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
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1#define STB_IMAGE_IMPLEMENTATION
2#include "stb_image.h" // TODO: Probably switch to SDL_image
3
4//#define _USE_MATH_DEFINES // Will be needed when/if I need to # include <cmath>
5
6#define GLM_FORCE_RADIANS
7#define GLM_FORCE_DEPTH_ZERO_TO_ONE
8
9#include <glm/glm.hpp>
10#include <glm/gtc/matrix_transform.hpp>
11
12#include <iostream>
13#include <fstream>
14#include <algorithm>
15#include <vector>
16#include <array>
17#include <set>
18#include <optional>
19#include <chrono>
20
21#include "consts.hpp"
22#include "utils.hpp"
23
24#include "game-gui-sdl.hpp"
25
26using namespace std;
27using namespace glm;
28
29const int SCREEN_WIDTH = 800;
30const int SCREEN_HEIGHT = 600;
31
32const int MAX_FRAMES_IN_FLIGHT = 2;
33
34/*** START OF REFACTORED CODE ***/
35#ifdef NDEBUG
36 const bool enableValidationLayers = false;
37#else
38 const bool enableValidationLayers = true;
39#endif
40
41const vector<const char*> validationLayers = {
42 "VK_LAYER_KHRONOS_validation"
43};
44
45const vector<const char*> deviceExtensions = {
46 VK_KHR_SWAPCHAIN_EXTENSION_NAME
47};
48
49struct QueueFamilyIndices {
50 optional<uint32_t> graphicsFamily;
51 optional<uint32_t> presentFamily;
52
53 bool isComplete() {
54 return graphicsFamily.has_value() && presentFamily.has_value();
55 }
56};
57
58struct SwapChainSupportDetails {
59 VkSurfaceCapabilitiesKHR capabilities;
60 vector<VkSurfaceFormatKHR> formats;
61 vector<VkPresentModeKHR> presentModes;
62};
63/*** END OF REFACTORED CODE ***/
64
65struct Vertex {
66 glm::vec3 pos;
67 glm::vec3 color;
68 glm::vec2 texCoord;
69};
70
71struct OverlayVertex {
72 glm::vec3 pos;
73 glm::vec2 texCoord;
74};
75
76struct UniformBufferObject {
77 alignas(16) mat4 model;
78 alignas(16) mat4 view;
79 alignas(16) mat4 proj;
80};
81
82struct DescriptorInfo {
83 VkDescriptorType type;
84 VkShaderStageFlags stageFlags;
85
86 vector<VkDescriptorBufferInfo>* bufferDataList;
87 VkDescriptorImageInfo* imageData;
88};
89
90struct GraphicsPipelineInfo {
91 VkPipelineLayout pipelineLayout;
92 VkPipeline pipeline;
93
94 VkVertexInputBindingDescription bindingDescription;
95 vector<VkVertexInputAttributeDescription> attributeDescriptions;
96
97 vector<DescriptorInfo> descriptorInfoList;
98
99 VkDescriptorPool descriptorPool;
100 VkDescriptorSetLayout descriptorSetLayout;
101 vector<VkDescriptorSet> descriptorSets;
102
103 size_t numVertices; // Currently unused
104 VkBuffer vertexBuffer;
105 VkDeviceMemory vertexBufferMemory;
106
107 size_t numIndices;
108 VkBuffer indexBuffer;
109 VkDeviceMemory indexBufferMemory;
110};
111
112/*** START OF REFACTORED CODE ***/
113VkResult CreateDebugUtilsMessengerEXT(VkInstance instance,
114 const VkDebugUtilsMessengerCreateInfoEXT* pCreateInfo,
115 const VkAllocationCallbacks* pAllocator,
116 VkDebugUtilsMessengerEXT* pDebugMessenger) {
117 auto func = (PFN_vkCreateDebugUtilsMessengerEXT) vkGetInstanceProcAddr(instance, "vkCreateDebugUtilsMessengerEXT");
118
119 if (func != nullptr) {
120 return func(instance, pCreateInfo, pAllocator, pDebugMessenger);
121 } else {
122 return VK_ERROR_EXTENSION_NOT_PRESENT;
123 }
124}
125
126void DestroyDebugUtilsMessengerEXT(VkInstance instance,
127 VkDebugUtilsMessengerEXT debugMessenger,
128 const VkAllocationCallbacks* pAllocator) {
129 auto func = (PFN_vkDestroyDebugUtilsMessengerEXT) vkGetInstanceProcAddr(instance, "vkDestroyDebugUtilsMessengerEXT");
130
131 if (func != nullptr) {
132 func(instance, debugMessenger, pAllocator);
133 }
134}
135
136class VulkanGame {
137 public:
138 void run() {
139 if (initWindow() == RTWO_ERROR) {
140 return;
141 }
142 initVulkan();
143 mainLoop();
144 cleanup();
145 }
146
147 private:
148 GameGui* gui = new GameGui_SDL();
149
150 SDL_version sdlVersion;
151 SDL_Window* window = nullptr;
152 SDL_Renderer* gRenderer = nullptr;
153/*** END OF REFACTORED CODE ***/
154 SDL_Texture* uiOverlay = nullptr;
155
156 TTF_Font* gFont = nullptr;
157 SDL_Texture* uiText = nullptr;
158 SDL_Texture* uiImage = nullptr;
159
160/*** START OF REFACTORED CODE ***/
161 VkInstance instance;
162 VkDebugUtilsMessengerEXT debugMessenger;
163 VkSurfaceKHR surface;
164
165 VkPhysicalDevice physicalDevice = VK_NULL_HANDLE;
166/*** END OF REFACTORED CODE ***/
167 VkDevice device;
168
169 VkQueue graphicsQueue;
170 VkQueue presentQueue;
171
172 VkSwapchainKHR swapChain;
173 vector<VkImage> swapChainImages;
174 VkFormat swapChainImageFormat;
175 VkExtent2D swapChainExtent;
176 vector<VkImageView> swapChainImageViews;
177 vector<VkFramebuffer> swapChainFramebuffers;
178
179 VkRenderPass renderPass;
180
181 VkCommandPool commandPool;
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
187
188 VkImage depthImage;
189 VkDeviceMemory depthImageMemory;
190 VkImageView depthImageView;
191
192 VkImage textureImage;
193 VkDeviceMemory textureImageMemory;
194 VkImageView textureImageView;
195
196 VkImage overlayImage;
197 VkDeviceMemory overlayImageMemory;
198 VkImageView overlayImageView;
199
200 VkImage sdlOverlayImage;
201 VkDeviceMemory sdlOverlayImageMemory;
202 VkImageView sdlOverlayImageView;
203
204 VkSampler textureSampler;
205
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
210 vector<VkBuffer> uniformBuffers;
211 vector<VkDeviceMemory> uniformBuffersMemory;
212
213 VkDescriptorImageInfo sceneImageInfo;
214 VkDescriptorImageInfo overlayImageInfo;
215
216 vector<VkDescriptorBufferInfo> uniformBufferInfoList;
217
218 GraphicsPipelineInfo scenePipeline;
219 GraphicsPipelineInfo overlayPipeline;
220
221 vector<VkSemaphore> imageAvailableSemaphores;
222 vector<VkSemaphore> renderFinishedSemaphores;
223 vector<VkFence> inFlightFences;
224
225 size_t currentFrame = 0;
226
227 bool framebufferResized = false;
228
229/*** START OF REFACTORED CODE ***/
230 bool initWindow() {
231 if (gui->init() == RTWO_ERROR) {
232 cout << "UI library could not be initialized!" << endl;
233 cout << SDL_GetError() << endl;
234 return RTWO_ERROR;
235 }
236 cout << "GUI init succeeded" << endl;
237
238 window = (SDL_Window*) gui->createWindow("Vulkan Game", SCREEN_WIDTH, SCREEN_HEIGHT, false);
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 }
249/*** END OF REFACTORED CODE ***/
250
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
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;
298 }
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;
310 }
311
312/*** START OF REFACTORED CODE ***/
313 void initVulkan() {
314 createInstance();
315 setupDebugMessenger();
316 createSurface();
317 pickPhysicalDevice();
318/*** END OF REFACTORED CODE ***/
319 createLogicalDevice();
320 createSwapChain();
321 createImageViews();
322 createRenderPass();
323
324 createCommandPool();
325
326 createImageResources("textures/texture.jpg", textureImage, textureImageMemory, textureImageView);
327 createImageResourcesFromSDLTexture(uiOverlay, sdlOverlayImage, sdlOverlayImageMemory, sdlOverlayImageView);
328 createTextureSampler();
329
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
340 vector<Vertex> sceneVertices = {
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}}
350 };
351 vector<uint16_t> sceneIndices = {
352 0, 1, 2, 2, 3, 0,
353 4, 5, 6, 6, 7, 4
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
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);
368
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
387 addDescriptorInfo(overlayPipeline, VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, VK_SHADER_STAGE_FRAGMENT_BIT, nullptr, &overlayImageInfo);
388
389 createDescriptorSetLayout(overlayPipeline);
390
391 createBufferResources();
392
393 createSyncObjects();
394 }
395
396 void createInstance() {
397 if (enableValidationLayers && !checkValidationLayerSupport()) {
398 throw runtime_error("validation layers requested, but not available!");
399 }
400
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
413 vector<const char*> extensions = getRequiredExtensions();
414 createInfo.enabledExtensionCount = static_cast<uint32_t>(extensions.size());
415 createInfo.ppEnabledExtensionNames = extensions.data();
416
417 cout << endl << "Extensions:" << endl;
418 for (const char* extensionName : extensions) {
419 cout << extensionName << endl;
420 }
421 cout << endl;
422
423 VkDebugUtilsMessengerCreateInfoEXT debugCreateInfo;
424 if (enableValidationLayers) {
425 createInfo.enabledLayerCount = static_cast<uint32_t>(validationLayers.size());
426 createInfo.ppEnabledLayerNames = validationLayers.data();
427
428 populateDebugMessengerCreateInfo(debugCreateInfo);
429 createInfo.pNext = &debugCreateInfo;
430 } else {
431 createInfo.enabledLayerCount = 0;
432
433 createInfo.pNext = nullptr;
434 }
435
436 if (vkCreateInstance(&createInfo, nullptr, &instance) != VK_SUCCESS) {
437 throw runtime_error("failed to create instance!");
438 }
439 }
440
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
466/*** START OF REFACTORED CODE ***/
467 vector<const char*> getRequiredExtensions() {
468 vector<const char*> extensions = gui->getRequiredExtensions();
469
470 if (enableValidationLayers) {
471 extensions.push_back(VK_EXT_DEBUG_UTILS_EXTENSION_NAME);
472 }
473
474 return extensions;
475 }
476
477 void setupDebugMessenger() {
478 if (!enableValidationLayers) return;
479
480 VkDebugUtilsMessengerCreateInfoEXT createInfo;
481 populateDebugMessengerCreateInfo(createInfo);
482
483 if (CreateDebugUtilsMessengerEXT(instance, &createInfo, nullptr, &debugMessenger) != VK_SUCCESS) {
484 throw runtime_error("failed to set up debug messenger!");
485 }
486 }
487
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
496 void createSurface() {
497 if (gui->createVulkanSurface(instance, &surface) == RTWO_ERROR) {
498 throw runtime_error("failed to create window surface!");
499 }
500 }
501
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);
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
542 VkPhysicalDeviceFeatures supportedFeatures;
543 vkGetPhysicalDeviceFeatures(device, &supportedFeatures);
544
545 return indices.isComplete() && extensionsSupported && swapChainAdequate && supportedFeatures.samplerAnisotropy;
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();
562 }
563/*** END OF REFACTORED CODE ***/
564
565 void createLogicalDevice() {
566 QueueFamilyIndices indices = findQueueFamilies(physicalDevice);
567
568 vector<VkDeviceQueueCreateInfo> queueCreateInfos;
569 set<uint32_t> uniqueQueueFamilies = {indices.graphicsFamily.value(), indices.presentFamily.value()};
570
571 float queuePriority = 1.0f;
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 }
581
582 VkPhysicalDeviceFeatures deviceFeatures = {};
583 deviceFeatures.samplerAnisotropy = VK_TRUE;
584
585 VkDeviceCreateInfo createInfo = {};
586 createInfo.sType = VK_STRUCTURE_TYPE_DEVICE_CREATE_INFO;
587 createInfo.queueCreateInfoCount = static_cast<uint32_t>(queueCreateInfos.size());
588 createInfo.pQueueCreateInfos = queueCreateInfos.data();
589
590 createInfo.pEnabledFeatures = &deviceFeatures;
591
592 createInfo.enabledExtensionCount = static_cast<uint32_t>(deviceExtensions.size());
593 createInfo.ppEnabledExtensionNames = deviceExtensions.data();
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);
609 vkGetDeviceQueue(device, indices.presentFamily.value(), 0, &presentQueue);
610 }
611
612 void createSwapChain() {
613 SwapChainSupportDetails swapChainSupport = querySwapChainSupport(physicalDevice);
614
615 VkSurfaceFormatKHR surfaceFormat = chooseSwapSurfaceFormat(swapChainSupport.formats);
616 VkPresentModeKHR presentMode = chooseSwapPresentMode(swapChainSupport.presentModes);
617 VkExtent2D extent = chooseSwapExtent(swapChainSupport.capabilities);
618
619 uint32_t imageCount = swapChainSupport.capabilities.minImageCount + 1;
620 if (swapChainSupport.capabilities.maxImageCount > 0 && imageCount > swapChainSupport.capabilities.maxImageCount) {
621 imageCount = swapChainSupport.capabilities.maxImageCount;
622 }
623
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;
633
634 QueueFamilyIndices indices = findQueueFamilies(physicalDevice);
635 uint32_t queueFamilyIndices[] = {indices.graphicsFamily.value(), indices.presentFamily.value()};
636
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 }
646
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;
652
653 if (vkCreateSwapchainKHR(device, &createInfo, nullptr, &swapChain) != VK_SUCCESS) {
654 throw runtime_error("failed to create swap chain!");
655 }
656
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;
663 }
664
665/*** START OF REFACTORED CODE ***/
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 }
689/*** END OF REFACTORED CODE ***/
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;
707 }
708 else if (availablePresentMode == VK_PRESENT_MODE_IMMEDIATE_KHR) {
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;
719 } else {
720 VkExtent2D actualExtent = {
721 static_cast<uint32_t>(gui->getWindowWidth()),
722 static_cast<uint32_t>(gui->getWindowHeight())
723 };
724
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));
727
728 return actualExtent;
729 }
730 }
731
732 void createImageViews() {
733 swapChainImageViews.resize(swapChainImages.size());
734
735 for (size_t i = 0; i < swapChainImages.size(); i++) {
736 swapChainImageViews[i] = createImageView(swapChainImages[i], swapChainImageFormat, VK_IMAGE_ASPECT_COLOR_BIT);
737 }
738 }
739
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
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
769 VkSubpassDescription subpass = {};
770 subpass.pipelineBindPoint = VK_PIPELINE_BIND_POINT_GRAPHICS;
771 subpass.colorAttachmentCount = 1;
772 subpass.pColorAttachments = &colorAttachmentRef;
773 subpass.pDepthStencilAttachment = &depthAttachmentRef;
774
775 VkSubpassDependency dependency = {};
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
783 array<VkAttachmentDescription, 2> attachments = { colorAttachment, depthAttachment };
784 VkRenderPassCreateInfo renderPassInfo = {};
785 renderPassInfo.sType = VK_STRUCTURE_TYPE_RENDER_PASS_CREATE_INFO;
786 renderPassInfo.attachmentCount = static_cast<uint32_t>(attachments.size());
787 renderPassInfo.pAttachments = attachments.data();
788 renderPassInfo.subpassCount = 1;
789 renderPassInfo.pSubpasses = &subpass;
790 renderPassInfo.dependencyCount = 1;
791 renderPassInfo.pDependencies = &dependency;
792
793 if (vkCreateRenderPass(device, &renderPassInfo, nullptr, &renderPass) != VK_SUCCESS) {
794 throw runtime_error("failed to create render pass!");
795 }
796 }
797
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
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
852 void createGraphicsPipeline(string vertShaderFile, string fragShaderFile, GraphicsPipelineInfo& info) {
853 auto vertShaderCode = readFile(vertShaderFile);
854 auto fragShaderCode = readFile(fragShaderFile);
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
873 VkPipelineVertexInputStateCreateInfo vertexInputInfo = {};
874 vertexInputInfo.sType = VK_STRUCTURE_TYPE_PIPELINE_VERTEX_INPUT_STATE_CREATE_INFO;
875
876 vertexInputInfo.vertexBindingDescriptionCount = 1;
877 vertexInputInfo.vertexAttributeDescriptionCount = static_cast<uint32_t>(info.attributeDescriptions.size());
878 vertexInputInfo.pVertexBindingDescriptions = &info.bindingDescription;
879 vertexInputInfo.pVertexAttributeDescriptions = info.attributeDescriptions.data();
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;
912 rasterizer.frontFace = VK_FRONT_FACE_COUNTER_CLOCKWISE;
913 rasterizer.depthBiasEnable = VK_FALSE;
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;
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;
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
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
953 VkPipelineLayoutCreateInfo pipelineLayoutInfo = {};
954 pipelineLayoutInfo.sType = VK_STRUCTURE_TYPE_PIPELINE_LAYOUT_CREATE_INFO;
955 pipelineLayoutInfo.setLayoutCount = 1;
956 pipelineLayoutInfo.pSetLayouts = &info.descriptorSetLayout;
957 pipelineLayoutInfo.pushConstantRangeCount = 0;
958
959 if (vkCreatePipelineLayout(device, &pipelineLayoutInfo, nullptr, &info.pipelineLayout) != VK_SUCCESS) {
960 throw runtime_error("failed to create pipeline layout!");
961 }
962
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;
972 pipelineInfo.pDepthStencilState = &depthStencil;
973 pipelineInfo.pColorBlendState = &colorBlending;
974 pipelineInfo.pDynamicState = nullptr;
975 pipelineInfo.layout = info.pipelineLayout;
976 pipelineInfo.renderPass = renderPass;
977 pipelineInfo.subpass = 0;
978 pipelineInfo.basePipelineHandle = VK_NULL_HANDLE;
979 pipelineInfo.basePipelineIndex = -1;
980
981 if (vkCreateGraphicsPipelines(device, VK_NULL_HANDLE, 1, &pipelineInfo, nullptr, &info.pipeline) != VK_SUCCESS) {
982 throw runtime_error("failed to create graphics pipeline!");
983 }
984
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;
1001 }
1002
1003 void createFramebuffers() {
1004 swapChainFramebuffers.resize(swapChainImageViews.size());
1005
1006 for (size_t i = 0; i < swapChainImageViews.size(); i++) {
1007 array <VkImageView, 2> attachments = {
1008 swapChainImageViews[i],
1009 depthImageView
1010 };
1011
1012 VkFramebufferCreateInfo framebufferInfo = {};
1013 framebufferInfo.sType = VK_STRUCTURE_TYPE_FRAMEBUFFER_CREATE_INFO;
1014 framebufferInfo.renderPass = renderPass;
1015 framebufferInfo.attachmentCount = static_cast<uint32_t>(attachments.size());
1016 framebufferInfo.pAttachments = attachments.data();
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
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) {
1036 throw runtime_error("failed to create graphics command pool!");
1037 }
1038 }
1039
1040/*** START OF REFACTORED CODE ***/
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 }
1072/*** END OF REFACTORED CODE ***/
1073
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
1114 void createImageResources(string filename, VkImage& image, VkDeviceMemory& imageMemory, VkImageView& view) {
1115 int texWidth, texHeight, texChannels;
1116
1117 stbi_uc* pixels = stbi_load(filename.c_str(), &texWidth, &texHeight, &texChannels, STBI_rgb_alpha);
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,
1141 VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT, image, imageMemory);
1142
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);
1146
1147 vkDestroyBuffer(device, stagingBuffer, nullptr);
1148 vkFreeMemory(device, stagingBufferMemory, nullptr);
1149
1150 view = createImageView(image, VK_FORMAT_R8G8B8A8_UNORM, VK_IMAGE_ASPECT_COLOR_BIT);
1151 }
1152
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) {
1167 int a, w, h;
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
1199 delete[] pixels;
1200
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
1209 void createImage(uint32_t width, uint32_t height, VkFormat format, VkImageTiling tiling, VkImageUsageFlags usage,
1210 VkMemoryPropertyFlags properties, VkImage& image, VkDeviceMemory& imageMemory) {
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
1233 VkMemoryAllocateInfo allocInfo = {};
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
1245 void transitionImageLayout(VkImage image, VkFormat format, VkImageLayout oldLayout, VkImageLayout newLayout) {
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;
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
1266 barrier.subresourceRange.baseMipLevel = 0;
1267 barrier.subresourceRange.levelCount = 1;
1268 barrier.subresourceRange.baseArrayLayer = 0;
1269 barrier.subresourceRange.layerCount = 1;
1270
1271 VkPipelineStageFlags sourceStage;
1272 VkPipelineStageFlags destinationStage;
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;
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;
1292 } else {
1293 throw invalid_argument("unsupported layout transition!");
1294 }
1295
1296 vkCmdPipelineBarrier(
1297 commandBuffer,
1298 sourceStage, destinationStage,
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
1334 VkImageView createImageView(VkImage image, VkFormat format, VkImageAspectFlags aspectFlags) {
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
1346 viewInfo.subresourceRange.aspectMask = aspectFlags;
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
1386 void createVertexBuffer(GraphicsPipelineInfo& info, const void* vertexData, VkDeviceSize bufferSize) {
1387 VkBuffer stagingBuffer;
1388 VkDeviceMemory stagingBufferMemory;
1389 createBuffer(bufferSize, VK_BUFFER_USAGE_TRANSFER_SRC_BIT,
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);
1395 memcpy(data, vertexData, (size_t) bufferSize);
1396 vkUnmapMemory(device, stagingBufferMemory);
1397
1398 createBuffer(bufferSize, VK_BUFFER_USAGE_TRANSFER_DST_BIT | VK_BUFFER_USAGE_VERTEX_BUFFER_BIT,
1399 VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT, info.vertexBuffer, info.vertexBufferMemory);
1400
1401 copyBuffer(stagingBuffer, info.vertexBuffer, bufferSize);
1402
1403 vkDestroyBuffer(device, stagingBuffer, nullptr);
1404 vkFreeMemory(device, stagingBufferMemory, nullptr);
1405 }
1406
1407 void createIndexBuffer(GraphicsPipelineInfo& info, const void* indexData, VkDeviceSize bufferSize) {
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);
1416 memcpy(data, indexData, (size_t) bufferSize);
1417 vkUnmapMemory(device, stagingBufferMemory);
1418
1419 createBuffer(bufferSize, VK_BUFFER_USAGE_TRANSFER_DST_BIT | VK_BUFFER_USAGE_INDEX_BUFFER_BIT,
1420 VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT, info.indexBuffer, info.indexBufferMemory);
1421
1422 copyBuffer(stagingBuffer, info.indexBuffer, bufferSize);
1423
1424 vkDestroyBuffer(device, stagingBuffer, nullptr);
1425 vkFreeMemory(device, stagingBufferMemory, nullptr);
1426 }
1427
1428 void createUniformBuffers() {
1429 VkDeviceSize bufferSize = sizeof(UniformBufferObject);
1430
1431 uniformBuffers.resize(swapChainImages.size());
1432 uniformBuffersMemory.resize(swapChainImages.size());
1433 uniformBufferInfoList.resize(swapChainImages.size());
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]);
1439
1440 uniformBufferInfoList[i].buffer = uniformBuffers[i];
1441 uniformBufferInfoList[i].offset = 0;
1442 uniformBufferInfoList[i].range = sizeof(UniformBufferObject);
1443 }
1444 }
1445
1446 void createBuffer(VkDeviceSize size, VkBufferUsageFlags usage, VkMemoryPropertyFlags properties, VkBuffer& buffer, VkDeviceMemory& bufferMemory) {
1447 VkBufferCreateInfo bufferInfo = {};
1448 bufferInfo.sType = VK_STRUCTURE_TYPE_BUFFER_CREATE_INFO;
1449 bufferInfo.size = size;
1450 bufferInfo.usage = usage;
1451 bufferInfo.sharingMode = VK_SHARING_MODE_EXCLUSIVE;
1452
1453 if (vkCreateBuffer(device, &bufferInfo, nullptr, &buffer) != VK_SUCCESS) {
1454 throw runtime_error("failed to create buffer!");
1455 }
1456
1457 VkMemoryRequirements memRequirements;
1458 vkGetBufferMemoryRequirements(device, buffer, &memRequirements);
1459
1460 VkMemoryAllocateInfo allocInfo = {};
1461 allocInfo.sType = VK_STRUCTURE_TYPE_MEMORY_ALLOCATE_INFO;
1462 allocInfo.allocationSize = memRequirements.size;
1463 allocInfo.memoryTypeIndex = findMemoryType(memRequirements.memoryTypeBits, properties);
1464
1465 if (vkAllocateMemory(device, &allocInfo, nullptr, &bufferMemory) != VK_SUCCESS) {
1466 throw runtime_error("failed to allocate buffer memory!");
1467 }
1468
1469 vkBindBufferMemory(device, buffer, bufferMemory, 0);
1470 }
1471
1472 void copyBuffer(VkBuffer srcBuffer, VkBuffer dstBuffer, VkDeviceSize size) {
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() {
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
1498 return commandBuffer;
1499 }
1500
1501 void endSingleTimeCommands(VkCommandBuffer commandBuffer) {
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);
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
1528 void createDescriptorPool(GraphicsPipelineInfo& info) {
1529 vector<VkDescriptorPoolSize> poolSizes(info.descriptorInfoList.size());
1530
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());
1534 }
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
1547 void createDescriptorSets(GraphicsPipelineInfo& info) {
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++) {
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 }
1586
1587 vkUpdateDescriptorSets(device, static_cast<uint32_t>(descriptorWrites.size()), descriptorWrites.data(), 0, nullptr);
1588 }
1589 }
1590
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;
1598 allocInfo.commandBufferCount = (uint32_t) commandBuffers.size();
1599
1600 if (vkAllocateCommandBuffers(device, &allocInfo, commandBuffers.data()) != VK_SUCCESS) {
1601 throw runtime_error("failed to allocate command buffers!");
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
1621 array<VkClearValue, 2> clearValues = {};
1622 clearValues[0].color = {{ 0.0f, 0.0f, 0.0f, 1.0f }};
1623 clearValues[1].depthStencil = { 1.0f, 0 };
1624
1625 renderPassInfo.clearValueCount = static_cast<uint32_t>(clearValues.size());
1626 renderPassInfo.pClearValues = clearValues.data();
1627
1628 vkCmdBeginRenderPass(commandBuffers[i], &renderPassInfo, VK_SUBPASS_CONTENTS_INLINE);
1629
1630 createGraphicsPipelineCommands(scenePipeline, i);
1631 createGraphicsPipelineCommands(overlayPipeline, i);
1632
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
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);
1645
1646 VkBuffer vertexBuffers[] = { info.vertexBuffer };
1647 VkDeviceSize offsets[] = { 0 };
1648 vkCmdBindVertexBuffers(commandBuffers[currentImage], 0, 1, vertexBuffers, offsets);
1649
1650 vkCmdBindIndexBuffer(commandBuffers[currentImage], info.indexBuffer, 0, VK_INDEX_TYPE_UINT16);
1651
1652 vkCmdDrawIndexed(commandBuffers[currentImage], static_cast<uint32_t>(info.numIndices), 1, 0, 0, 0);
1653 }
1654
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 ||
1669 vkCreateSemaphore(device, &semaphoreInfo, nullptr, &renderFinishedSemaphores[i]) != VK_SUCCESS ||
1670 vkCreateFence(device, &fenceInfo, nullptr, &inFlightFences[i]) != VK_SUCCESS) {
1671 throw runtime_error("failed to create synchronization objects for a frame!");
1672 }
1673 }
1674 }
1675
1676 void mainLoop() {
1677 // TODO: Create some generic event-handling functions in game-gui-*
1678 SDL_Event e;
1679 bool quit = false;
1680
1681 while (!quit) {
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 }
1692 if (e.type == SDL_WINDOWEVENT) {
1693 if (e.window.event == SDL_WINDOWEVENT_SIZE_CHANGED ||
1694 e.window.event == SDL_WINDOWEVENT_MINIMIZED) {
1695 framebufferResized = true;
1696 }
1697 }
1698 }
1699
1700 drawUI();
1701
1702 drawFrame();
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
1713 VkResult result = vkAcquireNextImageKHR(device, swapChain, numeric_limits<uint64_t>::max(),
1714 imageAvailableSemaphores[currentFrame], VK_NULL_HANDLE, &imageIndex);
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 }
1722
1723 updateUniformBuffer(imageIndex);
1724
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
1742 vkResetFences(device, 1, &inFlightFences[currentFrame]);
1743
1744 if (vkQueueSubmit(graphicsQueue, 1, &submitInfo, inFlightFences[currentFrame]) != VK_SUCCESS) {
1745 throw runtime_error("failed to submit draw command buffer!");
1746 }
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
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 }
1767
1768 currentFrame = (currentFrame + 1) % MAX_FRAMES_IN_FLIGHT;
1769 currentFrame = (currentFrame + 1) % MAX_FRAMES_IN_FLIGHT;
1770 }
1771
1772 void drawUI() {
1773 // TODO: Since I currently don't use any other render targets,
1774 // I may as well set this once before the render loop
1775 SDL_SetRenderTarget(gRenderer, uiOverlay);
1776
1777 SDL_SetRenderDrawColor(gRenderer, 0x00, 0x00, 0x00, 0x00);
1778 SDL_RenderClear(gRenderer);
1779
1780 SDL_Rect rect;
1781
1782 rect = {280, 220, 100, 100};
1783 SDL_SetRenderDrawColor(gRenderer, 0x00, 0xFF, 0x00, 0xFF);
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
1795 SDL_SetRenderDrawColor(gRenderer, 0x00, 0x00, 0xFF, 0xFF);
1796 SDL_RenderDrawLine(gRenderer, 50, 5, 150, 500);
1797
1798 populateImageFromSDLTexture(uiOverlay, sdlOverlayImage);
1799 }
1800
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 = {};
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);
1811 ubo.proj[1][1] *= -1; // flip the y-axis so that +y is up
1812
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
1819 void recreateSwapChain() {
1820 gui->refreshWindowSize();
1821
1822 while (gui->getWindowWidth() == 0 || gui->getWindowHeight() == 0 ||
1823 (SDL_GetWindowFlags(window) & SDL_WINDOW_MINIMIZED) != 0) {
1824 SDL_WaitEvent(nullptr);
1825 gui->refreshWindowSize();
1826 }
1827
1828 vkDeviceWaitIdle(device);
1829
1830 cleanupSwapChain();
1831
1832 createSwapChain();
1833 createImageViews();
1834 createRenderPass();
1835
1836 createBufferResources();
1837 }
1838
1839 void createBufferResources() {
1840 createDepthResources();
1841 createFramebuffers();
1842 createUniformBuffers();
1843
1844 createGraphicsPipeline("shaders/scene-vert.spv", "shaders/scene-frag.spv", scenePipeline);
1845 createDescriptorPool(scenePipeline);
1846 createDescriptorSets(scenePipeline);
1847
1848 createGraphicsPipeline("shaders/overlay-vert.spv", "shaders/overlay-frag.spv", overlayPipeline);
1849 createDescriptorPool(overlayPipeline);
1850 createDescriptorSets(overlayPipeline);
1851
1852 createCommandBuffers();
1853 }
1854
1855 void cleanup() {
1856 cleanupSwapChain();
1857
1858 vkDestroySampler(device, textureSampler, nullptr);
1859
1860 vkDestroyImageView(device, textureImageView, nullptr);
1861 vkDestroyImage(device, textureImage, nullptr);
1862 vkFreeMemory(device, textureImageMemory, nullptr);
1863
1864 vkDestroyImageView(device, overlayImageView, nullptr);
1865 vkDestroyImage(device, overlayImage, nullptr);
1866 vkFreeMemory(device, overlayImageMemory, nullptr);
1867
1868 vkDestroyImageView(device, sdlOverlayImageView, nullptr);
1869 vkDestroyImage(device, sdlOverlayImage, nullptr);
1870 vkFreeMemory(device, sdlOverlayImageMemory, nullptr);
1871
1872 cleanupPipelineBuffers(scenePipeline);
1873 cleanupPipelineBuffers(overlayPipeline);
1874
1875 for (size_t i = 0; i < MAX_FRAMES_IN_FLIGHT; i++) {
1876 vkDestroySemaphore(device, renderFinishedSemaphores[i], nullptr);
1877 vkDestroySemaphore(device, imageAvailableSemaphores[i], nullptr);
1878 vkDestroyFence(device, inFlightFences[i], nullptr);
1879 }
1880
1881 vkDestroyCommandPool(device, commandPool, nullptr);
1882 vkDestroyDevice(device, nullptr);
1883 vkDestroySurfaceKHR(instance, surface, nullptr);
1884
1885/*** START OF REFACTORED CODE ***/
1886 if (enableValidationLayers) {
1887 DestroyDebugUtilsMessengerEXT(instance, debugMessenger, nullptr);
1888 }
1889
1890 vkDestroyInstance(instance, nullptr);
1891/*** END OF REFACTORED CODE ***/
1892
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
1914/*** START OF REFACTORED CODE ***/
1915 SDL_DestroyRenderer(gRenderer);
1916 gRenderer = nullptr;
1917
1918 gui->destroyWindow();
1919 gui->shutdown();
1920 delete gui;
1921/*** END OF REFACTORED CODE ***/
1922 }
1923
1924 void cleanupSwapChain() {
1925 vkDestroyImageView(device, depthImageView, nullptr);
1926 vkDestroyImage(device, depthImage, nullptr);
1927 vkFreeMemory(device, depthImageMemory, nullptr);
1928
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
1935 cleanupPipeline(scenePipeline);
1936 cleanupPipeline(overlayPipeline);
1937
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 }
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);
1960
1961 vkDestroyBuffer(device, pipeline.vertexBuffer, nullptr);
1962 vkFreeMemory(device, pipeline.vertexBufferMemory, nullptr);
1963 vkDestroyBuffer(device, pipeline.indexBuffer, nullptr);
1964 vkFreeMemory(device, pipeline.indexBufferMemory, nullptr);
1965 }
1966
1967 static VKAPI_ATTR VkBool32 VKAPI_CALL debugCallback(
1968 VkDebugUtilsMessageSeverityFlagBitsEXT messageSeverity,
1969 VkDebugUtilsMessageTypeFlagsEXT messageType,
1970 const VkDebugUtilsMessengerCallbackDataEXT* pCallbackData,
1971 void* pUserData) {
1972 cerr << "validation layer: " << pCallbackData->pMessage << endl;
1973
1974 return VK_FALSE;
1975 }
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
1984 size_t fileSize = (size_t) file.tellg();
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 }
1994};
1995
1996/*** START OF REFACTORED CODE ***/
1997int main(int argc, char* argv[]) {
1998
1999#ifdef NDEBUG
2000 cout << "DEBUGGING IS OFF" << endl;
2001#else
2002 cout << "DEBUGGING IS ON" << endl;
2003#endif
2004
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 }
2015
2016 cout << "Finished running the game" << endl;
2017
2018 return EXIT_SUCCESS;
2019}
2020/*** END OF REFACTORED CODE ***/
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