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source: opengl-game/vulkan-ref.cpp@ a0da009

feature/imgui-sdl points-test

Last change on this file since a0da009 was a0da009, checked in by Dmitry Portnoy <dmitry.portnoy@…>, 5 years ago
Add a window resize callback in gamegui and add an unknown event type for events that aren't currently handeld
Property mode set to `100644`
File size: 81.3 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;
	166	VkDevice device;
[b3671b5]	167
[909b51a]	168	VkQueue graphicsQueue;
[b3671b5]	169	VkQueue presentQueue;
[826df16]	170
[bfd620e]	171	VkSwapchainKHR swapChain;
	172	vector<VkImage> swapChainImages;
	173	VkFormat swapChainImageFormat;
	174	VkExtent2D swapChainExtent;
	175	vector<VkImageView> swapChainImageViews;
[f94eea9]	176	/* END OF REFACTORED CODE */
[621664a]	177	vector<VkFramebuffer> swapChainFramebuffers;
	178
[6fc24c7]	179	/* START OF REFACTORED CODE */
[be34c9a]	180	VkRenderPass renderPass;
[1187ef5]	181
[f5d5686]	182	VkCommandPool commandPool;
[fa9fa1c]	183	/* END OF REFACTORED CODE */
[1187ef5]	184	vector<VkCommandBuffer> commandBuffers;
	185
	186	// The images and the sampler are used to store data for specific attributes. I probably
	187	// want to keep them separate from the GraphicsPipelineInfo objects and start passing
	188	// references to them once I start defining uniform and varying attributes in GraphicsPipelineInfo objects
[f5d5686]	189
[adcd252]	190	VkImage depthImage;
	191	VkDeviceMemory depthImageMemory;
	192	VkImageView depthImageView;
	193
[f5d5686]	194	VkImage textureImage;
	195	VkDeviceMemory textureImageMemory;
[fba08f2]	196	VkImageView textureImageView;
[69dccfe]	197
	198	VkImage overlayImage;
	199	VkDeviceMemory overlayImageMemory;
	200	VkImageView overlayImageView;
	201
[e1a7f5a]	202	VkImage sdlOverlayImage;
	203	VkDeviceMemory sdlOverlayImageMemory;
	204	VkImageView sdlOverlayImageView;
	205
[fba08f2]	206	VkSampler textureSampler;
[f5d5686]	207
[1187ef5]	208	// These are currently to store the MVP matrix
	209	// I should figure out if it makes sense to use them for other uniforms in the future
	210	// If not, I should rename them to better indicate their puprose.
	211	// 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]	212	vector<VkBuffer> uniformBuffers;
	213	vector<VkDeviceMemory> uniformBuffersMemory;
	214
[721e8be]	215	VkDescriptorImageInfo sceneImageInfo;
	216	VkDescriptorImageInfo overlayImageInfo;
	217
	218	vector<VkDescriptorBufferInfo> uniformBufferInfoList;
	219
[1187ef5]	220	GraphicsPipelineInfo scenePipeline;
	221	GraphicsPipelineInfo overlayPipeline;
[47bff4c]	222
	223	vector<VkSemaphore> imageAvailableSemaphores;
	224	vector<VkSemaphore> renderFinishedSemaphores;
	225	vector<VkFence> inFlightFences;
	226
	227	size_t currentFrame = 0;
[ebeb3aa]	228
[0e09340]	229	/* START OF REFACTORED CODE */
[75108ef]	230	bool framebufferResized = false;
	231
[826df16]	232	bool initWindow() {
[7fc5e27]	233	if (gui->init() == RTWO_ERROR) {
[826df16]	234	cout << "UI library could not be initialized!" << endl;
[5f3dba8]	235	cout << SDL_GetError() << endl;
[826df16]	236	return RTWO_ERROR;
[5f3dba8]	237	}
	238	cout << "GUI init succeeded" << endl;
[826df16]	239
[91c89f7]	240	window = (SDL_Window*) gui->createWindow("Vulkan Game", SCREEN_WIDTH, SCREEN_HEIGHT, true);
[5f3dba8]	241	if (window == nullptr) {
	242	cout << "Window could not be created!" << endl;
	243	return RTWO_ERROR;
	244	}
	245
	246	gRenderer = SDL_CreateRenderer(window, -1, SDL_RENDERER_ACCELERATED \| SDL_RENDERER_PRESENTVSYNC);
	247	if (gRenderer == nullptr) {
	248	cout << "Renderer could not be created! SDL Error: " << SDL_GetError() << endl;
	249	return RTWO_ERROR;
	250	}
[cabdd5c]	251	/* END OF REFACTORED CODE */
[5f3dba8]	252
[c8c6da8]	253	SDL_VERSION(&sdlVersion);
	254
	255	// In SDL 2.0.10 (currently, the latest), SDL_TEXTUREACCESS_TARGET is required to get a transparent overlay working
	256	// However, the latest SDL version available through homebrew on Mac is 2.0.9, which requires SDL_TEXTUREACCESS_STREAMING
	257	// 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
	258	// until the homebrew recipe is updated
	259	if (sdlVersion.major == 2 && sdlVersion.minor == 0 && sdlVersion.patch == 9) {
	260	uiOverlay = SDL_CreateTexture(gRenderer, SDL_PIXELFORMAT_RGBA8888, SDL_TEXTUREACCESS_STREAMING, SCREEN_WIDTH, SCREEN_HEIGHT);
	261	} else {
	262	uiOverlay = SDL_CreateTexture(gRenderer, SDL_PIXELFORMAT_RGBA8888, SDL_TEXTUREACCESS_TARGET, SCREEN_WIDTH, SCREEN_HEIGHT);
	263	}
	264
[5f3dba8]	265	if (uiOverlay == nullptr) {
	266	cout << "Unable to create blank texture! SDL Error: " << SDL_GetError() << endl;
	267	}
	268	if (SDL_SetTextureBlendMode(uiOverlay, SDL_BLENDMODE_BLEND) != 0) {
	269	cout << "Unable to set texture blend mode! SDL Error: " << SDL_GetError() << endl;
	270	}
	271
	272	gFont = TTF_OpenFont("fonts/lazy.ttf", 28);
	273	if (gFont == nullptr) {
	274	cout << "Failed to load lazy font! SDL_ttf Error: " << TTF_GetError() << endl;
	275	return RTWO_ERROR;
	276	}
	277
	278	SDL_Color textColor = { 0, 0, 0 };
	279
	280	SDL_Surface* textSurface = TTF_RenderText_Solid(gFont, "Great sucess!", textColor);
	281	if (textSurface == nullptr) {
	282	cout << "Unable to render text surface! SDL_ttf Error: " << TTF_GetError() << endl;
	283	return RTWO_ERROR;
	284	}
	285
	286	uiText = SDL_CreateTextureFromSurface(gRenderer, textSurface);
	287	if (uiText == nullptr) {
	288	cout << "Unable to create texture from rendered text! SDL Error: " << SDL_GetError() << endl;
	289	SDL_FreeSurface(textSurface);
	290	return RTWO_ERROR;
	291	}
	292
	293	SDL_FreeSurface(textSurface);
	294
	295	// TODO: Load a PNG instead
	296	SDL_Surface* uiImageSurface = SDL_LoadBMP("assets/images/spaceship.bmp");
	297	if (uiImageSurface == nullptr) {
	298	cout << "Unable to load image " << "spaceship.bmp" << "! SDL Error: " << SDL_GetError() << endl;
	299	return RTWO_ERROR;
[826df16]	300	}
[5f3dba8]	301
	302	uiImage = SDL_CreateTextureFromSurface(gRenderer, uiImageSurface);
	303	if (uiImage == nullptr) {
	304	cout << "Unable to create texture from BMP surface! SDL Error: " << SDL_GetError() << endl;
	305	SDL_FreeSurface(uiImageSurface);
	306	return RTWO_ERROR;
	307	}
	308
	309	SDL_FreeSurface(uiImageSurface);
	310
	311	return RTWO_SUCCESS;
[826df16]	312	}
	313
[cabdd5c]	314	/* START OF REFACTORED CODE */
[826df16]	315	void initVulkan() {
	316	createInstance();
[7dcd925]	317	setupDebugMessenger();
[b3671b5]	318	createSurface();
[909b51a]	319	pickPhysicalDevice();
	320	createLogicalDevice();
[bfd620e]	321	createSwapChain();
	322	createImageViews();
[be34c9a]	323	createRenderPass();
[d22ae72]	324
[47bff4c]	325	createCommandPool();
[fa9fa1c]	326	/* END OF REFACTORED CODE */
[1187ef5]	327
[a0da009]	328	// THIS SECTION IS WHERE TEXTURES ARE CREATED, MAYBE SPLIT IT OFF INTO A SEPARATE FUNCTION
	329	// MAY WANT TO CREATE A STRUCT TO HOLD SIMILAR VARIABLES< LIKE THOSE FOR A TEXTURE
	330
[69dccfe]	331	createImageResources("textures/texture.jpg", textureImage, textureImageMemory, textureImageView);
[e1a7f5a]	332	createImageResourcesFromSDLTexture(uiOverlay, sdlOverlayImage, sdlOverlayImageMemory, sdlOverlayImageView);
[fba08f2]	333	createTextureSampler();
[c8b0357]	334
[721e8be]	335	sceneImageInfo = {};
	336	sceneImageInfo.imageLayout = VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL;
	337	sceneImageInfo.imageView = textureImageView;
	338	sceneImageInfo.sampler = textureSampler;
	339
	340	overlayImageInfo = {};
	341	overlayImageInfo.imageLayout = VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL;
	342	overlayImageInfo.imageView = sdlOverlayImageView;
	343	overlayImageInfo.sampler = textureSampler;
	344
[a0da009]	345	// SHADER-SPECIFIC STUFF STARTS HERE
	346
[f00ee54]	347	vector<Vertex> sceneVertices = {
[c8b0357]	348	{{-0.5f, -0.5f, -0.5f}, {1.0f, 0.0f, 0.0f}, {0.0f, 1.0f}},
	349	{{ 0.5f, -0.5f, -0.5f}, {0.0f, 1.0f, 0.0f}, {1.0f, 1.0f}},
	350	{{ 0.5f, 0.5f, -0.5f}, {0.0f, 0.0f, 1.0f}, {1.0f, 0.0f}},
	351	{{-0.5f, 0.5f, -0.5f}, {1.0f, 1.0f, 1.0f}, {0.0f, 0.0f}},
	352
	353	{{-0.5f, -0.5f, 0.0f}, {1.0f, 0.0f, 0.0f}, {0.0f, 1.0f}},
	354	{{ 0.5f, -0.5f, 0.0f}, {0.0f, 1.0f, 0.0f}, {1.0f, 1.0f}},
	355	{{ 0.5f, 0.5f, 0.0f}, {0.0f, 0.0f, 1.0f}, {1.0f, 0.0f}},
	356	{{-0.5f, 0.5f, 0.0f}, {1.0f, 1.0f, 1.0f}, {0.0f, 0.0f}}
[f00ee54]	357	};
	358	vector<uint16_t> sceneIndices = {
[e5d4aca]	359	0, 1, 2, 2, 3, 0,
	360	4, 5, 6, 6, 7, 4
[f00ee54]	361	};
	362
	363	initGraphicsPipelineInfo(scenePipeline,
	364	sceneVertices.data(), sizeof(Vertex), sceneVertices.size(),
	365	sceneIndices.data(), sizeof(uint16_t), sceneIndices.size());
	366
	367	addAttributeDescription(scenePipeline, VK_FORMAT_R32G32B32_SFLOAT, offset_of(&Vertex::pos));
	368	addAttributeDescription(scenePipeline, VK_FORMAT_R32G32B32_SFLOAT, offset_of(&Vertex::color));
	369	addAttributeDescription(scenePipeline, VK_FORMAT_R32G32_SFLOAT, offset_of(&Vertex::texCoord));
	370
[721e8be]	371	addDescriptorInfo(scenePipeline, VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, VK_SHADER_STAGE_VERTEX_BIT, &uniformBufferInfoList, nullptr);
	372	addDescriptorInfo(scenePipeline, VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, VK_SHADER_STAGE_FRAGMENT_BIT, nullptr, &sceneImageInfo);
	373
	374	createDescriptorSetLayout(scenePipeline);
[c8b0357]	375
[f00ee54]	376
	377	vector<OverlayVertex> overlayVertices = {
	378	{{-1.0f, 1.0f, 0.0f}, {0.0f, 1.0f}},
	379	{{ 1.0f, 1.0f, 0.0f}, {1.0f, 1.0f}},
	380	{{ 1.0f, -1.0f, 0.0f}, {1.0f, 0.0f}},
	381	{{-1.0f, -1.0f, 0.0f}, {0.0f, 0.0f}}
	382	};
	383	vector<uint16_t> overlayIndices = {
	384	0, 1, 2, 2, 3, 0
	385	};
	386
	387	initGraphicsPipelineInfo(overlayPipeline,
	388	overlayVertices.data(), sizeof(OverlayVertex), overlayVertices.size(),
	389	overlayIndices.data(), sizeof(uint16_t), overlayIndices.size());
	390
	391	addAttributeDescription(overlayPipeline, VK_FORMAT_R32G32B32_SFLOAT, offset_of(&OverlayVertex::pos));
	392	addAttributeDescription(overlayPipeline, VK_FORMAT_R32G32_SFLOAT, offset_of(&OverlayVertex::texCoord));
	393
[721e8be]	394	addDescriptorInfo(overlayPipeline, VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, VK_SHADER_STAGE_FRAGMENT_BIT, nullptr, &overlayImageInfo);
	395
	396	createDescriptorSetLayout(overlayPipeline);
[c8b0357]	397
[e5d4aca]	398	createBufferResources();
[d22ae72]	399
[47bff4c]	400	createSyncObjects();
[826df16]	401	}
	402
	403	void createInstance() {
[b6127d2]	404	if (enableValidationLayers && !checkValidationLayerSupport()) {
	405	throw runtime_error("validation layers requested, but not available!");
	406	}
	407
[826df16]	408	VkApplicationInfo appInfo = {};
	409	appInfo.sType = VK_STRUCTURE_TYPE_APPLICATION_INFO;
	410	appInfo.pApplicationName = "Vulkan Game";
	411	appInfo.applicationVersion = VK_MAKE_VERSION(1, 0, 0);
	412	appInfo.pEngineName = "No Engine";
	413	appInfo.engineVersion = VK_MAKE_VERSION(1, 0, 0);
	414	appInfo.apiVersion = VK_API_VERSION_1_0;
	415
	416	VkInstanceCreateInfo createInfo = {};
	417	createInfo.sType = VK_STRUCTURE_TYPE_INSTANCE_CREATE_INFO;
	418	createInfo.pApplicationInfo = &appInfo;
	419
[a8f0577]	420	vector<const char*> extensions = getRequiredExtensions();
[b6127d2]	421	createInfo.enabledExtensionCount = static_cast<uint32_t>(extensions.size());
	422	createInfo.ppEnabledExtensionNames = extensions.data();
[826df16]	423
[8667f76]	424	cout << endl << "Extensions:" << endl;
[b3671b5]	425	for (const char* extensionName : extensions) {
	426	cout << extensionName << endl;
	427	}
	428	cout << endl;
	429
[80de39d]	430	VkDebugUtilsMessengerCreateInfoEXT debugCreateInfo;
[b6127d2]	431	if (enableValidationLayers) {
	432	createInfo.enabledLayerCount = static_cast<uint32_t>(validationLayers.size());
	433	createInfo.ppEnabledLayerNames = validationLayers.data();
[80de39d]	434
	435	populateDebugMessengerCreateInfo(debugCreateInfo);
	436	createInfo.pNext = &debugCreateInfo;
[b6127d2]	437	} else {
	438	createInfo.enabledLayerCount = 0;
[80de39d]	439
	440	createInfo.pNext = nullptr;
[b6127d2]	441	}
[826df16]	442
	443	if (vkCreateInstance(&createInfo, nullptr, &instance) != VK_SUCCESS) {
	444	throw runtime_error("failed to create instance!");
	445	}
	446	}
	447
[621664a]	448	bool checkValidationLayerSupport() {
	449	uint32_t layerCount;
	450	vkEnumerateInstanceLayerProperties(&layerCount, nullptr);
	451
	452	vector<VkLayerProperties> availableLayers(layerCount);
	453	vkEnumerateInstanceLayerProperties(&layerCount, availableLayers.data());
	454
	455	for (const char* layerName : validationLayers) {
	456	bool layerFound = false;
	457
	458	for (const auto& layerProperties : availableLayers) {
	459	if (strcmp(layerName, layerProperties.layerName) == 0) {
	460	layerFound = true;
	461	break;
	462	}
	463	}
	464
	465	if (!layerFound) {
	466	return false;
	467	}
	468	}
	469
	470	return true;
	471	}
	472
[cabdd5c]	473	/* START OF REFACTORED CODE */
[621664a]	474	vector<const char*> getRequiredExtensions() {
[7fc5e27]	475	vector<const char*> extensions = gui->getRequiredExtensions();
[621664a]	476
	477	if (enableValidationLayers) {
	478	extensions.push_back(VK_EXT_DEBUG_UTILS_EXTENSION_NAME);
	479	}
	480
	481	return extensions;
	482	}
	483
[80de39d]	484	void setupDebugMessenger() {
	485	if (!enableValidationLayers) return;
	486
	487	VkDebugUtilsMessengerCreateInfoEXT createInfo;
	488	populateDebugMessengerCreateInfo(createInfo);
[b6127d2]	489
	490	if (CreateDebugUtilsMessengerEXT(instance, &createInfo, nullptr, &debugMessenger) != VK_SUCCESS) {
[621664a]	491	throw runtime_error("failed to set up debug messenger!");
[b6127d2]	492	}
	493	}
	494
[621664a]	495	void populateDebugMessengerCreateInfo(VkDebugUtilsMessengerCreateInfoEXT& createInfo) {
	496	createInfo = {};
	497	createInfo.sType = VK_STRUCTURE_TYPE_DEBUG_UTILS_MESSENGER_CREATE_INFO_EXT;
	498	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;
	499	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;
	500	createInfo.pfnUserCallback = debugCallback;
	501	}
	502
[b3671b5]	503	void createSurface() {
[7fc5e27]	504	if (gui->createVulkanSurface(instance, &surface) == RTWO_ERROR) {
[b3671b5]	505	throw runtime_error("failed to create window surface!");
	506	}
	507	}
	508
[909b51a]	509	void pickPhysicalDevice() {
	510	uint32_t deviceCount = 0;
	511	vkEnumeratePhysicalDevices(instance, &deviceCount, nullptr);
	512
	513	if (deviceCount == 0) {
	514	throw runtime_error("failed to find GPUs with Vulkan support!");
	515	}
	516
	517	vector<VkPhysicalDevice> devices(deviceCount);
	518	vkEnumeratePhysicalDevices(instance, &deviceCount, devices.data());
	519
	520	cout << endl << "Graphics cards:" << endl;
	521	for (const VkPhysicalDevice& device : devices) {
	522	if (isDeviceSuitable(device)) {
	523	physicalDevice = device;
	524	break;
	525	}
	526	}
	527	cout << endl;
	528
	529	if (physicalDevice == VK_NULL_HANDLE) {
	530	throw runtime_error("failed to find a suitable GPU!");
	531	}
	532	}
	533
	534	bool isDeviceSuitable(VkPhysicalDevice device) {
	535	VkPhysicalDeviceProperties deviceProperties;
	536	vkGetPhysicalDeviceProperties(device, &deviceProperties);
	537
	538	cout << "Device: " << deviceProperties.deviceName << endl;
	539
	540	QueueFamilyIndices indices = findQueueFamilies(device);
[bfd620e]	541	bool extensionsSupported = checkDeviceExtensionSupport(device);
	542	bool swapChainAdequate = false;
	543
	544	if (extensionsSupported) {
	545	SwapChainSupportDetails swapChainSupport = querySwapChainSupport(device);
	546	swapChainAdequate = !swapChainSupport.formats.empty() && !swapChainSupport.presentModes.empty();
	547	}
	548
[fba08f2]	549	VkPhysicalDeviceFeatures supportedFeatures;
	550	vkGetPhysicalDeviceFeatures(device, &supportedFeatures);
	551
	552	return indices.isComplete() && extensionsSupported && swapChainAdequate && supportedFeatures.samplerAnisotropy;
[bfd620e]	553	}
	554
	555	bool checkDeviceExtensionSupport(VkPhysicalDevice device) {
	556	uint32_t extensionCount;
	557	vkEnumerateDeviceExtensionProperties(device, nullptr, &extensionCount, nullptr);
	558
	559	vector<VkExtensionProperties> availableExtensions(extensionCount);
	560	vkEnumerateDeviceExtensionProperties(device, nullptr, &extensionCount, availableExtensions.data());
	561
	562	set<string> requiredExtensions(deviceExtensions.begin(), deviceExtensions.end());
	563
	564	for (const auto& extension : availableExtensions) {
	565	requiredExtensions.erase(extension.extensionName);
	566	}
	567
	568	return requiredExtensions.empty();
[909b51a]	569	}
	570
	571	void createLogicalDevice() {
	572	QueueFamilyIndices indices = findQueueFamilies(physicalDevice);
	573
[b3671b5]	574	vector<VkDeviceQueueCreateInfo> queueCreateInfos;
	575	set<uint32_t> uniqueQueueFamilies = {indices.graphicsFamily.value(), indices.presentFamily.value()};
[909b51a]	576
	577	float queuePriority = 1.0f;
[b3671b5]	578	for (uint32_t queueFamily : uniqueQueueFamilies) {
	579	VkDeviceQueueCreateInfo queueCreateInfo = {};
	580	queueCreateInfo.sType = VK_STRUCTURE_TYPE_DEVICE_QUEUE_CREATE_INFO;
	581	queueCreateInfo.queueFamilyIndex = queueFamily;
	582	queueCreateInfo.queueCount = 1;
	583	queueCreateInfo.pQueuePriorities = &queuePriority;
	584
	585	queueCreateInfos.push_back(queueCreateInfo);
	586	}
[909b51a]	587
	588	VkPhysicalDeviceFeatures deviceFeatures = {};
[fba08f2]	589	deviceFeatures.samplerAnisotropy = VK_TRUE;
[909b51a]	590
	591	VkDeviceCreateInfo createInfo = {};
	592	createInfo.sType = VK_STRUCTURE_TYPE_DEVICE_CREATE_INFO;
[621664a]	593	createInfo.queueCreateInfoCount = static_cast<uint32_t>(queueCreateInfos.size());
[b3671b5]	594	createInfo.pQueueCreateInfos = queueCreateInfos.data();
[909b51a]	595
	596	createInfo.pEnabledFeatures = &deviceFeatures;
	597
[bfd620e]	598	createInfo.enabledExtensionCount = static_cast<uint32_t>(deviceExtensions.size());
	599	createInfo.ppEnabledExtensionNames = deviceExtensions.data();
[909b51a]	600
	601	// These fields are ignored by up-to-date Vulkan implementations,
	602	// but it's a good idea to set them for backwards compatibility
	603	if (enableValidationLayers) {
	604	createInfo.enabledLayerCount = static_cast<uint32_t>(validationLayers.size());
	605	createInfo.ppEnabledLayerNames = validationLayers.data();
	606	} else {
	607	createInfo.enabledLayerCount = 0;
	608	}
	609
	610	if (vkCreateDevice(physicalDevice, &createInfo, nullptr, &device) != VK_SUCCESS) {
	611	throw runtime_error("failed to create logical device!");
	612	}
	613
	614	vkGetDeviceQueue(device, indices.graphicsFamily.value(), 0, &graphicsQueue);
[b3671b5]	615	vkGetDeviceQueue(device, indices.presentFamily.value(), 0, &presentQueue);
[909b51a]	616	}
	617
[621664a]	618	void createSwapChain() {
	619	SwapChainSupportDetails swapChainSupport = querySwapChainSupport(physicalDevice);
[a8f0577]	620
[621664a]	621	VkSurfaceFormatKHR surfaceFormat = chooseSwapSurfaceFormat(swapChainSupport.formats);
	622	VkPresentModeKHR presentMode = chooseSwapPresentMode(swapChainSupport.presentModes);
	623	VkExtent2D extent = chooseSwapExtent(swapChainSupport.capabilities);
[a8f0577]	624
[621664a]	625	uint32_t imageCount = swapChainSupport.capabilities.minImageCount + 1;
	626	if (swapChainSupport.capabilities.maxImageCount > 0 && imageCount > swapChainSupport.capabilities.maxImageCount) {
	627	imageCount = swapChainSupport.capabilities.maxImageCount;
[a8f0577]	628	}
	629
[621664a]	630	VkSwapchainCreateInfoKHR createInfo = {};
	631	createInfo.sType = VK_STRUCTURE_TYPE_SWAPCHAIN_CREATE_INFO_KHR;
	632	createInfo.surface = surface;
	633	createInfo.minImageCount = imageCount;
	634	createInfo.imageFormat = surfaceFormat.format;
	635	createInfo.imageColorSpace = surfaceFormat.colorSpace;
	636	createInfo.imageExtent = extent;
	637	createInfo.imageArrayLayers = 1;
	638	createInfo.imageUsage = VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT;
[909b51a]	639
[621664a]	640	QueueFamilyIndices indices = findQueueFamilies(physicalDevice);
	641	uint32_t queueFamilyIndices[] = {indices.graphicsFamily.value(), indices.presentFamily.value()};
[b3671b5]	642
[621664a]	643	if (indices.graphicsFamily != indices.presentFamily) {
	644	createInfo.imageSharingMode = VK_SHARING_MODE_CONCURRENT;
	645	createInfo.queueFamilyIndexCount = 2;
	646	createInfo.pQueueFamilyIndices = queueFamilyIndices;
	647	} else {
	648	createInfo.imageSharingMode = VK_SHARING_MODE_EXCLUSIVE;
	649	createInfo.queueFamilyIndexCount = 0;
	650	createInfo.pQueueFamilyIndices = nullptr;
	651	}
[b3671b5]	652
[621664a]	653	createInfo.preTransform = swapChainSupport.capabilities.currentTransform;
	654	createInfo.compositeAlpha = VK_COMPOSITE_ALPHA_OPAQUE_BIT_KHR;
	655	createInfo.presentMode = presentMode;
	656	createInfo.clipped = VK_TRUE;
	657	createInfo.oldSwapchain = VK_NULL_HANDLE;
[909b51a]	658
[621664a]	659	if (vkCreateSwapchainKHR(device, &createInfo, nullptr, &swapChain) != VK_SUCCESS) {
	660	throw runtime_error("failed to create swap chain!");
[909b51a]	661	}
	662
[621664a]	663	vkGetSwapchainImagesKHR(device, swapChain, &imageCount, nullptr);
	664	swapChainImages.resize(imageCount);
	665	vkGetSwapchainImagesKHR(device, swapChain, &imageCount, swapChainImages.data());
	666
	667	swapChainImageFormat = surfaceFormat.format;
	668	swapChainExtent = extent;
[909b51a]	669	}
	670
[bfd620e]	671	SwapChainSupportDetails querySwapChainSupport(VkPhysicalDevice device) {
	672	SwapChainSupportDetails details;
	673
	674	vkGetPhysicalDeviceSurfaceCapabilitiesKHR(device, surface, &details.capabilities);
	675
	676	uint32_t formatCount;
	677	vkGetPhysicalDeviceSurfaceFormatsKHR(device, surface, &formatCount, nullptr);
	678
	679	if (formatCount != 0) {
	680	details.formats.resize(formatCount);
	681	vkGetPhysicalDeviceSurfaceFormatsKHR(device, surface, &formatCount, details.formats.data());
	682	}
	683
	684	uint32_t presentModeCount;
	685	vkGetPhysicalDeviceSurfacePresentModesKHR(device, surface, &presentModeCount, nullptr);
	686
	687	if (presentModeCount != 0) {
	688	details.presentModes.resize(presentModeCount);
	689	vkGetPhysicalDeviceSurfacePresentModesKHR(device, surface, &presentModeCount, details.presentModes.data());
	690	}
	691
	692	return details;
	693	}
	694
	695	VkSurfaceFormatKHR chooseSwapSurfaceFormat(const vector<VkSurfaceFormatKHR>& availableFormats) {
	696	for (const auto& availableFormat : availableFormats) {
	697	if (availableFormat.format == VK_FORMAT_B8G8R8A8_UNORM && availableFormat.colorSpace == VK_COLOR_SPACE_SRGB_NONLINEAR_KHR) {
	698	return availableFormat;
	699	}
	700	}
	701
	702	return availableFormats[0];
	703	}
	704
	705	VkPresentModeKHR chooseSwapPresentMode(const vector<VkPresentModeKHR>& availablePresentModes) {
	706	VkPresentModeKHR bestMode = VK_PRESENT_MODE_FIFO_KHR;
	707
	708	for (const auto& availablePresentMode : availablePresentModes) {
	709	if (availablePresentMode == VK_PRESENT_MODE_MAILBOX_KHR) {
	710	return availablePresentMode;
[621664a]	711	}
	712	else if (availablePresentMode == VK_PRESENT_MODE_IMMEDIATE_KHR) {
[bfd620e]	713	bestMode = availablePresentMode;
	714	}
	715	}
	716
	717	return bestMode;
	718	}
	719
	720	VkExtent2D chooseSwapExtent(const VkSurfaceCapabilitiesKHR& capabilities) {
	721	if (capabilities.currentExtent.width != numeric_limits<uint32_t>::max()) {
	722	return capabilities.currentExtent;
[cabdd5c]	723	} else {
[75108ef]	724	VkExtent2D actualExtent = {
[cabdd5c]	725	static_cast<uint32_t>(gui->getWindowWidth()),
	726	static_cast<uint32_t>(gui->getWindowHeight())
[75108ef]	727	};
[bfd620e]	728
[f00ee54]	729	actualExtent.width = std::max(capabilities.minImageExtent.width, std::min(capabilities.maxImageExtent.width, actualExtent.width));
	730	actualExtent.height = std::max(capabilities.minImageExtent.height, std::min(capabilities.maxImageExtent.height, actualExtent.height));
[bfd620e]	731
	732	return actualExtent;
	733	}
	734	}
	735
	736	void createImageViews() {
	737	swapChainImageViews.resize(swapChainImages.size());
	738
[621664a]	739	for (size_t i = 0; i < swapChainImages.size(); i++) {
[adcd252]	740	swapChainImageViews[i] = createImageView(swapChainImages[i], swapChainImageFormat, VK_IMAGE_ASPECT_COLOR_BIT);
[bfd620e]	741	}
	742	}
	743
[be34c9a]	744	void createRenderPass() {
	745	VkAttachmentDescription colorAttachment = {};
	746	colorAttachment.format = swapChainImageFormat;
	747	colorAttachment.samples = VK_SAMPLE_COUNT_1_BIT;
	748	colorAttachment.loadOp = VK_ATTACHMENT_LOAD_OP_CLEAR;
	749	colorAttachment.storeOp = VK_ATTACHMENT_STORE_OP_STORE;
	750	colorAttachment.stencilLoadOp = VK_ATTACHMENT_LOAD_OP_DONT_CARE;
	751	colorAttachment.stencilStoreOp = VK_ATTACHMENT_STORE_OP_DONT_CARE;
	752	colorAttachment.initialLayout = VK_IMAGE_LAYOUT_UNDEFINED;
	753	colorAttachment.finalLayout = VK_IMAGE_LAYOUT_PRESENT_SRC_KHR;
	754
	755	VkAttachmentReference colorAttachmentRef = {};
	756	colorAttachmentRef.attachment = 0;
	757	colorAttachmentRef.layout = VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL;
	758
[adcd252]	759	VkAttachmentDescription depthAttachment = {};
	760	depthAttachment.format = findDepthFormat();
	761	depthAttachment.samples = VK_SAMPLE_COUNT_1_BIT;
	762	depthAttachment.loadOp = VK_ATTACHMENT_LOAD_OP_CLEAR;
	763	depthAttachment.storeOp = VK_ATTACHMENT_STORE_OP_DONT_CARE;
	764	depthAttachment.stencilLoadOp = VK_ATTACHMENT_LOAD_OP_DONT_CARE;
	765	depthAttachment.stencilStoreOp = VK_ATTACHMENT_STORE_OP_DONT_CARE;
	766	depthAttachment.initialLayout = VK_IMAGE_LAYOUT_UNDEFINED;
	767	depthAttachment.finalLayout = VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL;
	768
	769	VkAttachmentReference depthAttachmentRef = {};
	770	depthAttachmentRef.attachment = 1;
	771	depthAttachmentRef.layout = VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL;
	772
[be34c9a]	773	VkSubpassDescription subpass = {};
	774	subpass.pipelineBindPoint = VK_PIPELINE_BIND_POINT_GRAPHICS;
	775	subpass.colorAttachmentCount = 1;
	776	subpass.pColorAttachments = &colorAttachmentRef;
[adcd252]	777	subpass.pDepthStencilAttachment = &depthAttachmentRef;
[be34c9a]	778
[621664a]	779	VkSubpassDependency dependency = {};
[47bff4c]	780	dependency.srcSubpass = VK_SUBPASS_EXTERNAL;
	781	dependency.dstSubpass = 0;
	782	dependency.srcStageMask = VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT;
	783	dependency.srcAccessMask = 0;
	784	dependency.dstStageMask = VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT;
	785	dependency.dstAccessMask = VK_ACCESS_COLOR_ATTACHMENT_READ_BIT \| VK_ACCESS_COLOR_ATTACHMENT_WRITE_BIT;
	786
[adcd252]	787	array<VkAttachmentDescription, 2> attachments = { colorAttachment, depthAttachment };
[be34c9a]	788	VkRenderPassCreateInfo renderPassInfo = {};
	789	renderPassInfo.sType = VK_STRUCTURE_TYPE_RENDER_PASS_CREATE_INFO;
[adcd252]	790	renderPassInfo.attachmentCount = static_cast<uint32_t>(attachments.size());
	791	renderPassInfo.pAttachments = attachments.data();
[be34c9a]	792	renderPassInfo.subpassCount = 1;
	793	renderPassInfo.pSubpasses = &subpass;
[47bff4c]	794	renderPassInfo.dependencyCount = 1;
	795	renderPassInfo.pDependencies = &dependency;
[be34c9a]	796
	797	if (vkCreateRenderPass(device, &renderPassInfo, nullptr, &renderPass) != VK_SUCCESS) {
	798	throw runtime_error("failed to create render pass!");
	799	}
	800	}
[6fc24c7]	801	/* END OF REFACTORED CODE */
[be34c9a]	802
[f00ee54]	803	void initGraphicsPipelineInfo(GraphicsPipelineInfo& info,
	804	const void* vertexData, int vertexSize, size_t numVertices,
	805	const void* indexData, int indexSize, size_t numIndices) {
	806	// Since there is only one array of vertex data, we use binding = 0
	807	// I'll probably do that for the foreseeable future
	808	// I can calculate the stride myself given info about all the varying attributes
	809
	810	info.bindingDescription.binding = 0;
	811	info.bindingDescription.stride = vertexSize;
	812	info.bindingDescription.inputRate = VK_VERTEX_INPUT_RATE_VERTEX;
	813
	814	info.numVertices = numVertices;
	815	createVertexBuffer(info, vertexData, vertexSize * numVertices);
	816
	817	info.numIndices = numIndices;
	818	createIndexBuffer(info, indexData, indexSize * numIndices);
	819	}
	820
	821	void addAttributeDescription(GraphicsPipelineInfo& info, VkFormat format, size_t offset) {
	822	VkVertexInputAttributeDescription attributeDesc = {};
	823
	824	attributeDesc.binding = 0;
	825	attributeDesc.location = info.attributeDescriptions.size();
	826	attributeDesc.format = format;
	827	attributeDesc.offset = offset;
	828
	829	info.attributeDescriptions.push_back(attributeDesc);
	830	}
	831
[721e8be]	832	void addDescriptorInfo(GraphicsPipelineInfo& info, VkDescriptorType type, VkShaderStageFlags stageFlags, vector<VkDescriptorBufferInfo>* bufferData, VkDescriptorImageInfo* imageData) {
	833	info.descriptorInfoList.push_back({ type, stageFlags, bufferData, imageData });
	834	}
	835
	836	void createDescriptorSetLayout(GraphicsPipelineInfo& info) {
	837	vector<VkDescriptorSetLayoutBinding> bindings(info.descriptorInfoList.size());
	838
	839	for (size_t i = 0; i < bindings.size(); i++) {
	840	bindings[i].binding = i;
	841	bindings[i].descriptorCount = 1;
	842	bindings[i].descriptorType = info.descriptorInfoList[i].type;
	843	bindings[i].stageFlags = info.descriptorInfoList[i].stageFlags;
	844	bindings[i].pImmutableSamplers = nullptr;
	845	}
	846
	847	VkDescriptorSetLayoutCreateInfo layoutInfo = {};
	848	layoutInfo.sType = VK_STRUCTURE_TYPE_DESCRIPTOR_SET_LAYOUT_CREATE_INFO;
	849	layoutInfo.bindingCount = static_cast<uint32_t>(bindings.size());
	850	layoutInfo.pBindings = bindings.data();
	851
	852	if (vkCreateDescriptorSetLayout(device, &layoutInfo, nullptr, &info.descriptorSetLayout) != VK_SUCCESS) {
	853	throw runtime_error("failed to create descriptor set layout!");
	854	}
	855	}
	856
[d22ae72]	857	void createGraphicsPipeline(string vertShaderFile, string fragShaderFile, GraphicsPipelineInfo& info) {
[b8b32bd]	858	auto vertShaderCode = readFile(vertShaderFile);
	859	auto fragShaderCode = readFile(fragShaderFile);
[e09ad38]	860
	861	VkShaderModule vertShaderModule = createShaderModule(vertShaderCode);
	862	VkShaderModule fragShaderModule = createShaderModule(fragShaderCode);
	863
	864	VkPipelineShaderStageCreateInfo vertShaderStageInfo = {};
	865	vertShaderStageInfo.sType = VK_STRUCTURE_TYPE_PIPELINE_SHADER_STAGE_CREATE_INFO;
	866	vertShaderStageInfo.stage = VK_SHADER_STAGE_VERTEX_BIT;
	867	vertShaderStageInfo.module = vertShaderModule;
	868	vertShaderStageInfo.pName = "main";
	869
	870	VkPipelineShaderStageCreateInfo fragShaderStageInfo = {};
	871	fragShaderStageInfo.sType = VK_STRUCTURE_TYPE_PIPELINE_SHADER_STAGE_CREATE_INFO;
	872	fragShaderStageInfo.stage = VK_SHADER_STAGE_FRAGMENT_BIT;
	873	fragShaderStageInfo.module = fragShaderModule;
	874	fragShaderStageInfo.pName = "main";
	875
	876	VkPipelineShaderStageCreateInfo shaderStages[] = { vertShaderStageInfo, fragShaderStageInfo };
	877
[84216c7]	878	VkPipelineVertexInputStateCreateInfo vertexInputInfo = {};
	879	vertexInputInfo.sType = VK_STRUCTURE_TYPE_PIPELINE_VERTEX_INPUT_STATE_CREATE_INFO;
[80edd70]	880
	881	vertexInputInfo.vertexBindingDescriptionCount = 1;
[f00ee54]	882	vertexInputInfo.vertexAttributeDescriptionCount = static_cast<uint32_t>(info.attributeDescriptions.size());
	883	vertexInputInfo.pVertexBindingDescriptions = &info.bindingDescription;
	884	vertexInputInfo.pVertexAttributeDescriptions = info.attributeDescriptions.data();
[84216c7]	885
	886	VkPipelineInputAssemblyStateCreateInfo inputAssembly = {};
	887	inputAssembly.sType = VK_STRUCTURE_TYPE_PIPELINE_INPUT_ASSEMBLY_STATE_CREATE_INFO;
	888	inputAssembly.topology = VK_PRIMITIVE_TOPOLOGY_TRIANGLE_LIST;
	889	inputAssembly.primitiveRestartEnable = VK_FALSE;
	890
	891	VkViewport viewport = {};
	892	viewport.x = 0.0f;
	893	viewport.y = 0.0f;
	894	viewport.width = (float) swapChainExtent.width;
	895	viewport.height = (float) swapChainExtent.height;
	896	viewport.minDepth = 0.0f;
	897	viewport.maxDepth = 1.0f;
	898
	899	VkRect2D scissor = {};
	900	scissor.offset = { 0, 0 };
	901	scissor.extent = swapChainExtent;
	902
	903	VkPipelineViewportStateCreateInfo viewportState = {};
	904	viewportState.sType = VK_STRUCTURE_TYPE_PIPELINE_VIEWPORT_STATE_CREATE_INFO;
	905	viewportState.viewportCount = 1;
	906	viewportState.pViewports = &viewport;
	907	viewportState.scissorCount = 1;
	908	viewportState.pScissors = &scissor;
	909
	910	VkPipelineRasterizationStateCreateInfo rasterizer = {};
	911	rasterizer.sType = VK_STRUCTURE_TYPE_PIPELINE_RASTERIZATION_STATE_CREATE_INFO;
	912	rasterizer.depthClampEnable = VK_FALSE;
	913	rasterizer.rasterizerDiscardEnable = VK_FALSE;
	914	rasterizer.polygonMode = VK_POLYGON_MODE_FILL;
	915	rasterizer.lineWidth = 1.0f;
	916	rasterizer.cullMode = VK_CULL_MODE_BACK_BIT;
[c7fb883]	917	rasterizer.frontFace = VK_FRONT_FACE_COUNTER_CLOCKWISE;
[621664a]	918	rasterizer.depthBiasEnable = VK_FALSE;
[84216c7]	919
	920	VkPipelineMultisampleStateCreateInfo multisampling = {};
	921	multisampling.sType = VK_STRUCTURE_TYPE_PIPELINE_MULTISAMPLE_STATE_CREATE_INFO;
	922	multisampling.sampleShadingEnable = VK_FALSE;
	923	multisampling.rasterizationSamples = VK_SAMPLE_COUNT_1_BIT;
	924
	925	VkPipelineColorBlendAttachmentState colorBlendAttachment = {};
	926	colorBlendAttachment.colorWriteMask = VK_COLOR_COMPONENT_R_BIT \| VK_COLOR_COMPONENT_G_BIT \| VK_COLOR_COMPONENT_B_BIT \| VK_COLOR_COMPONENT_A_BIT;
[69dccfe]	927	colorBlendAttachment.blendEnable = VK_TRUE;
	928	colorBlendAttachment.colorBlendOp = VK_BLEND_OP_ADD;
	929	colorBlendAttachment.srcColorBlendFactor = VK_BLEND_FACTOR_SRC_ALPHA;
	930	colorBlendAttachment.dstColorBlendFactor = VK_BLEND_FACTOR_ONE_MINUS_SRC_ALPHA;
	931	colorBlendAttachment.alphaBlendOp = VK_BLEND_OP_ADD;
	932	colorBlendAttachment.srcAlphaBlendFactor = VK_BLEND_FACTOR_SRC_ALPHA;
	933	colorBlendAttachment.dstAlphaBlendFactor = VK_BLEND_FACTOR_ONE_MINUS_SRC_ALPHA;
[84216c7]	934
	935	VkPipelineColorBlendStateCreateInfo colorBlending = {};
	936	colorBlending.sType = VK_STRUCTURE_TYPE_PIPELINE_COLOR_BLEND_STATE_CREATE_INFO;
	937	colorBlending.logicOpEnable = VK_FALSE;
	938	colorBlending.logicOp = VK_LOGIC_OP_COPY;
	939	colorBlending.attachmentCount = 1;
	940	colorBlending.pAttachments = &colorBlendAttachment;
	941	colorBlending.blendConstants[0] = 0.0f;
	942	colorBlending.blendConstants[1] = 0.0f;
	943	colorBlending.blendConstants[2] = 0.0f;
	944	colorBlending.blendConstants[3] = 0.0f;
	945
[adcd252]	946	VkPipelineDepthStencilStateCreateInfo depthStencil = {};
	947	depthStencil.sType = VK_STRUCTURE_TYPE_PIPELINE_DEPTH_STENCIL_STATE_CREATE_INFO;
	948	depthStencil.depthTestEnable = VK_TRUE;
	949	depthStencil.depthWriteEnable = VK_TRUE;
	950	depthStencil.depthCompareOp = VK_COMPARE_OP_LESS;
	951	depthStencil.depthBoundsTestEnable = VK_FALSE;
	952	depthStencil.minDepthBounds = 0.0f;
	953	depthStencil.maxDepthBounds = 1.0f;
	954	depthStencil.stencilTestEnable = VK_FALSE;
	955	depthStencil.front = {};
	956	depthStencil.back = {};
	957
[84216c7]	958	VkPipelineLayoutCreateInfo pipelineLayoutInfo = {};
	959	pipelineLayoutInfo.sType = VK_STRUCTURE_TYPE_PIPELINE_LAYOUT_CREATE_INFO;
[de32fda]	960	pipelineLayoutInfo.setLayoutCount = 1;
[d22ae72]	961	pipelineLayoutInfo.pSetLayouts = &info.descriptorSetLayout;
[84216c7]	962	pipelineLayoutInfo.pushConstantRangeCount = 0;
	963
[d22ae72]	964	if (vkCreatePipelineLayout(device, &pipelineLayoutInfo, nullptr, &info.pipelineLayout) != VK_SUCCESS) {
[84216c7]	965	throw runtime_error("failed to create pipeline layout!");
	966	}
	967
[fd70015]	968	VkGraphicsPipelineCreateInfo pipelineInfo = {};
	969	pipelineInfo.sType = VK_STRUCTURE_TYPE_GRAPHICS_PIPELINE_CREATE_INFO;
	970	pipelineInfo.stageCount = 2;
	971	pipelineInfo.pStages = shaderStages;
	972	pipelineInfo.pVertexInputState = &vertexInputInfo;
	973	pipelineInfo.pInputAssemblyState = &inputAssembly;
	974	pipelineInfo.pViewportState = &viewportState;
	975	pipelineInfo.pRasterizationState = &rasterizer;
	976	pipelineInfo.pMultisampleState = &multisampling;
[adcd252]	977	pipelineInfo.pDepthStencilState = &depthStencil;
[fd70015]	978	pipelineInfo.pColorBlendState = &colorBlending;
	979	pipelineInfo.pDynamicState = nullptr;
[d22ae72]	980	pipelineInfo.layout = info.pipelineLayout;
[fd70015]	981	pipelineInfo.renderPass = renderPass;
	982	pipelineInfo.subpass = 0;
	983	pipelineInfo.basePipelineHandle = VK_NULL_HANDLE;
	984	pipelineInfo.basePipelineIndex = -1;
	985
[d22ae72]	986	if (vkCreateGraphicsPipelines(device, VK_NULL_HANDLE, 1, &pipelineInfo, nullptr, &info.pipeline) != VK_SUCCESS) {
[fd70015]	987	throw runtime_error("failed to create graphics pipeline!");
	988	}
	989
[e09ad38]	990	vkDestroyShaderModule(device, vertShaderModule, nullptr);
	991	vkDestroyShaderModule(device, fragShaderModule, nullptr);
	992	}
	993
	994	VkShaderModule createShaderModule(const vector<char>& code) {
	995	VkShaderModuleCreateInfo createInfo = {};
	996	createInfo.sType = VK_STRUCTURE_TYPE_SHADER_MODULE_CREATE_INFO;
	997	createInfo.codeSize = code.size();
	998	createInfo.pCode = reinterpret_cast<const uint32_t*>(code.data());
	999
	1000	VkShaderModule shaderModule;
	1001	if (vkCreateShaderModule(device, &createInfo, nullptr, &shaderModule) != VK_SUCCESS) {
	1002	throw runtime_error("failed to create shader module!");
	1003	}
	1004
	1005	return shaderModule;
[4befb76]	1006	}
	1007
[ebeb3aa]	1008	void createFramebuffers() {
	1009	swapChainFramebuffers.resize(swapChainImageViews.size());
	1010
	1011	for (size_t i = 0; i < swapChainImageViews.size(); i++) {
[adcd252]	1012	array <VkImageView, 2> attachments = {
	1013	swapChainImageViews[i],
	1014	depthImageView
[ebeb3aa]	1015	};
	1016
	1017	VkFramebufferCreateInfo framebufferInfo = {};
	1018	framebufferInfo.sType = VK_STRUCTURE_TYPE_FRAMEBUFFER_CREATE_INFO;
	1019	framebufferInfo.renderPass = renderPass;
[adcd252]	1020	framebufferInfo.attachmentCount = static_cast<uint32_t>(attachments.size());
	1021	framebufferInfo.pAttachments = attachments.data();
[ebeb3aa]	1022	framebufferInfo.width = swapChainExtent.width;
	1023	framebufferInfo.height = swapChainExtent.height;
	1024	framebufferInfo.layers = 1;
	1025
	1026	if (vkCreateFramebuffer(device, &framebufferInfo, nullptr, &swapChainFramebuffers[i]) != VK_SUCCESS) {
	1027	throw runtime_error("failed to create framebuffer!");
	1028	}
	1029	}
	1030	}
	1031
[fa9fa1c]	1032	/* START OF REFACTORED CODE */
[47bff4c]	1033	void createCommandPool() {
	1034	QueueFamilyIndices queueFamilyIndices = findQueueFamilies(physicalDevice);
	1035
	1036	VkCommandPoolCreateInfo poolInfo = {};
	1037	poolInfo.sType = VK_STRUCTURE_TYPE_COMMAND_POOL_CREATE_INFO;
	1038	poolInfo.queueFamilyIndex = queueFamilyIndices.graphicsFamily.value();
	1039	poolInfo.flags = 0;
	1040
	1041	if (vkCreateCommandPool(device, &poolInfo, nullptr, &commandPool) != VK_SUCCESS) {
[621664a]	1042	throw runtime_error("failed to create graphics command pool!");
[47bff4c]	1043	}
	1044	}
	1045
[621664a]	1046	QueueFamilyIndices findQueueFamilies(VkPhysicalDevice device) {
	1047	QueueFamilyIndices indices;
	1048
	1049	uint32_t queueFamilyCount = 0;
	1050	vkGetPhysicalDeviceQueueFamilyProperties(device, &queueFamilyCount, nullptr);
	1051
	1052	vector<VkQueueFamilyProperties> queueFamilies(queueFamilyCount);
	1053	vkGetPhysicalDeviceQueueFamilyProperties(device, &queueFamilyCount, queueFamilies.data());
	1054
	1055	int i = 0;
	1056	for (const auto& queueFamily : queueFamilies) {
	1057	if (queueFamily.queueCount > 0 && queueFamily.queueFlags & VK_QUEUE_GRAPHICS_BIT) {
	1058	indices.graphicsFamily = i;
	1059	}
	1060
	1061	VkBool32 presentSupport = false;
	1062	vkGetPhysicalDeviceSurfaceSupportKHR(device, i, surface, &presentSupport);
	1063
	1064	if (queueFamily.queueCount > 0 && presentSupport) {
	1065	indices.presentFamily = i;
	1066	}
	1067
	1068	if (indices.isComplete()) {
	1069	break;
	1070	}
	1071
	1072	i++;
	1073	}
	1074
	1075	return indices;
	1076	}
[90a424f]	1077	/* END OF REFACTORED CODE */
[621664a]	1078
[adcd252]	1079	void createDepthResources() {
	1080	VkFormat depthFormat = findDepthFormat();
	1081
	1082	createImage(swapChainExtent.width, swapChainExtent.height, depthFormat, VK_IMAGE_TILING_OPTIMAL,
	1083	VK_IMAGE_USAGE_DEPTH_STENCIL_ATTACHMENT_BIT, VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT, depthImage, depthImageMemory);
	1084	depthImageView = createImageView(depthImage, depthFormat, VK_IMAGE_ASPECT_DEPTH_BIT);
	1085
	1086	transitionImageLayout(depthImage, depthFormat, VK_IMAGE_LAYOUT_UNDEFINED, VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL);
	1087	}
	1088
[6fc24c7]	1089	/* START OF REFACTORED CODE */
[adcd252]	1090	VkFormat findDepthFormat() {
	1091	return findSupportedFormat(
	1092	{ VK_FORMAT_D32_SFLOAT, VK_FORMAT_D32_SFLOAT_S8_UINT, VK_FORMAT_D24_UNORM_S8_UINT },
	1093	VK_IMAGE_TILING_OPTIMAL,
	1094	VK_FORMAT_FEATURE_DEPTH_STENCIL_ATTACHMENT_BIT
	1095	);
	1096	}
	1097
	1098	VkFormat findSupportedFormat(const vector<VkFormat>& candidates, VkImageTiling tiling,
	1099	VkFormatFeatureFlags features) {
	1100	for (VkFormat format : candidates) {
	1101	VkFormatProperties props;
	1102	vkGetPhysicalDeviceFormatProperties(physicalDevice, format, &props);
	1103
	1104	if (tiling == VK_IMAGE_TILING_LINEAR &&
	1105	(props.linearTilingFeatures & features) == features) {
	1106	return format;
	1107	} else if (tiling == VK_IMAGE_TILING_OPTIMAL &&
	1108	(props.optimalTilingFeatures & features) == features) {
	1109	return format;
	1110	}
	1111	}
	1112
	1113	throw runtime_error("failed to find supported format!");
	1114	}
[6fc24c7]	1115	/* END OF REFACTORED CODE */
[adcd252]	1116
	1117	bool hasStencilComponent(VkFormat format) {
	1118	return format == VK_FORMAT_D32_SFLOAT_S8_UINT \|\| format == VK_FORMAT_D24_UNORM_S8_UINT;
	1119	}
	1120
[69dccfe]	1121	void createImageResources(string filename, VkImage& image, VkDeviceMemory& imageMemory, VkImageView& view) {
[eea05dd]	1122	int texWidth, texHeight, texChannels;
	1123
[69dccfe]	1124	stbi_uc* pixels = stbi_load(filename.c_str(), &texWidth, &texHeight, &texChannels, STBI_rgb_alpha);
[eea05dd]	1125	VkDeviceSize imageSize = texWidth * texHeight * 4;
	1126
	1127	if (!pixels) {
	1128	throw runtime_error("failed to load texture image!");
	1129	}
	1130
	1131	VkBuffer stagingBuffer;
	1132	VkDeviceMemory stagingBufferMemory;
	1133
	1134	createBuffer(imageSize, VK_BUFFER_USAGE_TRANSFER_SRC_BIT,
	1135	VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT \| VK_MEMORY_PROPERTY_HOST_COHERENT_BIT,
	1136	stagingBuffer, stagingBufferMemory);
	1137
	1138	void* data;
	1139
	1140	vkMapMemory(device, stagingBufferMemory, 0, imageSize, 0, &data);
	1141	memcpy(data, pixels, static_cast<size_t>(imageSize));
	1142	vkUnmapMemory(device, stagingBufferMemory);
	1143
	1144	stbi_image_free(pixels);
	1145
	1146	createImage(texWidth, texHeight, VK_FORMAT_R8G8B8A8_UNORM, VK_IMAGE_TILING_OPTIMAL,
	1147	VK_IMAGE_USAGE_TRANSFER_DST_BIT \| VK_IMAGE_USAGE_SAMPLED_BIT,
[69dccfe]	1148	VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT, image, imageMemory);
[eea05dd]	1149
[69dccfe]	1150	transitionImageLayout(image, VK_FORMAT_R8G8B8A8_UNORM, VK_IMAGE_LAYOUT_UNDEFINED, VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL);
	1151	copyBufferToImage(stagingBuffer, image, static_cast<uint32_t>(texWidth), static_cast<uint32_t>(texHeight));
	1152	transitionImageLayout(image, VK_FORMAT_R8G8B8A8_UNORM, VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL, VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL);
[eea05dd]	1153
	1154	vkDestroyBuffer(device, stagingBuffer, nullptr);
[f5d5686]	1155	vkFreeMemory(device, stagingBufferMemory, nullptr);
[69dccfe]	1156
	1157	view = createImageView(image, VK_FORMAT_R8G8B8A8_UNORM, VK_IMAGE_ASPECT_COLOR_BIT);
[eea05dd]	1158	}
	1159
[e1a7f5a]	1160	void createImageResourcesFromSDLTexture(SDL_Texture* texture, VkImage& image, VkDeviceMemory& imageMemory, VkImageView& view) {
	1161	int a, w, h;
	1162
	1163	// I only need this here for the width and height, which are constants, so just use those instead
	1164	SDL_QueryTexture(texture, nullptr, &a, &w, &h);
	1165
	1166	createImage(w, h, VK_FORMAT_R8G8B8A8_UNORM, VK_IMAGE_TILING_OPTIMAL,
	1167	VK_IMAGE_USAGE_TRANSFER_DST_BIT \| VK_IMAGE_USAGE_SAMPLED_BIT,
	1168	VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT, image, imageMemory);
	1169
	1170	view = createImageView(image, VK_FORMAT_R8G8B8A8_UNORM, VK_IMAGE_ASPECT_COLOR_BIT);
	1171	}
	1172
	1173	void populateImageFromSDLTexture(SDL_Texture* texture, VkImage& image) {
[f00ee54]	1174	int a, w, h;
[e1a7f5a]	1175
	1176	SDL_QueryTexture(texture, nullptr, &a, &w, &h);
	1177
	1178	VkDeviceSize imageSize = w * h * 4;
	1179	unsigned char* pixels = new unsigned char[imageSize];
	1180
	1181	SDL_RenderReadPixels(gRenderer, nullptr, SDL_PIXELFORMAT_ABGR8888, pixels, w * 4);
	1182
	1183	VkBuffer stagingBuffer;
	1184	VkDeviceMemory stagingBufferMemory;
	1185
	1186	createBuffer(imageSize,
	1187	VK_BUFFER_USAGE_TRANSFER_DST_BIT \| VK_BUFFER_USAGE_TRANSFER_SRC_BIT,
	1188	VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT,
	1189	stagingBuffer, stagingBufferMemory);
	1190
	1191	void* data;
	1192
	1193	vkMapMemory(device, stagingBufferMemory, 0, VK_WHOLE_SIZE, 0, &data);
	1194	memcpy(data, pixels, static_cast<size_t>(imageSize));
	1195
	1196	VkMappedMemoryRange mappedMemoryRange = {};
	1197	mappedMemoryRange.sType = VK_STRUCTURE_TYPE_MAPPED_MEMORY_RANGE;
	1198	mappedMemoryRange.memory = stagingBufferMemory;
	1199	mappedMemoryRange.offset = 0;
	1200	mappedMemoryRange.size = VK_WHOLE_SIZE;
	1201
	1202	// TODO: Should probably check that the function succeeded
	1203	vkFlushMappedMemoryRanges(device, 1, &mappedMemoryRange);
	1204	vkUnmapMemory(device, stagingBufferMemory);
	1205
[8a40f4b]	1206	delete[] pixels;
	1207
[e1a7f5a]	1208	transitionImageLayout(image, VK_FORMAT_R8G8B8A8_UNORM, VK_IMAGE_LAYOUT_UNDEFINED, VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL);
	1209	copyBufferToImage(stagingBuffer, image, static_cast<uint32_t>(w), static_cast<uint32_t>(h));
	1210	transitionImageLayout(image, VK_FORMAT_R8G8B8A8_UNORM, VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL, VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL);
	1211
	1212	vkDestroyBuffer(device, stagingBuffer, nullptr);
	1213	vkFreeMemory(device, stagingBufferMemory, nullptr);
	1214	}
	1215
[621664a]	1216	void createImage(uint32_t width, uint32_t height, VkFormat format, VkImageTiling tiling, VkImageUsageFlags usage,
	1217	VkMemoryPropertyFlags properties, VkImage& image, VkDeviceMemory& imageMemory) {
[eea05dd]	1218	VkImageCreateInfo imageInfo = {};
	1219	imageInfo.sType = VK_STRUCTURE_TYPE_IMAGE_CREATE_INFO;
	1220	imageInfo.imageType = VK_IMAGE_TYPE_2D;
	1221	imageInfo.extent.width = width;
	1222	imageInfo.extent.height = height;
	1223	imageInfo.extent.depth = 1;
	1224	imageInfo.mipLevels = 1;
	1225	imageInfo.arrayLayers = 1;
	1226	imageInfo.format = format;
	1227	imageInfo.tiling = tiling;
	1228	imageInfo.initialLayout = VK_IMAGE_LAYOUT_UNDEFINED;
	1229	imageInfo.usage = usage;
	1230	imageInfo.samples = VK_SAMPLE_COUNT_1_BIT;
	1231	imageInfo.sharingMode = VK_SHARING_MODE_EXCLUSIVE;
	1232
	1233	if (vkCreateImage(device, &imageInfo, nullptr, &image) != VK_SUCCESS) {
	1234	throw runtime_error("failed to create image!");
	1235	}
	1236
	1237	VkMemoryRequirements memRequirements;
	1238	vkGetImageMemoryRequirements(device, image, &memRequirements);
	1239
[621664a]	1240	VkMemoryAllocateInfo allocInfo = {};
[eea05dd]	1241	allocInfo.sType = VK_STRUCTURE_TYPE_MEMORY_ALLOCATE_INFO;
	1242	allocInfo.allocationSize = memRequirements.size;
	1243	allocInfo.memoryTypeIndex = findMemoryType(memRequirements.memoryTypeBits, properties);
	1244
	1245	if (vkAllocateMemory(device, &allocInfo, nullptr, &imageMemory) != VK_SUCCESS) {
	1246	throw runtime_error("failed to allocate image memory!");
	1247	}
	1248
	1249	vkBindImageMemory(device, image, imageMemory, 0);
	1250	}
	1251
[621664a]	1252	void transitionImageLayout(VkImage image, VkFormat format, VkImageLayout oldLayout, VkImageLayout newLayout) {
[eea05dd]	1253	VkCommandBuffer commandBuffer = beginSingleTimeCommands();
	1254
	1255	VkImageMemoryBarrier barrier = {};
	1256	barrier.sType = VK_STRUCTURE_TYPE_IMAGE_MEMORY_BARRIER;
	1257	barrier.oldLayout = oldLayout;
	1258	barrier.newLayout = newLayout;
	1259	barrier.srcQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED;
	1260	barrier.dstQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED;
	1261	barrier.image = image;
[adcd252]	1262
	1263	if (newLayout == VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL) {
	1264	barrier.subresourceRange.aspectMask = VK_IMAGE_ASPECT_DEPTH_BIT;
	1265
	1266	if (hasStencilComponent(format)) {
	1267	barrier.subresourceRange.aspectMask \|= VK_IMAGE_ASPECT_STENCIL_BIT;
	1268	}
	1269	} else {
	1270	barrier.subresourceRange.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT;
	1271	}
	1272
[eea05dd]	1273	barrier.subresourceRange.baseMipLevel = 0;
	1274	barrier.subresourceRange.levelCount = 1;
	1275	barrier.subresourceRange.baseArrayLayer = 0;
	1276	barrier.subresourceRange.layerCount = 1;
[f5d5686]	1277
	1278	VkPipelineStageFlags sourceStage;
	1279	VkPipelineStageFlags destinationStage;
[eea05dd]	1280
	1281	if (oldLayout == VK_IMAGE_LAYOUT_UNDEFINED && newLayout == VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL) {
	1282	barrier.srcAccessMask = 0;
	1283	barrier.dstAccessMask = VK_ACCESS_TRANSFER_WRITE_BIT;
	1284
	1285	sourceStage = VK_PIPELINE_STAGE_TOP_OF_PIPE_BIT;
	1286	destinationStage = VK_PIPELINE_STAGE_TRANSFER_BIT;
	1287	} else if (oldLayout == VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL && newLayout == VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL) {
	1288	barrier.srcAccessMask = VK_ACCESS_TRANSFER_WRITE_BIT;
	1289	barrier.dstAccessMask = VK_ACCESS_SHADER_READ_BIT;
	1290
	1291	sourceStage = VK_PIPELINE_STAGE_TRANSFER_BIT;
	1292	destinationStage = VK_PIPELINE_STAGE_FRAGMENT_SHADER_BIT;
[adcd252]	1293	} else if (oldLayout == VK_IMAGE_LAYOUT_UNDEFINED && newLayout == VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL) {
	1294	barrier.srcAccessMask = 0;
	1295	barrier.dstAccessMask = VK_ACCESS_DEPTH_STENCIL_ATTACHMENT_READ_BIT \| VK_ACCESS_DEPTH_STENCIL_ATTACHMENT_WRITE_BIT;
	1296
	1297	sourceStage = VK_PIPELINE_STAGE_TOP_OF_PIPE_BIT;
	1298	destinationStage = VK_PIPELINE_STAGE_EARLY_FRAGMENT_TESTS_BIT;
[eea05dd]	1299	} else {
	1300	throw invalid_argument("unsupported layout transition!");
	1301	}
	1302
	1303	vkCmdPipelineBarrier(
	1304	commandBuffer,
[f5d5686]	1305	sourceStage, destinationStage,
[eea05dd]	1306	0,
	1307	0, nullptr,
	1308	0, nullptr,
	1309	1, &barrier
	1310	);
	1311
	1312	endSingleTimeCommands(commandBuffer);
	1313	}
	1314
	1315	void copyBufferToImage(VkBuffer buffer, VkImage image, uint32_t width, uint32_t height) {
	1316	VkCommandBuffer commandBuffer = beginSingleTimeCommands();
	1317
	1318	VkBufferImageCopy region = {};
	1319	region.bufferOffset = 0;
	1320	region.bufferRowLength = 0;
	1321	region.bufferImageHeight = 0;
	1322	region.imageSubresource.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT;
	1323	region.imageSubresource.mipLevel = 0;
	1324	region.imageSubresource.baseArrayLayer = 0;
	1325	region.imageSubresource.layerCount = 1;
	1326	region.imageOffset = { 0, 0, 0 };
	1327	region.imageExtent = { width, height, 1 };
	1328
	1329	vkCmdCopyBufferToImage(
	1330	commandBuffer,
	1331	buffer,
	1332	image,
	1333	VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL,
	1334	1,
	1335	&region
	1336	);
	1337
	1338	endSingleTimeCommands(commandBuffer);
	1339	}
	1340
[f94eea9]	1341	/* START OF REFACTORED CODE */
[adcd252]	1342	VkImageView createImageView(VkImage image, VkFormat format, VkImageAspectFlags aspectFlags) {
[fba08f2]	1343	VkImageViewCreateInfo viewInfo = {};
	1344	viewInfo.sType = VK_STRUCTURE_TYPE_IMAGE_VIEW_CREATE_INFO;
	1345	viewInfo.image = image;
	1346	viewInfo.viewType = VK_IMAGE_VIEW_TYPE_2D;
	1347	viewInfo.format = format;
	1348
	1349	viewInfo.components.r = VK_COMPONENT_SWIZZLE_IDENTITY;
	1350	viewInfo.components.g = VK_COMPONENT_SWIZZLE_IDENTITY;
	1351	viewInfo.components.b = VK_COMPONENT_SWIZZLE_IDENTITY;
	1352	viewInfo.components.a = VK_COMPONENT_SWIZZLE_IDENTITY;
	1353
[adcd252]	1354	viewInfo.subresourceRange.aspectMask = aspectFlags;
[fba08f2]	1355	viewInfo.subresourceRange.baseMipLevel = 0;
	1356	viewInfo.subresourceRange.levelCount = 1;
	1357	viewInfo.subresourceRange.baseArrayLayer = 0;
	1358	viewInfo.subresourceRange.layerCount = 1;
	1359
	1360	VkImageView imageView;
	1361	if (vkCreateImageView(device, &viewInfo, nullptr, &imageView) != VK_SUCCESS) {
	1362	throw runtime_error("failed to create texture image view!");
	1363	}
	1364
	1365	return imageView;
	1366	}
[f94eea9]	1367	/* END OF REFACTORED CODE */
[fba08f2]	1368
	1369	void createTextureSampler() {
	1370	VkSamplerCreateInfo samplerInfo = {};
	1371	samplerInfo.sType = VK_STRUCTURE_TYPE_SAMPLER_CREATE_INFO;
	1372	samplerInfo.magFilter = VK_FILTER_LINEAR;
	1373	samplerInfo.minFilter = VK_FILTER_LINEAR;
	1374
	1375	samplerInfo.addressModeU = VK_SAMPLER_ADDRESS_MODE_REPEAT;
	1376	samplerInfo.addressModeV = VK_SAMPLER_ADDRESS_MODE_REPEAT;
	1377	samplerInfo.addressModeW = VK_SAMPLER_ADDRESS_MODE_REPEAT;
	1378
	1379	samplerInfo.anisotropyEnable = VK_TRUE;
	1380	samplerInfo.maxAnisotropy = 16;
	1381	samplerInfo.borderColor = VK_BORDER_COLOR_INT_OPAQUE_BLACK;
	1382	samplerInfo.unnormalizedCoordinates = VK_FALSE;
	1383	samplerInfo.compareEnable = VK_FALSE;
	1384	samplerInfo.compareOp = VK_COMPARE_OP_ALWAYS;
	1385	samplerInfo.mipmapMode = VK_SAMPLER_MIPMAP_MODE_LINEAR;
	1386	samplerInfo.mipLodBias = 0.0f;
	1387	samplerInfo.minLod = 0.0f;
	1388	samplerInfo.maxLod = 0.0f;
	1389
	1390	if (vkCreateSampler(device, &samplerInfo, nullptr, &textureSampler) != VK_SUCCESS) {
	1391	throw runtime_error("failed to create texture sampler!");
	1392	}
	1393	}
	1394
[f00ee54]	1395	void createVertexBuffer(GraphicsPipelineInfo& info, const void* vertexData, VkDeviceSize bufferSize) {
[d9ef6ab]	1396	VkBuffer stagingBuffer;
	1397	VkDeviceMemory stagingBufferMemory;
[621664a]	1398	createBuffer(bufferSize, VK_BUFFER_USAGE_TRANSFER_SRC_BIT,
[d9ef6ab]	1399	VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT \| VK_MEMORY_PROPERTY_HOST_COHERENT_BIT,
	1400	stagingBuffer, stagingBufferMemory);
	1401
	1402	void* data;
	1403	vkMapMemory(device, stagingBufferMemory, 0, bufferSize, 0, &data);
[f00ee54]	1404	memcpy(data, vertexData, (size_t) bufferSize);
[d9ef6ab]	1405	vkUnmapMemory(device, stagingBufferMemory);
	1406
	1407	createBuffer(bufferSize, VK_BUFFER_USAGE_TRANSFER_DST_BIT \| VK_BUFFER_USAGE_VERTEX_BUFFER_BIT,
[f00ee54]	1408	VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT, info.vertexBuffer, info.vertexBufferMemory);
[d9ef6ab]	1409
[f00ee54]	1410	copyBuffer(stagingBuffer, info.vertexBuffer, bufferSize);
[d9ef6ab]	1411
	1412	vkDestroyBuffer(device, stagingBuffer, nullptr);
	1413	vkFreeMemory(device, stagingBufferMemory, nullptr);
	1414	}
	1415
[f00ee54]	1416	void createIndexBuffer(GraphicsPipelineInfo& info, const void* indexData, VkDeviceSize bufferSize) {
[cae7a2c]	1417	VkBuffer stagingBuffer;
	1418	VkDeviceMemory stagingBufferMemory;
	1419	createBuffer(bufferSize, VK_BUFFER_USAGE_TRANSFER_SRC_BIT,
	1420	VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT \| VK_MEMORY_PROPERTY_HOST_COHERENT_BIT,
	1421	stagingBuffer, stagingBufferMemory);
	1422
	1423	void* data;
	1424	vkMapMemory(device, stagingBufferMemory, 0, bufferSize, 0, &data);
[f00ee54]	1425	memcpy(data, indexData, (size_t) bufferSize);
[cae7a2c]	1426	vkUnmapMemory(device, stagingBufferMemory);
	1427
	1428	createBuffer(bufferSize, VK_BUFFER_USAGE_TRANSFER_DST_BIT \| VK_BUFFER_USAGE_INDEX_BUFFER_BIT,
[f00ee54]	1429	VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT, info.indexBuffer, info.indexBufferMemory);
[cae7a2c]	1430
[f00ee54]	1431	copyBuffer(stagingBuffer, info.indexBuffer, bufferSize);
[cae7a2c]	1432
	1433	vkDestroyBuffer(device, stagingBuffer, nullptr);
	1434	vkFreeMemory(device, stagingBufferMemory, nullptr);
	1435	}
	1436
[621664a]	1437	void createUniformBuffers() {
	1438	VkDeviceSize bufferSize = sizeof(UniformBufferObject);
	1439
	1440	uniformBuffers.resize(swapChainImages.size());
	1441	uniformBuffersMemory.resize(swapChainImages.size());
[721e8be]	1442	uniformBufferInfoList.resize(swapChainImages.size());
[621664a]	1443
	1444	for (size_t i = 0; i < swapChainImages.size(); i++) {
	1445	createBuffer(bufferSize, VK_BUFFER_USAGE_UNIFORM_BUFFER_BIT,
	1446	VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT \| VK_MEMORY_PROPERTY_HOST_COHERENT_BIT,
	1447	uniformBuffers[i], uniformBuffersMemory[i]);
[721e8be]	1448
	1449	uniformBufferInfoList[i].buffer = uniformBuffers[i];
	1450	uniformBufferInfoList[i].offset = 0;
	1451	uniformBufferInfoList[i].range = sizeof(UniformBufferObject);
[621664a]	1452	}
	1453	}
	1454
	1455	void createBuffer(VkDeviceSize size, VkBufferUsageFlags usage, VkMemoryPropertyFlags properties, VkBuffer& buffer, VkDeviceMemory& bufferMemory) {
[80edd70]	1456	VkBufferCreateInfo bufferInfo = {};
	1457	bufferInfo.sType = VK_STRUCTURE_TYPE_BUFFER_CREATE_INFO;
[d9ef6ab]	1458	bufferInfo.size = size;
	1459	bufferInfo.usage = usage;
[80edd70]	1460	bufferInfo.sharingMode = VK_SHARING_MODE_EXCLUSIVE;
	1461
[d9ef6ab]	1462	if (vkCreateBuffer(device, &bufferInfo, nullptr, &buffer) != VK_SUCCESS) {
	1463	throw runtime_error("failed to create buffer!");
[80edd70]	1464	}
	1465
[d9ef6ab]	1466	VkMemoryRequirements memRequirements;
	1467	vkGetBufferMemoryRequirements(device, buffer, &memRequirements);
[80edd70]	1468
	1469	VkMemoryAllocateInfo allocInfo = {};
	1470	allocInfo.sType = VK_STRUCTURE_TYPE_MEMORY_ALLOCATE_INFO;
[d9ef6ab]	1471	allocInfo.allocationSize = memRequirements.size;
	1472	allocInfo.memoryTypeIndex = findMemoryType(memRequirements.memoryTypeBits, properties);
[621664a]	1473
[d9ef6ab]	1474	if (vkAllocateMemory(device, &allocInfo, nullptr, &bufferMemory) != VK_SUCCESS) {
	1475	throw runtime_error("failed to allocate buffer memory!");
[80edd70]	1476	}
	1477
[d9ef6ab]	1478	vkBindBufferMemory(device, buffer, bufferMemory, 0);
	1479	}
[80edd70]	1480
[d9ef6ab]	1481	void copyBuffer(VkBuffer srcBuffer, VkBuffer dstBuffer, VkDeviceSize size) {
[eea05dd]	1482	VkCommandBuffer commandBuffer = beginSingleTimeCommands();
	1483
	1484	VkBufferCopy copyRegion = {};
	1485	copyRegion.size = size;
	1486	vkCmdCopyBuffer(commandBuffer, srcBuffer, dstBuffer, 1, &copyRegion);
	1487
	1488	endSingleTimeCommands(commandBuffer);
	1489	}
	1490
	1491	VkCommandBuffer beginSingleTimeCommands() {
[d9ef6ab]	1492	VkCommandBufferAllocateInfo allocInfo = {};
	1493	allocInfo.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_ALLOCATE_INFO;
	1494	allocInfo.level = VK_COMMAND_BUFFER_LEVEL_PRIMARY;
	1495	allocInfo.commandPool = commandPool;
	1496	allocInfo.commandBufferCount = 1;
	1497
	1498	VkCommandBuffer commandBuffer;
	1499	vkAllocateCommandBuffers(device, &allocInfo, &commandBuffer);
	1500
	1501	VkCommandBufferBeginInfo beginInfo = {};
	1502	beginInfo.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_BEGIN_INFO;
	1503	beginInfo.flags = VK_COMMAND_BUFFER_USAGE_ONE_TIME_SUBMIT_BIT;
	1504
	1505	vkBeginCommandBuffer(commandBuffer, &beginInfo);
	1506
[eea05dd]	1507	return commandBuffer;
	1508	}
[d9ef6ab]	1509
[eea05dd]	1510	void endSingleTimeCommands(VkCommandBuffer commandBuffer) {
[d9ef6ab]	1511	vkEndCommandBuffer(commandBuffer);
	1512
	1513	VkSubmitInfo submitInfo = {};
	1514	submitInfo.sType = VK_STRUCTURE_TYPE_SUBMIT_INFO;
	1515	submitInfo.commandBufferCount = 1;
	1516	submitInfo.pCommandBuffers = &commandBuffer;
	1517
	1518	vkQueueSubmit(graphicsQueue, 1, &submitInfo, VK_NULL_HANDLE);
	1519	vkQueueWaitIdle(graphicsQueue);
	1520
	1521	vkFreeCommandBuffers(device, commandPool, 1, &commandBuffer);
[80edd70]	1522	}
	1523
	1524	uint32_t findMemoryType(uint32_t typeFilter, VkMemoryPropertyFlags properties) {
	1525	VkPhysicalDeviceMemoryProperties memProperties;
	1526	vkGetPhysicalDeviceMemoryProperties(physicalDevice, &memProperties);
	1527
	1528	for (uint32_t i = 0; i < memProperties.memoryTypeCount; i++) {
	1529	if ((typeFilter & (1 << i)) && (memProperties.memoryTypes[i].propertyFlags & properties) == properties) {
	1530	return i;
	1531	}
	1532	}
	1533
	1534	throw runtime_error("failed to find suitable memory type!");
	1535	}
	1536
[721e8be]	1537	void createDescriptorPool(GraphicsPipelineInfo& info) {
	1538	vector<VkDescriptorPoolSize> poolSizes(info.descriptorInfoList.size());
[c7fb883]	1539
[721e8be]	1540	for (size_t i = 0; i < poolSizes.size(); i++) {
	1541	poolSizes[i].type = info.descriptorInfoList[i].type;
	1542	poolSizes[i].descriptorCount = static_cast<uint32_t>(swapChainImages.size());
[c7fb883]	1543	}
[e5d4aca]	1544
	1545	VkDescriptorPoolCreateInfo poolInfo = {};
	1546	poolInfo.sType = VK_STRUCTURE_TYPE_DESCRIPTOR_POOL_CREATE_INFO;
	1547	poolInfo.poolSizeCount = static_cast<uint32_t>(poolSizes.size());
	1548	poolInfo.pPoolSizes = poolSizes.data();
	1549	poolInfo.maxSets = static_cast<uint32_t>(swapChainImages.size());
	1550
	1551	if (vkCreateDescriptorPool(device, &poolInfo, nullptr, &info.descriptorPool) != VK_SUCCESS) {
	1552	throw runtime_error("failed to create descriptor pool!");
	1553	}
	1554	}
	1555
[721e8be]	1556	void createDescriptorSets(GraphicsPipelineInfo& info) {
[e5d4aca]	1557	vector<VkDescriptorSetLayout> layouts(swapChainImages.size(), info.descriptorSetLayout);
	1558
	1559	VkDescriptorSetAllocateInfo allocInfo = {};
	1560	allocInfo.sType = VK_STRUCTURE_TYPE_DESCRIPTOR_SET_ALLOCATE_INFO;
	1561	allocInfo.descriptorPool = info.descriptorPool;
	1562	allocInfo.descriptorSetCount = static_cast<uint32_t>(swapChainImages.size());
	1563	allocInfo.pSetLayouts = layouts.data();
	1564
	1565	info.descriptorSets.resize(swapChainImages.size());
	1566	if (vkAllocateDescriptorSets(device, &allocInfo, info.descriptorSets.data()) != VK_SUCCESS) {
	1567	throw runtime_error("failed to allocate descriptor sets!");
	1568	}
	1569
	1570	for (size_t i = 0; i < swapChainImages.size(); i++) {
[721e8be]	1571	vector<VkWriteDescriptorSet> descriptorWrites(info.descriptorInfoList.size());
	1572
	1573	for (size_t j = 0; j < descriptorWrites.size(); j++) {
	1574	descriptorWrites[j].sType = VK_STRUCTURE_TYPE_WRITE_DESCRIPTOR_SET;
	1575	descriptorWrites[j].dstSet = info.descriptorSets[i];
	1576	descriptorWrites[j].dstBinding = j;
	1577	descriptorWrites[j].dstArrayElement = 0;
	1578	descriptorWrites[j].descriptorType = info.descriptorInfoList[j].type;
	1579	descriptorWrites[j].descriptorCount = 1;
	1580	descriptorWrites[j].pBufferInfo = nullptr;
	1581	descriptorWrites[j].pImageInfo = nullptr;
	1582	descriptorWrites[j].pTexelBufferView = nullptr;
	1583
	1584	switch (descriptorWrites[j].descriptorType) {
	1585	case VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER:
	1586	descriptorWrites[j].pBufferInfo = &(*info.descriptorInfoList[j].bufferDataList)[i];
	1587	break;
	1588	case VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER:
	1589	descriptorWrites[j].pImageInfo = info.descriptorInfoList[j].imageData;
	1590	break;
	1591	default:
	1592	cout << "Unknown descriptor type: " << descriptorWrites[j].descriptorType << endl;
	1593	}
	1594	}
[e5d4aca]	1595
	1596	vkUpdateDescriptorSets(device, static_cast<uint32_t>(descriptorWrites.size()), descriptorWrites.data(), 0, nullptr);
	1597	}
	1598	}
	1599
[47bff4c]	1600	void createCommandBuffers() {
	1601	commandBuffers.resize(swapChainFramebuffers.size());
	1602
	1603	VkCommandBufferAllocateInfo allocInfo = {};
	1604	allocInfo.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_ALLOCATE_INFO;
	1605	allocInfo.commandPool = commandPool;
	1606	allocInfo.level = VK_COMMAND_BUFFER_LEVEL_PRIMARY;
[621664a]	1607	allocInfo.commandBufferCount = (uint32_t) commandBuffers.size();
[47bff4c]	1608
	1609	if (vkAllocateCommandBuffers(device, &allocInfo, commandBuffers.data()) != VK_SUCCESS) {
[621664a]	1610	throw runtime_error("failed to allocate command buffers!");
[47bff4c]	1611	}
	1612
	1613	for (size_t i = 0; i < commandBuffers.size(); i++) {
	1614	VkCommandBufferBeginInfo beginInfo = {};
	1615	beginInfo.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_BEGIN_INFO;
	1616	beginInfo.flags = VK_COMMAND_BUFFER_USAGE_SIMULTANEOUS_USE_BIT;
	1617	beginInfo.pInheritanceInfo = nullptr;
	1618
	1619	if (vkBeginCommandBuffer(commandBuffers[i], &beginInfo) != VK_SUCCESS) {
	1620	throw runtime_error("failed to begin recording command buffer!");
	1621	}
	1622
	1623	VkRenderPassBeginInfo renderPassInfo = {};
	1624	renderPassInfo.sType = VK_STRUCTURE_TYPE_RENDER_PASS_BEGIN_INFO;
	1625	renderPassInfo.renderPass = renderPass;
	1626	renderPassInfo.framebuffer = swapChainFramebuffers[i];
	1627	renderPassInfo.renderArea.offset = { 0, 0 };
	1628	renderPassInfo.renderArea.extent = swapChainExtent;
	1629
[adcd252]	1630	array<VkClearValue, 2> clearValues = {};
[f00ee54]	1631	clearValues[0].color = {{ 0.0f, 0.0f, 0.0f, 1.0f }};
[adcd252]	1632	clearValues[1].depthStencil = { 1.0f, 0 };
	1633
	1634	renderPassInfo.clearValueCount = static_cast<uint32_t>(clearValues.size());
	1635	renderPassInfo.pClearValues = clearValues.data();
[47bff4c]	1636
	1637	vkCmdBeginRenderPass(commandBuffers[i], &renderPassInfo, VK_SUBPASS_CONTENTS_INLINE);
[621664a]	1638
[d22ae72]	1639	createGraphicsPipelineCommands(scenePipeline, i);
	1640	createGraphicsPipelineCommands(overlayPipeline, i);
[621664a]	1641
[47bff4c]	1642	vkCmdEndRenderPass(commandBuffers[i]);
	1643
	1644	if (vkEndCommandBuffer(commandBuffers[i]) != VK_SUCCESS) {
	1645	throw runtime_error("failed to record command buffer!");
	1646	}
	1647	}
	1648	}
	1649
[1187ef5]	1650	void createGraphicsPipelineCommands(GraphicsPipelineInfo& info, uint32_t currentImage) {
	1651	vkCmdBindPipeline(commandBuffers[currentImage], VK_PIPELINE_BIND_POINT_GRAPHICS, info.pipeline);
	1652	vkCmdBindDescriptorSets(commandBuffers[currentImage], VK_PIPELINE_BIND_POINT_GRAPHICS, info.pipelineLayout, 0, 1,
	1653	&info.descriptorSets[currentImage], 0, nullptr);
[d22ae72]	1654
	1655	VkBuffer vertexBuffers[] = { info.vertexBuffer };
	1656	VkDeviceSize offsets[] = { 0 };
[1187ef5]	1657	vkCmdBindVertexBuffers(commandBuffers[currentImage], 0, 1, vertexBuffers, offsets);
[d22ae72]	1658
[1187ef5]	1659	vkCmdBindIndexBuffer(commandBuffers[currentImage], info.indexBuffer, 0, VK_INDEX_TYPE_UINT16);
[d22ae72]	1660
[1187ef5]	1661	vkCmdDrawIndexed(commandBuffers[currentImage], static_cast<uint32_t>(info.numIndices), 1, 0, 0, 0);
[d22ae72]	1662	}
	1663
[47bff4c]	1664	void createSyncObjects() {
	1665	imageAvailableSemaphores.resize(MAX_FRAMES_IN_FLIGHT);
	1666	renderFinishedSemaphores.resize(MAX_FRAMES_IN_FLIGHT);
	1667	inFlightFences.resize(MAX_FRAMES_IN_FLIGHT);
	1668
	1669	VkSemaphoreCreateInfo semaphoreInfo = {};
	1670	semaphoreInfo.sType = VK_STRUCTURE_TYPE_SEMAPHORE_CREATE_INFO;
	1671
	1672	VkFenceCreateInfo fenceInfo = {};
	1673	fenceInfo.sType = VK_STRUCTURE_TYPE_FENCE_CREATE_INFO;
	1674	fenceInfo.flags = VK_FENCE_CREATE_SIGNALED_BIT;
	1675
	1676	for (size_t i = 0; i < MAX_FRAMES_IN_FLIGHT; i++) {
	1677	if (vkCreateSemaphore(device, &semaphoreInfo, nullptr, &imageAvailableSemaphores[i]) != VK_SUCCESS \|\|
[1187ef5]	1678	vkCreateSemaphore(device, &semaphoreInfo, nullptr, &renderFinishedSemaphores[i]) != VK_SUCCESS \|\|
	1679	vkCreateFence(device, &fenceInfo, nullptr, &inFlightFences[i]) != VK_SUCCESS) {
[47bff4c]	1680	throw runtime_error("failed to create synchronization objects for a frame!");
	1681	}
	1682	}
	1683	}
	1684
[c1c2021]	1685	/* START OF REFACTORED CODE */
[826df16]	1686	void mainLoop() {
	1687	// TODO: Create some generic event-handling functions in game-gui-*
	1688	SDL_Event e;
	1689	bool quit = false;
	1690
[7dcd925]	1691	while (!quit) {
[826df16]	1692	while (SDL_PollEvent(&e)) {
	1693	if (e.type == SDL_QUIT) {
	1694	quit = true;
	1695	}
	1696	if (e.type == SDL_KEYDOWN) {
[91c89f7]	1697	if (e.key.keysym.scancode == SDL_SCANCODE_ESCAPE) {
	1698	quit = true;
	1699	}
[826df16]	1700	}
	1701	if (e.type == SDL_MOUSEBUTTONDOWN) {
	1702	quit = true;
	1703	}
[75108ef]	1704	if (e.type == SDL_WINDOWEVENT) {
[1187ef5]	1705	if (e.window.event == SDL_WINDOWEVENT_SIZE_CHANGED \|\|
	1706	e.window.event == SDL_WINDOWEVENT_MINIMIZED) {
[75108ef]	1707	framebufferResized = true;
	1708	}
	1709	}
[47bff4c]	1710	}
[321272c]	1711
[5f3dba8]	1712	drawUI();
[e1a7f5a]	1713
	1714	drawFrame();
[47bff4c]	1715	}
	1716
	1717	vkDeviceWaitIdle(device);
	1718	}
	1719
	1720	void drawFrame() {
[f94eea9]	1721	/* END OF REFACTORED CODE */
[47bff4c]	1722	vkWaitForFences(device, 1, &inFlightFences[currentFrame], VK_TRUE, numeric_limits<uint64_t>::max());
	1723
	1724	uint32_t imageIndex;
	1725
[621664a]	1726	VkResult result = vkAcquireNextImageKHR(device, swapChain, numeric_limits<uint64_t>::max(),
	1727	imageAvailableSemaphores[currentFrame], VK_NULL_HANDLE, &imageIndex);
[75108ef]	1728
	1729	if (result == VK_ERROR_OUT_OF_DATE_KHR) {
	1730	recreateSwapChain();
	1731	return;
	1732	} else if (result != VK_SUCCESS && result != VK_SUBOPTIMAL_KHR) {
	1733	throw runtime_error("failed to acquire swap chain image!");
	1734	}
[47bff4c]	1735
[de32fda]	1736	updateUniformBuffer(imageIndex);
	1737
[47bff4c]	1738	VkSubmitInfo submitInfo = {};
	1739	submitInfo.sType = VK_STRUCTURE_TYPE_SUBMIT_INFO;
	1740
	1741	VkSemaphore waitSemaphores[] = { imageAvailableSemaphores[currentFrame] };
	1742	VkPipelineStageFlags waitStages[] = { VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT };
	1743
	1744	submitInfo.waitSemaphoreCount = 1;
	1745	submitInfo.pWaitSemaphores = waitSemaphores;
	1746	submitInfo.pWaitDstStageMask = waitStages;
	1747	submitInfo.commandBufferCount = 1;
	1748	submitInfo.pCommandBuffers = &commandBuffers[imageIndex];
	1749
	1750	VkSemaphore signalSemaphores[] = { renderFinishedSemaphores[currentFrame] };
	1751
	1752	submitInfo.signalSemaphoreCount = 1;
	1753	submitInfo.pSignalSemaphores = signalSemaphores;
	1754
[75108ef]	1755	vkResetFences(device, 1, &inFlightFences[currentFrame]);
	1756
[47bff4c]	1757	if (vkQueueSubmit(graphicsQueue, 1, &submitInfo, inFlightFences[currentFrame]) != VK_SUCCESS) {
	1758	throw runtime_error("failed to submit draw command buffer!");
[bfd620e]	1759	}
[47bff4c]	1760
	1761	VkPresentInfoKHR presentInfo = {};
	1762	presentInfo.sType = VK_STRUCTURE_TYPE_PRESENT_INFO_KHR;
	1763	presentInfo.waitSemaphoreCount = 1;
	1764	presentInfo.pWaitSemaphores = signalSemaphores;
	1765
	1766	VkSwapchainKHR swapChains[] = { swapChain };
	1767	presentInfo.swapchainCount = 1;
	1768	presentInfo.pSwapchains = swapChains;
	1769	presentInfo.pImageIndices = &imageIndex;
	1770	presentInfo.pResults = nullptr;
	1771
[75108ef]	1772	result = vkQueuePresentKHR(presentQueue, &presentInfo);
	1773
	1774	if (result == VK_ERROR_OUT_OF_DATE_KHR \|\| result == VK_SUBOPTIMAL_KHR \|\| framebufferResized) {
	1775	framebufferResized = false;
	1776	recreateSwapChain();
	1777	} else if (result != VK_SUCCESS) {
	1778	throw runtime_error("failed to present swap chain image!");
	1779	}
[47bff4c]	1780
	1781	currentFrame = (currentFrame + 1) % MAX_FRAMES_IN_FLIGHT;
[fba08f2]	1782	currentFrame = (currentFrame + 1) % MAX_FRAMES_IN_FLIGHT;
[f94eea9]	1783	/* START OF REFACTORED CODE */
[826df16]	1784	}
	1785
[5f3dba8]	1786	void drawUI() {
[f94eea9]	1787	/* END OF REFACTORED CODE */
[e1a7f5a]	1788	// TODO: Since I currently don't use any other render targets,
	1789	// I may as well set this once before the render loop
[5f3dba8]	1790	SDL_SetRenderTarget(gRenderer, uiOverlay);
	1791
[5936c58]	1792	SDL_SetRenderDrawColor(gRenderer, 0x00, 0x00, 0x00, 0x00);
[5f3dba8]	1793	SDL_RenderClear(gRenderer);
	1794
	1795	SDL_Rect rect;
	1796
	1797	rect = {280, 220, 100, 100};
[5936c58]	1798	SDL_SetRenderDrawColor(gRenderer, 0x00, 0xFF, 0x00, 0xFF);
[5f3dba8]	1799	SDL_RenderFillRect(gRenderer, &rect);
	1800	SDL_SetRenderDrawColor(gRenderer, 0x00, 0x9F, 0x9F, 0xFF);
	1801
	1802	rect = {10, 10, 0, 0};
	1803	SDL_QueryTexture(uiText, nullptr, nullptr, &(rect.w), &(rect.h));
	1804	SDL_RenderCopy(gRenderer, uiText, nullptr, &rect);
	1805
	1806	rect = {10, 80, 0, 0};
	1807	SDL_QueryTexture(uiImage, nullptr, nullptr, &(rect.w), &(rect.h));
	1808	SDL_RenderCopy(gRenderer, uiImage, nullptr, &rect);
	1809
[5936c58]	1810	SDL_SetRenderDrawColor(gRenderer, 0x00, 0x00, 0xFF, 0xFF);
[5f3dba8]	1811	SDL_RenderDrawLine(gRenderer, 50, 5, 150, 500);
	1812
[e1a7f5a]	1813	populateImageFromSDLTexture(uiOverlay, sdlOverlayImage);
[f94eea9]	1814	/* START OF REFACTORED CODE */
[5f3dba8]	1815	}
[f94eea9]	1816	/* END OF REFACTORED CODE */
[5f3dba8]	1817
[de32fda]	1818	void updateUniformBuffer(uint32_t currentImage) {
	1819	static auto startTime = chrono::high_resolution_clock::now();
	1820
	1821	auto currentTime = chrono::high_resolution_clock::now();
	1822	float time = chrono::duration<float, chrono::seconds::period>(currentTime - startTime).count();
	1823
	1824	UniformBufferObject ubo = {};
[f00ee54]	1825	ubo.model = rotate(glm::mat4(1.0f), time * glm::radians(90.0f), glm::vec3(0.0f, 0.0f, 1.0f));
	1826	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));
	1827	ubo.proj = perspective(radians(45.0f), swapChainExtent.width / (float)swapChainExtent.height, 0.1f, 10.0f);
[4f63fa8]	1828	ubo.proj[1][1] *= -1; // flip the y-axis so that +y is up
[fba08f2]	1829
[de32fda]	1830	void* data;
	1831	vkMapMemory(device, uniformBuffersMemory[currentImage], 0, sizeof(ubo), 0, &data);
	1832	memcpy(data, &ubo, sizeof(ubo));
	1833	vkUnmapMemory(device, uniformBuffersMemory[currentImage]);
	1834	}
	1835
[621664a]	1836	void recreateSwapChain() {
[cabdd5c]	1837	gui->refreshWindowSize();
[621664a]	1838
[cabdd5c]	1839	while (gui->getWindowWidth() == 0 \|\| gui->getWindowHeight() == 0 \|\|
[621664a]	1840	(SDL_GetWindowFlags(window) & SDL_WINDOW_MINIMIZED) != 0) {
	1841	SDL_WaitEvent(nullptr);
[cabdd5c]	1842	gui->refreshWindowSize();
[621664a]	1843	}
	1844
	1845	vkDeviceWaitIdle(device);
	1846
	1847	cleanupSwapChain();
	1848
	1849	createSwapChain();
	1850	createImageViews();
	1851	createRenderPass();
[d22ae72]	1852
[e5d4aca]	1853	createBufferResources();
	1854	}
[d22ae72]	1855
[e5d4aca]	1856	void createBufferResources() {
[adcd252]	1857	createDepthResources();
[621664a]	1858	createFramebuffers();
	1859	createUniformBuffers();
[d22ae72]	1860
[e5d4aca]	1861	createGraphicsPipeline("shaders/scene-vert.spv", "shaders/scene-frag.spv", scenePipeline);
[721e8be]	1862	createDescriptorPool(scenePipeline);
	1863	createDescriptorSets(scenePipeline);
[d22ae72]	1864
[e5d4aca]	1865	createGraphicsPipeline("shaders/overlay-vert.spv", "shaders/overlay-frag.spv", overlayPipeline);
[721e8be]	1866	createDescriptorPool(overlayPipeline);
	1867	createDescriptorSets(overlayPipeline);
[d22ae72]	1868
[621664a]	1869	createCommandBuffers();
	1870	}
	1871
[c1c2021]	1872	/* START OF REFACTORED CODE */
[826df16]	1873	void cleanup() {
[75108ef]	1874	cleanupSwapChain();
[c1c2021]	1875	/* END OF REFACTORED CODE */
[75108ef]	1876
[fba08f2]	1877	vkDestroySampler(device, textureSampler, nullptr);
[69dccfe]	1878
[fba08f2]	1879	vkDestroyImageView(device, textureImageView, nullptr);
[eea05dd]	1880	vkDestroyImage(device, textureImage, nullptr);
[f5d5686]	1881	vkFreeMemory(device, textureImageMemory, nullptr);
[eea05dd]	1882
[69dccfe]	1883	vkDestroyImageView(device, overlayImageView, nullptr);
	1884	vkDestroyImage(device, overlayImage, nullptr);
	1885	vkFreeMemory(device, overlayImageMemory, nullptr);
	1886
[e1a7f5a]	1887	vkDestroyImageView(device, sdlOverlayImageView, nullptr);
	1888	vkDestroyImage(device, sdlOverlayImage, nullptr);
	1889	vkFreeMemory(device, sdlOverlayImageMemory, nullptr);
	1890
[d22ae72]	1891	cleanupPipelineBuffers(scenePipeline);
	1892	cleanupPipelineBuffers(overlayPipeline);
[80edd70]	1893
[47bff4c]	1894	for (size_t i = 0; i < MAX_FRAMES_IN_FLIGHT; i++) {
	1895	vkDestroySemaphore(device, renderFinishedSemaphores[i], nullptr);
[621664a]	1896	vkDestroySemaphore(device, imageAvailableSemaphores[i], nullptr);
[47bff4c]	1897	vkDestroyFence(device, inFlightFences[i], nullptr);
	1898	}
	1899
[c1c2021]	1900	/* START OF REFACTORED CODE */
[fa9fa1c]	1901	vkDestroyCommandPool(device, commandPool, nullptr);
[909b51a]	1902	vkDestroyDevice(device, nullptr);
[cabdd5c]	1903	vkDestroySurfaceKHR(instance, surface, nullptr);
[909b51a]	1904
[80de39d]	1905	if (enableValidationLayers) {
	1906	DestroyDebugUtilsMessengerEXT(instance, debugMessenger, nullptr);
	1907	}
	1908
[826df16]	1909	vkDestroyInstance(instance, nullptr);
[cabdd5c]	1910	/* END OF REFACTORED CODE */
[826df16]	1911
[5f3dba8]	1912	// TODO: Check if any of these functions accept null parameters
	1913	// If they do, I don't need to check for that
	1914
	1915	if (uiOverlay != nullptr) {
	1916	SDL_DestroyTexture(uiOverlay);
	1917	uiOverlay = nullptr;
	1918	}
	1919
	1920	TTF_CloseFont(gFont);
	1921	gFont = nullptr;
	1922
	1923	if (uiText != nullptr) {
	1924	SDL_DestroyTexture(uiText);
	1925	uiText = nullptr;
	1926	}
	1927
	1928	if (uiImage != nullptr) {
	1929	SDL_DestroyTexture(uiImage);
	1930	uiImage = nullptr;
	1931	}
	1932
[cabdd5c]	1933	/* START OF REFACTORED CODE */
[5f3dba8]	1934	SDL_DestroyRenderer(gRenderer);
	1935	gRenderer = nullptr;
	1936
[7fc5e27]	1937	gui->destroyWindow();
	1938	gui->shutdown();
[98f3232]	1939	delete gui;
[826df16]	1940	}
[e09ad38]	1941
[621664a]	1942	void cleanupSwapChain() {
[c1c2021]	1943	/* END OF REFACTORED CODE */
[adcd252]	1944	vkDestroyImageView(device, depthImageView, nullptr);
	1945	vkDestroyImage(device, depthImage, nullptr);
	1946	vkFreeMemory(device, depthImageMemory, nullptr);
	1947
[621664a]	1948	for (auto framebuffer : swapChainFramebuffers) {
	1949	vkDestroyFramebuffer(device, framebuffer, nullptr);
	1950	}
	1951
	1952	vkFreeCommandBuffers(device, commandPool, static_cast<uint32_t>(commandBuffers.size()), commandBuffers.data());
	1953
[d22ae72]	1954	cleanupPipeline(scenePipeline);
	1955	cleanupPipeline(overlayPipeline);
[b8b32bd]	1956
[6fc24c7]	1957	/* START OF REFACTORED CODE */
[621664a]	1958	vkDestroyRenderPass(device, renderPass, nullptr);
	1959
	1960	for (auto imageView : swapChainImageViews) {
	1961	vkDestroyImageView(device, imageView, nullptr);
	1962	}
	1963
	1964	vkDestroySwapchainKHR(device, swapChain, nullptr);
[502bd0b]	1965	/* END OF REFACTORED CODE */
[621664a]	1966
	1967	for (size_t i = 0; i < swapChainImages.size(); i++) {
	1968	vkDestroyBuffer(device, uniformBuffers[i], nullptr);
	1969	vkFreeMemory(device, uniformBuffersMemory[i], nullptr);
	1970	}
[c1c2021]	1971	/* START OF REFACTORED CODE */
[d22ae72]	1972	}
[c1c2021]	1973	/* END OF REFACTORED CODE */
[d22ae72]	1974
	1975	void cleanupPipeline(GraphicsPipelineInfo& pipeline) {
	1976	vkDestroyPipeline(device, pipeline.pipeline, nullptr);
	1977	vkDestroyDescriptorPool(device, pipeline.descriptorPool, nullptr);
	1978	vkDestroyPipelineLayout(device, pipeline.pipelineLayout, nullptr);
	1979	}
	1980
	1981	void cleanupPipelineBuffers(GraphicsPipelineInfo& pipeline) {
	1982	vkDestroyDescriptorSetLayout(device, pipeline.descriptorSetLayout, nullptr);
[621664a]	1983
[d22ae72]	1984	vkDestroyBuffer(device, pipeline.vertexBuffer, nullptr);
	1985	vkFreeMemory(device, pipeline.vertexBufferMemory, nullptr);
	1986	vkDestroyBuffer(device, pipeline.indexBuffer, nullptr);
	1987	vkFreeMemory(device, pipeline.indexBufferMemory, nullptr);
[621664a]	1988	}
	1989
[e09ad38]	1990	static VKAPI_ATTR VkBool32 VKAPI_CALL debugCallback(
[621664a]	1991	VkDebugUtilsMessageSeverityFlagBitsEXT messageSeverity,
	1992	VkDebugUtilsMessageTypeFlagsEXT messageType,
	1993	const VkDebugUtilsMessengerCallbackDataEXT* pCallbackData,
	1994	void* pUserData) {
[e09ad38]	1995	cerr << "validation layer: " << pCallbackData->pMessage << endl;
	1996
	1997	return VK_FALSE;
[0e6ecf3]	1998	}
[e09ad38]	1999
	2000	static vector<char> readFile(const string& filename) {
	2001	ifstream file(filename, ios::ate \| ios::binary);
	2002
	2003	if (!file.is_open()) {
	2004	throw runtime_error("failed to open file!");
	2005	}
	2006
[621664a]	2007	size_t fileSize = (size_t) file.tellg();
[e09ad38]	2008	vector<char> buffer(fileSize);
	2009
	2010	file.seekg(0);
	2011	file.read(buffer.data(), fileSize);
	2012
	2013	file.close();
	2014
	2015	return buffer;
	2016	}
[826df16]	2017	};
	2018
[cabdd5c]	2019	/* START OF REFACTORED CODE */
[1c6cd5e]	2020	int main(int argc, char* argv[]) {
[826df16]	2021
[b6127d2]	2022	#ifdef NDEBUG
	2023	cout << "DEBUGGING IS OFF" << endl;
	2024	#else
	2025	cout << "DEBUGGING IS ON" << endl;
	2026	#endif
[a8f0577]	2027
[826df16]	2028	cout << "Starting Vulkan game..." << endl;
	2029
	2030	VulkanGame game;
	2031
	2032	try {
	2033	game.run();
	2034	} catch (const exception& e) {
	2035	cerr << e.what() << endl;
	2036	return EXIT_FAILURE;
	2037	}
[03f4c64]	2038
[826df16]	2039	cout << "Finished running the game" << endl;
[03f4c64]	2040
[826df16]	2041	return EXIT_SUCCESS;
[03f4c64]	2042	}
[cabdd5c]	2043	/* END OF REFACTORED CODE */

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