdlVersion.patch == 9) {
	258	uiOverlay = SDL_CreateTexture(gRenderer, SDL_PIXELFORMAT_RGBA8888, SDL_TEXTUREACCESS_STREAMING, SCREEN_WIDTH, SCREEN_HEIGHT);
	259	} else {
	260	uiOverlay = SDL_CreateTexture(gRenderer, SDL_PIXELFORMAT_RGBA8888, SDL_TEXTUREACCESS_TARGET, SCREEN_WIDTH, SCREEN_HEIGHT);
	261	}
	262
[5f3dba8]	263	if (uiOverlay == nullptr) {
	264	cout << "Unable to create blank texture! SDL Error: " << SDL_GetError() << endl;
	265	}
	266	if (SDL_SetTextureBlendMode(uiOverlay, SDL_BLENDMODE_BLEND) != 0) {
	267	cout << "Unable to set texture blend mode! SDL Error: " << SDL_GetError() << endl;
	268	}
	269
	270	gFont = TTF_OpenFont("fonts/lazy.ttf", 28);
	271	if (gFont == nullptr) {
	272	cout << "Failed to load lazy font! SDL_ttf Error: " << TTF_GetError() << endl;
	273	return RTWO_ERROR;
	274	}
	275
	276	SDL_Color textColor = { 0, 0, 0 };
	277
	278	SDL_Surface* textSurface = TTF_RenderText_Solid(gFont, "Great sucess!", textColor);
	279	if (textSurface == nullptr) {
	280	cout << "Unable to render text surface! SDL_ttf Error: " << TTF_GetError() << endl;
	281	return RTWO_ERROR;
	282	}
	283
	284	uiText = SDL_CreateTextureFromSurface(gRenderer, textSurface);
	285	if (uiText == nullptr) {
	286	cout << "Unable to create texture from rendered text! SDL Error: " << SDL_GetError() << endl;
	287	SDL_FreeSurface(textSurface);
	288	return RTWO_ERROR;
	289	}
	290
	291	SDL_FreeSurface(textSurface);
	292
	293	// TODO: Load a PNG instead
	294	SDL_Surface* uiImageSurface = SDL_LoadBMP("assets/images/spaceship.bmp");
	295	if (uiImageSurface == nullptr) {
	296	cout << "Unable to load image " << "spaceship.bmp" << "! SDL Error: " << SDL_GetError() << endl;
	297	return RTWO_ERROR;
[826df16]	298	}
[5f3dba8]	299
	300	uiImage = SDL_CreateTextureFromSurface(gRenderer, uiImageSurface);
	301	if (uiImage == nullptr) {
	302	cout << "Unable to create texture from BMP surface! SDL Error: " << SDL_GetError() << endl;
	303	SDL_FreeSurface(uiImageSurface);
	304	return RTWO_ERROR;
	305	}
	306
	307	SDL_FreeSurface(uiImageSurface);
	308
	309	return RTWO_SUCCESS;
[826df16]	310	}
	311
[cabdd5c]	312	/* START OF REFACTORED CODE */
[826df16]	313	void initVulkan() {
	314	createInstance();
[7dcd925]	315	setupDebugMessenger();
[b3671b5]	316	createSurface();
[909b51a]	317	pickPhysicalDevice();
[90a424f]	318	/* END OF REFACTORED CODE */
[909b51a]	319	createLogicalDevice();
[bfd620e]	320	createSwapChain();
	321	createImageViews();
[be34c9a]	322	createRenderPass();
[d22ae72]	323
[47bff4c]	324	createCommandPool();
[1187ef5]	325
[69dccfe]	326	createImageResources("textures/texture.jpg", textureImage, textureImageMemory, textureImageView);
[e1a7f5a]	327	createImageResourcesFromSDLTexture(uiOverlay, sdlOverlayImage, sdlOverlayImageMemory, sdlOverlayImageView);
[fba08f2]	328	createTextureSampler();
[c8b0357]	329
[721e8be]	330	sceneImageInfo = {};
	331	sceneImageInfo.imageLayout = VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL;
	332	sceneImageInfo.imageView = textureImageView;
	333	sceneImageInfo.sampler = textureSampler;
	334
	335	overlayImageInfo = {};
	336	overlayImageInfo.imageLayout = VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL;
	337	overlayImageInfo.imageView = sdlOverlayImageView;
	338	overlayImageInfo.sampler = textureSampler;
	339
[f00ee54]	340	vector<Vertex> sceneVertices = {
[c8b0357]	341	{{-0.5f, -0.5f, -0.5f}, {1.0f, 0.0f, 0.0f}, {0.0f, 1.0f}},
	342	{{ 0.5f, -0.5f, -0.5f}, {0.0f, 1.0f, 0.0f}, {1.0f, 1.0f}},
	343	{{ 0.5f, 0.5f, -0.5f}, {0.0f, 0.0f, 1.0f}, {1.0f, 0.0f}},
	344	{{-0.5f, 0.5f, -0.5f}, {1.0f, 1.0f, 1.0f}, {0.0f, 0.0f}},
	345
	346	{{-0.5f, -0.5f, 0.0f}, {1.0f, 0.0f, 0.0f}, {0.0f, 1.0f}},
	347	{{ 0.5f, -0.5f, 0.0f}, {0.0f, 1.0f, 0.0f}, {1.0f, 1.0f}},
	348	{{ 0.5f, 0.5f, 0.0f}, {0.0f, 0.0f, 1.0f}, {1.0f, 0.0f}},
	349	{{-0.5f, 0.5f, 0.0f}, {1.0f, 1.0f, 1.0f}, {0.0f, 0.0f}}
[f00ee54]	350	};
	351	vector<uint16_t> sceneIndices = {
[e5d4aca]	352	0, 1, 2, 2, 3, 0,
	353	4, 5, 6, 6, 7, 4
[f00ee54]	354	};
	355
	356	initGraphicsPipelineInfo(scenePipeline,
	357	sceneVertices.data(), sizeof(Vertex), sceneVertices.size(),
	358	sceneIndices.data(), sizeof(uint16_t), sceneIndices.size());
	359
	360	addAttributeDescription(scenePipeline, VK_FORMAT_R32G32B32_SFLOAT, offset_of(&Vertex::pos));
	361	addAttributeDescription(scenePipeline, VK_FORMAT_R32G32B32_SFLOAT, offset_of(&Vertex::color));
	362	addAttributeDescription(scenePipeline, VK_FORMAT_R32G32_SFLOAT, offset_of(&Vertex::texCoord));
	363
[721e8be]	364	addDescriptorInfo(scenePipeline, VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, VK_SHADER_STAGE_VERTEX_BIT, &uniformBufferInfoList, nullptr);
	365	addDescriptorInfo(scenePipeline, VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, VK_SHADER_STAGE_FRAGMENT_BIT, nullptr, &sceneImageInfo);
	366
	367	createDescriptorSetLayout(scenePipeline);
[c8b0357]	368
[f00ee54]	369
	370	vector<OverlayVertex> overlayVertices = {
	371	{{-1.0f, 1.0f, 0.0f}, {0.0f, 1.0f}},
	372	{{ 1.0f, 1.0f, 0.0f}, {1.0f, 1.0f}},
	373	{{ 1.0f, -1.0f, 0.0f}, {1.0f, 0.0f}},
	374	{{-1.0f, -1.0f, 0.0f}, {0.0f, 0.0f}}
	375	};
	376	vector<uint16_t> overlayIndices = {
	377	0, 1, 2, 2, 3, 0
	378	};
	379
	380	initGraphicsPipelineInfo(overlayPipeline,
	381	overlayVertices.data(), sizeof(OverlayVertex), overlayVertices.size(),
	382	overlayIndices.data(), sizeof(uint16_t), overlayIndices.size());
	383
	384	addAttributeDescription(overlayPipeline, VK_FORMAT_R32G32B32_SFLOAT, offset_of(&OverlayVertex::pos));
	385	addAttributeDescription(overlayPipeline, VK_FORMAT_R32G32_SFLOAT, offset_of(&OverlayVertex::texCoord));
	386
[721e8be]	387	addDescriptorInfo(overlayPipeline, VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, VK_SHADER_STAGE_FRAGMENT_BIT, nullptr, &overlayImageInfo);
	388
	389	createDescriptorSetLayout(overlayPipeline);
[c8b0357]	390
[e5d4aca]	391	createBufferResources();
[d22ae72]	392
[47bff4c]	393	createSyncObjects();
[826df16]	394	}
	395
	396	void createInstance() {
[b6127d2]	397	if (enableValidationLayers && !checkValidationLayerSupport()) {
	398	throw runtime_error("validation layers requested, but not available!");
	399	}
	400
[826df16]	401	VkApplicationInfo appInfo = {};
	402	appInfo.sType = VK_STRUCTURE_TYPE_APPLICATION_INFO;
	403	appInfo.pApplicationName = "Vulkan Game";
	404	appInfo.applicationVersion = VK_MAKE_VERSION(1, 0, 0);
	405	appInfo.pEngineName = "No Engine";
	406	appInfo.engineVersion = VK_MAKE_VERSION(1, 0, 0);
	407	appInfo.apiVersion = VK_API_VERSION_1_0;
	408
	409	VkInstanceCreateInfo createInfo = {};
	410	createInfo.sType = VK_STRUCTURE_TYPE_INSTANCE_CREATE_INFO;
	411	createInfo.pApplicationInfo = &appInfo;
	412
[a8f0577]	413	vector<const char*> extensions = getRequiredExtensions();
[b6127d2]	414	createInfo.enabledExtensionCount = static_cast<uint32_t>(extensions.size());
	415	createInfo.ppEnabledExtensionNames = extensions.data();
[826df16]	416
[8667f76]	417	cout << endl << "Extensions:" << endl;
[b3671b5]	418	for (const char* extensionName : extensions) {
	419	cout << extensionName << endl;
	420	}
	421	cout << endl;
	422
[80de39d]	423	VkDebugUtilsMessengerCreateInfoEXT debugCreateInfo;
[b6127d2]	424	if (enableValidationLayers) {
	425	createInfo.enabledLayerCount = static_cast<uint32_t>(validationLayers.size());
	426	createInfo.ppEnabledLayerNames = validationLayers.data();
[80de39d]	427
	428	populateDebugMessengerCreateInfo(debugCreateInfo);
	429	createInfo.pNext = &debugCreateInfo;
[b6127d2]	430	} else {
	431	createInfo.enabledLayerCount = 0;
[80de39d]	432
	433	createInfo.pNext = nullptr;
[b6127d2]	434	}
[826df16]	435
	436	if (vkCreateInstance(&createInfo, nullptr, &instance) != VK_SUCCESS) {
	437	throw runtime_error("failed to create instance!");
	438	}
	439	}
	440
[621664a]	441	bool checkValidationLayerSupport() {
	442	uint32_t layerCount;
	443	vkEnumerateInstanceLayerProperties(&layerCount, nullptr);
	444
	445	vector<VkLayerProperties> availableLayers(layerCount);
	446	vkEnumerateInstanceLayerProperties(&layerCount, availableLayers.data());
	447
	448	for (const char* layerName : validationLayers) {
	449	bool layerFound = false;
	450
	451	for (const auto& layerProperties : availableLayers) {
	452	if (strcmp(layerName, layerProperties.layerName) == 0) {
	453	layerFound = true;
	454	break;
	455	}
	456	}
	457
	458	if (!layerFound) {
	459	return false;
	460	}
	461	}
	462
	463	return true;
	464	}
	465
[cabdd5c]	466	/* START OF REFACTORED CODE */
[621664a]	467	vector<const char*> getRequiredExtensions() {
[7fc5e27]	468	vector<const char*> extensions = gui->getRequiredExtensions();
[621664a]	469
	470	if (enableValidationLayers) {
	471	extensions.push_back(VK_EXT_DEBUG_UTILS_EXTENSION_NAME);
	472	}
	473
	474	return extensions;
	475	}
	476
[80de39d]	477	void setupDebugMessenger() {
	478	if (!enableValidationLayers) return;
	479
	480	VkDebugUtilsMessengerCreateInfoEXT createInfo;
	481	populateDebugMessengerCreateInfo(createInfo);
[b6127d2]	482
	483	if (CreateDebugUtilsMessengerEXT(instance, &createInfo, nullptr, &debugMessenger) != VK_SUCCESS) {
[621664a]	484	throw runtime_error("failed to set up debug messenger!");
[b6127d2]	485	}
	486	}
	487
[621664a]	488	void populateDebugMessengerCreateInfo(VkDebugUtilsMessengerCreateInfoEXT& createInfo) {
	489	createInfo = {};
	490	createInfo.sType = VK_STRUCTURE_TYPE_DEBUG_UTILS_MESSENGER_CREATE_INFO_EXT;
	491	createInfo.messageSeverity = VK_DEBUG_UTILS_MESSAGE_SEVERITY_VERBOSE_BIT_EXT \| VK_DEBUG_UTILS_MESSAGE_SEVERITY_WARNING_BIT_EXT \| VK_DEBUG_UTILS_MESSAGE_SEVERITY_ERROR_BIT_EXT;
	492	createInfo.messageType = VK_DEBUG_UTILS_MESSAGE_TYPE_GENERAL_BIT_EXT \| VK_DEBUG_UTILS_MESSAGE_TYPE_VALIDATION_BIT_EXT \| VK_DEBUG_UTILS_MESSAGE_TYPE_PERFORMANCE_BIT_EXT;
	493	createInfo.pfnUserCallback = debugCallback;
	494	}
	495
[b3671b5]	496	void createSurface() {
[7fc5e27]	497	if (gui->createVulkanSurface(instance, &surface) == RTWO_ERROR) {
[b3671b5]	498	throw runtime_error("failed to create window surface!");
	499	}
	500	}
	501
[909b51a]	502	void pickPhysicalDevice() {
	503	uint32_t deviceCount = 0;
	504	vkEnumeratePhysicalDevices(instance, &deviceCount, nullptr);
	505
	506	if (deviceCount == 0) {
	507	throw runtime_error("failed to find GPUs with Vulkan support!");
	508	}
	509
	510	vector<VkPhysicalDevice> devices(deviceCount);
	511	vkEnumeratePhysicalDevices(instance, &deviceCount, devices.data());
	512
	513	cout << endl << "Graphics cards:" << endl;
	514	for (const VkPhysicalDevice& device : devices) {
	515	if (isDeviceSuitable(device)) {
	516	physicalDevice = device;
	517	break;
	518	}
	519	}
	520	cout << endl;
	521
	522	if (physicalDevice == VK_NULL_HANDLE) {
	523	throw runtime_error("failed to find a suitable GPU!");
	524	}
	525	}
	526
	527	bool isDeviceSuitable(VkPhysicalDevice device) {
	528	VkPhysicalDeviceProperties deviceProperties;
	529	vkGetPhysicalDeviceProperties(device, &deviceProperties);
	530
	531	cout << "Device: " << deviceProperties.deviceName << endl;
	532
	533	QueueFamilyIndices indices = findQueueFamilies(device);
[bfd620e]	534	bool extensionsSupported = checkDeviceExtensionSupport(device);
	535	bool swapChainAdequate = false;
	536
	537	if (extensionsSupported) {
	538	SwapChainSupportDetails swapChainSupport = querySwapChainSupport(device);
	539	swapChainAdequate = !swapChainSupport.formats.empty() && !swapChainSupport.presentModes.empty();
	540	}
	541
[fba08f2]	542	VkPhysicalDeviceFeatures supportedFeatures;
	543	vkGetPhysicalDeviceFeatures(device, &supportedFeatures);
	544
	545	return indices.isComplete() && extensionsSupported && swapChainAdequate && supportedFeatures.samplerAnisotropy;
[bfd620e]	546	}
	547
	548	bool checkDeviceExtensionSupport(VkPhysicalDevice device) {
	549	uint32_t extensionCount;
	550	vkEnumerateDeviceExtensionProperties(device, nullptr, &extensionCount, nullptr);
	551
	552	vector<VkExtensionProperties> availableExtensions(extensionCount);
	553	vkEnumerateDeviceExtensionProperties(device, nullptr, &extensionCount, availableExtensions.data());
	554
	555	set<string> requiredExtensions(deviceExtensions.begin(), deviceExtensions.end());
	556
	557	for (const auto& extension : availableExtensions) {
	558	requiredExtensions.erase(extension.extensionName);
	559	}
	560
	561	return requiredExtensions.empty();
[909b51a]	562	}
[90a424f]	563	/* END OF REFACTORED CODE */
[909b51a]	564
	565	void createLogicalDevice() {
	566	QueueFamilyIndices indices = findQueueFamilies(physicalDevice);
	567
[b3671b5]	568	vector<VkDeviceQueueCreateInfo> queueCreateInfos;
	569	set<uint32_t> uniqueQueueFamilies = {indices.graphicsFamily.value(), indices.presentFamily.value()};
[909b51a]	570
	571	float queuePriority = 1.0f;
[b3671b5]	572	for (uint32_t queueFamily : uniqueQueueFamilies) {
	573	VkDeviceQueueCreateInfo queueCreateInfo = {};
	574	queueCreateInfo.sType = VK_STRUCTURE_TYPE_DEVICE_QUEUE_CREATE_INFO;
	575	queueCreateInfo.queueFamilyIndex = queueFamily;
	576	queueCreateInfo.queueCount = 1;
	577	queueCreateInfo.pQueuePriorities = &queuePriority;
	578
	579	queueCreateInfos.push_back(queueCreateInfo);
	580	}
[909b51a]	581
	582	VkPhysicalDeviceFeatures deviceFeatures = {};
[fba08f2]	583	deviceFeatures.samplerAnisotropy = VK_TRUE;
[909b51a]	584
	585	VkDeviceCreateInfo createInfo = {};
	586	createInfo.sType = VK_STRUCTURE_TYPE_DEVICE_CREATE_INFO;
[621664a]	587	createInfo.queueCreateInfoCount = static_cast<uint32_t>(queueCreateInfos.size());
[b3671b5]	588	createInfo.pQueueCreateInfos = queueCreateInfos.data();
[909b51a]	589
	590	createInfo.pEnabledFeatures = &deviceFeatures;
	591
[bfd620e]	592	createInfo.enabledExtensionCount = static_cast<uint32_t>(deviceExtensions.size());
	593	createInfo.ppEnabledExtensionNames = deviceExtensions.data();
[909b51a]	594
	595	// These fields are ignored by up-to-date Vulkan implementations,
	596	// but it's a good idea to set them for backwards compatibility
	597	if (enableValidationLayers) {
	598	createInfo.enabledLayerCount = static_cast<uint32_t>(validationLayers.size());
	599	createInfo.ppEnabledLayerNames = validationLayers.data();
	600	} else {
	601	createInfo.enabledLayerCount = 0;
	602	}
	603
	604	if (vkCreateDevice(physicalDevice, &createInfo, nullptr, &device) != VK_SUCCESS) {
	605	throw runtime_error("failed to create logical device!");
	606	}
	607
	608	vkGetDeviceQueue(device, indices.graphicsFamily.value(), 0, &graphicsQueue);
[b3671b5]	609	vkGetDeviceQueue(device, indices.presentFamily.value(), 0, &presentQueue);
[909b51a]	610	}
	611
[621664a]	612	void createSwapChain() {
	613	SwapChainSupportDetails swapChainSupport = querySwapChainSupport(physicalDevice);
[a8f0577]	614
[621664a]	615	VkSurfaceFormatKHR surfaceFormat = chooseSwapSurfaceFormat(swapChainSupport.formats);
	616	VkPresentModeKHR presentMode = chooseSwapPresentMode(swapChainSupport.presentModes);
	617	VkExtent2D extent = chooseSwapExtent(swapChainSupport.capabilities);
[a8f0577]	618
[621664a]	619	uint32_t imageCount = swapChainSupport.capabilities.minImageCount + 1;
	620	if (swapChainSupport.capabilities.maxImageCount > 0 && imageCount > swapChainSupport.capabilities.maxImageCount) {
	621	imageCount = swapChainSupport.capabilities.maxImageCount;
[a8f0577]	622	}
	623
[621664a]	624	VkSwapchainCreateInfoKHR createInfo = {};
	625	createInfo.sType = VK_STRUCTURE_TYPE_SWAPCHAIN_CREATE_INFO_KHR;
	626	createInfo.surface = surface;
	627	createInfo.minImageCount = imageCount;
	628	createInfo.imageFormat = surfaceFormat.format;
	629	createInfo.imageColorSpace = surfaceFormat.colorSpace;
	630	createInfo.imageExtent = extent;
	631	createInfo.imageArrayLayers = 1;
	632	createInfo.imageUsage = VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT;
[909b51a]	633
[621664a]	634	QueueFamilyIndices indices = findQueueFamilies(physicalDevice);
	635	uint32_t queueFamilyIndices[] = {indices.graphicsFamily.value(), indices.presentFamily.value()};
[b3671b5]	636
[621664a]	637	if (indices.graphicsFamily != indices.presentFamily) {
	638	createInfo.imageSharingMode = VK_SHARING_MODE_CONCURRENT;
	639	createInfo.queueFamilyIndexCount = 2;
	640	createInfo.pQueueFamilyIndices = queueFamilyIndices;
	641	} else {
	642	createInfo.imageSharingMode = VK_SHARING_MODE_EXCLUSIVE;
	643	createInfo.queueFamilyIndexCount = 0;
	644	createInfo.pQueueFamilyIndices = nullptr;
	645	}
[b3671b5]	646
[621664a]	647	createInfo.preTransform = swapChainSupport.capabilities.currentTransform;
	648	createInfo.compositeAlpha = VK_COMPOSITE_ALPHA_OPAQUE_BIT_KHR;
	649	createInfo.presentMode = presentMode;
	650	createInfo.clipped = VK_TRUE;
	651	createInfo.oldSwapchain = VK_NULL_HANDLE;
[909b51a]	652
[621664a]	653	if (vkCreateSwapchainKHR(device, &createInfo, nullptr, &swapChain) != VK_SUCCESS) {
	654	throw runtime_error("failed to create swap chain!");
[909b51a]	655	}
	656
[621664a]	657	vkGetSwapchainImagesKHR(device, swapChain, &imageCount, nullptr);
	658	swapChainImages.resize(imageCount);
	659	vkGetSwapchainImagesKHR(device, swapChain, &imageCount, swapChainImages.data());
	660
	661	swapChainImageFormat = surfaceFormat.format;
	662	swapChainExtent = extent;
[909b51a]	663	}
	664
[90a424f]	665	/* START OF REFACTORED CODE */
[bfd620e]	666	SwapChainSupportDetails querySwapChainSupport(VkPhysicalDevice device) {
	667	SwapChainSupportDetails details;
	668
	669	vkGetPhysicalDeviceSurfaceCapabilitiesKHR(device, surface, &details.capabilities);
	670
	671	uint32_t formatCount;
	672	vkGetPhysicalDeviceSurfaceFormatsKHR(device, surface, &formatCount, nullptr);
	673
	674	if (formatCount != 0) {
	675	details.formats.resize(formatCount);
	676	vkGetPhysicalDeviceSurfaceFormatsKHR(device, surface, &formatCount, details.formats.data());
	677	}
	678
	679	uint32_t presentModeCount;
	680	vkGetPhysicalDeviceSurfacePresentModesKHR(device, surface, &presentModeCount, nullptr);
	681
	682	if (presentModeCount != 0) {
	683	details.presentModes.resize(presentModeCount);
	684	vkGetPhysicalDeviceSurfacePresentModesKHR(device, surface, &presentModeCount, details.presentModes.data());
	685	}
	686
	687	return details;
	688	}
[90a424f]	689	/* END OF REFACTORED CODE */
[bfd620e]	690
	691	VkSurfaceFormatKHR chooseSwapSurfaceFormat(const vector<VkSurfaceFormatKHR>& availableFormats) {
	692	for (const auto& availableFormat : availableFormats) {
	693	if (availableFormat.format == VK_FORMAT_B8G8R8A8_UNORM && availableFormat.colorSpace == VK_COLOR_SPACE_SRGB_NONLINEAR_KHR) {
	694	return availableFormat;
	695	}
	696	}
	697
	698	return availableFormats[0];
	699	}
	700
	701	VkPresentModeKHR chooseSwapPresentMode(const vector<VkPresentModeKHR>& availablePresentModes) {
	702	VkPresentModeKHR bestMode = VK_PRESENT_MODE_FIFO_KHR;
	703
	704	for (const auto& availablePresentMode : availablePresentModes) {
	705	if (availablePresentMode == VK_PRESENT_MODE_MAILBOX_KHR) {
	706	return availablePresentMode;
[621664a]	707	}
	708	else if (availablePresentMode == VK_PRESENT_MODE_IMMEDIATE_KHR) {
[bfd620e]	709	bestMode = availablePresentMode;
	710	}
	711	}
	712
	713	return bestMode;
	714	}
	715
	716	VkExtent2D chooseSwapExtent(const VkSurfaceCapabilitiesKHR& capabilities) {
	717	if (capabilities.currentExtent.width != numeric_limits<uint32_t>::max()) {
	718	return capabilities.currentExtent;
[cabdd5c]	719	} else {
[75108ef]	720	VkExtent2D actualExtent = {
[cabdd5c]	721	static_cast<uint32_t>(gui->getWindowWidth()),
	722	static_cast<uint32_t>(gui->getWindowHeight())
[75108ef]	723	};
[bfd620e]	724
[f00ee54]	725	actualExtent.width = std::max(capabilities.minImageExtent.width, std::min(capabilities.maxImageExtent.width, actualExtent.width));
	726	actualExtent.height = std::max(capabilities.minImageExtent.height, std::min(capabilities.maxImageExtent.height, actualExtent.height));
[bfd620e]	727
	728	return actualExtent;
	729	}
	730	}
	731
	732	void createImageViews() {
	733	swapChainImageViews.resize(swapChainImages.size());
	734
[621664a]	735	for (size_t i = 0; i < swapChainImages.size(); i++) {
[adcd252]	736	swapChainImageViews[i] = createImageView(swapChainImages[i], swapChainImageFormat, VK_IMAGE_ASPECT_COLOR_BIT);
[bfd620e]	737	}
	738	}
	739
[be34c9a]	740	void createRenderPass() {
	741	VkAttachmentDescription colorAttachment = {};
	742	colorAttachment.format = swapChainImageFormat;
	743	colorAttachment.samples = VK_SAMPLE_COUNT_1_BIT;
	744	colorAttachment.loadOp = VK_ATTACHMENT_LOAD_OP_CLEAR;
	745	colorAttachment.storeOp = VK_ATTACHMENT_STORE_OP_STORE;
	746	colorAttachment.stencilLoadOp = VK_ATTACHMENT_LOAD_OP_DONT_CARE;
	747	colorAttachment.stencilStoreOp = VK_ATTACHMENT_STORE_OP_DONT_CARE;
	748	colorAttachment.initialLayout = VK_IMAGE_LAYOUT_UNDEFINED;
	749	colorAttachment.finalLayout = VK_IMAGE_LAYOUT_PRESENT_SRC_KHR;
	750
	751	VkAttachmentReference colorAttachmentRef = {};
	752	colorAttachmentRef.attachment = 0;
	753	colorAttachmentRef.layout = VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL;
	754
[adcd252]	755	VkAttachmentDescription depthAttachment = {};
	756	depthAttachment.format = findDepthFormat();
	757	depthAttachment.samples = VK_SAMPLE_COUNT_1_BIT;
	758	depthAttachment.loadOp = VK_ATTACHMENT_LOAD_OP_CLEAR;
	759	depthAttachment.storeOp = VK_ATTACHMENT_STORE_OP_DONT_CARE;
	760	depthAttachment.stencilLoadOp = VK_ATTACHMENT_LOAD_OP_DONT_CARE;
	761	depthAttachment.stencilStoreOp = VK_ATTACHMENT_STORE_OP_DONT_CARE;
	762	depthAttachment.initialLayout = VK_IMAGE_LAYOUT_UNDEFINED;
	763	depthAttachment.finalLayout = VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL;
	764
	765	VkAttachmentReference depthAttachmentRef = {};
	766	depthAttachmentRef.attachment = 1;
	767	depthAttachmentRef.layout = VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL;
	768
[be34c9a]	769	VkSubpassDescription subpass = {};
	770	subpass.pipelineBindPoint = VK_PIPELINE_BIND_POINT_GRAPHICS;
	771	subpass.colorAttachmentCount = 1;
	772	subpass.pColorAttachments = &colorAttachmentRef;
[adcd252]	773	subpass.pDepthStencilAttachment = &depthAttachmentRef;
[be34c9a]	774
[621664a]	775	VkSubpassDependency dependency = {};
[47bff4c]	776	dependency.srcSubpass = VK_SUBPASS_EXTERNAL;
	777	dependency.dstSubpass = 0;
	778	dependency.srcStageMask = VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT;
	779	dependency.srcAccessMask = 0;
	780	dependency.dstStageMask = VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT;
	781	dependency.dstAccessMask = VK_ACCESS_COLOR_ATTACHMENT_READ_BIT \| VK_ACCESS_COLOR_ATTACHMENT_WRITE_BIT;
	782
[adcd252]	783	array<VkAttachmentDescription, 2> attachments = { colorAttachment, depthAttachment };
[be34c9a]	784	VkRenderPassCreateInfo renderPassInfo = {};
	785	renderPassInfo.sType = VK_STRUCTURE_TYPE_RENDER_PASS_CREATE_INFO;
[adcd252]	786	renderPassInfo.attachmentCount = static_cast<uint32_t>(attachments.size());
	787	renderPassInfo.pAttachments = attachments.data();
[be34c9a]	788	renderPassInfo.subpassCount = 1;
	789	renderPassInfo.pSubpasses = &subpass;
[47bff4c]	790	renderPassInfo.dependencyCount = 1;
	791	renderPassInfo.pDependencies = &dependency;
[be34c9a]	792
	793	if (vkCreateRenderPass(device, &renderPassInfo, nullptr, &renderPass) != VK_SUCCESS) {
	794	throw runtime_error("failed to create render pass!");
	795	}
	796	}
	797
[f00ee54]	798	void initGraphicsPipelineInfo(GraphicsPipelineInfo& info,
	799	const void* vertexData, int vertexSize, size_t numVertices,
	800	const void* indexData, int indexSize, size_t numIndices) {
	801	// Since there is only one array of vertex data, we use binding = 0
	802	// I'll probably do that for the foreseeable future
	803	// I can calculate the stride myself given info about all the varying attributes
	804
	805	info.bindingDescription.binding = 0;
	806	info.bindingDescription.stride = vertexSize;
	807	info.bindingDescription.inputRate = VK_VERTEX_INPUT_RATE_VERTEX;
	808
	809	info.numVertices = numVertices;
	810	createVertexBuffer(info, vertexData, vertexSize * numVertices);
	811
	812	info.numIndices = numIndices;
	813	createIndexBuffer(info, indexData, indexSize * numIndices);
	814	}
	815
	816	void addAttributeDescription(GraphicsPipelineInfo& info, VkFormat format, size_t offset) {
	817	VkVertexInputAttributeDescription attributeDesc = {};
	818
	819	attributeDesc.binding = 0;
	820	attributeDesc.location = info.attributeDescriptions.size();
	821	attributeDesc.format = format;
	822	attributeDesc.offset = offset;
	823
	824	info.attributeDescriptions.push_back(attributeDesc);
	825	}
	826
[721e8be]	827	void addDescriptorInfo(GraphicsPipelineInfo& info, VkDescriptorType type, VkShaderStageFlags stageFlags, vector<VkDescriptorBufferInfo>* bufferData, VkDescriptorImageInfo* imageData) {
	828	info.descriptorInfoList.push_back({ type, stageFlags, bufferData, imageData });
	829	}
	830
	831	void createDescriptorSetLayout(GraphicsPipelineInfo& info) {
	832	vector<VkDescriptorSetLayoutBinding> bindings(info.descriptorInfoList.size());
	833
	834	for (size_t i = 0; i < bindings.size(); i++) {
	835	bindings[i].binding = i;
	836	bindings[i].descriptorCount = 1;
	837	bindings[i].descriptorType = info.descriptorInfoList[i].type;
	838	bindings[i].stageFlags = info.descriptorInfoList[i].stageFlags;
	839	bindings[i].pImmutableSamplers = nullptr;
	840	}
	841
	842	VkDescriptorSetLayoutCreateInfo layoutInfo = {};
	843	layoutInfo.sType = VK_STRUCTURE_TYPE_DESCRIPTOR_SET_LAYOUT_CREATE_INFO;
	844	layoutInfo.bindingCount = static_cast<uint32_t>(bindings.size());
	845	layoutInfo.pBindings = bindings.data();
	846
	847	if (vkCreateDescriptorSetLayout(device, &layoutInfo, nullptr, &info.descriptorSetLayout) != VK_SUCCESS) {
	848	throw runtime_error("failed to create descriptor set layout!");
	849	}
	850	}
	851
[d22ae72]	852	void createGraphicsPipeline(string vertShaderFile, string fragShaderFile, GraphicsPipelineInfo& info) {
[b8b32bd]	853	auto vertShaderCode = readFile(vertShaderFile);
	854	auto fragShaderCode = readFile(fragShaderFile);
[e09ad38]	855
	856	VkShaderModule vertShaderModule = createShaderModule(vertShaderCode);
	857	VkShaderModule fragShaderModule = createShaderModule(fragShaderCode);
	858
	859	VkPipelineShaderStageCreateInfo vertShaderStageInfo = {};
	860	vertShaderStageInfo.sType = VK_STRUCTURE_TYPE_PIPELINE_SHADER_STAGE_CREATE_INFO;
	861	vertShaderStageInfo.stage = VK_SHADER_STAGE_VERTEX_BIT;
	862	vertShaderStageInfo.module = vertShaderModule;
	863	vertShaderStageInfo.pName = "main";
	864
	865	VkPipelineShaderStageCreateInfo fragShaderStageInfo = {};
	866	fragShaderStageInfo.sType = VK_STRUCTURE_TYPE_PIPELINE_SHADER_STAGE_CREATE_INFO;
	867	fragShaderStageInfo.stage = VK_SHADER_STAGE_FRAGMENT_BIT;
	868	fragShaderStageInfo.module = fragShaderModule;
	869	fragShaderStageInfo.pName = "main";
	870
	871	VkPipelineShaderStageCreateInfo shaderStages[] = { vertShaderStageInfo, fragShaderStageInfo };
	872
[84216c7]	873	VkPipelineVertexInputStateCreateInfo vertexInputInfo = {};
	874	vertexInputInfo.sType = VK_STRUCTURE_TYPE_PIPELINE_VERTEX_INPUT_STATE_CREATE_INFO;
[80edd70]	875
	876	vertexInputInfo.vertexBindingDescriptionCount = 1;
[f00ee54]	877	vertexInputInfo.vertexAttributeDescriptionCount = static_cast<uint32_t>(info.attributeDescriptions.size());
	878	vertexInputInfo.pVertexBindingDescriptions = &info.bindingDescription;
	879	vertexInputInfo.pVertexAttributeDescriptions = info.attributeDescriptions.data();
[84216c7]	880
	881	VkPipelineInputAssemblyStateCreateInfo inputAssembly = {};
	882	inputAssembly.sType = VK_STRUCTURE_TYPE_PIPELINE_INPUT_ASSEMBLY_STATE_CREATE_INFO;
	883	inputAssembly.topology = VK_PRIMITIVE_TOPOLOGY_TRIANGLE_LIST;
	884	inputAssembly.primitiveRestartEnable = VK_FALSE;
	885
	886	VkViewport viewport = {};
	887	viewport.x = 0.0f;
	888	viewport.y = 0.0f;
	889	viewport.width = (float) swapChainExtent.width;
	890	viewport.height = (float) swapChainExtent.height;
	891	viewport.minDepth = 0.0f;
	892	viewport.maxDepth = 1.0f;
	893
	894	VkRect2D scissor = {};
	895	scissor.offset = { 0, 0 };
	896	scissor.extent = swapChainExtent;
	897
	898	VkPipelineViewportStateCreateInfo viewportState = {};
	899	viewportState.sType = VK_STRUCTURE_TYPE_PIPELINE_VIEWPORT_STATE_CREATE_INFO;
	900	viewportState.viewportCount = 1;
	901	viewportState.pViewports = &viewport;
	902	viewportState.scissorCount = 1;
	903	viewportState.pScissors = &scissor;
	904
	905	VkPipelineRasterizationStateCreateInfo rasterizer = {};
	906	rasterizer.sType = VK_STRUCTURE_TYPE_PIPELINE_RASTERIZATION_STATE_CREATE_INFO;
	907	rasterizer.depthClampEnable = VK_FALSE;
	908	rasterizer.rasterizerDiscardEnable = VK_FALSE;
	909	rasterizer.polygonMode = VK_POLYGON_MODE_FILL;
	910	rasterizer.lineWidth = 1.0f;
	911	rasterizer.cullMode = VK_CULL_MODE_BACK_BIT;
[c7fb883]	912	rasterizer.frontFace = VK_FRONT_FACE_COUNTER_CLOCKWISE;
[621664a]	913	rasterizer.depthBiasEnable = VK_FALSE;
[84216c7]	914
	915	VkPipelineMultisampleStateCreateInfo multisampling = {};
	916	multisampling.sType = VK_STRUCTURE_TYPE_PIPELINE_MULTISAMPLE_STATE_CREATE_INFO;
	917	multisampling.sampleShadingEnable = VK_FALSE;
	918	multisampling.rasterizationSamples = VK_SAMPLE_COUNT_1_BIT;
	919
	920	VkPipelineColorBlendAttachmentState colorBlendAttachment = {};
	921	colorBlendAttachment.colorWriteMask = VK_COLOR_COMPONENT_R_BIT \| VK_COLOR_COMPONENT_G_BIT \| VK_COLOR_COMPONENT_B_BIT \| VK_COLOR_COMPONENT_A_BIT;
[69dccfe]	922	colorBlendAttachment.blendEnable = VK_TRUE;
	923	colorBlendAttachment.colorBlendOp = VK_BLEND_OP_ADD;
	924	colorBlendAttachment.srcColorBlendFactor = VK_BLEND_FACTOR_SRC_ALPHA;
	925	colorBlendAttachment.dstColorBlendFactor = VK_BLEND_FACTOR_ONE_MINUS_SRC_ALPHA;
	926	colorBlendAttachment.alphaBlendOp = VK_BLEND_OP_ADD;
	927	colorBlendAttachment.srcAlphaBlendFactor = VK_BLEND_FACTOR_SRC_ALPHA;
	928	colorBlendAttachment.dstAlphaBlendFactor = VK_BLEND_FACTOR_ONE_MINUS_SRC_ALPHA;
[84216c7]	929
	930	VkPipelineColorBlendStateCreateInfo colorBlending = {};
	931	colorBlending.sType = VK_STRUCTURE_TYPE_PIPELINE_COLOR_BLEND_STATE_CREATE_INFO;
	932	colorBlending.logicOpEnable = VK_FALSE;
	933	colorBlending.logicOp = VK_LOGIC_OP_COPY;
	934	colorBlending.attachmentCount = 1;
	935	colorBlending.pAttachments = &colorBlendAttachment;
	936	colorBlending.blendConstants[0] = 0.0f;
	937	colorBlending.blendConstants[1] = 0.0f;
	938	colorBlending.blendConstants[2] = 0.0f;
	939	colorBlending.blendConstants[3] = 0.0f;
	940
[adcd252]	941	VkPipelineDepthStencilStateCreateInfo depthStencil = {};
	942	depthStencil.sType = VK_STRUCTURE_TYPE_PIPELINE_DEPTH_STENCIL_STATE_CREATE_INFO;
	943	depthStencil.depthTestEnable = VK_TRUE;
	944	depthStencil.depthWriteEnable = VK_TRUE;
	945	depthStencil.depthCompareOp = VK_COMPARE_OP_LESS;
	946	depthStencil.depthBoundsTestEnable = VK_FALSE;
	947	depthStencil.minDepthBounds = 0.0f;
	948	depthStencil.maxDepthBounds = 1.0f;
	949	depthStencil.stencilTestEnable = VK_FALSE;
	950	depthStencil.front = {};
	951	depthStencil.back = {};
	952
[84216c7]	953	VkPipelineLayoutCreateInfo pipelineLayoutInfo = {};
	954	pipelineLayoutInfo.sType = VK_STRUCTURE_TYPE_PIPELINE_LAYOUT_CREATE_INFO;
[de32fda]	955	pipelineLayoutInfo.setLayoutCount = 1;
[d22ae72]	956	pipelineLayoutInfo.pSetLayouts = &info.descriptorSetLayout;
[84216c7]	957	pipelineLayoutInfo.pushConstantRangeCount = 0;
	958
[d22ae72]	959	if (vkCreatePipelineLayout(device, &pipelineLayoutInfo, nullptr, &info.pipelineLayout) != VK_SUCCESS) {
[84216c7]	960	throw runtime_error("failed to create pipeline layout!");
	961	}
	962
[fd70015]	963	VkGraphicsPipelineCreateInfo pipelineInfo = {};
	964	pipelineInfo.sType = VK_STRUCTURE_TYPE_GRAPHICS_PIPELINE_CREATE_INFO;
	965	pipelineInfo.stageCount = 2;
	966	pipelineInfo.pStages = shaderStages;
	967	pipelineInfo.pVertexInputState = &vertexInputInfo;
	968	pipelineInfo.pInputAssemblyState = &inputAssembly;
	969	pipelineInfo.pViewportState = &viewportState;
	970	pipelineInfo.pRasterizationState = &rasterizer;
	971	pipelineInfo.pMultisampleState = &multisampling;
[adcd252]	972	pipelineInfo.pDepthStencilState = &depthStencil;
[fd70015]	973	pipelineInfo.pColorBlendState = &colorBlending;
	974	pipelineInfo.pDynamicState = nullptr;
[d22ae72]	975	pipelineInfo.layout = info.pipelineLayout;
[fd70015]	976	pipelineInfo.renderPass = renderPass;
	977	pipelineInfo.subpass = 0;
	978	pipelineInfo.basePipelineHandle = VK_NULL_HANDLE;
	979	pipelineInfo.basePipelineIndex = -1;
	980
[d22ae72]	981	if (vkCreateGraphicsPipelines(device, VK_NULL_HANDLE, 1, &pipelineInfo, nullptr, &info.pipeline) != VK_SUCCESS) {
[fd70015]	982	throw runtime_error("failed to create graphics pipeline!");
	983	}
	984
[e09ad38]	985	vkDestroyShaderModule(device, vertShaderModule, nullptr);
	986	vkDestroyShaderModule(device, fragShaderModule, nullptr);
	987	}
	988
	989	VkShaderModule createShaderModule(const vector<char>& code) {
	990	VkShaderModuleCreateInfo createInfo = {};
	991	createInfo.sType = VK_STRUCTURE_TYPE_SHADER_MODULE_CREATE_INFO;
	992	createInfo.codeSize = code.size();
	993	createInfo.pCode = reinterpret_cast<const uint32_t*>(code.data());
	994
	995	VkShaderModule shaderModule;
	996	if (vkCreateShaderModule(device, &createInfo, nullptr, &shaderModule) != VK_SUCCESS) {
	997	throw runtime_error("failed to create shader module!");
	998	}
	999
	1000	return shaderModule;
[4befb76]	1001	}
	1002
[ebeb3aa]	1003	void createFramebuffers() {
	1004	swapChainFramebuffers.resize(swapChainImageViews.size());
	1005
	1006	for (size_t i = 0; i < swapChainImageViews.size(); i++) {
[adcd252]	1007	array <VkImageView, 2> attachments = {
	1008	swapChainImageViews[i],
	1009	depthImageView
[ebeb3aa]	1010	};
	1011
	1012	VkFramebufferCreateInfo framebufferInfo = {};
	1013	framebufferInfo.sType = VK_STRUCTURE_TYPE_FRAMEBUFFER_CREATE_INFO;
	1014	framebufferInfo.renderPass = renderPass;
[adcd252]	1015	framebufferInfo.attachmentCount = static_cast<uint32_t>(attachments.size());
	1016	framebufferInfo.pAttachments = attachments.data();
[ebeb3aa]	1017	framebufferInfo.width = swapChainExtent.width;
	1018	framebufferInfo.height = swapChainExtent.height;
	1019	framebufferInfo.layers = 1;
	1020
	1021	if (vkCreateFramebuffer(device, &framebufferInfo, nullptr, &swapChainFramebuffers[i]) != VK_SUCCESS) {
	1022	throw runtime_error("failed to create framebuffer!");
	1023	}
	1024	}
	1025	}
	1026
[47bff4c]	1027	void createCommandPool() {
	1028	QueueFamilyIndices queueFamilyIndices = findQueueFamilies(physicalDevice);
	1029
	1030	VkCommandPoolCreateInfo poolInfo = {};
	1031	poolInfo.sType = VK_STRUCTURE_TYPE_COMMAND_POOL_CREATE_INFO;
	1032	poolInfo.queueFamilyIndex = queueFamilyIndices.graphicsFamily.value();
	1033	poolInfo.flags = 0;
	1034
	1035	if (vkCreateCommandPool(device, &poolInfo, nullptr, &commandPool) != VK_SUCCESS) {
[621664a]	1036	throw runtime_error("failed to create graphics command pool!");
[47bff4c]	1037	}
	1038	}
	1039
[90a424f]	1040	/* START OF REFACTORED CODE */
[621664a]	1041	QueueFamilyIndices findQueueFamilies(VkPhysicalDevice device) {
	1042	QueueFamilyIndices indices;
	1043
	1044	uint32_t queueFamilyCount = 0;
	1045	vkGetPhysicalDeviceQueueFamilyProperties(device, &queueFamilyCount, nullptr);
	1046
	1047	vector<VkQueueFamilyProperties> queueFamilies(queueFamilyCount);
	1048	vkGetPhysicalDeviceQueueFamilyProperties(device, &queueFamilyCount, queueFamilies.data());
	1049
	1050	int i = 0;
	1051	for (const auto& queueFamily : queueFamilies) {
	1052	if (queueFamily.queueCount > 0 && queueFamily.queueFlags & VK_QUEUE_GRAPHICS_BIT) {
	1053	indices.graphicsFamily = i;
	1054	}
	1055
	1056	VkBool32 presentSupport = false;
	1057	vkGetPhysicalDeviceSurfaceSupportKHR(device, i, surface, &presentSupport);
	1058
	1059	if (queueFamily.queueCount > 0 && presentSupport) {
	1060	indices.presentFamily = i;
	1061	}
	1062
	1063	if (indices.isComplete()) {
	1064	break;
	1065	}
	1066
	1067	i++;
	1068	}
	1069
	1070	return indices;
	1071	}
[90a424f]	1072	/* END OF REFACTORED CODE */
[621664a]	1073
[adcd252]	1074	void createDepthResources() {
	1075	VkFormat depthFormat = findDepthFormat();
	1076
	1077	createImage(swapChainExtent.width, swapChainExtent.height, depthFormat, VK_IMAGE_TILING_OPTIMAL,
	1078	VK_IMAGE_USAGE_DEPTH_STENCIL_ATTACHMENT_BIT, VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT, depthImage, depthImageMemory);
	1079	depthImageView = createImageView(depthImage, depthFormat, VK_IMAGE_ASPECT_DEPTH_BIT);
	1080
	1081	transitionImageLayout(depthImage, depthFormat, VK_IMAGE_LAYOUT_UNDEFINED, VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL);
	1082	}
	1083
	1084	VkFormat findDepthFormat() {
	1085	return findSupportedFormat(
	1086	{ VK_FORMAT_D32_SFLOAT, VK_FORMAT_D32_SFLOAT_S8_UINT, VK_FORMAT_D24_UNORM_S8_UINT },
	1087	VK_IMAGE_TILING_OPTIMAL,
	1088	VK_FORMAT_FEATURE_DEPTH_STENCIL_ATTACHMENT_BIT
	1089	);
	1090	}
	1091
	1092	VkFormat findSupportedFormat(const vector<VkFormat>& candidates, VkImageTiling tiling,
	1093	VkFormatFeatureFlags features) {
	1094	for (VkFormat format : candidates) {
	1095	VkFormatProperties props;
	1096	vkGetPhysicalDeviceFormatProperties(physicalDevice, format, &props);
	1097
	1098	if (tiling == VK_IMAGE_TILING_LINEAR &&
	1099	(props.linearTilingFeatures & features) == features) {
	1100	return format;
	1101	} else if (tiling == VK_IMAGE_TILING_OPTIMAL &&
	1102	(props.optimalTilingFeatures & features) == features) {
	1103	return format;
	1104	}
	1105	}
	1106
	1107	throw runtime_error("failed to find supported format!");
	1108	}
	1109
	1110	bool hasStencilComponent(VkFormat format) {
	1111	return format == VK_FORMAT_D32_SFLOAT_S8_UINT \|\| format == VK_FORMAT_D24_UNORM_S8_UINT;
	1112	}
	1113
[69dccfe]	1114	void createImageResources(string filename, VkImage& image, VkDeviceMemory& imageMemory, VkImageView& view) {
[eea05dd]	1115	int texWidth, texHeight, texChannels;
	1116
[69dccfe]	1117	stbi_uc* pixels = stbi_load(filename.c_str(), &texWidth, &texHeight, &texChannels, STBI_rgb_alpha);
[eea05dd]	1118	VkDeviceSize imageSize = texWidth * texHeight * 4;
	1119
	1120	if (!pixels) {
	1121	throw runtime_error("failed to load texture image!");
	1122	}
	1123
	1124	VkBuffer stagingBuffer;
	1125	VkDeviceMemory stagingBufferMemory;
	1126
	1127	createBuffer(imageSize, VK_BUFFER_USAGE_TRANSFER_SRC_BIT,
	1128	VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT \| VK_MEMORY_PROPERTY_HOST_COHERENT_BIT,
	1129	stagingBuffer, stagingBufferMemory);
	1130
	1131	void* data;
	1132
	1133	vkMapMemory(device, stagingBufferMemory, 0, imageSize, 0, &data);
	1134	memcpy(data, pixels, static_cast<size_t>(imageSize));
	1135	vkUnmapMemory(device, stagingBufferMemory);
	1136
	1137	stbi_image_free(pixels);
	1138
	1139	createImage(texWidth, texHeight, VK_FORMAT_R8G8B8A8_UNORM, VK_IMAGE_TILING_OPTIMAL,
	1140	VK_IMAGE_USAGE_TRANSFER_DST_BIT \| VK_IMAGE_USAGE_SAMPLED_BIT,
[69dccfe]	1141	VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT, image, imageMemory);
[eea05dd]	1142
[69dccfe]	1143	transitionImageLayout(image, VK_FORMAT_R8G8B8A8_UNORM, VK_IMAGE_LAYOUT_UNDEFINED, VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL);
	1144	copyBufferToImage(stagingBuffer, image, static_cast<uint32_t>(texWidth), static_cast<uint32_t>(texHeight));
	1145	transitionImageLayout(image, VK_FORMAT_R8G8B8A8_UNORM, VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL, VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL);
[eea05dd]	1146
	1147	vkDestroyBuffer(device, stagingBuffer, nullptr);
[f5d5686]	1148	vkFreeMemory(device, stagingBufferMemory, nullptr);
[69dccfe]	1149
	1150	view = createImageView(image, VK_FORMAT_R8G8B8A8_UNORM, VK_IMAGE_ASPECT_COLOR_BIT);
[eea05dd]	1151	}
	1152
[e1a7f5a]	1153	void createImageResourcesFromSDLTexture(SDL_Texture* texture, VkImage& image, VkDeviceMemory& imageMemory, VkImageView& view) {
	1154	int a, w, h;
	1155
	1156	// I only need this here for the width and height, which are constants, so just use those instead
	1157	SDL_QueryTexture(texture, nullptr, &a, &w, &h);
	1158
	1159	createImage(w, h, VK_FORMAT_R8G8B8A8_UNORM, VK_IMAGE_TILING_OPTIMAL,
	1160	VK_IMAGE_USAGE_TRANSFER_DST_BIT \| VK_IMAGE_USAGE_SAMPLED_BIT,
	1161	VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT, image, imageMemory);
	1162
	1163	view = createImageView(image, VK_FORMAT_R8G8B8A8_UNORM, VK_IMAGE_ASPECT_COLOR_BIT);
	1164	}
	1165
	1166	void populateImageFromSDLTexture(SDL_Texture* texture, VkImage& image) {
[f00ee54]	1167	int a, w, h;
[e1a7f5a]	1168
	1169	SDL_QueryTexture(texture, nullptr, &a, &w, &h);
	1170
	1171	VkDeviceSize imageSize = w * h * 4;
	1172	unsigned char* pixels = new unsigned char[imageSize];
	1173
	1174	SDL_RenderReadPixels(gRenderer, nullptr, SDL_PIXELFORMAT_ABGR8888, pixels, w * 4);
	1175
	1176	VkBuffer stagingBuffer;
	1177	VkDeviceMemory stagingBufferMemory;
	1178
	1179	createBuffer(imageSize,
	1180	VK_BUFFER_USAGE_TRANSFER_DST_BIT \| VK_BUFFER_USAGE_TRANSFER_SRC_BIT,
	1181	VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT,
	1182	stagingBuffer, stagingBufferMemory);
	1183
	1184	void* data;
	1185
	1186	vkMapMemory(device, stagingBufferMemory, 0, VK_WHOLE_SIZE, 0, &data);
	1187	memcpy(data, pixels, static_cast<size_t>(imageSize));
	1188
	1189	VkMappedMemoryRange mappedMemoryRange = {};
	1190	mappedMemoryRange.sType = VK_STRUCTURE_TYPE_MAPPED_MEMORY_RANGE;
	1191	mappedMemoryRange.memory = stagingBufferMemory;
	1192	mappedMemoryRange.offset = 0;
	1193	mappedMemoryRange.size = VK_WHOLE_SIZE;
	1194
	1195	// TODO: Should probably check that the function succeeded
	1196	vkFlushMappedMemoryRanges(device, 1, &mappedMemoryRange);
	1197	vkUnmapMemory(device, stagingBufferMemory);
	1198
[8a40f4b]	1199	delete[] pixels;
	1200
[e1a7f5a]	1201	transitionImageLayout(image, VK_FORMAT_R8G8B8A8_UNORM, VK_IMAGE_LAYOUT_UNDEFINED, VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL);
	1202	copyBufferToImage(stagingBuffer, image, static_cast<uint32_t>(w), static_cast<uint32_t>(h));
	1203	transitionImageLayout(image, VK_FORMAT_R8G8B8A8_UNORM, VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL, VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL);
	1204
	1205	vkDestroyBuffer(device, stagingBuffer, nullptr);
	1206	vkFreeMemory(device, stagingBufferMemory, nullptr);
	1207	}
	1208
[621664a]	1209	void createImage(uint32_t width, uint32_t height, VkFormat format, VkImageTiling tiling, VkImageUsageFlags usage,
	1210	VkMemoryPropertyFlags properties, VkImage& image, VkDeviceMemory& imageMemory) {
[eea05dd]	1211	VkImageCreateInfo imageInfo = {};
	1212	imageInfo.sType = VK_STRUCTURE_TYPE_IMAGE_CREATE_INFO;
	1213	imageInfo.imageType = VK_IMAGE_TYPE_2D;
	1214	imageInfo.extent.width = width;
	1215	imageInfo.extent.height = height;
	1216	imageInfo.extent.depth = 1;
	1217	imageInfo.mipLevels = 1;
	1218	imageInfo.arrayLayers = 1;
	1219	imageInfo.format = format;
	1220	imageInfo.tiling = tiling;
	1221	imageInfo.initialLayout = VK_IMAGE_LAYOUT_UNDEFINED;
	1222	imageInfo.usage = usage;
	1223	imageInfo.samples = VK_SAMPLE_COUNT_1_BIT;
	1224	imageInfo.sharingMode = VK_SHARING_MODE_EXCLUSIVE;
	1225
	1226	if (vkCreateImage(device, &imageInfo, nullptr, &image) != VK_SUCCESS) {
	1227	throw runtime_error("failed to create image!");
	1228	}
	1229
	1230	VkMemoryRequirements memRequirements;
	1231	vkGetImageMemoryRequirements(device, image, &memRequirements);
	1232
[621664a]	1233	VkMemoryAllocateInfo allocInfo = {};
[eea05dd]	1234	allocInfo.sType = VK_STRUCTURE_TYPE_MEMORY_ALLOCATE_INFO;
	1235	allocInfo.allocationSize = memRequirements.size;
	1236	allocInfo.memoryTypeIndex = findMemoryType(memRequirements.memoryTypeBits, properties);
	1237
	1238	if (vkAllocateMemory(device, &allocInfo, nullptr, &imageMemory) != VK_SUCCESS) {
	1239	throw runtime_error("failed to allocate image memory!");
	1240	}
	1241
	1242	vkBindImageMemory(device, image, imageMemory, 0);
	1243	}
	1244
[621664a]	1245	void transitionImageLayout(VkImage image, VkFormat format, VkImageLayout oldLayout, VkImageLayout newLayout) {
[eea05dd]	1246	VkCommandBuffer commandBuffer = beginSingleTimeCommands();
	1247
	1248	VkImageMemoryBarrier barrier = {};
	1249	barrier.sType = VK_STRUCTURE_TYPE_IMAGE_MEMORY_BARRIER;
	1250	barrier.oldLayout = oldLayout;
	1251	barrier.newLayout = newLayout;
	1252	barrier.srcQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED;
	1253	barrier.dstQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED;
	1254	barrier.image = image;
[adcd252]	1255
	1256	if (newLayout == VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL) {
	1257	barrier.subresourceRange.aspectMask = VK_IMAGE_ASPECT_DEPTH_BIT;
	1258
	1259	if (hasStencilComponent(format)) {
	1260	barrier.subresourceRange.aspectMask \|= VK_IMAGE_ASPECT_STENCIL_BIT;
	1261	}
	1262	} else {
	1263	barrier.subresourceRange.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT;
	1264	}
	1265
[eea05dd]	1266	barrier.subresourceRange.baseMipLevel = 0;
	1267	barrier.subresourceRange.levelCount = 1;
	1268	barrier.subresourceRange.baseArrayLayer = 0;
	1269	barrier.subresourceRange.layerCount = 1;
[f5d5686]	1270
	1271	VkPipelineStageFlags sourceStage;
	1272	VkPipelineStageFlags destinationStage;
[eea05dd]	1273
	1274	if (oldLayout == VK_IMAGE_LAYOUT_UNDEFINED && newLayout == VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL) {
	1275	barrier.srcAccessMask = 0;
	1276	barrier.dstAccessMask = VK_ACCESS_TRANSFER_WRITE_BIT;
	1277
	1278	sourceStage = VK_PIPELINE_STAGE_TOP_OF_PIPE_BIT;
	1279	destinationStage = VK_PIPELINE_STAGE_TRANSFER_BIT;
	1280	} else if (oldLayout == VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL && newLayout == VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL) {
	1281	barrier.srcAccessMask = VK_ACCESS_TRANSFER_WRITE_BIT;
	1282	barrier.dstAccessMask = VK_ACCESS_SHADER_READ_BIT;
	1283
	1284	sourceStage = VK_PIPELINE_STAGE_TRANSFER_BIT;
	1285	destinationStage = VK_PIPELINE_STAGE_FRAGMENT_SHADER_BIT;
[adcd252]	1286	} else if (oldLayout == VK_IMAGE_LAYOUT_UNDEFINED && newLayout == VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL) {
	1287	barrier.srcAccessMask = 0;
	1288	barrier.dstAccessMask = VK_ACCESS_DEPTH_STENCIL_ATTACHMENT_READ_BIT \| VK_ACCESS_DEPTH_STENCIL_ATTACHMENT_WRITE_BIT;
	1289
	1290	sourceStage = VK_PIPELINE_STAGE_TOP_OF_PIPE_BIT;
	1291	destinationStage = VK_PIPELINE_STAGE_EARLY_FRAGMENT_TESTS_BIT;
[eea05dd]	1292	} else {
	1293	throw invalid_argument("unsupported layout transition!");
	1294	}
	1295
	1296	vkCmdPipelineBarrier(
	1297	commandBuffer,
[f5d5686]	1298	sourceStage, destinationStage,
[eea05dd]	1299	0,
	1300	0, nullptr,
	1301	0, nullptr,
	1302	1, &barrier
	1303	);
	1304
	1305	endSingleTimeCommands(commandBuffer);
	1306	}
	1307
	1308	void copyBufferToImage(VkBuffer buffer, VkImage image, uint32_t width, uint32_t height) {
	1309	VkCommandBuffer commandBuffer = beginSingleTimeCommands();
	1310
	1311	VkBufferImageCopy region = {};
	1312	region.bufferOffset = 0;
	1313	region.bufferRowLength = 0;
	1314	region.bufferImageHeight = 0;
	1315	region.imageSubresource.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT;
	1316	region.imageSubresource.mipLevel = 0;
	1317	region.imageSubresource.baseArrayLayer = 0;
	1318	region.imageSubresource.layerCount = 1;
	1319	region.imageOffset = { 0, 0, 0 };
	1320	region.imageExtent = { width, height, 1 };
	1321
	1322	vkCmdCopyBufferToImage(
	1323	commandBuffer,
	1324	buffer,
	1325	image,
	1326	VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL,
	1327	1,
	1328	&region
	1329	);
	1330
	1331	endSingleTimeCommands(commandBuffer);
	1332	}
	1333
[adcd252]	1334	VkImageView createImageView(VkImage image, VkFormat format, VkImageAspectFlags aspectFlags) {
[fba08f2]	1335	VkImageViewCreateInfo viewInfo = {};
	1336	viewInfo.sType = VK_STRUCTURE_TYPE_IMAGE_VIEW_CREATE_INFO;
	1337	viewInfo.image = image;
	1338	viewInfo.viewType = VK_IMAGE_VIEW_TYPE_2D;
	1339	viewInfo.format = format;
	1340
	1341	viewInfo.components.r = VK_COMPONENT_SWIZZLE_IDENTITY;
	1342	viewInfo.components.g = VK_COMPONENT_SWIZZLE_IDENTITY;
	1343	viewInfo.components.b = VK_COMPONENT_SWIZZLE_IDENTITY;
	1344	viewInfo.components.a = VK_COMPONENT_SWIZZLE_IDENTITY;
	1345
[adcd252]	1346	viewInfo.subresourceRange.aspectMask = aspectFlags;
[fba08f2]	1347	viewInfo.subresourceRange.baseMipLevel = 0;
	1348	viewInfo.subresourceRange.levelCount = 1;
	1349	viewInfo.subresourceRange.baseArrayLayer = 0;
	1350	viewInfo.subresourceRange.layerCount = 1;
	1351
	1352	VkImageView imageView;
	1353	if (vkCreateImageView(device, &viewInfo, nullptr, &imageView) != VK_SUCCESS) {
	1354	throw runtime_error("failed to create texture image view!");
	1355	}
	1356
	1357	return imageView;
	1358	}
	1359
	1360	void createTextureSampler() {
	1361	VkSamplerCreateInfo samplerInfo = {};
	1362	samplerInfo.sType = VK_STRUCTURE_TYPE_SAMPLER_CREATE_INFO;
	1363	samplerInfo.magFilter = VK_FILTER_LINEAR;
	1364	samplerInfo.minFilter = VK_FILTER_LINEAR;
	1365
	1366	samplerInfo.addressModeU = VK_SAMPLER_ADDRESS_MODE_REPEAT;
	1367	samplerInfo.addressModeV = VK_SAMPLER_ADDRESS_MODE_REPEAT;
	1368	samplerInfo.addressModeW = VK_SAMPLER_ADDRESS_MODE_REPEAT;
	1369
	1370	samplerInfo.anisotropyEnable = VK_TRUE;
	1371	samplerInfo.maxAnisotropy = 16;
	1372	samplerInfo.borderColor = VK_BORDER_COLOR_INT_OPAQUE_BLACK;
	1373	samplerInfo.unnormalizedCoordinates = VK_FALSE;
	1374	samplerInfo.compareEnable = VK_FALSE;
	1375	samplerInfo.compareOp = VK_COMPARE_OP_ALWAYS;
	1376	samplerInfo.mipmapMode = VK_SAMPLER_MIPMAP_MODE_LINEAR;
	1377	samplerInfo.mipLodBias = 0.0f;
	1378	samplerInfo.minLod = 0.0f;
	1379	samplerInfo.maxLod = 0.0f;
	1380
	1381	if (vkCreateSampler(device, &samplerInfo, nullptr, &textureSampler) != VK_SUCCESS) {
	1382	throw runtime_error("failed to create texture sampler!");
	1383	}
	1384	}
	1385
[f00ee54]	1386	void createVertexBuffer(GraphicsPipelineInfo& info, const void* vertexData, VkDeviceSize bufferSize) {
[d9ef6ab]	1387	VkBuffer stagingBuffer;
	1388	VkDeviceMemory stagingBufferMemory;
[621664a]	1389	createBuffer(bufferSize, VK_BUFFER_USAGE_TRANSFER_SRC_BIT,
[d9ef6ab]	1390	VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT \| VK_MEMORY_PROPERTY_HOST_COHERENT_BIT,
	1391	stagingBuffer, stagingBufferMemory);
	1392
	1393	void* data;
	1394	vkMapMemory(device, stagingBufferMemory, 0, bufferSize, 0, &data);
[f00ee54]	1395	memcpy(data, vertexData, (size_t) bufferSize);
[d9ef6ab]	1396	vkUnmapMemory(device, stagingBufferMemory);
	1397
	1398	createBuffer(bufferSize, VK_BUFFER_USAGE_TRANSFER_DST_BIT \| VK_BUFFER_USAGE_VERTEX_BUFFER_BIT,
[f00ee54]	1399	VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT, info.vertexBuffer, info.vertexBufferMemory);
[d9ef6ab]	1400
[f00ee54]	1401	copyBuffer(stagingBuffer, info.vertexBuffer, bufferSize);
[d9ef6ab]	1402
	1403	vkDestroyBuffer(device, stagingBuffer, nullptr);
	1404	vkFreeMemory(device, stagingBufferMemory, nullptr);
	1405	}
	1406
[f00ee54]	1407	void createIndexBuffer(GraphicsPipelineInfo& info, const void* indexData, VkDeviceSize bufferSize) {
[cae7a2c]	1408	VkBuffer stagingBuffer;
	1409	VkDeviceMemory stagingBufferMemory;
	1410	createBuffer(bufferSize, VK_BUFFER_USAGE_TRANSFER_SRC_BIT,
	1411	VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT \| VK_MEMORY_PROPERTY_HOST_COHERENT_BIT,
	1412	stagingBuffer, stagingBufferMemory);
	1413
	1414	void* data;
	1415	vkMapMemory(device, stagingBufferMemory, 0, bufferSize, 0, &data);
[f00ee54]	1416	memcpy(data, indexData, (size_t) bufferSize);
[cae7a2c]	1417	vkUnmapMemory(device, stagingBufferMemory);
	1418
	1419	createBuffer(bufferSize, VK_BUFFER_USAGE_TRANSFER_DST_BIT \| VK_BUFFER_USAGE_INDEX_BUFFER_BIT,
[f00ee54]	1420	VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT, info.indexBuffer, info.indexBufferMemory);
[cae7a2c]	1421
[f00ee54]	1422	copyBuffer(stagingBuffer, info.indexBuffer, bufferSize);
[cae7a2c]	1423
	1424	vkDestroyBuffer(device, stagingBuffer, nullptr);
	1425	vkFreeMemory(device, stagingBufferMemory, nullptr);
	1426	}
	1427
[621664a]	1428	void createUniformBuffers() {
	1429	VkDeviceSize bufferSize = sizeof(UniformBufferObject);
	1430
	1431	uniformBuffers.resize(swapChainImages.size());
	1432	uniformBuffersMemory.resize(swapChainImages.size());
[721e8be]	1433	uniformBufferInfoList.resize(swapChainImages.size());
[621664a]	1434
	1435	for (size_t i = 0; i < swapChainImages.size(); i++) {
	1436	createBuffer(bufferSize, VK_BUFFER_USAGE_UNIFORM_BUFFER_BIT,
	1437	VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT \| VK_MEMORY_PROPERTY_HOST_COHERENT_BIT,
	1438	uniformBuffers[i], uniformBuffersMemory[i]);
[721e8be]	1439
	1440	uniformBufferInfoList[i].buffer = uniformBuffers[i];
	1441	uniformBufferInfoList[i].offset = 0;
	1442	uniformBufferInfoList[i].range = sizeof(UniformBufferObject);
[621664a]	1443	}
	1444	}
	1445
	1446	void createBuffer(VkDeviceSize size, VkBufferUsageFlags usage, VkMemoryPropertyFlags properties, VkBuffer& buffer, VkDeviceMemory& bufferMemory) {
[80edd70]	1447	VkBufferCreateInfo bufferInfo = {};
	1448	bufferInfo.sType = VK_STRUCTURE_TYPE_BUFFER_CREATE_INFO;
[d9ef6ab]	1449	bufferInfo.size = size;
	1450	bufferInfo.usage = usage;
[80edd70]	1451	bufferInfo.sharingMode = VK_SHARING_MODE_EXCLUSIVE;
	1452
[d9ef6ab]	1453	if (vkCreateBuffer(device, &bufferInfo, nullptr, &buffer) != VK_SUCCESS) {
	1454	throw runtime_error("failed to create buffer!");
[80edd70]	1455	}
	1456
[d9ef6ab]	1457	VkMemoryRequirements memRequirements;
	1458	vkGetBufferMemoryRequirements(device, buffer, &memRequirements);
[80edd70]	1459
	1460	VkMemoryAllocateInfo allocInfo = {};
	1461	allocInfo.sType = VK_STRUCTURE_TYPE_MEMORY_ALLOCATE_INFO;
[d9ef6ab]	1462	allocInfo.allocationSize = memRequirements.size;
	1463	allocInfo.memoryTypeIndex = findMemoryType(memRequirements.memoryTypeBits, properties);
[621664a]	1464
[d9ef6ab]	1465	if (vkAllocateMemory(device, &allocInfo, nullptr, &bufferMemory) != VK_SUCCESS) {
	1466	throw runtime_error("failed to allocate buffer memory!");
[80edd70]	1467	}
	1468
[d9ef6ab]	1469	vkBindBufferMemory(device, buffer, bufferMemory, 0);
	1470	}
[80edd70]	1471
[d9ef6ab]	1472	void copyBuffer(VkBuffer srcBuffer, VkBuffer dstBuffer, VkDeviceSize size) {
[eea05dd]	1473	VkCommandBuffer commandBuffer = beginSingleTimeCommands();
	1474
	1475	VkBufferCopy copyRegion = {};
	1476	copyRegion.size = size;
	1477	vkCmdCopyBuffer(commandBuffer, srcBuffer, dstBuffer, 1, &copyRegion);
	1478
	1479	endSingleTimeCommands(commandBuffer);
	1480	}
	1481
	1482	VkCommandBuffer beginSingleTimeCommands() {
[d9ef6ab]	1483	VkCommandBufferAllocateInfo allocInfo = {};
	1484	allocInfo.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_ALLOCATE_INFO;
	1485	allocInfo.level = VK_COMMAND_BUFFER_LEVEL_PRIMARY;
	1486	allocInfo.commandPool = commandPool;
	1487	allocInfo.commandBufferCount = 1;
	1488
	1489	VkCommandBuffer commandBuffer;
	1490	vkAllocateCommandBuffers(device, &allocInfo, &commandBuffer);
	1491
	1492	VkCommandBufferBeginInfo beginInfo = {};
	1493	beginInfo.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_BEGIN_INFO;
	1494	beginInfo.flags = VK_COMMAND_BUFFER_USAGE_ONE_TIME_SUBMIT_BIT;
	1495
	1496	vkBeginCommandBuffer(commandBuffer, &beginInfo);
	1497
[eea05dd]	1498	return commandBuffer;
	1499	}
[d9ef6ab]	1500
[eea05dd]	1501	void endSingleTimeCommands(VkCommandBuffer commandBuffer) {
[d9ef6ab]	1502	vkEndCommandBuffer(commandBuffer);
	1503
	1504	VkSubmitInfo submitInfo = {};
	1505	submitInfo.sType = VK_STRUCTURE_TYPE_SUBMIT_INFO;
	1506	submitInfo.commandBufferCount = 1;
	1507	submitInfo.pCommandBuffers = &commandBuffer;
	1508
	1509	vkQueueSubmit(graphicsQueue, 1, &submitInfo, VK_NULL_HANDLE);
	1510	vkQueueWaitIdle(graphicsQueue);
	1511
	1512	vkFreeCommandBuffers(device, commandPool, 1, &commandBuffer);
[80edd70]	1513	}
	1514
	1515	uint32_t findMemoryType(uint32_t typeFilter, VkMemoryPropertyFlags properties) {
	1516	VkPhysicalDeviceMemoryProperties memProperties;
	1517	vkGetPhysicalDeviceMemoryProperties(physicalDevice, &memProperties);
	1518
	1519	for (uint32_t i = 0; i < memProperties.memoryTypeCount; i++) {
	1520	if ((typeFilter & (1 << i)) && (memProperties.memoryTypes[i].propertyFlags & properties) == properties) {
	1521	return i;
	1522	}
	1523	}
	1524
	1525	throw runtime_error("failed to find suitable memory type!");
	1526	}
	1527
[721e8be]	1528	void createDescriptorPool(GraphicsPipelineInfo& info) {
	1529	vector<VkDescriptorPoolSize> poolSizes(info.descriptorInfoList.size());
[c7fb883]	1530
[721e8be]	1531	for (size_t i = 0; i < poolSizes.size(); i++) {
	1532	poolSizes[i].type = info.descriptorInfoList[i].type;
	1533	poolSizes[i].descriptorCount = static_cast<uint32_t>(swapChainImages.size());
[c7fb883]	1534	}
[e5d4aca]	1535
	1536	VkDescriptorPoolCreateInfo poolInfo = {};
	1537	poolInfo.sType = VK_STRUCTURE_TYPE_DESCRIPTOR_POOL_CREATE_INFO;
	1538	poolInfo.poolSizeCount = static_cast<uint32_t>(poolSizes.size());
	1539	poolInfo.pPoolSizes = poolSizes.data();
	1540	poolInfo.maxSets = static_cast<uint32_t>(swapChainImages.size());
	1541
	1542	if (vkCreateDescriptorPool(device, &poolInfo, nullptr, &info.descriptorPool) != VK_SUCCESS) {
	1543	throw runtime_error("failed to create descriptor pool!");
	1544	}
	1545	}
	1546
[721e8be]	1547	void createDescriptorSets(GraphicsPipelineInfo& info) {
[e5d4aca]	1548	vector<VkDescriptorSetLayout> layouts(swapChainImages.size(), info.descriptorSetLayout);
	1549
	1550	VkDescriptorSetAllocateInfo allocInfo = {};
	1551	allocInfo.sType = VK_STRUCTURE_TYPE_DESCRIPTOR_SET_ALLOCATE_INFO;
	1552	allocInfo.descriptorPool = info.descriptorPool;
	1553	allocInfo.descriptorSetCount = static_cast<uint32_t>(swapChainImages.size());
	1554	allocInfo.pSetLayouts = layouts.data();
	1555
	1556	info.descriptorSets.resize(swapChainImages.size());
	1557	if (vkAllocateDescriptorSets(device, &allocInfo, info.descriptorSets.data()) != VK_SUCCESS) {
	1558	throw runtime_error("failed to allocate descriptor sets!");
	1559	}
	1560
	1561	for (size_t i = 0; i < swapChainImages.size(); i++) {
[721e8be]	1562	vector<VkWriteDescriptorSet> descriptorWrites(info.descriptorInfoList.size());
	1563
	1564	for (size_t j = 0; j < descriptorWrites.size(); j++) {
	1565	descriptorWrites[j].sType = VK_STRUCTURE_TYPE_WRITE_DESCRIPTOR_SET;
	1566	descriptorWrites[j].dstSet = info.descriptorSets[i];
	1567	descriptorWrites[j].dstBinding = j;
	1568	descriptorWrites[j].dstArrayElement = 0;
	1569	descriptorWrites[j].descriptorType = info.descriptorInfoList[j].type;
	1570	descriptorWrites[j].descriptorCount = 1;
	1571	descriptorWrites[j].pBufferInfo = nullptr;
	1572	descriptorWrites[j].pImageInfo = nullptr;
	1573	descriptorWrites[j].pTexelBufferView = nullptr;
	1574
	1575	switch (descriptorWrites[j].descriptorType) {
	1576	case VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER:
	1577	descriptorWrites[j].pBufferInfo = &(*info.descriptorInfoList[j].bufferDataList)[i];
	1578	break;
	1579	case VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER:
	1580	descriptorWrites[j].pImageInfo = info.descriptorInfoList[j].imageData;
	1581	break;
	1582	default:
	1583	cout << "Unknown descriptor type: " << descriptorWrites[j].descriptorType << endl;
	1584	}
	1585	}
[e5d4aca]	1586
	1587	vkUpdateDescriptorSets(device, static_cast<uint32_t>(descriptorWrites.size()), descriptorWrites.data(), 0, nullptr);
	1588	}
	1589	}
	1590
[47bff4c]	1591	void createCommandBuffers() {
	1592	commandBuffers.resize(swapChainFramebuffers.size());
	1593
	1594	VkCommandBufferAllocateInfo allocInfo = {};
	1595	allocInfo.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_ALLOCATE_INFO;
	1596	allocInfo.commandPool = commandPool;
	1597	allocInfo.level = VK_COMMAND_BUFFER_LEVEL_PRIMARY;
[621664a]	1598	allocInfo.commandBufferCount = (uint32_t) commandBuffers.size();
[47bff4c]	1599
	1600	if (vkAllocateCommandBuffers(device, &allocInfo, commandBuffers.data()) != VK_SUCCESS) {
[621664a]	1601	throw runtime_error("failed to allocate command buffers!");
[47bff4c]	1602	}
	1603
	1604	for (size_t i = 0; i < commandBuffers.size(); i++) {
	1605	VkCommandBufferBeginInfo beginInfo = {};
	1606	beginInfo.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_BEGIN_INFO;
	1607	beginInfo.flags = VK_COMMAND_BUFFER_USAGE_SIMULTANEOUS_USE_BIT;
	1608	beginInfo.pInheritanceInfo = nullptr;
	1609
	1610	if (vkBeginCommandBuffer(commandBuffers[i], &beginInfo) != VK_SUCCESS) {
	1611	throw runtime_error("failed to begin recording command buffer!");
	1612	}
	1613
	1614	VkRenderPassBeginInfo renderPassInfo = {};
	1615	renderPassInfo.sType = VK_STRUCTURE_TYPE_RENDER_PASS_BEGIN_INFO;
	1616	renderPassInfo.renderPass = renderPass;
	1617	renderPassInfo.framebuffer = swapChainFramebuffers[i];
	1618	renderPassInfo.renderArea.offset = { 0, 0 };
	1619	renderPassInfo.renderArea.extent = swapChainExtent;
	1620
[adcd252]	1621	array<VkClearValue, 2> clearValues = {};
[f00ee54]	1622	clearValues[0].color = {{ 0.0f, 0.0f, 0.0f, 1.0f }};
[adcd252]	1623	clearValues[1].depthStencil = { 1.0f, 0 };
	1624
	1625	renderPassInfo.clearValueCount = static_cast<uint32_t>(clearValues.size());
	1626	renderPassInfo.pClearValues = clearValues.data();
[47bff4c]	1627
	1628	vkCmdBeginRenderPass(commandBuffers[i], &renderPassInfo, VK_SUBPASS_CONTENTS_INLINE);
[621664a]	1629
[d22ae72]	1630	createGraphicsPipelineCommands(scenePipeline, i);
	1631	createGraphicsPipelineCommands(overlayPipeline, i);
[621664a]	1632
[47bff4c]	1633	vkCmdEndRenderPass(commandBuffers[i]);
	1634
	1635	if (vkEndCommandBuffer(commandBuffers[i]) != VK_SUCCESS) {
	1636	throw runtime_error("failed to record command buffer!");
	1637	}
	1638	}
	1639	}
	1640
[1187ef5]	1641	void createGraphicsPipelineCommands(GraphicsPipelineInfo& info, uint32_t currentImage) {
	1642	vkCmdBindPipeline(commandBuffers[currentImage], VK_PIPELINE_BIND_POINT_GRAPHICS, info.pipeline);
	1643	vkCmdBindDescriptorSets(commandBuffers[currentImage], VK_PIPELINE_BIND_POINT_GRAPHICS, info.pipelineLayout, 0, 1,
	1644	&info.descriptorSets[currentImage], 0, nullptr);
[d22ae72]	1645
	1646	VkBuffer vertexBuffers[] = { info.vertexBuffer };
	1647	VkDeviceSize offsets[] = { 0 };
[1187ef5]	1648	vkCmdBindVertexBuffers(commandBuffers[currentImage], 0, 1, vertexBuffers, offsets);
[d22ae72]	1649
[1187ef5]	1650	vkCmdBindIndexBuffer(commandBuffers[currentImage], info.indexBuffer, 0, VK_INDEX_TYPE_UINT16);
[d22ae72]	1651
[1187ef5]	1652	vkCmdDrawIndexed(commandBuffers[currentImage], static_cast<uint32_t>(info.numIndices), 1, 0, 0, 0);
[d22ae72]	1653	}
	1654
[47bff4c]	1655	void createSyncObjects() {
	1656	imageAvailableSemaphores.resize(MAX_FRAMES_IN_FLIGHT);
	1657	renderFinishedSemaphores.resize(MAX_FRAMES_IN_FLIGHT);
	1658	inFlightFences.resize(MAX_FRAMES_IN_FLIGHT);
	1659
	1660	VkSemaphoreCreateInfo semaphoreInfo = {};
	1661	semaphoreInfo.sType = VK_STRUCTURE_TYPE_SEMAPHORE_CREATE_INFO;
	1662
	1663	VkFenceCreateInfo fenceInfo = {};
	1664	fenceInfo.sType = VK_STRUCTURE_TYPE_FENCE_CREATE_INFO;
	1665	fenceInfo.flags = VK_FENCE_CREATE_SIGNALED_BIT;
	1666
	1667	for (size_t i = 0; i < MAX_FRAMES_IN_FLIGHT; i++) {
	1668	if (vkCreateSemaphore(device, &semaphoreInfo, nullptr, &imageAvailableSemaphores[i]) != VK_SUCCESS \|\|
[1187ef5]	1669	vkCreateSemaphore(device, &semaphoreInfo, nullptr, &renderFinishedSemaphores[i]) != VK_SUCCESS \|\|
	1670	vkCreateFence(device, &fenceInfo, nullptr, &inFlightFences[i]) != VK_SUCCESS) {
[47bff4c]	1671	throw runtime_error("failed to create synchronization objects for a frame!");
	1672	}
	1673	}
	1674	}
	1675
[826df16]	1676	void mainLoop() {
	1677	// TODO: Create some generic event-handling functions in game-gui-*
	1678	SDL_Event e;
	1679	bool quit = false;
	1680
[7dcd925]	1681	while (!quit) {
[826df16]	1682	while (SDL_PollEvent(&e)) {
	1683	if (e.type == SDL_QUIT) {
	1684	quit = true;
	1685	}
	1686	if (e.type == SDL_KEYDOWN) {
	1687	quit = true;
	1688	}
	1689	if (e.type == SDL_MOUSEBUTTONDOWN) {
	1690	quit = true;
	1691	}
[75108ef]	1692	if (e.type == SDL_WINDOWEVENT) {
[1187ef5]	1693	if (e.window.event == SDL_WINDOWEVENT_SIZE_CHANGED \|\|
	1694	e.window.event == SDL_WINDOWEVENT_MINIMIZED) {
[75108ef]	1695	framebufferResized = true;
	1696	}
	1697	}
[47bff4c]	1698	}
[321272c]	1699
[5f3dba8]	1700	drawUI();
[e1a7f5a]	1701
	1702	drawFrame();
[47bff4c]	1703	}
	1704
	1705	vkDeviceWaitIdle(device);
	1706	}
	1707
	1708	void drawFrame() {
	1709	vkWaitForFences(device, 1, &inFlightFences[currentFrame], VK_TRUE, numeric_limits<uint64_t>::max());
	1710
	1711	uint32_t imageIndex;
	1712
[621664a]	1713	VkResult result = vkAcquireNextImageKHR(device, swapChain, numeric_limits<uint64_t>::max(),
	1714	imageAvailableSemaphores[currentFrame], VK_NULL_HANDLE, &imageIndex);
[75108ef]	1715
	1716	if (result == VK_ERROR_OUT_OF_DATE_KHR) {
	1717	recreateSwapChain();
	1718	return;
	1719	} else if (result != VK_SUCCESS && result != VK_SUBOPTIMAL_KHR) {
	1720	throw runtime_error("failed to acquire swap chain image!");
	1721	}
[47bff4c]	1722
[de32fda]	1723	updateUniformBuffer(imageIndex);
	1724
[47bff4c]	1725	VkSubmitInfo submitInfo = {};
	1726	submitInfo.sType = VK_STRUCTURE_TYPE_SUBMIT_INFO;
	1727
	1728	VkSemaphore waitSemaphores[] = { imageAvailableSemaphores[currentFrame] };
	1729	VkPipelineStageFlags waitStages[] = { VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT };
	1730
	1731	submitInfo.waitSemaphoreCount = 1;
	1732	submitInfo.pWaitSemaphores = waitSemaphores;
	1733	submitInfo.pWaitDstStageMask = waitStages;
	1734	submitInfo.commandBufferCount = 1;
	1735	submitInfo.pCommandBuffers = &commandBuffers[imageIndex];
	1736
	1737	VkSemaphore signalSemaphores[] = { renderFinishedSemaphores[currentFrame] };
	1738
	1739	submitInfo.signalSemaphoreCount = 1;
	1740	submitInfo.pSignalSemaphores = signalSemaphores;
	1741
[75108ef]	1742	vkResetFences(device, 1, &inFlightFences[currentFrame]);
	1743
[47bff4c]	1744	if (vkQueueSubmit(graphicsQueue, 1, &submitInfo, inFlightFences[currentFrame]) != VK_SUCCESS) {
	1745	throw runtime_error("failed to submit draw command buffer!");
[bfd620e]	1746	}
[47bff4c]	1747
	1748	VkPresentInfoKHR presentInfo = {};
	1749	presentInfo.sType = VK_STRUCTURE_TYPE_PRESENT_INFO_KHR;
	1750	presentInfo.waitSemaphoreCount = 1;
	1751	presentInfo.pWaitSemaphores = signalSemaphores;
	1752
	1753	VkSwapchainKHR swapChains[] = { swapChain };
	1754	presentInfo.swapchainCount = 1;
	1755	presentInfo.pSwapchains = swapChains;
	1756	presentInfo.pImageIndices = &imageIndex;
	1757	presentInfo.pResults = nullptr;
	1758
[75108ef]	1759	result = vkQueuePresentKHR(presentQueue, &presentInfo);
	1760
	1761	if (result == VK_ERROR_OUT_OF_DATE_KHR \|\| result == VK_SUBOPTIMAL_KHR \|\| framebufferResized) {
	1762	framebufferResized = false;
	1763	recreateSwapChain();
	1764	} else if (result != VK_SUCCESS) {
	1765	throw runtime_error("failed to present swap chain image!");
	1766	}
[47bff4c]	1767
	1768	currentFrame = (currentFrame + 1) % MAX_FRAMES_IN_FLIGHT;
[fba08f2]	1769	currentFrame = (currentFrame + 1) % MAX_FRAMES_IN_FLIGHT;
[826df16]	1770	}
	1771
[5f3dba8]	1772	void drawUI() {
[e1a7f5a]	1773	// TODO: Since I currently don't use any other render targets,
	1774	// I may as well set this once before the render loop
[5f3dba8]	1775	SDL_SetRenderTarget(gRenderer, uiOverlay);
	1776
[5936c58]	1777	SDL_SetRenderDrawColor(gRenderer, 0x00, 0x00, 0x00, 0x00);
[5f3dba8]	1778	SDL_RenderClear(gRenderer);
	1779
	1780	SDL_Rect rect;
	1781
	1782	rect = {280, 220, 100, 100};
[5936c58]	1783	SDL_SetRenderDrawColor(gRenderer, 0x00, 0xFF, 0x00, 0xFF);
[5f3dba8]	1784	SDL_RenderFillRect(gRenderer, &rect);
	1785	SDL_SetRenderDrawColor(gRenderer, 0x00, 0x9F, 0x9F, 0xFF);
	1786
	1787	rect = {10, 10, 0, 0};
	1788	SDL_QueryTexture(uiText, nullptr, nullptr, &(rect.w), &(rect.h));
	1789	SDL_RenderCopy(gRenderer, uiText, nullptr, &rect);
	1790
	1791	rect = {10, 80, 0, 0};
	1792	SDL_QueryTexture(uiImage, nullptr, nullptr, &(rect.w), &(rect.h));
	1793	SDL_RenderCopy(gRenderer, uiImage, nullptr, &rect);
	1794
[5936c58]	1795	SDL_SetRenderDrawColor(gRenderer, 0x00, 0x00, 0xFF, 0xFF);
[5f3dba8]	1796	SDL_RenderDrawLine(gRenderer, 50, 5, 150, 500);
	1797
[e1a7f5a]	1798	populateImageFromSDLTexture(uiOverlay, sdlOverlayImage);
[5f3dba8]	1799	}
	1800
[de32fda]	1801	void updateUniformBuffer(uint32_t currentImage) {
	1802	static auto startTime = chrono::high_resolution_clock::now();
	1803
	1804	auto currentTime = chrono::high_resolution_clock::now();
	1805	float time = chrono::duration<float, chrono::seconds::period>(currentTime - startTime).count();
	1806
	1807	UniformBufferObject ubo = {};
[f00ee54]	1808	ubo.model = rotate(glm::mat4(1.0f), time * glm::radians(90.0f), glm::vec3(0.0f, 0.0f, 1.0f));
	1809	ubo.view = lookAt(glm::vec3(0.0f, 2.0f, 2.0f), glm::vec3(0.0f, 0.0f, 0.0f), glm::vec3(0.0f, 1.0f, 0.0f));
	1810	ubo.proj = perspective(radians(45.0f), swapChainExtent.width / (float)swapChainExtent.height, 0.1f, 10.0f);
[4f63fa8]	1811	ubo.proj[1][1] *= -1; // flip the y-axis so that +y is up
[fba08f2]	1812
[de32fda]	1813	void* data;
	1814	vkMapMemory(device, uniformBuffersMemory[currentImage], 0, sizeof(ubo), 0, &data);
	1815	memcpy(data, &ubo, sizeof(ubo));
	1816	vkUnmapMemory(device, uniformBuffersMemory[currentImage]);
	1817	}
	1818
[621664a]	1819	void recreateSwapChain() {
[cabdd5c]	1820	gui->refreshWindowSize();
[621664a]	1821
[cabdd5c]	1822	while (gui->getWindowWidth() == 0 \|\| gui->getWindowHeight() == 0 \|\|
[621664a]	1823	(SDL_GetWindowFlags(window) & SDL_WINDOW_MINIMIZED) != 0) {
	1824	SDL_WaitEvent(nullptr);
[cabdd5c]	1825	gui->refreshWindowSize();
[621664a]	1826	}
	1827
	1828	vkDeviceWaitIdle(device);
	1829
	1830	cleanupSwapChain();
	1831
	1832	createSwapChain();
	1833	createImageViews();
	1834	createRenderPass();
[d22ae72]	1835
[e5d4aca]	1836	createBufferResources();
	1837	}
[d22ae72]	1838
[e5d4aca]	1839	void createBufferResources() {
[adcd252]	1840	createDepthResources();
[621664a]	1841	createFramebuffers();
	1842	createUniformBuffers();
[d22ae72]	1843
[e5d4aca]	1844	createGraphicsPipeline("shaders/scene-vert.spv", "shaders/scene-frag.spv", scenePipeline);
[721e8be]	1845	createDescriptorPool(scenePipeline);
	1846	createDescriptorSets(scenePipeline);
[d22ae72]	1847
[e5d4aca]	1848	createGraphicsPipeline("shaders/overlay-vert.spv", "shaders/overlay-frag.spv", overlayPipeline);
[721e8be]	1849	createDescriptorPool(overlayPipeline);
	1850	createDescriptorSets(overlayPipeline);
[d22ae72]	1851
[621664a]	1852	createCommandBuffers();
	1853	}
	1854
[826df16]	1855	void cleanup() {
[75108ef]	1856	cleanupSwapChain();
	1857
[fba08f2]	1858	vkDestroySampler(device, textureSampler, nullptr);
[69dccfe]	1859
[fba08f2]	1860	vkDestroyImageView(device, textureImageView, nullptr);
[eea05dd]	1861	vkDestroyImage(device, textureImage, nullptr);
[f5d5686]	1862	vkFreeMemory(device, textureImageMemory, nullptr);
[eea05dd]	1863
[69dccfe]	1864	vkDestroyImageView(device, overlayImageView, nullptr);
	1865	vkDestroyImage(device, overlayImage, nullptr);
	1866	vkFreeMemory(device, overlayImageMemory, nullptr);
	1867
[e1a7f5a]	1868	vkDestroyImageView(device, sdlOverlayImageView, nullptr);
	1869	vkDestroyImage(device, sdlOverlayImage, nullptr);
	1870	vkFreeMemory(device, sdlOverlayImageMemory, nullptr);
	1871
[d22ae72]	1872	cleanupPipelineBuffers(scenePipeline);
	1873	cleanupPipelineBuffers(overlayPipeline);
[80edd70]	1874
[47bff4c]	1875	for (size_t i = 0; i < MAX_FRAMES_IN_FLIGHT; i++) {
	1876	vkDestroySemaphore(device, renderFinishedSemaphores[i], nullptr);
[621664a]	1877	vkDestroySemaphore(device, imageAvailableSemaphores[i], nullptr);
[47bff4c]	1878	vkDestroyFence(device, inFlightFences[i], nullptr);
	1879	}
	1880
	1881	vkDestroyCommandPool(device, commandPool, nullptr);
[909b51a]	1882	vkDestroyDevice(device, nullptr);
[cabdd5c]	1883	vkDestroySurfaceKHR(instance, surface, nullptr);
[909b51a]	1884
[cabdd5c]	1885	/* START OF REFACTORED CODE */
[80de39d]	1886	if (enableValidationLayers) {
	1887	DestroyDebugUtilsMessengerEXT(instance, debugMessenger, nullptr);
	1888	}
	1889
[826df16]	1890	vkDestroyInstance(instance, nullptr);
[cabdd5c]	1891	/* END OF REFACTORED CODE */
[826df16]	1892
[5f3dba8]	1893	// TODO: Check if any of these functions accept null parameters
	1894	// If they do, I don't need to check for that
	1895
	1896	if (uiOverlay != nullptr) {
	1897	SDL_DestroyTexture(uiOverlay);
	1898	uiOverlay = nullptr;
	1899	}
	1900
	1901	TTF_CloseFont(gFont);
	1902	gFont = nullptr;
	1903
	1904	if (uiText != nullptr) {
	1905	SDL_DestroyTexture(uiText);
	1906	uiText = nullptr;
	1907	}
	1908
	1909	if (uiImage != nullptr) {
	1910	SDL_DestroyTexture(uiImage);
	1911	uiImage = nullptr;
	1912	}
	1913
[cabdd5c]	1914	/* START OF REFACTORED CODE */
[5f3dba8]	1915	SDL_DestroyRenderer(gRenderer);
	1916	gRenderer = nullptr;
	1917
[7fc5e27]	1918	gui->destroyWindow();
	1919	gui->shutdown();
[98f3232]	1920	delete gui;
[cabdd5c]	1921	/* END OF REFACTORED CODE */
[826df16]	1922	}
[e09ad38]	1923
[621664a]	1924	void cleanupSwapChain() {
[adcd252]	1925	vkDestroyImageView(device, depthImageView, nullptr);
	1926	vkDestroyImage(device, depthImage, nullptr);
	1927	vkFreeMemory(device, depthImageMemory, nullptr);
	1928
[621664a]	1929	for (auto framebuffer : swapChainFramebuffers) {
	1930	vkDestroyFramebuffer(device, framebuffer, nullptr);
	1931	}
	1932
	1933	vkFreeCommandBuffers(device, commandPool, static_cast<uint32_t>(commandBuffers.size()), commandBuffers.data());
	1934
[d22ae72]	1935	cleanupPipeline(scenePipeline);
	1936	cleanupPipeline(overlayPipeline);
[b8b32bd]	1937
[621664a]	1938	vkDestroyRenderPass(device, renderPass, nullptr);
	1939
	1940	for (auto imageView : swapChainImageViews) {
	1941	vkDestroyImageView(device, imageView, nullptr);
	1942	}
	1943
	1944	vkDestroySwapchainKHR(device, swapChain, nullptr);
	1945
	1946	for (size_t i = 0; i < swapChainImages.size(); i++) {
	1947	vkDestroyBuffer(device, uniformBuffers[i], nullptr);
	1948	vkFreeMemory(device, uniformBuffersMemory[i], nullptr);
	1949	}
[d22ae72]	1950	}
	1951
	1952	void cleanupPipeline(GraphicsPipelineInfo& pipeline) {
	1953	vkDestroyPipeline(device, pipeline.pipeline, nullptr);
	1954	vkDestroyDescriptorPool(device, pipeline.descriptorPool, nullptr);
	1955	vkDestroyPipelineLayout(device, pipeline.pipelineLayout, nullptr);
	1956	}
	1957
	1958	void cleanupPipelineBuffers(GraphicsPipelineInfo& pipeline) {
	1959	vkDestroyDescriptorSetLayout(device, pipeline.descriptorSetLayout, nullptr);
[621664a]	1960
[d22ae72]	1961	vkDestroyBuffer(device, pipeline.vertexBuffer, nullptr);
	1962	vkFreeMemory(device, pipeline.vertexBufferMemory, nullptr);
	1963	vkDestroyBuffer(device, pipeline.indexBuffer, nullptr);
	1964	vkFreeMemory(device, pipeline.indexBufferMemory, nullptr);
[621664a]	1965	}
	1966
[e09ad38]	1967	static VKAPI_ATTR VkBool32 VKAPI_CALL debugCallback(
[621664a]	1968	VkDebugUtilsMessageSeverityFlagBitsEXT messageSeverity,
	1969	VkDebugUtilsMessageTypeFlagsEXT messageType,
	1970	const VkDebugUtilsMessengerCallbackDataEXT* pCallbackData,
	1971	void* pUserData) {
[e09ad38]	1972	cerr << "validation layer: " << pCallbackData->pMessage << endl;
	1973
	1974	return VK_FALSE;
[0e6ecf3]	1975	}
[e09ad38]	1976
	1977	static vector<char> readFile(const string& filename) {
	1978	ifstream file(filename, ios::ate \| ios::binary);
	1979
	1980	if (!file.is_open()) {
	1981	throw runtime_error("failed to open file!");
	1982	}
	1983
[621664a]	1984	size_t fileSize = (size_t) file.tellg();
[e09ad38]	1985	vector<char> buffer(fileSize);
	1986
	1987	file.seekg(0);
	1988	file.read(buffer.data(), fileSize);
	1989
	1990	file.close();
	1991
	1992	return buffer;
	1993	}
[826df16]	1994	};
	1995
[cabdd5c]	1996	/* START OF REFACTORED CODE */
[1c6cd5e]	1997	int main(int argc, char* argv[]) {
[826df16]	1998
[b6127d2]	1999	#ifdef NDEBUG
	2000	cout << "DEBUGGING IS OFF" << endl;
	2001	#else
	2002	cout << "DEBUGGING IS ON" << endl;
	2003	#endif
[a8f0577]	2004
[826df16]	2005	cout << "Starting Vulkan game..." << endl;
	2006
	2007	VulkanGame game;
	2008
	2009	try {
	2010	game.run();
	2011	} catch (const exception& e) {
	2012	cerr << e.what() << endl;
	2013	return EXIT_FAILURE;
	2014	}
[03f4c64]	2015
[826df16]	2016	cout << "Finished running the game" << endl;
[03f4c64]	2017
[826df16]	2018	return EXIT_SUCCESS;
[03f4c64]	2019	}
[cabdd5c]	2020	/* END OF REFACTORED CODE */

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