source: opengl-game/vulkan-ref.cpp@ f94eea9

feature/imgui-sdl points-test
Last change on this file since f94eea9 was f94eea9, checked in by Dmitry Portnoy <dmitry.portnoy@…>, 5 years ago

In vulkangame, add code to create image views
  • Property mode set to 100644
File size: 81.0 KB
Line 
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 VkDevice device;
167
168 VkQueue graphicsQueue;
169 VkQueue presentQueue;
170
171 VkSwapchainKHR swapChain;
172 vector<VkImage> swapChainImages;
173 VkFormat swapChainImageFormat;
174 VkExtent2D swapChainExtent;
175 vector<VkImageView> swapChainImageViews;
176/*** END OF REFACTORED CODE ***/
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, true);
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 createLogicalDevice();
319 createSwapChain();
320 createImageViews();
321/*** END OF REFACTORED CODE ***/
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
564 void createLogicalDevice() {
565 QueueFamilyIndices indices = findQueueFamilies(physicalDevice);
566
567 vector<VkDeviceQueueCreateInfo> queueCreateInfos;
568 set<uint32_t> uniqueQueueFamilies = {indices.graphicsFamily.value(), indices.presentFamily.value()};
569
570 float queuePriority = 1.0f;
571 for (uint32_t queueFamily : uniqueQueueFamilies) {
572 VkDeviceQueueCreateInfo queueCreateInfo = {};
573 queueCreateInfo.sType = VK_STRUCTURE_TYPE_DEVICE_QUEUE_CREATE_INFO;
574 queueCreateInfo.queueFamilyIndex = queueFamily;
575 queueCreateInfo.queueCount = 1;
576 queueCreateInfo.pQueuePriorities = &queuePriority;
577
578 queueCreateInfos.push_back(queueCreateInfo);
579 }
580
581 VkPhysicalDeviceFeatures deviceFeatures = {};
582 deviceFeatures.samplerAnisotropy = VK_TRUE;
583
584 VkDeviceCreateInfo createInfo = {};
585 createInfo.sType = VK_STRUCTURE_TYPE_DEVICE_CREATE_INFO;
586 createInfo.queueCreateInfoCount = static_cast<uint32_t>(queueCreateInfos.size());
587 createInfo.pQueueCreateInfos = queueCreateInfos.data();
588
589 createInfo.pEnabledFeatures = &deviceFeatures;
590
591 createInfo.enabledExtensionCount = static_cast<uint32_t>(deviceExtensions.size());
592 createInfo.ppEnabledExtensionNames = deviceExtensions.data();
593
594 // These fields are ignored by up-to-date Vulkan implementations,
595 // but it's a good idea to set them for backwards compatibility
596 if (enableValidationLayers) {
597 createInfo.enabledLayerCount = static_cast<uint32_t>(validationLayers.size());
598 createInfo.ppEnabledLayerNames = validationLayers.data();
599 } else {
600 createInfo.enabledLayerCount = 0;
601 }
602
603 if (vkCreateDevice(physicalDevice, &createInfo, nullptr, &device) != VK_SUCCESS) {
604 throw runtime_error("failed to create logical device!");
605 }
606
607 vkGetDeviceQueue(device, indices.graphicsFamily.value(), 0, &graphicsQueue);
608 vkGetDeviceQueue(device, indices.presentFamily.value(), 0, &presentQueue);
609 }
610
611 void createSwapChain() {
612 SwapChainSupportDetails swapChainSupport = querySwapChainSupport(physicalDevice);
613
614 VkSurfaceFormatKHR surfaceFormat = chooseSwapSurfaceFormat(swapChainSupport.formats);
615 VkPresentModeKHR presentMode = chooseSwapPresentMode(swapChainSupport.presentModes);
616 VkExtent2D extent = chooseSwapExtent(swapChainSupport.capabilities);
617
618 uint32_t imageCount = swapChainSupport.capabilities.minImageCount + 1;
619 if (swapChainSupport.capabilities.maxImageCount > 0 && imageCount > swapChainSupport.capabilities.maxImageCount) {
620 imageCount = swapChainSupport.capabilities.maxImageCount;
621 }
622
623 VkSwapchainCreateInfoKHR createInfo = {};
624 createInfo.sType = VK_STRUCTURE_TYPE_SWAPCHAIN_CREATE_INFO_KHR;
625 createInfo.surface = surface;
626 createInfo.minImageCount = imageCount;
627 createInfo.imageFormat = surfaceFormat.format;
628 createInfo.imageColorSpace = surfaceFormat.colorSpace;
629 createInfo.imageExtent = extent;
630 createInfo.imageArrayLayers = 1;
631 createInfo.imageUsage = VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT;
632
633 QueueFamilyIndices indices = findQueueFamilies(physicalDevice);
634 uint32_t queueFamilyIndices[] = {indices.graphicsFamily.value(), indices.presentFamily.value()};
635
636 if (indices.graphicsFamily != indices.presentFamily) {
637 createInfo.imageSharingMode = VK_SHARING_MODE_CONCURRENT;
638 createInfo.queueFamilyIndexCount = 2;
639 createInfo.pQueueFamilyIndices = queueFamilyIndices;
640 } else {
641 createInfo.imageSharingMode = VK_SHARING_MODE_EXCLUSIVE;
642 createInfo.queueFamilyIndexCount = 0;
643 createInfo.pQueueFamilyIndices = nullptr;
644 }
645
646 createInfo.preTransform = swapChainSupport.capabilities.currentTransform;
647 createInfo.compositeAlpha = VK_COMPOSITE_ALPHA_OPAQUE_BIT_KHR;
648 createInfo.presentMode = presentMode;
649 createInfo.clipped = VK_TRUE;
650 createInfo.oldSwapchain = VK_NULL_HANDLE;
651
652 if (vkCreateSwapchainKHR(device, &createInfo, nullptr, &swapChain) != VK_SUCCESS) {
653 throw runtime_error("failed to create swap chain!");
654 }
655
656 vkGetSwapchainImagesKHR(device, swapChain, &imageCount, nullptr);
657 swapChainImages.resize(imageCount);
658 vkGetSwapchainImagesKHR(device, swapChain, &imageCount, swapChainImages.data());
659
660 swapChainImageFormat = surfaceFormat.format;
661 swapChainExtent = extent;
662 }
663
664 SwapChainSupportDetails querySwapChainSupport(VkPhysicalDevice device) {
665 SwapChainSupportDetails details;
666
667 vkGetPhysicalDeviceSurfaceCapabilitiesKHR(device, surface, &details.capabilities);
668
669 uint32_t formatCount;
670 vkGetPhysicalDeviceSurfaceFormatsKHR(device, surface, &formatCount, nullptr);
671
672 if (formatCount != 0) {
673 details.formats.resize(formatCount);
674 vkGetPhysicalDeviceSurfaceFormatsKHR(device, surface, &formatCount, details.formats.data());
675 }
676
677 uint32_t presentModeCount;
678 vkGetPhysicalDeviceSurfacePresentModesKHR(device, surface, &presentModeCount, nullptr);
679
680 if (presentModeCount != 0) {
681 details.presentModes.resize(presentModeCount);
682 vkGetPhysicalDeviceSurfacePresentModesKHR(device, surface, &presentModeCount, details.presentModes.data());
683 }
684
685 return details;
686 }
687
688 VkSurfaceFormatKHR chooseSwapSurfaceFormat(const vector<VkSurfaceFormatKHR>& availableFormats) {
689 for (const auto& availableFormat : availableFormats) {
690 if (availableFormat.format == VK_FORMAT_B8G8R8A8_UNORM && availableFormat.colorSpace == VK_COLOR_SPACE_SRGB_NONLINEAR_KHR) {
691 return availableFormat;
692 }
693 }
694
695 return availableFormats[0];
696 }
697
698 VkPresentModeKHR chooseSwapPresentMode(const vector<VkPresentModeKHR>& availablePresentModes) {
699 VkPresentModeKHR bestMode = VK_PRESENT_MODE_FIFO_KHR;
700
701 for (const auto& availablePresentMode : availablePresentModes) {
702 if (availablePresentMode == VK_PRESENT_MODE_MAILBOX_KHR) {
703 return availablePresentMode;
704 }
705 else if (availablePresentMode == VK_PRESENT_MODE_IMMEDIATE_KHR) {
706 bestMode = availablePresentMode;
707 }
708 }
709
710 return bestMode;
711 }
712
713 VkExtent2D chooseSwapExtent(const VkSurfaceCapabilitiesKHR& capabilities) {
714 if (capabilities.currentExtent.width != numeric_limits<uint32_t>::max()) {
715 return capabilities.currentExtent;
716 } else {
717 VkExtent2D actualExtent = {
718 static_cast<uint32_t>(gui->getWindowWidth()),
719 static_cast<uint32_t>(gui->getWindowHeight())
720 };
721
722 actualExtent.width = std::max(capabilities.minImageExtent.width, std::min(capabilities.maxImageExtent.width, actualExtent.width));
723 actualExtent.height = std::max(capabilities.minImageExtent.height, std::min(capabilities.maxImageExtent.height, actualExtent.height));
724
725 return actualExtent;
726 }
727 }
728
729 void createImageViews() {
730 swapChainImageViews.resize(swapChainImages.size());
731
732 for (size_t i = 0; i < swapChainImages.size(); i++) {
733 swapChainImageViews[i] = createImageView(swapChainImages[i], swapChainImageFormat, VK_IMAGE_ASPECT_COLOR_BIT);
734 }
735 }
736/*** END OF REFACTORED CODE ***/
737
738 void createRenderPass() {
739 VkAttachmentDescription colorAttachment = {};
740 colorAttachment.format = swapChainImageFormat;
741 colorAttachment.samples = VK_SAMPLE_COUNT_1_BIT;
742 colorAttachment.loadOp = VK_ATTACHMENT_LOAD_OP_CLEAR;
743 colorAttachment.storeOp = VK_ATTACHMENT_STORE_OP_STORE;
744 colorAttachment.stencilLoadOp = VK_ATTACHMENT_LOAD_OP_DONT_CARE;
745 colorAttachment.stencilStoreOp = VK_ATTACHMENT_STORE_OP_DONT_CARE;
746 colorAttachment.initialLayout = VK_IMAGE_LAYOUT_UNDEFINED;
747 colorAttachment.finalLayout = VK_IMAGE_LAYOUT_PRESENT_SRC_KHR;
748
749 VkAttachmentReference colorAttachmentRef = {};
750 colorAttachmentRef.attachment = 0;
751 colorAttachmentRef.layout = VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL;
752
753 VkAttachmentDescription depthAttachment = {};
754 depthAttachment.format = findDepthFormat();
755 depthAttachment.samples = VK_SAMPLE_COUNT_1_BIT;
756 depthAttachment.loadOp = VK_ATTACHMENT_LOAD_OP_CLEAR;
757 depthAttachment.storeOp = VK_ATTACHMENT_STORE_OP_DONT_CARE;
758 depthAttachment.stencilLoadOp = VK_ATTACHMENT_LOAD_OP_DONT_CARE;
759 depthAttachment.stencilStoreOp = VK_ATTACHMENT_STORE_OP_DONT_CARE;
760 depthAttachment.initialLayout = VK_IMAGE_LAYOUT_UNDEFINED;
761 depthAttachment.finalLayout = VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL;
762
763 VkAttachmentReference depthAttachmentRef = {};
764 depthAttachmentRef.attachment = 1;
765 depthAttachmentRef.layout = VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL;
766
767 VkSubpassDescription subpass = {};
768 subpass.pipelineBindPoint = VK_PIPELINE_BIND_POINT_GRAPHICS;
769 subpass.colorAttachmentCount = 1;
770 subpass.pColorAttachments = &colorAttachmentRef;
771 subpass.pDepthStencilAttachment = &depthAttachmentRef;
772
773 VkSubpassDependency dependency = {};
774 dependency.srcSubpass = VK_SUBPASS_EXTERNAL;
775 dependency.dstSubpass = 0;
776 dependency.srcStageMask = VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT;
777 dependency.srcAccessMask = 0;
778 dependency.dstStageMask = VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT;
779 dependency.dstAccessMask = VK_ACCESS_COLOR_ATTACHMENT_READ_BIT | VK_ACCESS_COLOR_ATTACHMENT_WRITE_BIT;
780
781 array<VkAttachmentDescription, 2> attachments = { colorAttachment, depthAttachment };
782 VkRenderPassCreateInfo renderPassInfo = {};
783 renderPassInfo.sType = VK_STRUCTURE_TYPE_RENDER_PASS_CREATE_INFO;
784 renderPassInfo.attachmentCount = static_cast<uint32_t>(attachments.size());
785 renderPassInfo.pAttachments = attachments.data();
786 renderPassInfo.subpassCount = 1;
787 renderPassInfo.pSubpasses = &subpass;
788 renderPassInfo.dependencyCount = 1;
789 renderPassInfo.pDependencies = &dependency;
790
791 if (vkCreateRenderPass(device, &renderPassInfo, nullptr, &renderPass) != VK_SUCCESS) {
792 throw runtime_error("failed to create render pass!");
793 }
794 }
795
796 void initGraphicsPipelineInfo(GraphicsPipelineInfo& info,
797 const void* vertexData, int vertexSize, size_t numVertices,
798 const void* indexData, int indexSize, size_t numIndices) {
799 // Since there is only one array of vertex data, we use binding = 0
800 // I'll probably do that for the foreseeable future
801 // I can calculate the stride myself given info about all the varying attributes
802
803 info.bindingDescription.binding = 0;
804 info.bindingDescription.stride = vertexSize;
805 info.bindingDescription.inputRate = VK_VERTEX_INPUT_RATE_VERTEX;
806
807 info.numVertices = numVertices;
808 createVertexBuffer(info, vertexData, vertexSize * numVertices);
809
810 info.numIndices = numIndices;
811 createIndexBuffer(info, indexData, indexSize * numIndices);
812 }
813
814 void addAttributeDescription(GraphicsPipelineInfo& info, VkFormat format, size_t offset) {
815 VkVertexInputAttributeDescription attributeDesc = {};
816
817 attributeDesc.binding = 0;
818 attributeDesc.location = info.attributeDescriptions.size();
819 attributeDesc.format = format;
820 attributeDesc.offset = offset;
821
822 info.attributeDescriptions.push_back(attributeDesc);
823 }
824
825 void addDescriptorInfo(GraphicsPipelineInfo& info, VkDescriptorType type, VkShaderStageFlags stageFlags, vector<VkDescriptorBufferInfo>* bufferData, VkDescriptorImageInfo* imageData) {
826 info.descriptorInfoList.push_back({ type, stageFlags, bufferData, imageData });
827 }
828
829 void createDescriptorSetLayout(GraphicsPipelineInfo& info) {
830 vector<VkDescriptorSetLayoutBinding> bindings(info.descriptorInfoList.size());
831
832 for (size_t i = 0; i < bindings.size(); i++) {
833 bindings[i].binding = i;
834 bindings[i].descriptorCount = 1;
835 bindings[i].descriptorType = info.descriptorInfoList[i].type;
836 bindings[i].stageFlags = info.descriptorInfoList[i].stageFlags;
837 bindings[i].pImmutableSamplers = nullptr;
838 }
839
840 VkDescriptorSetLayoutCreateInfo layoutInfo = {};
841 layoutInfo.sType = VK_STRUCTURE_TYPE_DESCRIPTOR_SET_LAYOUT_CREATE_INFO;
842 layoutInfo.bindingCount = static_cast<uint32_t>(bindings.size());
843 layoutInfo.pBindings = bindings.data();
844
845 if (vkCreateDescriptorSetLayout(device, &layoutInfo, nullptr, &info.descriptorSetLayout) != VK_SUCCESS) {
846 throw runtime_error("failed to create descriptor set layout!");
847 }
848 }
849
850 void createGraphicsPipeline(string vertShaderFile, string fragShaderFile, GraphicsPipelineInfo& info) {
851 auto vertShaderCode = readFile(vertShaderFile);
852 auto fragShaderCode = readFile(fragShaderFile);
853
854 VkShaderModule vertShaderModule = createShaderModule(vertShaderCode);
855 VkShaderModule fragShaderModule = createShaderModule(fragShaderCode);
856
857 VkPipelineShaderStageCreateInfo vertShaderStageInfo = {};
858 vertShaderStageInfo.sType = VK_STRUCTURE_TYPE_PIPELINE_SHADER_STAGE_CREATE_INFO;
859 vertShaderStageInfo.stage = VK_SHADER_STAGE_VERTEX_BIT;
860 vertShaderStageInfo.module = vertShaderModule;
861 vertShaderStageInfo.pName = "main";
862
863 VkPipelineShaderStageCreateInfo fragShaderStageInfo = {};
864 fragShaderStageInfo.sType = VK_STRUCTURE_TYPE_PIPELINE_SHADER_STAGE_CREATE_INFO;
865 fragShaderStageInfo.stage = VK_SHADER_STAGE_FRAGMENT_BIT;
866 fragShaderStageInfo.module = fragShaderModule;
867 fragShaderStageInfo.pName = "main";
868
869 VkPipelineShaderStageCreateInfo shaderStages[] = { vertShaderStageInfo, fragShaderStageInfo };
870
871 VkPipelineVertexInputStateCreateInfo vertexInputInfo = {};
872 vertexInputInfo.sType = VK_STRUCTURE_TYPE_PIPELINE_VERTEX_INPUT_STATE_CREATE_INFO;
873
874 vertexInputInfo.vertexBindingDescriptionCount = 1;
875 vertexInputInfo.vertexAttributeDescriptionCount = static_cast<uint32_t>(info.attributeDescriptions.size());
876 vertexInputInfo.pVertexBindingDescriptions = &info.bindingDescription;
877 vertexInputInfo.pVertexAttributeDescriptions = info.attributeDescriptions.data();
878
879 VkPipelineInputAssemblyStateCreateInfo inputAssembly = {};
880 inputAssembly.sType = VK_STRUCTURE_TYPE_PIPELINE_INPUT_ASSEMBLY_STATE_CREATE_INFO;
881 inputAssembly.topology = VK_PRIMITIVE_TOPOLOGY_TRIANGLE_LIST;
882 inputAssembly.primitiveRestartEnable = VK_FALSE;
883
884 VkViewport viewport = {};
885 viewport.x = 0.0f;
886 viewport.y = 0.0f;
887 viewport.width = (float) swapChainExtent.width;
888 viewport.height = (float) swapChainExtent.height;
889 viewport.minDepth = 0.0f;
890 viewport.maxDepth = 1.0f;
891
892 VkRect2D scissor = {};
893 scissor.offset = { 0, 0 };
894 scissor.extent = swapChainExtent;
895
896 VkPipelineViewportStateCreateInfo viewportState = {};
897 viewportState.sType = VK_STRUCTURE_TYPE_PIPELINE_VIEWPORT_STATE_CREATE_INFO;
898 viewportState.viewportCount = 1;
899 viewportState.pViewports = &viewport;
900 viewportState.scissorCount = 1;
901 viewportState.pScissors = &scissor;
902
903 VkPipelineRasterizationStateCreateInfo rasterizer = {};
904 rasterizer.sType = VK_STRUCTURE_TYPE_PIPELINE_RASTERIZATION_STATE_CREATE_INFO;
905 rasterizer.depthClampEnable = VK_FALSE;
906 rasterizer.rasterizerDiscardEnable = VK_FALSE;
907 rasterizer.polygonMode = VK_POLYGON_MODE_FILL;
908 rasterizer.lineWidth = 1.0f;
909 rasterizer.cullMode = VK_CULL_MODE_BACK_BIT;
910 rasterizer.frontFace = VK_FRONT_FACE_COUNTER_CLOCKWISE;
911 rasterizer.depthBiasEnable = VK_FALSE;
912
913 VkPipelineMultisampleStateCreateInfo multisampling = {};
914 multisampling.sType = VK_STRUCTURE_TYPE_PIPELINE_MULTISAMPLE_STATE_CREATE_INFO;
915 multisampling.sampleShadingEnable = VK_FALSE;
916 multisampling.rasterizationSamples = VK_SAMPLE_COUNT_1_BIT;
917
918 VkPipelineColorBlendAttachmentState colorBlendAttachment = {};
919 colorBlendAttachment.colorWriteMask = VK_COLOR_COMPONENT_R_BIT | VK_COLOR_COMPONENT_G_BIT | VK_COLOR_COMPONENT_B_BIT | VK_COLOR_COMPONENT_A_BIT;
920 colorBlendAttachment.blendEnable = VK_TRUE;
921 colorBlendAttachment.colorBlendOp = VK_BLEND_OP_ADD;
922 colorBlendAttachment.srcColorBlendFactor = VK_BLEND_FACTOR_SRC_ALPHA;
923 colorBlendAttachment.dstColorBlendFactor = VK_BLEND_FACTOR_ONE_MINUS_SRC_ALPHA;
924 colorBlendAttachment.alphaBlendOp = VK_BLEND_OP_ADD;
925 colorBlendAttachment.srcAlphaBlendFactor = VK_BLEND_FACTOR_SRC_ALPHA;
926 colorBlendAttachment.dstAlphaBlendFactor = VK_BLEND_FACTOR_ONE_MINUS_SRC_ALPHA;
927
928 VkPipelineColorBlendStateCreateInfo colorBlending = {};
929 colorBlending.sType = VK_STRUCTURE_TYPE_PIPELINE_COLOR_BLEND_STATE_CREATE_INFO;
930 colorBlending.logicOpEnable = VK_FALSE;
931 colorBlending.logicOp = VK_LOGIC_OP_COPY;
932 colorBlending.attachmentCount = 1;
933 colorBlending.pAttachments = &colorBlendAttachment;
934 colorBlending.blendConstants[0] = 0.0f;
935 colorBlending.blendConstants[1] = 0.0f;
936 colorBlending.blendConstants[2] = 0.0f;
937 colorBlending.blendConstants[3] = 0.0f;
938
939 VkPipelineDepthStencilStateCreateInfo depthStencil = {};
940 depthStencil.sType = VK_STRUCTURE_TYPE_PIPELINE_DEPTH_STENCIL_STATE_CREATE_INFO;
941 depthStencil.depthTestEnable = VK_TRUE;
942 depthStencil.depthWriteEnable = VK_TRUE;
943 depthStencil.depthCompareOp = VK_COMPARE_OP_LESS;
944 depthStencil.depthBoundsTestEnable = VK_FALSE;
945 depthStencil.minDepthBounds = 0.0f;
946 depthStencil.maxDepthBounds = 1.0f;
947 depthStencil.stencilTestEnable = VK_FALSE;
948 depthStencil.front = {};
949 depthStencil.back = {};
950
951 VkPipelineLayoutCreateInfo pipelineLayoutInfo = {};
952 pipelineLayoutInfo.sType = VK_STRUCTURE_TYPE_PIPELINE_LAYOUT_CREATE_INFO;
953 pipelineLayoutInfo.setLayoutCount = 1;
954 pipelineLayoutInfo.pSetLayouts = &info.descriptorSetLayout;
955 pipelineLayoutInfo.pushConstantRangeCount = 0;
956
957 if (vkCreatePipelineLayout(device, &pipelineLayoutInfo, nullptr, &info.pipelineLayout) != VK_SUCCESS) {
958 throw runtime_error("failed to create pipeline layout!");
959 }
960
961 VkGraphicsPipelineCreateInfo pipelineInfo = {};
962 pipelineInfo.sType = VK_STRUCTURE_TYPE_GRAPHICS_PIPELINE_CREATE_INFO;
963 pipelineInfo.stageCount = 2;
964 pipelineInfo.pStages = shaderStages;
965 pipelineInfo.pVertexInputState = &vertexInputInfo;
966 pipelineInfo.pInputAssemblyState = &inputAssembly;
967 pipelineInfo.pViewportState = &viewportState;
968 pipelineInfo.pRasterizationState = &rasterizer;
969 pipelineInfo.pMultisampleState = &multisampling;
970 pipelineInfo.pDepthStencilState = &depthStencil;
971 pipelineInfo.pColorBlendState = &colorBlending;
972 pipelineInfo.pDynamicState = nullptr;
973 pipelineInfo.layout = info.pipelineLayout;
974 pipelineInfo.renderPass = renderPass;
975 pipelineInfo.subpass = 0;
976 pipelineInfo.basePipelineHandle = VK_NULL_HANDLE;
977 pipelineInfo.basePipelineIndex = -1;
978
979 if (vkCreateGraphicsPipelines(device, VK_NULL_HANDLE, 1, &pipelineInfo, nullptr, &info.pipeline) != VK_SUCCESS) {
980 throw runtime_error("failed to create graphics pipeline!");
981 }
982
983 vkDestroyShaderModule(device, vertShaderModule, nullptr);
984 vkDestroyShaderModule(device, fragShaderModule, nullptr);
985 }
986
987 VkShaderModule createShaderModule(const vector<char>& code) {
988 VkShaderModuleCreateInfo createInfo = {};
989 createInfo.sType = VK_STRUCTURE_TYPE_SHADER_MODULE_CREATE_INFO;
990 createInfo.codeSize = code.size();
991 createInfo.pCode = reinterpret_cast<const uint32_t*>(code.data());
992
993 VkShaderModule shaderModule;
994 if (vkCreateShaderModule(device, &createInfo, nullptr, &shaderModule) != VK_SUCCESS) {
995 throw runtime_error("failed to create shader module!");
996 }
997
998 return shaderModule;
999 }
1000
1001 void createFramebuffers() {
1002 swapChainFramebuffers.resize(swapChainImageViews.size());
1003
1004 for (size_t i = 0; i < swapChainImageViews.size(); i++) {
1005 array <VkImageView, 2> attachments = {
1006 swapChainImageViews[i],
1007 depthImageView
1008 };
1009
1010 VkFramebufferCreateInfo framebufferInfo = {};
1011 framebufferInfo.sType = VK_STRUCTURE_TYPE_FRAMEBUFFER_CREATE_INFO;
1012 framebufferInfo.renderPass = renderPass;
1013 framebufferInfo.attachmentCount = static_cast<uint32_t>(attachments.size());
1014 framebufferInfo.pAttachments = attachments.data();
1015 framebufferInfo.width = swapChainExtent.width;
1016 framebufferInfo.height = swapChainExtent.height;
1017 framebufferInfo.layers = 1;
1018
1019 if (vkCreateFramebuffer(device, &framebufferInfo, nullptr, &swapChainFramebuffers[i]) != VK_SUCCESS) {
1020 throw runtime_error("failed to create framebuffer!");
1021 }
1022 }
1023 }
1024
1025 void createCommandPool() {
1026 QueueFamilyIndices queueFamilyIndices = findQueueFamilies(physicalDevice);
1027
1028 VkCommandPoolCreateInfo poolInfo = {};
1029 poolInfo.sType = VK_STRUCTURE_TYPE_COMMAND_POOL_CREATE_INFO;
1030 poolInfo.queueFamilyIndex = queueFamilyIndices.graphicsFamily.value();
1031 poolInfo.flags = 0;
1032
1033 if (vkCreateCommandPool(device, &poolInfo, nullptr, &commandPool) != VK_SUCCESS) {
1034 throw runtime_error("failed to create graphics command pool!");
1035 }
1036 }
1037
1038/*** START OF REFACTORED CODE ***/
1039 QueueFamilyIndices findQueueFamilies(VkPhysicalDevice device) {
1040 QueueFamilyIndices indices;
1041
1042 uint32_t queueFamilyCount = 0;
1043 vkGetPhysicalDeviceQueueFamilyProperties(device, &queueFamilyCount, nullptr);
1044
1045 vector<VkQueueFamilyProperties> queueFamilies(queueFamilyCount);
1046 vkGetPhysicalDeviceQueueFamilyProperties(device, &queueFamilyCount, queueFamilies.data());
1047
1048 int i = 0;
1049 for (const auto& queueFamily : queueFamilies) {
1050 if (queueFamily.queueCount > 0 && queueFamily.queueFlags & VK_QUEUE_GRAPHICS_BIT) {
1051 indices.graphicsFamily = i;
1052 }
1053
1054 VkBool32 presentSupport = false;
1055 vkGetPhysicalDeviceSurfaceSupportKHR(device, i, surface, &presentSupport);
1056
1057 if (queueFamily.queueCount > 0 && presentSupport) {
1058 indices.presentFamily = i;
1059 }
1060
1061 if (indices.isComplete()) {
1062 break;
1063 }
1064
1065 i++;
1066 }
1067
1068 return indices;
1069 }
1070/*** END OF REFACTORED CODE ***/
1071
1072 void createDepthResources() {
1073 VkFormat depthFormat = findDepthFormat();
1074
1075 createImage(swapChainExtent.width, swapChainExtent.height, depthFormat, VK_IMAGE_TILING_OPTIMAL,
1076 VK_IMAGE_USAGE_DEPTH_STENCIL_ATTACHMENT_BIT, VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT, depthImage, depthImageMemory);
1077 depthImageView = createImageView(depthImage, depthFormat, VK_IMAGE_ASPECT_DEPTH_BIT);
1078
1079 transitionImageLayout(depthImage, depthFormat, VK_IMAGE_LAYOUT_UNDEFINED, VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL);
1080 }
1081
1082 VkFormat findDepthFormat() {
1083 return findSupportedFormat(
1084 { VK_FORMAT_D32_SFLOAT, VK_FORMAT_D32_SFLOAT_S8_UINT, VK_FORMAT_D24_UNORM_S8_UINT },
1085 VK_IMAGE_TILING_OPTIMAL,
1086 VK_FORMAT_FEATURE_DEPTH_STENCIL_ATTACHMENT_BIT
1087 );
1088 }
1089
1090 VkFormat findSupportedFormat(const vector<VkFormat>& candidates, VkImageTiling tiling,
1091 VkFormatFeatureFlags features) {
1092 for (VkFormat format : candidates) {
1093 VkFormatProperties props;
1094 vkGetPhysicalDeviceFormatProperties(physicalDevice, format, &props);
1095
1096 if (tiling == VK_IMAGE_TILING_LINEAR &&
1097 (props.linearTilingFeatures & features) == features) {
1098 return format;
1099 } else if (tiling == VK_IMAGE_TILING_OPTIMAL &&
1100 (props.optimalTilingFeatures & features) == features) {
1101 return format;
1102 }
1103 }
1104
1105 throw runtime_error("failed to find supported format!");
1106 }
1107
1108 bool hasStencilComponent(VkFormat format) {
1109 return format == VK_FORMAT_D32_SFLOAT_S8_UINT || format == VK_FORMAT_D24_UNORM_S8_UINT;
1110 }
1111
1112 void createImageResources(string filename, VkImage& image, VkDeviceMemory& imageMemory, VkImageView& view) {
1113 int texWidth, texHeight, texChannels;
1114
1115 stbi_uc* pixels = stbi_load(filename.c_str(), &texWidth, &texHeight, &texChannels, STBI_rgb_alpha);
1116 VkDeviceSize imageSize = texWidth * texHeight * 4;
1117
1118 if (!pixels) {
1119 throw runtime_error("failed to load texture image!");
1120 }
1121
1122 VkBuffer stagingBuffer;
1123 VkDeviceMemory stagingBufferMemory;
1124
1125 createBuffer(imageSize, VK_BUFFER_USAGE_TRANSFER_SRC_BIT,
1126 VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | VK_MEMORY_PROPERTY_HOST_COHERENT_BIT,
1127 stagingBuffer, stagingBufferMemory);
1128
1129 void* data;
1130
1131 vkMapMemory(device, stagingBufferMemory, 0, imageSize, 0, &data);
1132 memcpy(data, pixels, static_cast<size_t>(imageSize));
1133 vkUnmapMemory(device, stagingBufferMemory);
1134
1135 stbi_image_free(pixels);
1136
1137 createImage(texWidth, texHeight, VK_FORMAT_R8G8B8A8_UNORM, VK_IMAGE_TILING_OPTIMAL,
1138 VK_IMAGE_USAGE_TRANSFER_DST_BIT | VK_IMAGE_USAGE_SAMPLED_BIT,
1139 VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT, image, imageMemory);
1140
1141 transitionImageLayout(image, VK_FORMAT_R8G8B8A8_UNORM, VK_IMAGE_LAYOUT_UNDEFINED, VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL);
1142 copyBufferToImage(stagingBuffer, image, static_cast<uint32_t>(texWidth), static_cast<uint32_t>(texHeight));
1143 transitionImageLayout(image, VK_FORMAT_R8G8B8A8_UNORM, VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL, VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL);
1144
1145 vkDestroyBuffer(device, stagingBuffer, nullptr);
1146 vkFreeMemory(device, stagingBufferMemory, nullptr);
1147
1148 view = createImageView(image, VK_FORMAT_R8G8B8A8_UNORM, VK_IMAGE_ASPECT_COLOR_BIT);
1149 }
1150
1151 void createImageResourcesFromSDLTexture(SDL_Texture* texture, VkImage& image, VkDeviceMemory& imageMemory, VkImageView& view) {
1152 int a, w, h;
1153
1154 // I only need this here for the width and height, which are constants, so just use those instead
1155 SDL_QueryTexture(texture, nullptr, &a, &w, &h);
1156
1157 createImage(w, h, VK_FORMAT_R8G8B8A8_UNORM, VK_IMAGE_TILING_OPTIMAL,
1158 VK_IMAGE_USAGE_TRANSFER_DST_BIT | VK_IMAGE_USAGE_SAMPLED_BIT,
1159 VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT, image, imageMemory);
1160
1161 view = createImageView(image, VK_FORMAT_R8G8B8A8_UNORM, VK_IMAGE_ASPECT_COLOR_BIT);
1162 }
1163
1164 void populateImageFromSDLTexture(SDL_Texture* texture, VkImage& image) {
1165 int a, w, h;
1166
1167 SDL_QueryTexture(texture, nullptr, &a, &w, &h);
1168
1169 VkDeviceSize imageSize = w * h * 4;
1170 unsigned char* pixels = new unsigned char[imageSize];
1171
1172 SDL_RenderReadPixels(gRenderer, nullptr, SDL_PIXELFORMAT_ABGR8888, pixels, w * 4);
1173
1174 VkBuffer stagingBuffer;
1175 VkDeviceMemory stagingBufferMemory;
1176
1177 createBuffer(imageSize,
1178 VK_BUFFER_USAGE_TRANSFER_DST_BIT | VK_BUFFER_USAGE_TRANSFER_SRC_BIT,
1179 VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT,
1180 stagingBuffer, stagingBufferMemory);
1181
1182 void* data;
1183
1184 vkMapMemory(device, stagingBufferMemory, 0, VK_WHOLE_SIZE, 0, &data);
1185 memcpy(data, pixels, static_cast<size_t>(imageSize));
1186
1187 VkMappedMemoryRange mappedMemoryRange = {};
1188 mappedMemoryRange.sType = VK_STRUCTURE_TYPE_MAPPED_MEMORY_RANGE;
1189 mappedMemoryRange.memory = stagingBufferMemory;
1190 mappedMemoryRange.offset = 0;
1191 mappedMemoryRange.size = VK_WHOLE_SIZE;
1192
1193 // TODO: Should probably check that the function succeeded
1194 vkFlushMappedMemoryRanges(device, 1, &mappedMemoryRange);
1195 vkUnmapMemory(device, stagingBufferMemory);
1196
1197 delete[] pixels;
1198
1199 transitionImageLayout(image, VK_FORMAT_R8G8B8A8_UNORM, VK_IMAGE_LAYOUT_UNDEFINED, VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL);
1200 copyBufferToImage(stagingBuffer, image, static_cast<uint32_t>(w), static_cast<uint32_t>(h));
1201 transitionImageLayout(image, VK_FORMAT_R8G8B8A8_UNORM, VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL, VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL);
1202
1203 vkDestroyBuffer(device, stagingBuffer, nullptr);
1204 vkFreeMemory(device, stagingBufferMemory, nullptr);
1205 }
1206
1207 void createImage(uint32_t width, uint32_t height, VkFormat format, VkImageTiling tiling, VkImageUsageFlags usage,
1208 VkMemoryPropertyFlags properties, VkImage& image, VkDeviceMemory& imageMemory) {
1209 VkImageCreateInfo imageInfo = {};
1210 imageInfo.sType = VK_STRUCTURE_TYPE_IMAGE_CREATE_INFO;
1211 imageInfo.imageType = VK_IMAGE_TYPE_2D;
1212 imageInfo.extent.width = width;
1213 imageInfo.extent.height = height;
1214 imageInfo.extent.depth = 1;
1215 imageInfo.mipLevels = 1;
1216 imageInfo.arrayLayers = 1;
1217 imageInfo.format = format;
1218 imageInfo.tiling = tiling;
1219 imageInfo.initialLayout = VK_IMAGE_LAYOUT_UNDEFINED;
1220 imageInfo.usage = usage;
1221 imageInfo.samples = VK_SAMPLE_COUNT_1_BIT;
1222 imageInfo.sharingMode = VK_SHARING_MODE_EXCLUSIVE;
1223
1224 if (vkCreateImage(device, &imageInfo, nullptr, &image) != VK_SUCCESS) {
1225 throw runtime_error("failed to create image!");
1226 }
1227
1228 VkMemoryRequirements memRequirements;
1229 vkGetImageMemoryRequirements(device, image, &memRequirements);
1230
1231 VkMemoryAllocateInfo allocInfo = {};
1232 allocInfo.sType = VK_STRUCTURE_TYPE_MEMORY_ALLOCATE_INFO;
1233 allocInfo.allocationSize = memRequirements.size;
1234 allocInfo.memoryTypeIndex = findMemoryType(memRequirements.memoryTypeBits, properties);
1235
1236 if (vkAllocateMemory(device, &allocInfo, nullptr, &imageMemory) != VK_SUCCESS) {
1237 throw runtime_error("failed to allocate image memory!");
1238 }
1239
1240 vkBindImageMemory(device, image, imageMemory, 0);
1241 }
1242
1243 void transitionImageLayout(VkImage image, VkFormat format, VkImageLayout oldLayout, VkImageLayout newLayout) {
1244 VkCommandBuffer commandBuffer = beginSingleTimeCommands();
1245
1246 VkImageMemoryBarrier barrier = {};
1247 barrier.sType = VK_STRUCTURE_TYPE_IMAGE_MEMORY_BARRIER;
1248 barrier.oldLayout = oldLayout;
1249 barrier.newLayout = newLayout;
1250 barrier.srcQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED;
1251 barrier.dstQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED;
1252 barrier.image = image;
1253
1254 if (newLayout == VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL) {
1255 barrier.subresourceRange.aspectMask = VK_IMAGE_ASPECT_DEPTH_BIT;
1256
1257 if (hasStencilComponent(format)) {
1258 barrier.subresourceRange.aspectMask |= VK_IMAGE_ASPECT_STENCIL_BIT;
1259 }
1260 } else {
1261 barrier.subresourceRange.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT;
1262 }
1263
1264 barrier.subresourceRange.baseMipLevel = 0;
1265 barrier.subresourceRange.levelCount = 1;
1266 barrier.subresourceRange.baseArrayLayer = 0;
1267 barrier.subresourceRange.layerCount = 1;
1268
1269 VkPipelineStageFlags sourceStage;
1270 VkPipelineStageFlags destinationStage;
1271
1272 if (oldLayout == VK_IMAGE_LAYOUT_UNDEFINED && newLayout == VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL) {
1273 barrier.srcAccessMask = 0;
1274 barrier.dstAccessMask = VK_ACCESS_TRANSFER_WRITE_BIT;
1275
1276 sourceStage = VK_PIPELINE_STAGE_TOP_OF_PIPE_BIT;
1277 destinationStage = VK_PIPELINE_STAGE_TRANSFER_BIT;
1278 } else if (oldLayout == VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL && newLayout == VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL) {
1279 barrier.srcAccessMask = VK_ACCESS_TRANSFER_WRITE_BIT;
1280 barrier.dstAccessMask = VK_ACCESS_SHADER_READ_BIT;
1281
1282 sourceStage = VK_PIPELINE_STAGE_TRANSFER_BIT;
1283 destinationStage = VK_PIPELINE_STAGE_FRAGMENT_SHADER_BIT;
1284 } else if (oldLayout == VK_IMAGE_LAYOUT_UNDEFINED && newLayout == VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL) {
1285 barrier.srcAccessMask = 0;
1286 barrier.dstAccessMask = VK_ACCESS_DEPTH_STENCIL_ATTACHMENT_READ_BIT | VK_ACCESS_DEPTH_STENCIL_ATTACHMENT_WRITE_BIT;
1287
1288 sourceStage = VK_PIPELINE_STAGE_TOP_OF_PIPE_BIT;
1289 destinationStage = VK_PIPELINE_STAGE_EARLY_FRAGMENT_TESTS_BIT;
1290 } else {
1291 throw invalid_argument("unsupported layout transition!");
1292 }
1293
1294 vkCmdPipelineBarrier(
1295 commandBuffer,
1296 sourceStage, destinationStage,
1297 0,
1298 0, nullptr,
1299 0, nullptr,
1300 1, &barrier
1301 );
1302
1303 endSingleTimeCommands(commandBuffer);
1304 }
1305
1306 void copyBufferToImage(VkBuffer buffer, VkImage image, uint32_t width, uint32_t height) {
1307 VkCommandBuffer commandBuffer = beginSingleTimeCommands();
1308
1309 VkBufferImageCopy region = {};
1310 region.bufferOffset = 0;
1311 region.bufferRowLength = 0;
1312 region.bufferImageHeight = 0;
1313 region.imageSubresource.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT;
1314 region.imageSubresource.mipLevel = 0;
1315 region.imageSubresource.baseArrayLayer = 0;
1316 region.imageSubresource.layerCount = 1;
1317 region.imageOffset = { 0, 0, 0 };
1318 region.imageExtent = { width, height, 1 };
1319
1320 vkCmdCopyBufferToImage(
1321 commandBuffer,
1322 buffer,
1323 image,
1324 VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL,
1325 1,
1326 &region
1327 );
1328
1329 endSingleTimeCommands(commandBuffer);
1330 }
1331
1332/*** START OF REFACTORED CODE ***/
1333 VkImageView createImageView(VkImage image, VkFormat format, VkImageAspectFlags aspectFlags) {
1334 VkImageViewCreateInfo viewInfo = {};
1335 viewInfo.sType = VK_STRUCTURE_TYPE_IMAGE_VIEW_CREATE_INFO;
1336 viewInfo.image = image;
1337 viewInfo.viewType = VK_IMAGE_VIEW_TYPE_2D;
1338 viewInfo.format = format;
1339
1340 viewInfo.components.r = VK_COMPONENT_SWIZZLE_IDENTITY;
1341 viewInfo.components.g = VK_COMPONENT_SWIZZLE_IDENTITY;
1342 viewInfo.components.b = VK_COMPONENT_SWIZZLE_IDENTITY;
1343 viewInfo.components.a = VK_COMPONENT_SWIZZLE_IDENTITY;
1344
1345 viewInfo.subresourceRange.aspectMask = aspectFlags;
1346 viewInfo.subresourceRange.baseMipLevel = 0;
1347 viewInfo.subresourceRange.levelCount = 1;
1348 viewInfo.subresourceRange.baseArrayLayer = 0;
1349 viewInfo.subresourceRange.layerCount = 1;
1350
1351 VkImageView imageView;
1352 if (vkCreateImageView(device, &viewInfo, nullptr, &imageView) != VK_SUCCESS) {
1353 throw runtime_error("failed to create texture image view!");
1354 }
1355
1356 return imageView;
1357 }
1358/*** END OF REFACTORED CODE ***/
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/*** START OF REFACTORED CODE ***/
1677 void mainLoop() {
1678 // TODO: Create some generic event-handling functions in game-gui-*
1679 SDL_Event e;
1680 bool quit = false;
1681
1682 while (!quit) {
1683 while (SDL_PollEvent(&e)) {
1684 if (e.type == SDL_QUIT) {
1685 quit = true;
1686 }
1687 if (e.type == SDL_KEYDOWN) {
1688 if (e.key.keysym.scancode == SDL_SCANCODE_ESCAPE) {
1689 quit = true;
1690 }
1691 }
1692 if (e.type == SDL_MOUSEBUTTONDOWN) {
1693 quit = true;
1694 }
1695/*** END OF REFACTORED CODE ***/
1696 if (e.type == SDL_WINDOWEVENT) {
1697 if (e.window.event == SDL_WINDOWEVENT_SIZE_CHANGED ||
1698 e.window.event == SDL_WINDOWEVENT_MINIMIZED) {
1699 framebufferResized = true;
1700 }
1701 }
1702/*** START OF REFACTORED CODE ***/
1703 }
1704
1705 drawUI();
1706
1707 drawFrame();
1708 }
1709
1710 vkDeviceWaitIdle(device);
1711 }
1712
1713 void drawFrame() {
1714/*** END OF REFACTORED CODE ***/
1715 vkWaitForFences(device, 1, &inFlightFences[currentFrame], VK_TRUE, numeric_limits<uint64_t>::max());
1716
1717 uint32_t imageIndex;
1718
1719 VkResult result = vkAcquireNextImageKHR(device, swapChain, numeric_limits<uint64_t>::max(),
1720 imageAvailableSemaphores[currentFrame], VK_NULL_HANDLE, &imageIndex);
1721
1722 if (result == VK_ERROR_OUT_OF_DATE_KHR) {
1723 recreateSwapChain();
1724 return;
1725 } else if (result != VK_SUCCESS && result != VK_SUBOPTIMAL_KHR) {
1726 throw runtime_error("failed to acquire swap chain image!");
1727 }
1728
1729 updateUniformBuffer(imageIndex);
1730
1731 VkSubmitInfo submitInfo = {};
1732 submitInfo.sType = VK_STRUCTURE_TYPE_SUBMIT_INFO;
1733
1734 VkSemaphore waitSemaphores[] = { imageAvailableSemaphores[currentFrame] };
1735 VkPipelineStageFlags waitStages[] = { VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT };
1736
1737 submitInfo.waitSemaphoreCount = 1;
1738 submitInfo.pWaitSemaphores = waitSemaphores;
1739 submitInfo.pWaitDstStageMask = waitStages;
1740 submitInfo.commandBufferCount = 1;
1741 submitInfo.pCommandBuffers = &commandBuffers[imageIndex];
1742
1743 VkSemaphore signalSemaphores[] = { renderFinishedSemaphores[currentFrame] };
1744
1745 submitInfo.signalSemaphoreCount = 1;
1746 submitInfo.pSignalSemaphores = signalSemaphores;
1747
1748 vkResetFences(device, 1, &inFlightFences[currentFrame]);
1749
1750 if (vkQueueSubmit(graphicsQueue, 1, &submitInfo, inFlightFences[currentFrame]) != VK_SUCCESS) {
1751 throw runtime_error("failed to submit draw command buffer!");
1752 }
1753
1754 VkPresentInfoKHR presentInfo = {};
1755 presentInfo.sType = VK_STRUCTURE_TYPE_PRESENT_INFO_KHR;
1756 presentInfo.waitSemaphoreCount = 1;
1757 presentInfo.pWaitSemaphores = signalSemaphores;
1758
1759 VkSwapchainKHR swapChains[] = { swapChain };
1760 presentInfo.swapchainCount = 1;
1761 presentInfo.pSwapchains = swapChains;
1762 presentInfo.pImageIndices = &imageIndex;
1763 presentInfo.pResults = nullptr;
1764
1765 result = vkQueuePresentKHR(presentQueue, &presentInfo);
1766
1767 if (result == VK_ERROR_OUT_OF_DATE_KHR || result == VK_SUBOPTIMAL_KHR || framebufferResized) {
1768 framebufferResized = false;
1769 recreateSwapChain();
1770 } else if (result != VK_SUCCESS) {
1771 throw runtime_error("failed to present swap chain image!");
1772 }
1773
1774 currentFrame = (currentFrame + 1) % MAX_FRAMES_IN_FLIGHT;
1775 currentFrame = (currentFrame + 1) % MAX_FRAMES_IN_FLIGHT;
1776/*** START OF REFACTORED CODE ***/
1777 }
1778
1779 void drawUI() {
1780/*** END OF REFACTORED CODE ***/
1781 // TODO: Since I currently don't use any other render targets,
1782 // I may as well set this once before the render loop
1783 SDL_SetRenderTarget(gRenderer, uiOverlay);
1784
1785 SDL_SetRenderDrawColor(gRenderer, 0x00, 0x00, 0x00, 0x00);
1786 SDL_RenderClear(gRenderer);
1787
1788 SDL_Rect rect;
1789
1790 rect = {280, 220, 100, 100};
1791 SDL_SetRenderDrawColor(gRenderer, 0x00, 0xFF, 0x00, 0xFF);
1792 SDL_RenderFillRect(gRenderer, &rect);
1793 SDL_SetRenderDrawColor(gRenderer, 0x00, 0x9F, 0x9F, 0xFF);
1794
1795 rect = {10, 10, 0, 0};
1796 SDL_QueryTexture(uiText, nullptr, nullptr, &(rect.w), &(rect.h));
1797 SDL_RenderCopy(gRenderer, uiText, nullptr, &rect);
1798
1799 rect = {10, 80, 0, 0};
1800 SDL_QueryTexture(uiImage, nullptr, nullptr, &(rect.w), &(rect.h));
1801 SDL_RenderCopy(gRenderer, uiImage, nullptr, &rect);
1802
1803 SDL_SetRenderDrawColor(gRenderer, 0x00, 0x00, 0xFF, 0xFF);
1804 SDL_RenderDrawLine(gRenderer, 50, 5, 150, 500);
1805
1806 populateImageFromSDLTexture(uiOverlay, sdlOverlayImage);
1807/*** START OF REFACTORED CODE ***/
1808 }
1809/*** END OF REFACTORED CODE ***/
1810
1811 void updateUniformBuffer(uint32_t currentImage) {
1812 static auto startTime = chrono::high_resolution_clock::now();
1813
1814 auto currentTime = chrono::high_resolution_clock::now();
1815 float time = chrono::duration<float, chrono::seconds::period>(currentTime - startTime).count();
1816
1817 UniformBufferObject ubo = {};
1818 ubo.model = rotate(glm::mat4(1.0f), time * glm::radians(90.0f), glm::vec3(0.0f, 0.0f, 1.0f));
1819 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));
1820 ubo.proj = perspective(radians(45.0f), swapChainExtent.width / (float)swapChainExtent.height, 0.1f, 10.0f);
1821 ubo.proj[1][1] *= -1; // flip the y-axis so that +y is up
1822
1823 void* data;
1824 vkMapMemory(device, uniformBuffersMemory[currentImage], 0, sizeof(ubo), 0, &data);
1825 memcpy(data, &ubo, sizeof(ubo));
1826 vkUnmapMemory(device, uniformBuffersMemory[currentImage]);
1827 }
1828
1829 void recreateSwapChain() {
1830 gui->refreshWindowSize();
1831
1832 while (gui->getWindowWidth() == 0 || gui->getWindowHeight() == 0 ||
1833 (SDL_GetWindowFlags(window) & SDL_WINDOW_MINIMIZED) != 0) {
1834 SDL_WaitEvent(nullptr);
1835 gui->refreshWindowSize();
1836 }
1837
1838 vkDeviceWaitIdle(device);
1839
1840 cleanupSwapChain();
1841
1842 createSwapChain();
1843 createImageViews();
1844 createRenderPass();
1845
1846 createBufferResources();
1847 }
1848
1849 void createBufferResources() {
1850 createDepthResources();
1851 createFramebuffers();
1852 createUniformBuffers();
1853
1854 createGraphicsPipeline("shaders/scene-vert.spv", "shaders/scene-frag.spv", scenePipeline);
1855 createDescriptorPool(scenePipeline);
1856 createDescriptorSets(scenePipeline);
1857
1858 createGraphicsPipeline("shaders/overlay-vert.spv", "shaders/overlay-frag.spv", overlayPipeline);
1859 createDescriptorPool(overlayPipeline);
1860 createDescriptorSets(overlayPipeline);
1861
1862 createCommandBuffers();
1863 }
1864
1865/*** START OF REFACTORED CODE ***/
1866 void cleanup() {
1867 cleanupSwapChain();
1868/*** END OF REFACTORED CODE ***/
1869
1870 vkDestroySampler(device, textureSampler, nullptr);
1871
1872 vkDestroyImageView(device, textureImageView, nullptr);
1873 vkDestroyImage(device, textureImage, nullptr);
1874 vkFreeMemory(device, textureImageMemory, nullptr);
1875
1876 vkDestroyImageView(device, overlayImageView, nullptr);
1877 vkDestroyImage(device, overlayImage, nullptr);
1878 vkFreeMemory(device, overlayImageMemory, nullptr);
1879
1880 vkDestroyImageView(device, sdlOverlayImageView, nullptr);
1881 vkDestroyImage(device, sdlOverlayImage, nullptr);
1882 vkFreeMemory(device, sdlOverlayImageMemory, nullptr);
1883
1884 cleanupPipelineBuffers(scenePipeline);
1885 cleanupPipelineBuffers(overlayPipeline);
1886
1887 for (size_t i = 0; i < MAX_FRAMES_IN_FLIGHT; i++) {
1888 vkDestroySemaphore(device, renderFinishedSemaphores[i], nullptr);
1889 vkDestroySemaphore(device, imageAvailableSemaphores[i], nullptr);
1890 vkDestroyFence(device, inFlightFences[i], nullptr);
1891 }
1892
1893 vkDestroyCommandPool(device, commandPool, nullptr);
1894/*** START OF REFACTORED CODE ***/
1895 vkDestroyDevice(device, nullptr);
1896 vkDestroySurfaceKHR(instance, surface, nullptr);
1897
1898 if (enableValidationLayers) {
1899 DestroyDebugUtilsMessengerEXT(instance, debugMessenger, nullptr);
1900 }
1901
1902 vkDestroyInstance(instance, nullptr);
1903/*** END OF REFACTORED CODE ***/
1904
1905 // TODO: Check if any of these functions accept null parameters
1906 // If they do, I don't need to check for that
1907
1908 if (uiOverlay != nullptr) {
1909 SDL_DestroyTexture(uiOverlay);
1910 uiOverlay = nullptr;
1911 }
1912
1913 TTF_CloseFont(gFont);
1914 gFont = nullptr;
1915
1916 if (uiText != nullptr) {
1917 SDL_DestroyTexture(uiText);
1918 uiText = nullptr;
1919 }
1920
1921 if (uiImage != nullptr) {
1922 SDL_DestroyTexture(uiImage);
1923 uiImage = nullptr;
1924 }
1925
1926/*** START OF REFACTORED CODE ***/
1927 SDL_DestroyRenderer(gRenderer);
1928 gRenderer = nullptr;
1929
1930 gui->destroyWindow();
1931 gui->shutdown();
1932 delete gui;
1933 }
1934
1935 void cleanupSwapChain() {
1936/*** END OF REFACTORED CODE ***/
1937 vkDestroyImageView(device, depthImageView, nullptr);
1938 vkDestroyImage(device, depthImage, nullptr);
1939 vkFreeMemory(device, depthImageMemory, nullptr);
1940
1941 for (auto framebuffer : swapChainFramebuffers) {
1942 vkDestroyFramebuffer(device, framebuffer, nullptr);
1943 }
1944
1945 vkFreeCommandBuffers(device, commandPool, static_cast<uint32_t>(commandBuffers.size()), commandBuffers.data());
1946
1947 cleanupPipeline(scenePipeline);
1948 cleanupPipeline(overlayPipeline);
1949
1950 vkDestroyRenderPass(device, renderPass, nullptr);
1951
1952/*** START OF REFACTORED CODE ***/
1953 for (auto imageView : swapChainImageViews) {
1954 vkDestroyImageView(device, imageView, nullptr);
1955 }
1956
1957 vkDestroySwapchainKHR(device, swapChain, nullptr);
1958/*** END OF REFACTORED CODE ***/
1959
1960 for (size_t i = 0; i < swapChainImages.size(); i++) {
1961 vkDestroyBuffer(device, uniformBuffers[i], nullptr);
1962 vkFreeMemory(device, uniformBuffersMemory[i], nullptr);
1963 }
1964/*** START OF REFACTORED CODE ***/
1965 }
1966/*** END OF REFACTORED CODE ***/
1967
1968 void cleanupPipeline(GraphicsPipelineInfo& pipeline) {
1969 vkDestroyPipeline(device, pipeline.pipeline, nullptr);
1970 vkDestroyDescriptorPool(device, pipeline.descriptorPool, nullptr);
1971 vkDestroyPipelineLayout(device, pipeline.pipelineLayout, nullptr);
1972 }
1973
1974 void cleanupPipelineBuffers(GraphicsPipelineInfo& pipeline) {
1975 vkDestroyDescriptorSetLayout(device, pipeline.descriptorSetLayout, nullptr);
1976
1977 vkDestroyBuffer(device, pipeline.vertexBuffer, nullptr);
1978 vkFreeMemory(device, pipeline.vertexBufferMemory, nullptr);
1979 vkDestroyBuffer(device, pipeline.indexBuffer, nullptr);
1980 vkFreeMemory(device, pipeline.indexBufferMemory, nullptr);
1981 }
1982
1983 static VKAPI_ATTR VkBool32 VKAPI_CALL debugCallback(
1984 VkDebugUtilsMessageSeverityFlagBitsEXT messageSeverity,
1985 VkDebugUtilsMessageTypeFlagsEXT messageType,
1986 const VkDebugUtilsMessengerCallbackDataEXT* pCallbackData,
1987 void* pUserData) {
1988 cerr << "validation layer: " << pCallbackData->pMessage << endl;
1989
1990 return VK_FALSE;
1991 }
1992
1993 static vector<char> readFile(const string& filename) {
1994 ifstream file(filename, ios::ate | ios::binary);
1995
1996 if (!file.is_open()) {
1997 throw runtime_error("failed to open file!");
1998 }
1999
2000 size_t fileSize = (size_t) file.tellg();
2001 vector<char> buffer(fileSize);
2002
2003 file.seekg(0);
2004 file.read(buffer.data(), fileSize);
2005
2006 file.close();
2007
2008 return buffer;
2009 }
2010};
2011
2012/*** START OF REFACTORED CODE ***/
2013int main(int argc, char* argv[]) {
2014
2015#ifdef NDEBUG
2016 cout << "DEBUGGING IS OFF" << endl;
2017#else
2018 cout << "DEBUGGING IS ON" << endl;
2019#endif
2020
2021 cout << "Starting Vulkan game..." << endl;
2022
2023 VulkanGame game;
2024
2025 try {
2026 game.run();
2027 } catch (const exception& e) {
2028 cerr << e.what() << endl;
2029 return EXIT_FAILURE;
2030 }
2031
2032 cout << "Finished running the game" << endl;
2033
2034 return EXIT_SUCCESS;
2035}
2036/*** END OF REFACTORED CODE ***/
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