source: opengl-game/vulkan-ref.cpp@ 5b02676

feature/imgui-sdl points-test
Last change on this file since 5b02676 was 5b02676, checked in by Dmitry Portnoy <dmitry.portnoy@…>, 5 years ago

Make vulkangame and openglgame compile on OSX with the new GraphicsPipeline classes
  • Property mode set to 100644
File size: 85.1 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
64struct Vertex {
65 glm::vec3 pos;
66 glm::vec3 color;
67 glm::vec2 texCoord;
68};
69
70struct OverlayVertex {
71 glm::vec3 pos;
72 glm::vec2 texCoord;
73};
74/*** END OF REFACTORED CODE ***/
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 size_t vertexCapacity;
105 VkBuffer vertexBuffer;
106 VkDeviceMemory vertexBufferMemory;
107
108 size_t numIndices;
109 size_t indexCapacity;
110 VkBuffer indexBuffer;
111 VkDeviceMemory indexBufferMemory;
112};
113
114/*** START OF REFACTORED CODE ***/
115VkResult CreateDebugUtilsMessengerEXT(VkInstance instance,
116 const VkDebugUtilsMessengerCreateInfoEXT* pCreateInfo,
117 const VkAllocationCallbacks* pAllocator,
118 VkDebugUtilsMessengerEXT* pDebugMessenger) {
119 auto func = (PFN_vkCreateDebugUtilsMessengerEXT) vkGetInstanceProcAddr(instance, "vkCreateDebugUtilsMessengerEXT");
120
121 if (func != nullptr) {
122 return func(instance, pCreateInfo, pAllocator, pDebugMessenger);
123 } else {
124 return VK_ERROR_EXTENSION_NOT_PRESENT;
125 }
126}
127
128void DestroyDebugUtilsMessengerEXT(VkInstance instance,
129 VkDebugUtilsMessengerEXT debugMessenger,
130 const VkAllocationCallbacks* pAllocator) {
131 auto func = (PFN_vkDestroyDebugUtilsMessengerEXT) vkGetInstanceProcAddr(instance, "vkDestroyDebugUtilsMessengerEXT");
132
133 if (func != nullptr) {
134 func(instance, debugMessenger, pAllocator);
135 }
136}
137
138class VulkanGame {
139 public:
140 void run() {
141 if (initWindow() == RTWO_ERROR) {
142 return;
143 }
144 initVulkan();
145 mainLoop();
146 cleanup();
147 }
148
149 private:
150 GameGui* gui = new GameGui_SDL();
151
152 SDL_version sdlVersion;
153 SDL_Window* window = nullptr;
154 SDL_Renderer* gRenderer = nullptr;
155/*** END OF REFACTORED CODE ***/
156 SDL_Texture* uiOverlay = nullptr;
157
158 TTF_Font* gFont = nullptr;
159 SDL_Texture* uiText = nullptr;
160 SDL_Texture* uiImage = nullptr;
161
162/*** START OF REFACTORED CODE ***/
163 VkInstance instance;
164 VkDebugUtilsMessengerEXT debugMessenger;
165 VkSurfaceKHR surface;
166
167 VkPhysicalDevice physicalDevice = VK_NULL_HANDLE;
168 VkDevice device;
169
170 VkQueue graphicsQueue;
171 VkQueue presentQueue;
172
173 VkSwapchainKHR swapChain;
174 vector<VkImage> swapChainImages;
175 VkFormat swapChainImageFormat;
176/*** END OF REFACTORED CODE ***/
177 VkExtent2D swapChainExtent; // (This was taken out of vulkan-game for now and replaced with Viewport)
178/*** START OF REFACTORED CODE ***/
179 vector<VkImageView> swapChainImageViews;
180/*** END OF REFACTORED CODE ***/
181 vector<VkFramebuffer> swapChainFramebuffers;
182
183/*** START OF REFACTORED CODE ***/
184 VkRenderPass renderPass;
185
186 VkCommandPool commandPool;
187/*** END OF REFACTORED CODE ***/
188 vector<VkCommandBuffer> commandBuffers;
189
190 // The images and the sampler are used to store data for specific attributes. I probably
191 // want to keep them separate from the GraphicsPipelineInfo objects and start passing
192 // references to them once I start defining uniform and varying attributes in GraphicsPipelineInfo objects
193
194 VkImage depthImage;
195 VkDeviceMemory depthImageMemory;
196 VkImageView depthImageView;
197
198 VkImage textureImage;
199 VkDeviceMemory textureImageMemory;
200 VkImageView textureImageView;
201
202 VkImage overlayImage;
203 VkDeviceMemory overlayImageMemory;
204 VkImageView overlayImageView;
205
206 VkImage sdlOverlayImage;
207 VkDeviceMemory sdlOverlayImageMemory;
208 VkImageView sdlOverlayImageView;
209
210 VkSampler textureSampler;
211
212 // These are currently to store the MVP matrix
213 // I should figure out if it makes sense to use them for other uniforms in the future
214 // If not, I should rename them to better indicate their puprose.
215 // I should also decide if I can use these for all shaders, or if I need a separapte set of buffers for each one
216 vector<VkBuffer> uniformBuffers;
217 vector<VkDeviceMemory> uniformBuffersMemory;
218
219 VkDescriptorImageInfo sceneImageInfo;
220 VkDescriptorImageInfo overlayImageInfo;
221
222 vector<VkDescriptorBufferInfo> uniformBufferInfoList;
223
224 GraphicsPipelineInfo scenePipeline;
225 GraphicsPipelineInfo overlayPipeline;
226
227 vector<VkSemaphore> imageAvailableSemaphores;
228 vector<VkSemaphore> renderFinishedSemaphores;
229 vector<VkFence> inFlightFences;
230
231 size_t currentFrame = 0;
232
233 size_t numPlanes = 0; // temp
234
235/*** START OF REFACTORED CODE ***/
236 bool framebufferResized = false;
237
238 bool initWindow() {
239 if (gui->init() == RTWO_ERROR) {
240 cout << "UI library could not be initialized!" << endl;
241 cout << SDL_GetError() << endl;
242 return RTWO_ERROR;
243 }
244 cout << "GUI init succeeded" << endl;
245
246 window = (SDL_Window*) gui->createWindow("Vulkan Game", SCREEN_WIDTH, SCREEN_HEIGHT, true);
247 if (window == nullptr) {
248 cout << "Window could not be created!" << endl;
249 return RTWO_ERROR;
250 }
251
252 gRenderer = SDL_CreateRenderer(window, -1, SDL_RENDERER_ACCELERATED | SDL_RENDERER_PRESENTVSYNC);
253 if (gRenderer == nullptr) {
254 cout << "Renderer could not be created! SDL Error: " << SDL_GetError() << endl;
255 return RTWO_ERROR;
256 }
257/*** END OF REFACTORED CODE ***/
258
259 SDL_VERSION(&sdlVersion);
260
261 // In SDL 2.0.10 (currently, the latest), SDL_TEXTUREACCESS_TARGET is required to get a transparent overlay working
262 // However, the latest SDL version available through homebrew on Mac is 2.0.9, which requires SDL_TEXTUREACCESS_STREAMING
263 // 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
264 // until the homebrew recipe is updated
265 if (sdlVersion.major == 2 && sdlVersion.minor == 0 && sdlVersion.patch == 9) {
266 uiOverlay = SDL_CreateTexture(gRenderer, SDL_PIXELFORMAT_RGBA8888, SDL_TEXTUREACCESS_STREAMING, SCREEN_WIDTH, SCREEN_HEIGHT);
267 } else {
268 uiOverlay = SDL_CreateTexture(gRenderer, SDL_PIXELFORMAT_RGBA8888, SDL_TEXTUREACCESS_TARGET, SCREEN_WIDTH, SCREEN_HEIGHT);
269 }
270
271 if (uiOverlay == nullptr) {
272 cout << "Unable to create blank texture! SDL Error: " << SDL_GetError() << endl;
273 }
274 if (SDL_SetTextureBlendMode(uiOverlay, SDL_BLENDMODE_BLEND) != 0) {
275 cout << "Unable to set texture blend mode! SDL Error: " << SDL_GetError() << endl;
276 }
277
278 gFont = TTF_OpenFont("fonts/lazy.ttf", 28);
279 if (gFont == nullptr) {
280 cout << "Failed to load lazy font! SDL_ttf Error: " << TTF_GetError() << endl;
281 return RTWO_ERROR;
282 }
283
284 SDL_Color textColor = { 0, 0, 0 };
285
286 SDL_Surface* textSurface = TTF_RenderText_Solid(gFont, "Great sucess!", textColor);
287 if (textSurface == nullptr) {
288 cout << "Unable to render text surface! SDL_ttf Error: " << TTF_GetError() << endl;
289 return RTWO_ERROR;
290 }
291
292 uiText = SDL_CreateTextureFromSurface(gRenderer, textSurface);
293 if (uiText == nullptr) {
294 cout << "Unable to create texture from rendered text! SDL Error: " << SDL_GetError() << endl;
295 SDL_FreeSurface(textSurface);
296 return RTWO_ERROR;
297 }
298
299 SDL_FreeSurface(textSurface);
300
301 // TODO: Load a PNG instead
302 SDL_Surface* uiImageSurface = SDL_LoadBMP("assets/images/spaceship.bmp");
303 if (uiImageSurface == nullptr) {
304 cout << "Unable to load image " << "spaceship.bmp" << "! SDL Error: " << SDL_GetError() << endl;
305 return RTWO_ERROR;
306 }
307
308 uiImage = SDL_CreateTextureFromSurface(gRenderer, uiImageSurface);
309 if (uiImage == nullptr) {
310 cout << "Unable to create texture from BMP surface! SDL Error: " << SDL_GetError() << endl;
311 SDL_FreeSurface(uiImageSurface);
312 return RTWO_ERROR;
313 }
314
315 SDL_FreeSurface(uiImageSurface);
316
317 return RTWO_SUCCESS;
318 }
319
320/*** START OF REFACTORED CODE ***/
321 void initVulkan() {
322 createInstance();
323 setupDebugMessenger();
324 createSurface();
325 pickPhysicalDevice();
326 createLogicalDevice();
327 createSwapChain();
328 createImageViews();
329 createRenderPass();
330
331 createCommandPool();
332/*** END OF REFACTORED CODE ***/
333
334 // THIS SECTION IS WHERE TEXTURES ARE CREATED, MAYBE SPLIT IT OFF INTO A SEPARATE FUNCTION
335 // MAY WANT TO CREATE A STRUCT TO HOLD SIMILAR VARIABLES< LIKE THOSE FOR A TEXTURE
336
337 createImageResources("textures/texture.jpg", textureImage, textureImageMemory, textureImageView);
338 createImageResourcesFromSDLTexture(uiOverlay, sdlOverlayImage, sdlOverlayImageMemory, sdlOverlayImageView);
339 createTextureSampler();
340
341 sceneImageInfo = {};
342 sceneImageInfo.imageLayout = VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL;
343 sceneImageInfo.imageView = textureImageView;
344 sceneImageInfo.sampler = textureSampler;
345
346 overlayImageInfo = {};
347 overlayImageInfo.imageLayout = VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL;
348 overlayImageInfo.imageView = sdlOverlayImageView;
349 overlayImageInfo.sampler = textureSampler;
350
351 // SHADER-SPECIFIC STUFF STARTS HERE
352
353 vector<Vertex> sceneVertices = {
354 {{-0.5f, -0.5f, -0.5f}, {1.0f, 0.0f, 0.0f}, {0.0f, 1.0f}},
355 {{ 0.5f, -0.5f, -0.5f}, {0.0f, 1.0f, 0.0f}, {1.0f, 1.0f}},
356 {{ 0.5f, 0.5f, -0.5f}, {0.0f, 0.0f, 1.0f}, {1.0f, 0.0f}},
357 {{-0.5f, 0.5f, -0.5f}, {1.0f, 1.0f, 1.0f}, {0.0f, 0.0f}},
358
359 {{-0.5f, -0.5f, 0.0f}, {1.0f, 0.0f, 0.0f}, {0.0f, 1.0f}},
360 {{ 0.5f, -0.5f, 0.0f}, {0.0f, 1.0f, 0.0f}, {1.0f, 1.0f}},
361 {{ 0.5f, 0.5f, 0.0f}, {0.0f, 0.0f, 1.0f}, {1.0f, 0.0f}},
362 {{-0.5f, 0.5f, 0.0f}, {1.0f, 1.0f, 1.0f}, {0.0f, 0.0f}}
363 };
364 vector<uint16_t> sceneIndices = {
365 0, 1, 2, 2, 3, 0,
366 4, 5, 6, 6, 7, 4
367 };
368
369 initGraphicsPipelineInfo(scenePipeline,
370 sceneVertices.data(), sizeof(Vertex), sceneVertices.size(),
371 sceneIndices.data(), sizeof(uint16_t), sceneIndices.size());
372
373/*** START OF REFACTORED CODE ***/
374 addAttributeDescription(scenePipeline, VK_FORMAT_R32G32B32_SFLOAT, offset_of(&Vertex::pos));
375 addAttributeDescription(scenePipeline, VK_FORMAT_R32G32B32_SFLOAT, offset_of(&Vertex::color));
376 addAttributeDescription(scenePipeline, VK_FORMAT_R32G32_SFLOAT, offset_of(&Vertex::texCoord));
377/*** END OF REFACTORED CODE ***/
378
379 addDescriptorInfo(scenePipeline, VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, VK_SHADER_STAGE_VERTEX_BIT, &uniformBufferInfoList, nullptr);
380 addDescriptorInfo(scenePipeline, VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, VK_SHADER_STAGE_FRAGMENT_BIT, nullptr, &sceneImageInfo);
381
382 createDescriptorSetLayout(scenePipeline);
383
384 numPlanes = 2;
385
386 vector<OverlayVertex> overlayVertices = {
387 {{-1.0f, 1.0f, 0.0f}, {0.0f, 1.0f}},
388 {{ 1.0f, 1.0f, 0.0f}, {1.0f, 1.0f}},
389 {{ 1.0f, -1.0f, 0.0f}, {1.0f, 0.0f}},
390 {{-1.0f, -1.0f, 0.0f}, {0.0f, 0.0f}}
391 };
392 vector<uint16_t> overlayIndices = {
393 0, 1, 2, 2, 3, 0
394 };
395
396 initGraphicsPipelineInfo(overlayPipeline,
397 overlayVertices.data(), sizeof(OverlayVertex), overlayVertices.size(),
398 overlayIndices.data(), sizeof(uint16_t), overlayIndices.size());
399
400/*** START OF REFACTORED CODE ***/
401 addAttributeDescription(overlayPipeline, VK_FORMAT_R32G32B32_SFLOAT, offset_of(&OverlayVertex::pos));
402 addAttributeDescription(overlayPipeline, VK_FORMAT_R32G32_SFLOAT, offset_of(&OverlayVertex::texCoord));
403/*** END OF REFACTORED CODE ***/
404
405 addDescriptorInfo(overlayPipeline, VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, VK_SHADER_STAGE_FRAGMENT_BIT, nullptr, &overlayImageInfo);
406
407 createDescriptorSetLayout(overlayPipeline);
408
409 createBufferResources();
410
411 createSyncObjects();
412 }
413
414 void createInstance() {
415 if (enableValidationLayers && !checkValidationLayerSupport()) {
416 throw runtime_error("validation layers requested, but not available!");
417 }
418
419 VkApplicationInfo appInfo = {};
420 appInfo.sType = VK_STRUCTURE_TYPE_APPLICATION_INFO;
421 appInfo.pApplicationName = "Vulkan Game";
422 appInfo.applicationVersion = VK_MAKE_VERSION(1, 0, 0);
423 appInfo.pEngineName = "No Engine";
424 appInfo.engineVersion = VK_MAKE_VERSION(1, 0, 0);
425 appInfo.apiVersion = VK_API_VERSION_1_0;
426
427 VkInstanceCreateInfo createInfo = {};
428 createInfo.sType = VK_STRUCTURE_TYPE_INSTANCE_CREATE_INFO;
429 createInfo.pApplicationInfo = &appInfo;
430
431 vector<const char*> extensions = getRequiredExtensions();
432 createInfo.enabledExtensionCount = static_cast<uint32_t>(extensions.size());
433 createInfo.ppEnabledExtensionNames = extensions.data();
434
435 cout << endl << "Extensions:" << endl;
436 for (const char* extensionName : extensions) {
437 cout << extensionName << endl;
438 }
439 cout << endl;
440
441 VkDebugUtilsMessengerCreateInfoEXT debugCreateInfo;
442 if (enableValidationLayers) {
443 createInfo.enabledLayerCount = static_cast<uint32_t>(validationLayers.size());
444 createInfo.ppEnabledLayerNames = validationLayers.data();
445
446 populateDebugMessengerCreateInfo(debugCreateInfo);
447 createInfo.pNext = &debugCreateInfo;
448 } else {
449 createInfo.enabledLayerCount = 0;
450
451 createInfo.pNext = nullptr;
452 }
453
454 if (vkCreateInstance(&createInfo, nullptr, &instance) != VK_SUCCESS) {
455 throw runtime_error("failed to create instance!");
456 }
457 }
458
459 bool checkValidationLayerSupport() {
460 uint32_t layerCount;
461 vkEnumerateInstanceLayerProperties(&layerCount, nullptr);
462
463 vector<VkLayerProperties> availableLayers(layerCount);
464 vkEnumerateInstanceLayerProperties(&layerCount, availableLayers.data());
465
466 for (const char* layerName : validationLayers) {
467 bool layerFound = false;
468
469 for (const auto& layerProperties : availableLayers) {
470 if (strcmp(layerName, layerProperties.layerName) == 0) {
471 layerFound = true;
472 break;
473 }
474 }
475
476 if (!layerFound) {
477 return false;
478 }
479 }
480
481 return true;
482 }
483
484/*** START OF REFACTORED CODE ***/
485 vector<const char*> getRequiredExtensions() {
486 vector<const char*> extensions = gui->getRequiredExtensions();
487
488 if (enableValidationLayers) {
489 extensions.push_back(VK_EXT_DEBUG_UTILS_EXTENSION_NAME);
490 }
491
492 return extensions;
493 }
494
495 void setupDebugMessenger() {
496 if (!enableValidationLayers) return;
497
498 VkDebugUtilsMessengerCreateInfoEXT createInfo;
499 populateDebugMessengerCreateInfo(createInfo);
500
501 if (CreateDebugUtilsMessengerEXT(instance, &createInfo, nullptr, &debugMessenger) != VK_SUCCESS) {
502 throw runtime_error("failed to set up debug messenger!");
503 }
504 }
505
506 void populateDebugMessengerCreateInfo(VkDebugUtilsMessengerCreateInfoEXT& createInfo) {
507 createInfo = {};
508 createInfo.sType = VK_STRUCTURE_TYPE_DEBUG_UTILS_MESSENGER_CREATE_INFO_EXT;
509 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;
510 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;
511 createInfo.pfnUserCallback = debugCallback;
512 }
513
514 void createSurface() {
515 if (gui->createVulkanSurface(instance, &surface) == RTWO_ERROR) {
516 throw runtime_error("failed to create window surface!");
517 }
518 }
519
520 void pickPhysicalDevice() {
521 uint32_t deviceCount = 0;
522 vkEnumeratePhysicalDevices(instance, &deviceCount, nullptr);
523
524 if (deviceCount == 0) {
525 throw runtime_error("failed to find GPUs with Vulkan support!");
526 }
527
528 vector<VkPhysicalDevice> devices(deviceCount);
529 vkEnumeratePhysicalDevices(instance, &deviceCount, devices.data());
530
531 cout << endl << "Graphics cards:" << endl;
532 for (const VkPhysicalDevice& device : devices) {
533 if (isDeviceSuitable(device)) {
534 physicalDevice = device;
535 break;
536 }
537 }
538 cout << endl;
539
540 if (physicalDevice == VK_NULL_HANDLE) {
541 throw runtime_error("failed to find a suitable GPU!");
542 }
543 }
544
545 bool isDeviceSuitable(VkPhysicalDevice device) {
546 VkPhysicalDeviceProperties deviceProperties;
547 vkGetPhysicalDeviceProperties(device, &deviceProperties);
548
549 cout << "Device: " << deviceProperties.deviceName << endl;
550
551 QueueFamilyIndices indices = findQueueFamilies(device);
552 bool extensionsSupported = checkDeviceExtensionSupport(device);
553 bool swapChainAdequate = false;
554
555 if (extensionsSupported) {
556 SwapChainSupportDetails swapChainSupport = querySwapChainSupport(device);
557 swapChainAdequate = !swapChainSupport.formats.empty() && !swapChainSupport.presentModes.empty();
558 }
559
560 VkPhysicalDeviceFeatures supportedFeatures;
561 vkGetPhysicalDeviceFeatures(device, &supportedFeatures);
562
563 return indices.isComplete() && extensionsSupported && swapChainAdequate && supportedFeatures.samplerAnisotropy;
564 }
565
566 bool checkDeviceExtensionSupport(VkPhysicalDevice device) {
567 uint32_t extensionCount;
568 vkEnumerateDeviceExtensionProperties(device, nullptr, &extensionCount, nullptr);
569
570 vector<VkExtensionProperties> availableExtensions(extensionCount);
571 vkEnumerateDeviceExtensionProperties(device, nullptr, &extensionCount, availableExtensions.data());
572
573 set<string> requiredExtensions(deviceExtensions.begin(), deviceExtensions.end());
574
575 for (const auto& extension : availableExtensions) {
576 requiredExtensions.erase(extension.extensionName);
577 }
578
579 return requiredExtensions.empty();
580 }
581
582 void createLogicalDevice() {
583 QueueFamilyIndices indices = findQueueFamilies(physicalDevice);
584
585 vector<VkDeviceQueueCreateInfo> queueCreateInfos;
586 set<uint32_t> uniqueQueueFamilies = {indices.graphicsFamily.value(), indices.presentFamily.value()};
587
588 float queuePriority = 1.0f;
589 for (uint32_t queueFamily : uniqueQueueFamilies) {
590 VkDeviceQueueCreateInfo queueCreateInfo = {};
591 queueCreateInfo.sType = VK_STRUCTURE_TYPE_DEVICE_QUEUE_CREATE_INFO;
592 queueCreateInfo.queueFamilyIndex = queueFamily;
593 queueCreateInfo.queueCount = 1;
594 queueCreateInfo.pQueuePriorities = &queuePriority;
595
596 queueCreateInfos.push_back(queueCreateInfo);
597 }
598
599 VkPhysicalDeviceFeatures deviceFeatures = {};
600 deviceFeatures.samplerAnisotropy = VK_TRUE;
601
602 VkDeviceCreateInfo createInfo = {};
603 createInfo.sType = VK_STRUCTURE_TYPE_DEVICE_CREATE_INFO;
604 createInfo.queueCreateInfoCount = static_cast<uint32_t>(queueCreateInfos.size());
605 createInfo.pQueueCreateInfos = queueCreateInfos.data();
606
607 createInfo.pEnabledFeatures = &deviceFeatures;
608
609 createInfo.enabledExtensionCount = static_cast<uint32_t>(deviceExtensions.size());
610 createInfo.ppEnabledExtensionNames = deviceExtensions.data();
611
612 // These fields are ignored by up-to-date Vulkan implementations,
613 // but it's a good idea to set them for backwards compatibility
614 if (enableValidationLayers) {
615 createInfo.enabledLayerCount = static_cast<uint32_t>(validationLayers.size());
616 createInfo.ppEnabledLayerNames = validationLayers.data();
617 } else {
618 createInfo.enabledLayerCount = 0;
619 }
620
621 if (vkCreateDevice(physicalDevice, &createInfo, nullptr, &device) != VK_SUCCESS) {
622 throw runtime_error("failed to create logical device!");
623 }
624
625 vkGetDeviceQueue(device, indices.graphicsFamily.value(), 0, &graphicsQueue);
626 vkGetDeviceQueue(device, indices.presentFamily.value(), 0, &presentQueue);
627 }
628
629 void createSwapChain() {
630 SwapChainSupportDetails swapChainSupport = querySwapChainSupport(physicalDevice);
631
632 VkSurfaceFormatKHR surfaceFormat = chooseSwapSurfaceFormat(swapChainSupport.formats);
633 VkPresentModeKHR presentMode = chooseSwapPresentMode(swapChainSupport.presentModes);
634 VkExtent2D extent = chooseSwapExtent(swapChainSupport.capabilities);
635
636 uint32_t imageCount = swapChainSupport.capabilities.minImageCount + 1;
637 if (swapChainSupport.capabilities.maxImageCount > 0 && imageCount > swapChainSupport.capabilities.maxImageCount) {
638 imageCount = swapChainSupport.capabilities.maxImageCount;
639 }
640
641 VkSwapchainCreateInfoKHR createInfo = {};
642 createInfo.sType = VK_STRUCTURE_TYPE_SWAPCHAIN_CREATE_INFO_KHR;
643 createInfo.surface = surface;
644 createInfo.minImageCount = imageCount;
645 createInfo.imageFormat = surfaceFormat.format;
646 createInfo.imageColorSpace = surfaceFormat.colorSpace;
647 createInfo.imageExtent = extent;
648 createInfo.imageArrayLayers = 1;
649 createInfo.imageUsage = VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT;
650
651 QueueFamilyIndices indices = findQueueFamilies(physicalDevice);
652 uint32_t queueFamilyIndices[] = {indices.graphicsFamily.value(), indices.presentFamily.value()};
653
654 if (indices.graphicsFamily != indices.presentFamily) {
655 createInfo.imageSharingMode = VK_SHARING_MODE_CONCURRENT;
656 createInfo.queueFamilyIndexCount = 2;
657 createInfo.pQueueFamilyIndices = queueFamilyIndices;
658 } else {
659 createInfo.imageSharingMode = VK_SHARING_MODE_EXCLUSIVE;
660 createInfo.queueFamilyIndexCount = 0;
661 createInfo.pQueueFamilyIndices = nullptr;
662 }
663
664 createInfo.preTransform = swapChainSupport.capabilities.currentTransform;
665 createInfo.compositeAlpha = VK_COMPOSITE_ALPHA_OPAQUE_BIT_KHR;
666 createInfo.presentMode = presentMode;
667 createInfo.clipped = VK_TRUE;
668 createInfo.oldSwapchain = VK_NULL_HANDLE;
669
670 if (vkCreateSwapchainKHR(device, &createInfo, nullptr, &swapChain) != VK_SUCCESS) {
671 throw runtime_error("failed to create swap chain!");
672 }
673
674 vkGetSwapchainImagesKHR(device, swapChain, &imageCount, nullptr);
675 swapChainImages.resize(imageCount);
676 vkGetSwapchainImagesKHR(device, swapChain, &imageCount, swapChainImages.data());
677
678 swapChainImageFormat = surfaceFormat.format;
679 swapChainExtent = extent;
680 }
681
682 SwapChainSupportDetails querySwapChainSupport(VkPhysicalDevice device) {
683 SwapChainSupportDetails details;
684
685 vkGetPhysicalDeviceSurfaceCapabilitiesKHR(device, surface, &details.capabilities);
686
687 uint32_t formatCount;
688 vkGetPhysicalDeviceSurfaceFormatsKHR(device, surface, &formatCount, nullptr);
689
690 if (formatCount != 0) {
691 details.formats.resize(formatCount);
692 vkGetPhysicalDeviceSurfaceFormatsKHR(device, surface, &formatCount, details.formats.data());
693 }
694
695 uint32_t presentModeCount;
696 vkGetPhysicalDeviceSurfacePresentModesKHR(device, surface, &presentModeCount, nullptr);
697
698 if (presentModeCount != 0) {
699 details.presentModes.resize(presentModeCount);
700 vkGetPhysicalDeviceSurfacePresentModesKHR(device, surface, &presentModeCount, details.presentModes.data());
701 }
702
703 return details;
704 }
705
706 VkSurfaceFormatKHR chooseSwapSurfaceFormat(const vector<VkSurfaceFormatKHR>& availableFormats) {
707 for (const auto& availableFormat : availableFormats) {
708 if (availableFormat.format == VK_FORMAT_B8G8R8A8_UNORM && availableFormat.colorSpace == VK_COLOR_SPACE_SRGB_NONLINEAR_KHR) {
709 return availableFormat;
710 }
711 }
712
713 return availableFormats[0];
714 }
715
716 VkPresentModeKHR chooseSwapPresentMode(const vector<VkPresentModeKHR>& availablePresentModes) {
717 VkPresentModeKHR bestMode = VK_PRESENT_MODE_FIFO_KHR;
718
719 for (const auto& availablePresentMode : availablePresentModes) {
720 if (availablePresentMode == VK_PRESENT_MODE_MAILBOX_KHR) {
721 return availablePresentMode;
722 }
723 else if (availablePresentMode == VK_PRESENT_MODE_IMMEDIATE_KHR) {
724 bestMode = availablePresentMode;
725 }
726 }
727
728 return bestMode;
729 }
730
731 VkExtent2D chooseSwapExtent(const VkSurfaceCapabilitiesKHR& capabilities) {
732 if (capabilities.currentExtent.width != numeric_limits<uint32_t>::max()) {
733 return capabilities.currentExtent;
734 } else {
735 VkExtent2D actualExtent = {
736 static_cast<uint32_t>(gui->getWindowWidth()),
737 static_cast<uint32_t>(gui->getWindowHeight())
738 };
739
740 actualExtent.width = std::max(capabilities.minImageExtent.width, std::min(capabilities.maxImageExtent.width, actualExtent.width));
741 actualExtent.height = std::max(capabilities.minImageExtent.height, std::min(capabilities.maxImageExtent.height, actualExtent.height));
742
743 return actualExtent;
744 }
745 }
746
747 void createImageViews() {
748 swapChainImageViews.resize(swapChainImages.size());
749
750 for (size_t i = 0; i < swapChainImages.size(); i++) {
751 swapChainImageViews[i] = createImageView(swapChainImages[i], swapChainImageFormat, VK_IMAGE_ASPECT_COLOR_BIT);
752 }
753 }
754
755 void createRenderPass() {
756 VkAttachmentDescription colorAttachment = {};
757 colorAttachment.format = swapChainImageFormat;
758 colorAttachment.samples = VK_SAMPLE_COUNT_1_BIT;
759 colorAttachment.loadOp = VK_ATTACHMENT_LOAD_OP_CLEAR;
760 colorAttachment.storeOp = VK_ATTACHMENT_STORE_OP_STORE;
761 colorAttachment.stencilLoadOp = VK_ATTACHMENT_LOAD_OP_DONT_CARE;
762 colorAttachment.stencilStoreOp = VK_ATTACHMENT_STORE_OP_DONT_CARE;
763 colorAttachment.initialLayout = VK_IMAGE_LAYOUT_UNDEFINED;
764 colorAttachment.finalLayout = VK_IMAGE_LAYOUT_PRESENT_SRC_KHR;
765
766 VkAttachmentReference colorAttachmentRef = {};
767 colorAttachmentRef.attachment = 0;
768 colorAttachmentRef.layout = VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL;
769
770 VkAttachmentDescription depthAttachment = {};
771 depthAttachment.format = findDepthFormat();
772 depthAttachment.samples = VK_SAMPLE_COUNT_1_BIT;
773 depthAttachment.loadOp = VK_ATTACHMENT_LOAD_OP_CLEAR;
774 depthAttachment.storeOp = VK_ATTACHMENT_STORE_OP_DONT_CARE;
775 depthAttachment.stencilLoadOp = VK_ATTACHMENT_LOAD_OP_DONT_CARE;
776 depthAttachment.stencilStoreOp = VK_ATTACHMENT_STORE_OP_DONT_CARE;
777 depthAttachment.initialLayout = VK_IMAGE_LAYOUT_UNDEFINED;
778 depthAttachment.finalLayout = VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL;
779
780 VkAttachmentReference depthAttachmentRef = {};
781 depthAttachmentRef.attachment = 1;
782 depthAttachmentRef.layout = VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL;
783
784 VkSubpassDescription subpass = {};
785 subpass.pipelineBindPoint = VK_PIPELINE_BIND_POINT_GRAPHICS;
786 subpass.colorAttachmentCount = 1;
787 subpass.pColorAttachments = &colorAttachmentRef;
788 subpass.pDepthStencilAttachment = &depthAttachmentRef;
789
790 VkSubpassDependency dependency = {};
791 dependency.srcSubpass = VK_SUBPASS_EXTERNAL;
792 dependency.dstSubpass = 0;
793 dependency.srcStageMask = VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT;
794 dependency.srcAccessMask = 0;
795 dependency.dstStageMask = VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT;
796 dependency.dstAccessMask = VK_ACCESS_COLOR_ATTACHMENT_READ_BIT | VK_ACCESS_COLOR_ATTACHMENT_WRITE_BIT;
797
798 array<VkAttachmentDescription, 2> attachments = { colorAttachment, depthAttachment };
799 VkRenderPassCreateInfo renderPassInfo = {};
800 renderPassInfo.sType = VK_STRUCTURE_TYPE_RENDER_PASS_CREATE_INFO;
801 renderPassInfo.attachmentCount = static_cast<uint32_t>(attachments.size());
802 renderPassInfo.pAttachments = attachments.data();
803 renderPassInfo.subpassCount = 1;
804 renderPassInfo.pSubpasses = &subpass;
805 renderPassInfo.dependencyCount = 1;
806 renderPassInfo.pDependencies = &dependency;
807
808 if (vkCreateRenderPass(device, &renderPassInfo, nullptr, &renderPass) != VK_SUCCESS) {
809 throw runtime_error("failed to create render pass!");
810 }
811 }
812/*** END OF REFACTORED CODE ***/
813
814 void initGraphicsPipelineInfo(GraphicsPipelineInfo& info,
815 const void* vertexData, int vertexSize, size_t numVertices,
816 const void* indexData, int indexSize, size_t numIndices) {
817/*** START OF REFACTORED CODE ***/
818 // Since there is only one array of vertex data, we use binding = 0
819 // I'll probably do that for the foreseeable future
820 // I can calculate the stride myself given info about all the varying attributes
821
822 info.bindingDescription.binding = 0;
823 info.bindingDescription.stride = vertexSize;
824 info.bindingDescription.inputRate = VK_VERTEX_INPUT_RATE_VERTEX;
825/*** END OF REFACTORED CODE ***/
826
827 info.numVertices = numVertices;
828 info.vertexCapacity = numVertices * 2;
829 createVertexBuffer(info, vertexData, vertexSize);
830
831 info.numIndices = numIndices;
832 info.indexCapacity = numIndices * 2;
833 createIndexBuffer(info, indexData, indexSize);
834 }
835
836 void addAttributeDescription(GraphicsPipelineInfo& info, VkFormat format, size_t offset) {
837 VkVertexInputAttributeDescription attributeDesc = {};
838
839 attributeDesc.binding = 0;
840 attributeDesc.location = info.attributeDescriptions.size();
841 attributeDesc.format = format;
842 attributeDesc.offset = offset;
843
844 info.attributeDescriptions.push_back(attributeDesc);
845 }
846
847 void addDescriptorInfo(GraphicsPipelineInfo& info, VkDescriptorType type, VkShaderStageFlags stageFlags, vector<VkDescriptorBufferInfo>* bufferData, VkDescriptorImageInfo* imageData) {
848 info.descriptorInfoList.push_back({ type, stageFlags, bufferData, imageData });
849 }
850
851 void createDescriptorSetLayout(GraphicsPipelineInfo& info) {
852 vector<VkDescriptorSetLayoutBinding> bindings(info.descriptorInfoList.size());
853
854 for (size_t i = 0; i < bindings.size(); i++) {
855 bindings[i].binding = i;
856 bindings[i].descriptorCount = 1;
857 bindings[i].descriptorType = info.descriptorInfoList[i].type;
858 bindings[i].stageFlags = info.descriptorInfoList[i].stageFlags;
859 bindings[i].pImmutableSamplers = nullptr;
860 }
861
862 VkDescriptorSetLayoutCreateInfo layoutInfo = {};
863 layoutInfo.sType = VK_STRUCTURE_TYPE_DESCRIPTOR_SET_LAYOUT_CREATE_INFO;
864 layoutInfo.bindingCount = static_cast<uint32_t>(bindings.size());
865 layoutInfo.pBindings = bindings.data();
866
867 if (vkCreateDescriptorSetLayout(device, &layoutInfo, nullptr, &info.descriptorSetLayout) != VK_SUCCESS) {
868 throw runtime_error("failed to create descriptor set layout!");
869 }
870 }
871
872 void createGraphicsPipeline(string vertShaderFile, string fragShaderFile, GraphicsPipelineInfo& info) {
873/*** START OF REFACTORED CODE ***/
874 vector<char> vertShaderCode = readFile(vertShaderFile);
875 vector<char> fragShaderCode = readFile(fragShaderFile);
876
877 VkShaderModule vertShaderModule = createShaderModule(vertShaderCode);
878 VkShaderModule fragShaderModule = createShaderModule(fragShaderCode);
879
880 VkPipelineShaderStageCreateInfo vertShaderStageInfo = {};
881 vertShaderStageInfo.sType = VK_STRUCTURE_TYPE_PIPELINE_SHADER_STAGE_CREATE_INFO;
882 vertShaderStageInfo.stage = VK_SHADER_STAGE_VERTEX_BIT;
883 vertShaderStageInfo.module = vertShaderModule;
884 vertShaderStageInfo.pName = "main";
885
886 VkPipelineShaderStageCreateInfo fragShaderStageInfo = {};
887 fragShaderStageInfo.sType = VK_STRUCTURE_TYPE_PIPELINE_SHADER_STAGE_CREATE_INFO;
888 fragShaderStageInfo.stage = VK_SHADER_STAGE_FRAGMENT_BIT;
889 fragShaderStageInfo.module = fragShaderModule;
890 fragShaderStageInfo.pName = "main";
891
892 VkPipelineShaderStageCreateInfo shaderStages[] = { vertShaderStageInfo, fragShaderStageInfo };
893
894 VkPipelineVertexInputStateCreateInfo vertexInputInfo = {};
895 vertexInputInfo.sType = VK_STRUCTURE_TYPE_PIPELINE_VERTEX_INPUT_STATE_CREATE_INFO;
896
897 vertexInputInfo.vertexBindingDescriptionCount = 1;
898 vertexInputInfo.vertexAttributeDescriptionCount = static_cast<uint32_t>(info.attributeDescriptions.size());
899 vertexInputInfo.pVertexBindingDescriptions = &info.bindingDescription;
900 vertexInputInfo.pVertexAttributeDescriptions = info.attributeDescriptions.data();
901
902 VkPipelineInputAssemblyStateCreateInfo inputAssembly = {};
903 inputAssembly.sType = VK_STRUCTURE_TYPE_PIPELINE_INPUT_ASSEMBLY_STATE_CREATE_INFO;
904 inputAssembly.topology = VK_PRIMITIVE_TOPOLOGY_TRIANGLE_LIST;
905 inputAssembly.primitiveRestartEnable = VK_FALSE;
906
907 VkViewport viewport = {};
908 viewport.x = 0.0f;
909 viewport.y = 0.0f;
910 viewport.width = (float) swapChainExtent.width;
911 viewport.height = (float) swapChainExtent.height;
912 viewport.minDepth = 0.0f;
913 viewport.maxDepth = 1.0f;
914
915 VkRect2D scissor = {};
916 scissor.offset = { 0, 0 };
917 scissor.extent = swapChainExtent;
918
919 VkPipelineViewportStateCreateInfo viewportState = {};
920 viewportState.sType = VK_STRUCTURE_TYPE_PIPELINE_VIEWPORT_STATE_CREATE_INFO;
921 viewportState.viewportCount = 1;
922 viewportState.pViewports = &viewport;
923 viewportState.scissorCount = 1;
924 viewportState.pScissors = &scissor;
925
926 VkPipelineRasterizationStateCreateInfo rasterizer = {};
927 rasterizer.sType = VK_STRUCTURE_TYPE_PIPELINE_RASTERIZATION_STATE_CREATE_INFO;
928 rasterizer.depthClampEnable = VK_FALSE;
929 rasterizer.rasterizerDiscardEnable = VK_FALSE;
930 rasterizer.polygonMode = VK_POLYGON_MODE_FILL;
931 rasterizer.lineWidth = 1.0f;
932 rasterizer.cullMode = VK_CULL_MODE_BACK_BIT;
933 rasterizer.frontFace = VK_FRONT_FACE_COUNTER_CLOCKWISE;
934 rasterizer.depthBiasEnable = VK_FALSE;
935
936 VkPipelineMultisampleStateCreateInfo multisampling = {};
937 multisampling.sType = VK_STRUCTURE_TYPE_PIPELINE_MULTISAMPLE_STATE_CREATE_INFO;
938 multisampling.sampleShadingEnable = VK_FALSE;
939 multisampling.rasterizationSamples = VK_SAMPLE_COUNT_1_BIT;
940
941 VkPipelineColorBlendAttachmentState colorBlendAttachment = {};
942 colorBlendAttachment.colorWriteMask = VK_COLOR_COMPONENT_R_BIT | VK_COLOR_COMPONENT_G_BIT | VK_COLOR_COMPONENT_B_BIT | VK_COLOR_COMPONENT_A_BIT;
943 colorBlendAttachment.blendEnable = VK_TRUE;
944 colorBlendAttachment.colorBlendOp = VK_BLEND_OP_ADD;
945 colorBlendAttachment.srcColorBlendFactor = VK_BLEND_FACTOR_SRC_ALPHA;
946 colorBlendAttachment.dstColorBlendFactor = VK_BLEND_FACTOR_ONE_MINUS_SRC_ALPHA;
947 colorBlendAttachment.alphaBlendOp = VK_BLEND_OP_ADD;
948 colorBlendAttachment.srcAlphaBlendFactor = VK_BLEND_FACTOR_SRC_ALPHA;
949 colorBlendAttachment.dstAlphaBlendFactor = VK_BLEND_FACTOR_ONE_MINUS_SRC_ALPHA;
950
951 VkPipelineColorBlendStateCreateInfo colorBlending = {};
952 colorBlending.sType = VK_STRUCTURE_TYPE_PIPELINE_COLOR_BLEND_STATE_CREATE_INFO;
953 colorBlending.logicOpEnable = VK_FALSE;
954 colorBlending.logicOp = VK_LOGIC_OP_COPY;
955 colorBlending.attachmentCount = 1;
956 colorBlending.pAttachments = &colorBlendAttachment;
957 colorBlending.blendConstants[0] = 0.0f;
958 colorBlending.blendConstants[1] = 0.0f;
959 colorBlending.blendConstants[2] = 0.0f;
960 colorBlending.blendConstants[3] = 0.0f;
961
962 VkPipelineDepthStencilStateCreateInfo depthStencil = {};
963 depthStencil.sType = VK_STRUCTURE_TYPE_PIPELINE_DEPTH_STENCIL_STATE_CREATE_INFO;
964 depthStencil.depthTestEnable = VK_TRUE;
965 depthStencil.depthWriteEnable = VK_TRUE;
966 depthStencil.depthCompareOp = VK_COMPARE_OP_LESS;
967 depthStencil.depthBoundsTestEnable = VK_FALSE;
968 depthStencil.minDepthBounds = 0.0f;
969 depthStencil.maxDepthBounds = 1.0f;
970 depthStencil.stencilTestEnable = VK_FALSE;
971 depthStencil.front = {};
972 depthStencil.back = {};
973
974 VkPipelineLayoutCreateInfo pipelineLayoutInfo = {};
975 pipelineLayoutInfo.sType = VK_STRUCTURE_TYPE_PIPELINE_LAYOUT_CREATE_INFO;
976 pipelineLayoutInfo.setLayoutCount = 1;
977/*** END OF REFACTORED CODE ***/
978 pipelineLayoutInfo.pSetLayouts = &info.descriptorSetLayout;
979 pipelineLayoutInfo.pushConstantRangeCount = 0;
980
981 if (vkCreatePipelineLayout(device, &pipelineLayoutInfo, nullptr, &info.pipelineLayout) != VK_SUCCESS) {
982 throw runtime_error("failed to create pipeline layout!");
983 }
984
985 VkGraphicsPipelineCreateInfo pipelineInfo = {};
986 pipelineInfo.sType = VK_STRUCTURE_TYPE_GRAPHICS_PIPELINE_CREATE_INFO;
987 pipelineInfo.stageCount = 2;
988 pipelineInfo.pStages = shaderStages;
989 pipelineInfo.pVertexInputState = &vertexInputInfo;
990 pipelineInfo.pInputAssemblyState = &inputAssembly;
991 pipelineInfo.pViewportState = &viewportState;
992 pipelineInfo.pRasterizationState = &rasterizer;
993 pipelineInfo.pMultisampleState = &multisampling;
994 pipelineInfo.pDepthStencilState = &depthStencil;
995 pipelineInfo.pColorBlendState = &colorBlending;
996 pipelineInfo.pDynamicState = nullptr;
997 pipelineInfo.layout = info.pipelineLayout;
998 pipelineInfo.renderPass = renderPass;
999 pipelineInfo.subpass = 0;
1000 pipelineInfo.basePipelineHandle = VK_NULL_HANDLE;
1001 pipelineInfo.basePipelineIndex = -1;
1002
1003 if (vkCreateGraphicsPipelines(device, VK_NULL_HANDLE, 1, &pipelineInfo, nullptr, &info.pipeline) != VK_SUCCESS) {
1004 throw runtime_error("failed to create graphics pipeline!");
1005 }
1006
1007/*** START OF REFACTORED CODE ***/
1008 vkDestroyShaderModule(device, vertShaderModule, nullptr);
1009 vkDestroyShaderModule(device, fragShaderModule, nullptr);
1010/*** END OF REFACTORED CODE ***/
1011 }
1012
1013 VkShaderModule createShaderModule(const vector<char>& code) {
1014 VkShaderModuleCreateInfo createInfo = {};
1015 createInfo.sType = VK_STRUCTURE_TYPE_SHADER_MODULE_CREATE_INFO;
1016 createInfo.codeSize = code.size();
1017 createInfo.pCode = reinterpret_cast<const uint32_t*>(code.data());
1018
1019 VkShaderModule shaderModule;
1020 if (vkCreateShaderModule(device, &createInfo, nullptr, &shaderModule) != VK_SUCCESS) {
1021 throw runtime_error("failed to create shader module!");
1022 }
1023
1024 return shaderModule;
1025 }
1026
1027 void createFramebuffers() {
1028 swapChainFramebuffers.resize(swapChainImageViews.size());
1029
1030 for (size_t i = 0; i < swapChainImageViews.size(); i++) {
1031 array <VkImageView, 2> attachments = {
1032 swapChainImageViews[i],
1033 depthImageView
1034 };
1035
1036 VkFramebufferCreateInfo framebufferInfo = {};
1037 framebufferInfo.sType = VK_STRUCTURE_TYPE_FRAMEBUFFER_CREATE_INFO;
1038 framebufferInfo.renderPass = renderPass;
1039 framebufferInfo.attachmentCount = static_cast<uint32_t>(attachments.size());
1040 framebufferInfo.pAttachments = attachments.data();
1041 framebufferInfo.width = swapChainExtent.width;
1042 framebufferInfo.height = swapChainExtent.height;
1043 framebufferInfo.layers = 1;
1044
1045 if (vkCreateFramebuffer(device, &framebufferInfo, nullptr, &swapChainFramebuffers[i]) != VK_SUCCESS) {
1046 throw runtime_error("failed to create framebuffer!");
1047 }
1048 }
1049 }
1050
1051/*** START OF REFACTORED CODE ***/
1052 void createCommandPool() {
1053 QueueFamilyIndices queueFamilyIndices = findQueueFamilies(physicalDevice);
1054
1055 VkCommandPoolCreateInfo poolInfo = {};
1056 poolInfo.sType = VK_STRUCTURE_TYPE_COMMAND_POOL_CREATE_INFO;
1057 poolInfo.queueFamilyIndex = queueFamilyIndices.graphicsFamily.value();
1058 poolInfo.flags = 0;
1059
1060 if (vkCreateCommandPool(device, &poolInfo, nullptr, &commandPool) != VK_SUCCESS) {
1061 throw runtime_error("failed to create graphics command pool!");
1062 }
1063 }
1064
1065 QueueFamilyIndices findQueueFamilies(VkPhysicalDevice device) {
1066 QueueFamilyIndices indices;
1067
1068 uint32_t queueFamilyCount = 0;
1069 vkGetPhysicalDeviceQueueFamilyProperties(device, &queueFamilyCount, nullptr);
1070
1071 vector<VkQueueFamilyProperties> queueFamilies(queueFamilyCount);
1072 vkGetPhysicalDeviceQueueFamilyProperties(device, &queueFamilyCount, queueFamilies.data());
1073
1074 int i = 0;
1075 for (const auto& queueFamily : queueFamilies) {
1076 if (queueFamily.queueCount > 0 && queueFamily.queueFlags & VK_QUEUE_GRAPHICS_BIT) {
1077 indices.graphicsFamily = i;
1078 }
1079
1080 VkBool32 presentSupport = false;
1081 vkGetPhysicalDeviceSurfaceSupportKHR(device, i, surface, &presentSupport);
1082
1083 if (queueFamily.queueCount > 0 && presentSupport) {
1084 indices.presentFamily = i;
1085 }
1086
1087 if (indices.isComplete()) {
1088 break;
1089 }
1090
1091 i++;
1092 }
1093
1094 return indices;
1095 }
1096/*** END OF REFACTORED CODE ***/
1097
1098 void createDepthResources() {
1099 VkFormat depthFormat = findDepthFormat();
1100
1101 createImage(swapChainExtent.width, swapChainExtent.height, depthFormat, VK_IMAGE_TILING_OPTIMAL,
1102 VK_IMAGE_USAGE_DEPTH_STENCIL_ATTACHMENT_BIT, VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT, depthImage, depthImageMemory);
1103 depthImageView = createImageView(depthImage, depthFormat, VK_IMAGE_ASPECT_DEPTH_BIT);
1104
1105 transitionImageLayout(depthImage, depthFormat, VK_IMAGE_LAYOUT_UNDEFINED, VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL);
1106 }
1107
1108/*** START OF REFACTORED CODE ***/
1109 VkFormat findDepthFormat() {
1110 return findSupportedFormat(
1111 { VK_FORMAT_D32_SFLOAT, VK_FORMAT_D32_SFLOAT_S8_UINT, VK_FORMAT_D24_UNORM_S8_UINT },
1112 VK_IMAGE_TILING_OPTIMAL,
1113 VK_FORMAT_FEATURE_DEPTH_STENCIL_ATTACHMENT_BIT
1114 );
1115 }
1116
1117 VkFormat findSupportedFormat(const vector<VkFormat>& candidates, VkImageTiling tiling,
1118 VkFormatFeatureFlags features) {
1119 for (VkFormat format : candidates) {
1120 VkFormatProperties props;
1121 vkGetPhysicalDeviceFormatProperties(physicalDevice, format, &props);
1122
1123 if (tiling == VK_IMAGE_TILING_LINEAR &&
1124 (props.linearTilingFeatures & features) == features) {
1125 return format;
1126 } else if (tiling == VK_IMAGE_TILING_OPTIMAL &&
1127 (props.optimalTilingFeatures & features) == features) {
1128 return format;
1129 }
1130 }
1131
1132 throw runtime_error("failed to find supported format!");
1133 }
1134/*** END OF REFACTORED CODE ***/
1135
1136 bool hasStencilComponent(VkFormat format) {
1137 return format == VK_FORMAT_D32_SFLOAT_S8_UINT || format == VK_FORMAT_D24_UNORM_S8_UINT;
1138 }
1139
1140 void createImageResources(string filename, VkImage& image, VkDeviceMemory& imageMemory, VkImageView& view) {
1141 int texWidth, texHeight, texChannels;
1142
1143 stbi_uc* pixels = stbi_load(filename.c_str(), &texWidth, &texHeight, &texChannels, STBI_rgb_alpha);
1144 VkDeviceSize imageSize = texWidth * texHeight * 4;
1145
1146 if (!pixels) {
1147 throw runtime_error("failed to load texture image!");
1148 }
1149
1150 VkBuffer stagingBuffer;
1151 VkDeviceMemory stagingBufferMemory;
1152
1153 createBuffer(imageSize, VK_BUFFER_USAGE_TRANSFER_SRC_BIT,
1154 VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | VK_MEMORY_PROPERTY_HOST_COHERENT_BIT,
1155 stagingBuffer, stagingBufferMemory);
1156
1157 void* data;
1158
1159 vkMapMemory(device, stagingBufferMemory, 0, imageSize, 0, &data);
1160 memcpy(data, pixels, static_cast<size_t>(imageSize));
1161 vkUnmapMemory(device, stagingBufferMemory);
1162
1163 stbi_image_free(pixels);
1164
1165 createImage(texWidth, texHeight, VK_FORMAT_R8G8B8A8_UNORM, VK_IMAGE_TILING_OPTIMAL,
1166 VK_IMAGE_USAGE_TRANSFER_DST_BIT | VK_IMAGE_USAGE_SAMPLED_BIT,
1167 VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT, image, imageMemory);
1168
1169 transitionImageLayout(image, VK_FORMAT_R8G8B8A8_UNORM, VK_IMAGE_LAYOUT_UNDEFINED, VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL);
1170 copyBufferToImage(stagingBuffer, image, static_cast<uint32_t>(texWidth), static_cast<uint32_t>(texHeight));
1171 transitionImageLayout(image, VK_FORMAT_R8G8B8A8_UNORM, VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL, VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL);
1172
1173 vkDestroyBuffer(device, stagingBuffer, nullptr);
1174 vkFreeMemory(device, stagingBufferMemory, nullptr);
1175
1176 view = createImageView(image, VK_FORMAT_R8G8B8A8_UNORM, VK_IMAGE_ASPECT_COLOR_BIT);
1177 }
1178
1179 void createImageResourcesFromSDLTexture(SDL_Texture* texture, VkImage& image, VkDeviceMemory& imageMemory, VkImageView& view) {
1180 int a, w, h;
1181
1182 // I only need this here for the width and height, which are constants, so just use those instead
1183 SDL_QueryTexture(texture, nullptr, &a, &w, &h);
1184
1185 createImage(w, h, VK_FORMAT_R8G8B8A8_UNORM, VK_IMAGE_TILING_OPTIMAL,
1186 VK_IMAGE_USAGE_TRANSFER_DST_BIT | VK_IMAGE_USAGE_SAMPLED_BIT,
1187 VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT, image, imageMemory);
1188
1189 view = createImageView(image, VK_FORMAT_R8G8B8A8_UNORM, VK_IMAGE_ASPECT_COLOR_BIT);
1190 }
1191
1192 void populateImageFromSDLTexture(SDL_Texture* texture, VkImage& image) {
1193 int a, w, h;
1194
1195 SDL_QueryTexture(texture, nullptr, &a, &w, &h);
1196
1197 VkDeviceSize imageSize = w * h * 4;
1198 unsigned char* pixels = new unsigned char[imageSize];
1199
1200 SDL_RenderReadPixels(gRenderer, nullptr, SDL_PIXELFORMAT_ABGR8888, pixels, w * 4);
1201
1202 VkBuffer stagingBuffer;
1203 VkDeviceMemory stagingBufferMemory;
1204
1205 createBuffer(imageSize,
1206 VK_BUFFER_USAGE_TRANSFER_DST_BIT | VK_BUFFER_USAGE_TRANSFER_SRC_BIT,
1207 VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT,
1208 stagingBuffer, stagingBufferMemory);
1209
1210 void* data;
1211
1212 vkMapMemory(device, stagingBufferMemory, 0, VK_WHOLE_SIZE, 0, &data);
1213 memcpy(data, pixels, static_cast<size_t>(imageSize));
1214
1215 VkMappedMemoryRange mappedMemoryRange = {};
1216 mappedMemoryRange.sType = VK_STRUCTURE_TYPE_MAPPED_MEMORY_RANGE;
1217 mappedMemoryRange.memory = stagingBufferMemory;
1218 mappedMemoryRange.offset = 0;
1219 mappedMemoryRange.size = VK_WHOLE_SIZE;
1220
1221 // TODO: Should probably check that the function succeeded
1222 vkFlushMappedMemoryRanges(device, 1, &mappedMemoryRange);
1223 vkUnmapMemory(device, stagingBufferMemory);
1224
1225 delete[] pixels;
1226
1227 transitionImageLayout(image, VK_FORMAT_R8G8B8A8_UNORM, VK_IMAGE_LAYOUT_UNDEFINED, VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL);
1228 copyBufferToImage(stagingBuffer, image, static_cast<uint32_t>(w), static_cast<uint32_t>(h));
1229 transitionImageLayout(image, VK_FORMAT_R8G8B8A8_UNORM, VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL, VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL);
1230
1231 vkDestroyBuffer(device, stagingBuffer, nullptr);
1232 vkFreeMemory(device, stagingBufferMemory, nullptr);
1233 }
1234
1235 void createImage(uint32_t width, uint32_t height, VkFormat format, VkImageTiling tiling, VkImageUsageFlags usage,
1236 VkMemoryPropertyFlags properties, VkImage& image, VkDeviceMemory& imageMemory) {
1237 VkImageCreateInfo imageInfo = {};
1238 imageInfo.sType = VK_STRUCTURE_TYPE_IMAGE_CREATE_INFO;
1239 imageInfo.imageType = VK_IMAGE_TYPE_2D;
1240 imageInfo.extent.width = width;
1241 imageInfo.extent.height = height;
1242 imageInfo.extent.depth = 1;
1243 imageInfo.mipLevels = 1;
1244 imageInfo.arrayLayers = 1;
1245 imageInfo.format = format;
1246 imageInfo.tiling = tiling;
1247 imageInfo.initialLayout = VK_IMAGE_LAYOUT_UNDEFINED;
1248 imageInfo.usage = usage;
1249 imageInfo.samples = VK_SAMPLE_COUNT_1_BIT;
1250 imageInfo.sharingMode = VK_SHARING_MODE_EXCLUSIVE;
1251
1252 if (vkCreateImage(device, &imageInfo, nullptr, &image) != VK_SUCCESS) {
1253 throw runtime_error("failed to create image!");
1254 }
1255
1256 VkMemoryRequirements memRequirements;
1257 vkGetImageMemoryRequirements(device, image, &memRequirements);
1258
1259 VkMemoryAllocateInfo allocInfo = {};
1260 allocInfo.sType = VK_STRUCTURE_TYPE_MEMORY_ALLOCATE_INFO;
1261 allocInfo.allocationSize = memRequirements.size;
1262 allocInfo.memoryTypeIndex = findMemoryType(memRequirements.memoryTypeBits, properties);
1263
1264 if (vkAllocateMemory(device, &allocInfo, nullptr, &imageMemory) != VK_SUCCESS) {
1265 throw runtime_error("failed to allocate image memory!");
1266 }
1267
1268 vkBindImageMemory(device, image, imageMemory, 0);
1269 }
1270
1271 void transitionImageLayout(VkImage image, VkFormat format, VkImageLayout oldLayout, VkImageLayout newLayout) {
1272 VkCommandBuffer commandBuffer = beginSingleTimeCommands();
1273
1274 VkImageMemoryBarrier barrier = {};
1275 barrier.sType = VK_STRUCTURE_TYPE_IMAGE_MEMORY_BARRIER;
1276 barrier.oldLayout = oldLayout;
1277 barrier.newLayout = newLayout;
1278 barrier.srcQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED;
1279 barrier.dstQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED;
1280 barrier.image = image;
1281
1282 if (newLayout == VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL) {
1283 barrier.subresourceRange.aspectMask = VK_IMAGE_ASPECT_DEPTH_BIT;
1284
1285 if (hasStencilComponent(format)) {
1286 barrier.subresourceRange.aspectMask |= VK_IMAGE_ASPECT_STENCIL_BIT;
1287 }
1288 } else {
1289 barrier.subresourceRange.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT;
1290 }
1291
1292 barrier.subresourceRange.baseMipLevel = 0;
1293 barrier.subresourceRange.levelCount = 1;
1294 barrier.subresourceRange.baseArrayLayer = 0;
1295 barrier.subresourceRange.layerCount = 1;
1296
1297 VkPipelineStageFlags sourceStage;
1298 VkPipelineStageFlags destinationStage;
1299
1300 if (oldLayout == VK_IMAGE_LAYOUT_UNDEFINED && newLayout == VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL) {
1301 barrier.srcAccessMask = 0;
1302 barrier.dstAccessMask = VK_ACCESS_TRANSFER_WRITE_BIT;
1303
1304 sourceStage = VK_PIPELINE_STAGE_TOP_OF_PIPE_BIT;
1305 destinationStage = VK_PIPELINE_STAGE_TRANSFER_BIT;
1306 } else if (oldLayout == VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL && newLayout == VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL) {
1307 barrier.srcAccessMask = VK_ACCESS_TRANSFER_WRITE_BIT;
1308 barrier.dstAccessMask = VK_ACCESS_SHADER_READ_BIT;
1309
1310 sourceStage = VK_PIPELINE_STAGE_TRANSFER_BIT;
1311 destinationStage = VK_PIPELINE_STAGE_FRAGMENT_SHADER_BIT;
1312 } else if (oldLayout == VK_IMAGE_LAYOUT_UNDEFINED && newLayout == VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL) {
1313 barrier.srcAccessMask = 0;
1314 barrier.dstAccessMask = VK_ACCESS_DEPTH_STENCIL_ATTACHMENT_READ_BIT | VK_ACCESS_DEPTH_STENCIL_ATTACHMENT_WRITE_BIT;
1315
1316 sourceStage = VK_PIPELINE_STAGE_TOP_OF_PIPE_BIT;
1317 destinationStage = VK_PIPELINE_STAGE_EARLY_FRAGMENT_TESTS_BIT;
1318 } else {
1319 throw invalid_argument("unsupported layout transition!");
1320 }
1321
1322 vkCmdPipelineBarrier(
1323 commandBuffer,
1324 sourceStage, destinationStage,
1325 0,
1326 0, nullptr,
1327 0, nullptr,
1328 1, &barrier
1329 );
1330
1331 endSingleTimeCommands(commandBuffer);
1332 }
1333
1334 void copyBufferToImage(VkBuffer buffer, VkImage image, uint32_t width, uint32_t height) {
1335 VkCommandBuffer commandBuffer = beginSingleTimeCommands();
1336
1337 VkBufferImageCopy region = {};
1338 region.bufferOffset = 0;
1339 region.bufferRowLength = 0;
1340 region.bufferImageHeight = 0;
1341 region.imageSubresource.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT;
1342 region.imageSubresource.mipLevel = 0;
1343 region.imageSubresource.baseArrayLayer = 0;
1344 region.imageSubresource.layerCount = 1;
1345 region.imageOffset = { 0, 0, 0 };
1346 region.imageExtent = { width, height, 1 };
1347
1348 vkCmdCopyBufferToImage(
1349 commandBuffer,
1350 buffer,
1351 image,
1352 VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL,
1353 1,
1354 &region
1355 );
1356
1357 endSingleTimeCommands(commandBuffer);
1358 }
1359
1360/*** START OF REFACTORED CODE ***/
1361 VkImageView createImageView(VkImage image, VkFormat format, VkImageAspectFlags aspectFlags) {
1362 VkImageViewCreateInfo viewInfo = {};
1363 viewInfo.sType = VK_STRUCTURE_TYPE_IMAGE_VIEW_CREATE_INFO;
1364 viewInfo.image = image;
1365 viewInfo.viewType = VK_IMAGE_VIEW_TYPE_2D;
1366 viewInfo.format = format;
1367
1368 viewInfo.components.r = VK_COMPONENT_SWIZZLE_IDENTITY;
1369 viewInfo.components.g = VK_COMPONENT_SWIZZLE_IDENTITY;
1370 viewInfo.components.b = VK_COMPONENT_SWIZZLE_IDENTITY;
1371 viewInfo.components.a = VK_COMPONENT_SWIZZLE_IDENTITY;
1372
1373 viewInfo.subresourceRange.aspectMask = aspectFlags;
1374 viewInfo.subresourceRange.baseMipLevel = 0;
1375 viewInfo.subresourceRange.levelCount = 1;
1376 viewInfo.subresourceRange.baseArrayLayer = 0;
1377 viewInfo.subresourceRange.layerCount = 1;
1378
1379 VkImageView imageView;
1380 if (vkCreateImageView(device, &viewInfo, nullptr, &imageView) != VK_SUCCESS) {
1381 throw runtime_error("failed to create texture image view!");
1382 }
1383
1384 return imageView;
1385 }
1386/*** END OF REFACTORED CODE ***/
1387
1388 void createTextureSampler() {
1389 VkSamplerCreateInfo samplerInfo = {};
1390 samplerInfo.sType = VK_STRUCTURE_TYPE_SAMPLER_CREATE_INFO;
1391 samplerInfo.magFilter = VK_FILTER_LINEAR;
1392 samplerInfo.minFilter = VK_FILTER_LINEAR;
1393
1394 samplerInfo.addressModeU = VK_SAMPLER_ADDRESS_MODE_REPEAT;
1395 samplerInfo.addressModeV = VK_SAMPLER_ADDRESS_MODE_REPEAT;
1396 samplerInfo.addressModeW = VK_SAMPLER_ADDRESS_MODE_REPEAT;
1397
1398 samplerInfo.anisotropyEnable = VK_TRUE;
1399 samplerInfo.maxAnisotropy = 16;
1400 samplerInfo.borderColor = VK_BORDER_COLOR_INT_OPAQUE_BLACK;
1401 samplerInfo.unnormalizedCoordinates = VK_FALSE;
1402 samplerInfo.compareEnable = VK_FALSE;
1403 samplerInfo.compareOp = VK_COMPARE_OP_ALWAYS;
1404 samplerInfo.mipmapMode = VK_SAMPLER_MIPMAP_MODE_LINEAR;
1405 samplerInfo.mipLodBias = 0.0f;
1406 samplerInfo.minLod = 0.0f;
1407 samplerInfo.maxLod = 0.0f;
1408
1409 if (vkCreateSampler(device, &samplerInfo, nullptr, &textureSampler) != VK_SUCCESS) {
1410 throw runtime_error("failed to create texture sampler!");
1411 }
1412 }
1413
1414 void createVertexBuffer(GraphicsPipelineInfo& info, const void* vertexData, int vertexSize) {
1415 VkDeviceSize bufferSize = info.numVertices * vertexSize;
1416 VkDeviceSize bufferCapacity = info.vertexCapacity * vertexSize;
1417
1418 VkBuffer stagingBuffer;
1419 VkDeviceMemory stagingBufferMemory;
1420 createBuffer(bufferSize, VK_BUFFER_USAGE_TRANSFER_SRC_BIT,
1421 VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | VK_MEMORY_PROPERTY_HOST_COHERENT_BIT,
1422 stagingBuffer, stagingBufferMemory);
1423
1424 void* data;
1425 vkMapMemory(device, stagingBufferMemory, 0, bufferSize, 0, &data);
1426 memcpy(data, vertexData, (size_t) bufferSize);
1427 vkUnmapMemory(device, stagingBufferMemory);
1428
1429 createBuffer(bufferCapacity, VK_BUFFER_USAGE_TRANSFER_DST_BIT | VK_BUFFER_USAGE_VERTEX_BUFFER_BIT,
1430 VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT, info.vertexBuffer, info.vertexBufferMemory);
1431
1432 copyBuffer(stagingBuffer, info.vertexBuffer, 0, 0, bufferSize);
1433
1434 vkDestroyBuffer(device, stagingBuffer, nullptr);
1435 vkFreeMemory(device, stagingBufferMemory, nullptr);
1436 }
1437
1438 void createIndexBuffer(GraphicsPipelineInfo& info, const void* indexData, int indexSize) {
1439 VkDeviceSize bufferSize = info.numIndices * indexSize;
1440 VkDeviceSize bufferCapacity = info.indexCapacity * indexSize;
1441
1442 VkBuffer stagingBuffer;
1443 VkDeviceMemory stagingBufferMemory;
1444 createBuffer(bufferSize, VK_BUFFER_USAGE_TRANSFER_SRC_BIT,
1445 VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | VK_MEMORY_PROPERTY_HOST_COHERENT_BIT,
1446 stagingBuffer, stagingBufferMemory);
1447
1448 void* data;
1449 vkMapMemory(device, stagingBufferMemory, 0, bufferSize, 0, &data);
1450 memcpy(data, indexData, (size_t) bufferSize);
1451 vkUnmapMemory(device, stagingBufferMemory);
1452
1453 createBuffer(bufferCapacity, VK_BUFFER_USAGE_TRANSFER_DST_BIT | VK_BUFFER_USAGE_INDEX_BUFFER_BIT,
1454 VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT, info.indexBuffer, info.indexBufferMemory);
1455
1456 copyBuffer(stagingBuffer, info.indexBuffer, 0, 0, bufferSize);
1457
1458 vkDestroyBuffer(device, stagingBuffer, nullptr);
1459 vkFreeMemory(device, stagingBufferMemory, nullptr);
1460 }
1461
1462 void createUniformBuffers() {
1463 VkDeviceSize bufferSize = sizeof(UniformBufferObject);
1464
1465 uniformBuffers.resize(swapChainImages.size());
1466 uniformBuffersMemory.resize(swapChainImages.size());
1467 uniformBufferInfoList.resize(swapChainImages.size());
1468
1469 for (size_t i = 0; i < swapChainImages.size(); i++) {
1470 createBuffer(bufferSize, VK_BUFFER_USAGE_UNIFORM_BUFFER_BIT,
1471 VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | VK_MEMORY_PROPERTY_HOST_COHERENT_BIT,
1472 uniformBuffers[i], uniformBuffersMemory[i]);
1473
1474 uniformBufferInfoList[i].buffer = uniformBuffers[i];
1475 uniformBufferInfoList[i].offset = 0;
1476 uniformBufferInfoList[i].range = sizeof(UniformBufferObject);
1477 }
1478 }
1479
1480 void createBuffer(VkDeviceSize size, VkBufferUsageFlags usage, VkMemoryPropertyFlags properties, VkBuffer& buffer, VkDeviceMemory& bufferMemory) {
1481 VkBufferCreateInfo bufferInfo = {};
1482 bufferInfo.sType = VK_STRUCTURE_TYPE_BUFFER_CREATE_INFO;
1483 bufferInfo.size = size;
1484 bufferInfo.usage = usage;
1485 bufferInfo.sharingMode = VK_SHARING_MODE_EXCLUSIVE;
1486
1487 if (vkCreateBuffer(device, &bufferInfo, nullptr, &buffer) != VK_SUCCESS) {
1488 throw runtime_error("failed to create buffer!");
1489 }
1490
1491 VkMemoryRequirements memRequirements;
1492 vkGetBufferMemoryRequirements(device, buffer, &memRequirements);
1493
1494 VkMemoryAllocateInfo allocInfo = {};
1495 allocInfo.sType = VK_STRUCTURE_TYPE_MEMORY_ALLOCATE_INFO;
1496 allocInfo.allocationSize = memRequirements.size;
1497 allocInfo.memoryTypeIndex = findMemoryType(memRequirements.memoryTypeBits, properties);
1498
1499 if (vkAllocateMemory(device, &allocInfo, nullptr, &bufferMemory) != VK_SUCCESS) {
1500 throw runtime_error("failed to allocate buffer memory!");
1501 }
1502
1503 vkBindBufferMemory(device, buffer, bufferMemory, 0);
1504 }
1505
1506 void copyDataToBuffer(const void* srcData, VkBuffer dst, VkDeviceSize dstOffset, VkDeviceSize dataSize) {
1507 VkBuffer stagingBuffer;
1508 VkDeviceMemory stagingBufferMemory;
1509 createBuffer(dataSize, VK_BUFFER_USAGE_TRANSFER_SRC_BIT,
1510 VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | VK_MEMORY_PROPERTY_HOST_COHERENT_BIT,
1511 stagingBuffer, stagingBufferMemory);
1512
1513 void* data;
1514 vkMapMemory(device, stagingBufferMemory, 0, dataSize, 0, &data);
1515 memcpy(data, srcData, (size_t) dataSize);
1516 vkUnmapMemory(device, stagingBufferMemory);
1517
1518 copyBuffer(stagingBuffer, dst, 0, dstOffset, dataSize);
1519
1520 vkDestroyBuffer(device, stagingBuffer, nullptr);
1521 vkFreeMemory(device, stagingBufferMemory, nullptr);
1522 }
1523
1524 void copyBuffer(VkBuffer srcBuffer, VkBuffer dstBuffer, VkDeviceSize srcOffset, VkDeviceSize dstOffset,
1525 VkDeviceSize size) {
1526 VkCommandBuffer commandBuffer = beginSingleTimeCommands();
1527
1528 VkBufferCopy copyRegion = { srcOffset, dstOffset, size };
1529 vkCmdCopyBuffer(commandBuffer, srcBuffer, dstBuffer, 1, &copyRegion);
1530
1531 endSingleTimeCommands(commandBuffer);
1532 }
1533
1534 VkCommandBuffer beginSingleTimeCommands() {
1535 VkCommandBufferAllocateInfo allocInfo = {};
1536 allocInfo.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_ALLOCATE_INFO;
1537 allocInfo.level = VK_COMMAND_BUFFER_LEVEL_PRIMARY;
1538 allocInfo.commandPool = commandPool;
1539 allocInfo.commandBufferCount = 1;
1540
1541 VkCommandBuffer commandBuffer;
1542 vkAllocateCommandBuffers(device, &allocInfo, &commandBuffer);
1543
1544 VkCommandBufferBeginInfo beginInfo = {};
1545 beginInfo.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_BEGIN_INFO;
1546 beginInfo.flags = VK_COMMAND_BUFFER_USAGE_ONE_TIME_SUBMIT_BIT;
1547
1548 vkBeginCommandBuffer(commandBuffer, &beginInfo);
1549
1550 return commandBuffer;
1551 }
1552
1553 void endSingleTimeCommands(VkCommandBuffer commandBuffer) {
1554 vkEndCommandBuffer(commandBuffer);
1555
1556 VkSubmitInfo submitInfo = {};
1557 submitInfo.sType = VK_STRUCTURE_TYPE_SUBMIT_INFO;
1558 submitInfo.commandBufferCount = 1;
1559 submitInfo.pCommandBuffers = &commandBuffer;
1560
1561 vkQueueSubmit(graphicsQueue, 1, &submitInfo, VK_NULL_HANDLE);
1562 vkQueueWaitIdle(graphicsQueue);
1563
1564 vkFreeCommandBuffers(device, commandPool, 1, &commandBuffer);
1565 }
1566
1567 uint32_t findMemoryType(uint32_t typeFilter, VkMemoryPropertyFlags properties) {
1568 VkPhysicalDeviceMemoryProperties memProperties;
1569 vkGetPhysicalDeviceMemoryProperties(physicalDevice, &memProperties);
1570
1571 for (uint32_t i = 0; i < memProperties.memoryTypeCount; i++) {
1572 if ((typeFilter & (1 << i)) && (memProperties.memoryTypes[i].propertyFlags & properties) == properties) {
1573 return i;
1574 }
1575 }
1576
1577 throw runtime_error("failed to find suitable memory type!");
1578 }
1579
1580 void createDescriptorPool(GraphicsPipelineInfo& info) {
1581 vector<VkDescriptorPoolSize> poolSizes(info.descriptorInfoList.size());
1582
1583 for (size_t i = 0; i < poolSizes.size(); i++) {
1584 poolSizes[i].type = info.descriptorInfoList[i].type;
1585 poolSizes[i].descriptorCount = static_cast<uint32_t>(swapChainImages.size());
1586 }
1587
1588 VkDescriptorPoolCreateInfo poolInfo = {};
1589 poolInfo.sType = VK_STRUCTURE_TYPE_DESCRIPTOR_POOL_CREATE_INFO;
1590 poolInfo.poolSizeCount = static_cast<uint32_t>(poolSizes.size());
1591 poolInfo.pPoolSizes = poolSizes.data();
1592 poolInfo.maxSets = static_cast<uint32_t>(swapChainImages.size());
1593
1594 if (vkCreateDescriptorPool(device, &poolInfo, nullptr, &info.descriptorPool) != VK_SUCCESS) {
1595 throw runtime_error("failed to create descriptor pool!");
1596 }
1597 }
1598
1599 void createDescriptorSets(GraphicsPipelineInfo& info) {
1600 vector<VkDescriptorSetLayout> layouts(swapChainImages.size(), info.descriptorSetLayout);
1601
1602 VkDescriptorSetAllocateInfo allocInfo = {};
1603 allocInfo.sType = VK_STRUCTURE_TYPE_DESCRIPTOR_SET_ALLOCATE_INFO;
1604 allocInfo.descriptorPool = info.descriptorPool;
1605 allocInfo.descriptorSetCount = static_cast<uint32_t>(swapChainImages.size());
1606 allocInfo.pSetLayouts = layouts.data();
1607
1608 info.descriptorSets.resize(swapChainImages.size());
1609 if (vkAllocateDescriptorSets(device, &allocInfo, info.descriptorSets.data()) != VK_SUCCESS) {
1610 throw runtime_error("failed to allocate descriptor sets!");
1611 }
1612
1613 for (size_t i = 0; i < swapChainImages.size(); i++) {
1614 vector<VkWriteDescriptorSet> descriptorWrites(info.descriptorInfoList.size());
1615
1616 for (size_t j = 0; j < descriptorWrites.size(); j++) {
1617 descriptorWrites[j].sType = VK_STRUCTURE_TYPE_WRITE_DESCRIPTOR_SET;
1618 descriptorWrites[j].dstSet = info.descriptorSets[i];
1619 descriptorWrites[j].dstBinding = j;
1620 descriptorWrites[j].dstArrayElement = 0;
1621 descriptorWrites[j].descriptorType = info.descriptorInfoList[j].type;
1622 descriptorWrites[j].descriptorCount = 1;
1623 descriptorWrites[j].pBufferInfo = nullptr;
1624 descriptorWrites[j].pImageInfo = nullptr;
1625 descriptorWrites[j].pTexelBufferView = nullptr;
1626
1627 switch (descriptorWrites[j].descriptorType) {
1628 case VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER:
1629 descriptorWrites[j].pBufferInfo = &(*info.descriptorInfoList[j].bufferDataList)[i];
1630 break;
1631 case VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER:
1632 descriptorWrites[j].pImageInfo = info.descriptorInfoList[j].imageData;
1633 break;
1634 default:
1635 cout << "Unknown descriptor type: " << descriptorWrites[j].descriptorType << endl;
1636 }
1637 }
1638
1639 vkUpdateDescriptorSets(device, static_cast<uint32_t>(descriptorWrites.size()), descriptorWrites.data(), 0, nullptr);
1640 }
1641 }
1642
1643 void createCommandBuffers() {
1644 commandBuffers.resize(swapChainFramebuffers.size());
1645
1646 VkCommandBufferAllocateInfo allocInfo = {};
1647 allocInfo.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_ALLOCATE_INFO;
1648 allocInfo.commandPool = commandPool;
1649 allocInfo.level = VK_COMMAND_BUFFER_LEVEL_PRIMARY;
1650 allocInfo.commandBufferCount = (uint32_t) commandBuffers.size();
1651
1652 if (vkAllocateCommandBuffers(device, &allocInfo, commandBuffers.data()) != VK_SUCCESS) {
1653 throw runtime_error("failed to allocate command buffers!");
1654 }
1655
1656 for (size_t i = 0; i < commandBuffers.size(); i++) {
1657 VkCommandBufferBeginInfo beginInfo = {};
1658 beginInfo.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_BEGIN_INFO;
1659 beginInfo.flags = VK_COMMAND_BUFFER_USAGE_SIMULTANEOUS_USE_BIT;
1660 beginInfo.pInheritanceInfo = nullptr;
1661
1662 if (vkBeginCommandBuffer(commandBuffers[i], &beginInfo) != VK_SUCCESS) {
1663 throw runtime_error("failed to begin recording command buffer!");
1664 }
1665
1666 VkRenderPassBeginInfo renderPassInfo = {};
1667 renderPassInfo.sType = VK_STRUCTURE_TYPE_RENDER_PASS_BEGIN_INFO;
1668 renderPassInfo.renderPass = renderPass;
1669 renderPassInfo.framebuffer = swapChainFramebuffers[i];
1670 renderPassInfo.renderArea.offset = { 0, 0 };
1671 renderPassInfo.renderArea.extent = swapChainExtent;
1672
1673 array<VkClearValue, 2> clearValues = {};
1674 clearValues[0].color = {{ 0.0f, 0.0f, 0.0f, 1.0f }};
1675 clearValues[1].depthStencil = { 1.0f, 0 };
1676
1677 renderPassInfo.clearValueCount = static_cast<uint32_t>(clearValues.size());
1678 renderPassInfo.pClearValues = clearValues.data();
1679
1680 vkCmdBeginRenderPass(commandBuffers[i], &renderPassInfo, VK_SUBPASS_CONTENTS_INLINE);
1681
1682 createGraphicsPipelineCommands(scenePipeline, i);
1683 createGraphicsPipelineCommands(overlayPipeline, i);
1684
1685 vkCmdEndRenderPass(commandBuffers[i]);
1686
1687 if (vkEndCommandBuffer(commandBuffers[i]) != VK_SUCCESS) {
1688 throw runtime_error("failed to record command buffer!");
1689 }
1690 }
1691 }
1692
1693 void createGraphicsPipelineCommands(GraphicsPipelineInfo& info, uint32_t currentImage) {
1694 vkCmdBindPipeline(commandBuffers[currentImage], VK_PIPELINE_BIND_POINT_GRAPHICS, info.pipeline);
1695 vkCmdBindDescriptorSets(commandBuffers[currentImage], VK_PIPELINE_BIND_POINT_GRAPHICS, info.pipelineLayout, 0, 1,
1696 &info.descriptorSets[currentImage], 0, nullptr);
1697
1698 VkBuffer vertexBuffers[] = { info.vertexBuffer };
1699 VkDeviceSize offsets[] = { 0 };
1700 vkCmdBindVertexBuffers(commandBuffers[currentImage], 0, 1, vertexBuffers, offsets);
1701
1702 vkCmdBindIndexBuffer(commandBuffers[currentImage], info.indexBuffer, 0, VK_INDEX_TYPE_UINT16);
1703
1704 vkCmdDrawIndexed(commandBuffers[currentImage], static_cast<uint32_t>(info.numIndices), 1, 0, 0, 0);
1705 }
1706
1707 void createSyncObjects() {
1708 imageAvailableSemaphores.resize(MAX_FRAMES_IN_FLIGHT);
1709 renderFinishedSemaphores.resize(MAX_FRAMES_IN_FLIGHT);
1710 inFlightFences.resize(MAX_FRAMES_IN_FLIGHT);
1711
1712 VkSemaphoreCreateInfo semaphoreInfo = {};
1713 semaphoreInfo.sType = VK_STRUCTURE_TYPE_SEMAPHORE_CREATE_INFO;
1714
1715 VkFenceCreateInfo fenceInfo = {};
1716 fenceInfo.sType = VK_STRUCTURE_TYPE_FENCE_CREATE_INFO;
1717 fenceInfo.flags = VK_FENCE_CREATE_SIGNALED_BIT;
1718
1719 for (size_t i = 0; i < MAX_FRAMES_IN_FLIGHT; i++) {
1720 if (vkCreateSemaphore(device, &semaphoreInfo, nullptr, &imageAvailableSemaphores[i]) != VK_SUCCESS ||
1721 vkCreateSemaphore(device, &semaphoreInfo, nullptr, &renderFinishedSemaphores[i]) != VK_SUCCESS ||
1722 vkCreateFence(device, &fenceInfo, nullptr, &inFlightFences[i]) != VK_SUCCESS) {
1723 throw runtime_error("failed to create synchronization objects for a frame!");
1724 }
1725 }
1726 }
1727
1728 bool addObjectToScene(GraphicsPipelineInfo& info,
1729 const void* vertexData, int vertexSize, size_t numVertices,
1730 vector<uint16_t>& indices, size_t numIndices) {
1731 int indexSize = sizeof(uint16_t);
1732
1733 for (uint16_t& idx : indices) {
1734 idx += info.numVertices;
1735 }
1736
1737 if (info.numVertices + numVertices > info.vertexCapacity) {
1738 cout << "ERROR: Need to resize vertex buffers" << endl;
1739 } else if (info.numIndices + numIndices > info.indexCapacity) {
1740 cout << "ERROR: Need to resize index buffers" << endl;
1741 } else {
1742 cout << "Added object to scene" << endl;
1743
1744 copyDataToBuffer(vertexData, info.vertexBuffer, info.numVertices * vertexSize, numVertices * vertexSize);
1745 info.numVertices += numVertices;
1746
1747 copyDataToBuffer(indices.data(), info.indexBuffer, info.numIndices * indexSize, numIndices * indexSize);
1748 info.numIndices += numIndices;
1749
1750 vkFreeCommandBuffers(device, commandPool, static_cast<uint32_t>(commandBuffers.size()), commandBuffers.data());
1751 createCommandBuffers();
1752
1753 return true;
1754 }
1755
1756 return false;
1757 }
1758
1759/*** START OF REFACTORED CODE ***/
1760 void mainLoop() {
1761 // TODO: Create some generic event-handling functions in game-gui-*
1762 SDL_Event e;
1763 bool quit = false;
1764
1765 while (!quit) {
1766 while (SDL_PollEvent(&e)) {
1767 if (e.type == SDL_QUIT) {
1768 quit = true;
1769 }
1770 if (e.type == SDL_KEYDOWN) {
1771 if (e.key.keysym.sym == SDLK_SPACE) {
1772 float zOffset = -0.5f + (0.5f * numPlanes);
1773 vector<Vertex> vertices = {
1774 {{-0.5f, -0.5f, zOffset}, {1.0f, 0.0f, 0.0f}, {0.0f, 1.0f}},
1775 {{ 0.5f, -0.5f, zOffset}, {0.0f, 1.0f, 0.0f}, {1.0f, 1.0f}},
1776 {{ 0.5f, 0.5f, zOffset}, {0.0f, 0.0f, 1.0f}, {1.0f, 0.0f}},
1777 {{-0.5f, 0.5f, zOffset}, {1.0f, 1.0f, 1.0f}, {0.0f, 0.0f}}
1778 };
1779 vector<uint16_t> indices = {
1780 0, 1, 2, 2, 3, 0
1781 };
1782
1783 if (addObjectToScene(scenePipeline,
1784 vertices.data(), sizeof(Vertex), vertices.size(),
1785 indices, indices.size())) {
1786 numPlanes++;
1787 }
1788 } else if (e.key.keysym.sym == SDLK_ESCAPE) {
1789 quit = true;
1790 }
1791 }
1792 if (e.type == SDL_MOUSEBUTTONDOWN) {
1793 quit = true;
1794 }
1795 if (e.type == SDL_WINDOWEVENT) {
1796 if (e.window.event == SDL_WINDOWEVENT_SIZE_CHANGED ||
1797 e.window.event == SDL_WINDOWEVENT_MINIMIZED) {
1798 framebufferResized = true;
1799 }
1800 }
1801 }
1802
1803 drawUI();
1804
1805 drawFrame();
1806 }
1807
1808 vkDeviceWaitIdle(device);
1809 }
1810
1811 void drawFrame() {
1812/*** END OF REFACTORED CODE ***/
1813 vkWaitForFences(device, 1, &inFlightFences[currentFrame], VK_TRUE, numeric_limits<uint64_t>::max());
1814
1815 uint32_t imageIndex;
1816
1817 VkResult result = vkAcquireNextImageKHR(device, swapChain, numeric_limits<uint64_t>::max(),
1818 imageAvailableSemaphores[currentFrame], VK_NULL_HANDLE, &imageIndex);
1819
1820 if (result == VK_ERROR_OUT_OF_DATE_KHR) {
1821 recreateSwapChain();
1822 return;
1823 } else if (result != VK_SUCCESS && result != VK_SUBOPTIMAL_KHR) {
1824 throw runtime_error("failed to acquire swap chain image!");
1825 }
1826
1827 updateUniformBuffer(imageIndex);
1828
1829 VkSubmitInfo submitInfo = {};
1830 submitInfo.sType = VK_STRUCTURE_TYPE_SUBMIT_INFO;
1831
1832 VkSemaphore waitSemaphores[] = { imageAvailableSemaphores[currentFrame] };
1833 VkPipelineStageFlags waitStages[] = { VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT };
1834
1835 submitInfo.waitSemaphoreCount = 1;
1836 submitInfo.pWaitSemaphores = waitSemaphores;
1837 submitInfo.pWaitDstStageMask = waitStages;
1838 submitInfo.commandBufferCount = 1;
1839 submitInfo.pCommandBuffers = &commandBuffers[imageIndex];
1840
1841 VkSemaphore signalSemaphores[] = { renderFinishedSemaphores[currentFrame] };
1842
1843 submitInfo.signalSemaphoreCount = 1;
1844 submitInfo.pSignalSemaphores = signalSemaphores;
1845
1846 vkResetFences(device, 1, &inFlightFences[currentFrame]);
1847
1848 if (vkQueueSubmit(graphicsQueue, 1, &submitInfo, inFlightFences[currentFrame]) != VK_SUCCESS) {
1849 throw runtime_error("failed to submit draw command buffer!");
1850 }
1851
1852 VkPresentInfoKHR presentInfo = {};
1853 presentInfo.sType = VK_STRUCTURE_TYPE_PRESENT_INFO_KHR;
1854 presentInfo.waitSemaphoreCount = 1;
1855 presentInfo.pWaitSemaphores = signalSemaphores;
1856
1857 VkSwapchainKHR swapChains[] = { swapChain };
1858 presentInfo.swapchainCount = 1;
1859 presentInfo.pSwapchains = swapChains;
1860 presentInfo.pImageIndices = &imageIndex;
1861 presentInfo.pResults = nullptr;
1862
1863 result = vkQueuePresentKHR(presentQueue, &presentInfo);
1864
1865 if (result == VK_ERROR_OUT_OF_DATE_KHR || result == VK_SUBOPTIMAL_KHR || framebufferResized) {
1866 framebufferResized = false;
1867 recreateSwapChain();
1868 } else if (result != VK_SUCCESS) {
1869 throw runtime_error("failed to present swap chain image!");
1870 }
1871
1872 currentFrame = (currentFrame + 1) % MAX_FRAMES_IN_FLIGHT;
1873 currentFrame = (currentFrame + 1) % MAX_FRAMES_IN_FLIGHT;
1874/*** START OF REFACTORED CODE ***/
1875 }
1876
1877 void drawUI() {
1878/*** END OF REFACTORED CODE ***/
1879 // TODO: Since I currently don't use any other render targets,
1880 // I may as well set this once before the render loop
1881 SDL_SetRenderTarget(gRenderer, uiOverlay);
1882
1883 SDL_SetRenderDrawColor(gRenderer, 0x00, 0x00, 0x00, 0x00);
1884 SDL_RenderClear(gRenderer);
1885
1886 SDL_Rect rect;
1887
1888 rect = {280, 220, 100, 100};
1889 SDL_SetRenderDrawColor(gRenderer, 0x00, 0xFF, 0x00, 0xFF);
1890 SDL_RenderFillRect(gRenderer, &rect);
1891 SDL_SetRenderDrawColor(gRenderer, 0x00, 0x9F, 0x9F, 0xFF);
1892
1893 rect = {10, 10, 0, 0};
1894 SDL_QueryTexture(uiText, nullptr, nullptr, &(rect.w), &(rect.h));
1895 SDL_RenderCopy(gRenderer, uiText, nullptr, &rect);
1896
1897 rect = {10, 80, 0, 0};
1898 SDL_QueryTexture(uiImage, nullptr, nullptr, &(rect.w), &(rect.h));
1899 SDL_RenderCopy(gRenderer, uiImage, nullptr, &rect);
1900
1901 SDL_SetRenderDrawColor(gRenderer, 0x00, 0x00, 0xFF, 0xFF);
1902 SDL_RenderDrawLine(gRenderer, 50, 5, 150, 500);
1903
1904 populateImageFromSDLTexture(uiOverlay, sdlOverlayImage);
1905/*** START OF REFACTORED CODE ***/
1906 }
1907/*** END OF REFACTORED CODE ***/
1908
1909 void updateUniformBuffer(uint32_t currentImage) {
1910 static auto startTime = chrono::high_resolution_clock::now();
1911
1912 auto currentTime = chrono::high_resolution_clock::now();
1913 float time = chrono::duration<float, chrono::seconds::period>(currentTime - startTime).count();
1914
1915 UniformBufferObject ubo = {};
1916 ubo.model = rotate(glm::mat4(1.0f), time * glm::radians(90.0f), glm::vec3(0.0f, 0.0f, 1.0f));
1917 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));
1918 ubo.proj = perspective(radians(45.0f), swapChainExtent.width / (float)swapChainExtent.height, 0.1f, 10.0f);
1919 ubo.proj[1][1] *= -1; // flip the y-axis so that +y is up
1920
1921 void* data;
1922 vkMapMemory(device, uniformBuffersMemory[currentImage], 0, sizeof(ubo), 0, &data);
1923 memcpy(data, &ubo, sizeof(ubo));
1924 vkUnmapMemory(device, uniformBuffersMemory[currentImage]);
1925 }
1926
1927 void recreateSwapChain() {
1928 gui->refreshWindowSize();
1929
1930 while (gui->getWindowWidth() == 0 || gui->getWindowHeight() == 0 ||
1931 (SDL_GetWindowFlags(window) & SDL_WINDOW_MINIMIZED) != 0) {
1932 SDL_WaitEvent(nullptr);
1933 gui->refreshWindowSize();
1934 }
1935
1936 vkDeviceWaitIdle(device);
1937
1938 cleanupSwapChain();
1939
1940 createSwapChain();
1941 createImageViews();
1942 createRenderPass();
1943
1944 createBufferResources();
1945 }
1946
1947 void createBufferResources() {
1948 createDepthResources();
1949 createFramebuffers();
1950 createUniformBuffers();
1951
1952 createGraphicsPipeline("shaders/scene-vert.spv", "shaders/scene-frag.spv", scenePipeline);
1953 createDescriptorPool(scenePipeline);
1954 createDescriptorSets(scenePipeline);
1955
1956 createGraphicsPipeline("shaders/overlay-vert.spv", "shaders/overlay-frag.spv", overlayPipeline);
1957 createDescriptorPool(overlayPipeline);
1958 createDescriptorSets(overlayPipeline);
1959
1960 createCommandBuffers();
1961 }
1962
1963/*** START OF REFACTORED CODE ***/
1964 void cleanup() {
1965 cleanupSwapChain();
1966/*** END OF REFACTORED CODE ***/
1967
1968 vkDestroySampler(device, textureSampler, nullptr);
1969
1970 vkDestroyImageView(device, textureImageView, nullptr);
1971 vkDestroyImage(device, textureImage, nullptr);
1972 vkFreeMemory(device, textureImageMemory, nullptr);
1973
1974 vkDestroyImageView(device, overlayImageView, nullptr);
1975 vkDestroyImage(device, overlayImage, nullptr);
1976 vkFreeMemory(device, overlayImageMemory, nullptr);
1977
1978 vkDestroyImageView(device, sdlOverlayImageView, nullptr);
1979 vkDestroyImage(device, sdlOverlayImage, nullptr);
1980 vkFreeMemory(device, sdlOverlayImageMemory, nullptr);
1981
1982 cleanupPipelineBuffers(scenePipeline);
1983 cleanupPipelineBuffers(overlayPipeline);
1984
1985 for (size_t i = 0; i < MAX_FRAMES_IN_FLIGHT; i++) {
1986 vkDestroySemaphore(device, renderFinishedSemaphores[i], nullptr);
1987 vkDestroySemaphore(device, imageAvailableSemaphores[i], nullptr);
1988 vkDestroyFence(device, inFlightFences[i], nullptr);
1989 }
1990
1991/*** START OF REFACTORED CODE ***/
1992 vkDestroyCommandPool(device, commandPool, nullptr);
1993 vkDestroyDevice(device, nullptr);
1994 vkDestroySurfaceKHR(instance, surface, nullptr);
1995
1996 if (enableValidationLayers) {
1997 DestroyDebugUtilsMessengerEXT(instance, debugMessenger, nullptr);
1998 }
1999
2000 vkDestroyInstance(instance, nullptr);
2001/*** END OF REFACTORED CODE ***/
2002
2003 // TODO: Check if any of these functions accept null parameters
2004 // If they do, I don't need to check for that
2005
2006 if (uiOverlay != nullptr) {
2007 SDL_DestroyTexture(uiOverlay);
2008 uiOverlay = nullptr;
2009 }
2010
2011 TTF_CloseFont(gFont);
2012 gFont = nullptr;
2013
2014 if (uiText != nullptr) {
2015 SDL_DestroyTexture(uiText);
2016 uiText = nullptr;
2017 }
2018
2019 if (uiImage != nullptr) {
2020 SDL_DestroyTexture(uiImage);
2021 uiImage = nullptr;
2022 }
2023
2024/*** START OF REFACTORED CODE ***/
2025 SDL_DestroyRenderer(gRenderer);
2026 gRenderer = nullptr;
2027
2028 gui->destroyWindow();
2029 gui->shutdown();
2030 delete gui;
2031 }
2032
2033 void cleanupSwapChain() {
2034/*** END OF REFACTORED CODE ***/
2035 vkDestroyImageView(device, depthImageView, nullptr);
2036 vkDestroyImage(device, depthImage, nullptr);
2037 vkFreeMemory(device, depthImageMemory, nullptr);
2038
2039 for (auto framebuffer : swapChainFramebuffers) {
2040 vkDestroyFramebuffer(device, framebuffer, nullptr);
2041 }
2042
2043 vkFreeCommandBuffers(device, commandPool, static_cast<uint32_t>(commandBuffers.size()), commandBuffers.data());
2044
2045 cleanupPipeline(scenePipeline);
2046 cleanupPipeline(overlayPipeline);
2047
2048/*** START OF REFACTORED CODE ***/
2049 vkDestroyRenderPass(device, renderPass, nullptr);
2050
2051 for (auto imageView : swapChainImageViews) {
2052 vkDestroyImageView(device, imageView, nullptr);
2053 }
2054
2055 vkDestroySwapchainKHR(device, swapChain, nullptr);
2056/*** END OF REFACTORED CODE ***/
2057
2058 for (size_t i = 0; i < swapChainImages.size(); i++) {
2059 vkDestroyBuffer(device, uniformBuffers[i], nullptr);
2060 vkFreeMemory(device, uniformBuffersMemory[i], nullptr);
2061 }
2062/*** START OF REFACTORED CODE ***/
2063 }
2064/*** END OF REFACTORED CODE ***/
2065
2066 void cleanupPipeline(GraphicsPipelineInfo& pipeline) {
2067 vkDestroyPipeline(device, pipeline.pipeline, nullptr);
2068 vkDestroyDescriptorPool(device, pipeline.descriptorPool, nullptr);
2069 vkDestroyPipelineLayout(device, pipeline.pipelineLayout, nullptr);
2070 }
2071
2072 void cleanupPipelineBuffers(GraphicsPipelineInfo& pipeline) {
2073 vkDestroyDescriptorSetLayout(device, pipeline.descriptorSetLayout, nullptr);
2074
2075 vkDestroyBuffer(device, pipeline.vertexBuffer, nullptr);
2076 vkFreeMemory(device, pipeline.vertexBufferMemory, nullptr);
2077 vkDestroyBuffer(device, pipeline.indexBuffer, nullptr);
2078 vkFreeMemory(device, pipeline.indexBufferMemory, nullptr);
2079 }
2080
2081 static VKAPI_ATTR VkBool32 VKAPI_CALL debugCallback(
2082 VkDebugUtilsMessageSeverityFlagBitsEXT messageSeverity,
2083 VkDebugUtilsMessageTypeFlagsEXT messageType,
2084 const VkDebugUtilsMessengerCallbackDataEXT* pCallbackData,
2085 void* pUserData) {
2086 cerr << "validation layer: " << pCallbackData->pMessage << endl;
2087
2088 return VK_FALSE;
2089 }
2090
2091 static vector<char> readFile(const string& filename) {
2092 ifstream file(filename, ios::ate | ios::binary);
2093
2094 if (!file.is_open()) {
2095 throw runtime_error("failed to open file!");
2096 }
2097
2098 size_t fileSize = (size_t) file.tellg();
2099 vector<char> buffer(fileSize);
2100
2101 file.seekg(0);
2102 file.read(buffer.data(), fileSize);
2103
2104 file.close();
2105
2106 return buffer;
2107 }
2108};
2109
2110/*** START OF REFACTORED CODE ***/
2111int main(int argc, char* argv[]) {
2112
2113#ifdef NDEBUG
2114 cout << "DEBUGGING IS OFF" << endl;
2115#else
2116 cout << "DEBUGGING IS ON" << endl;
2117#endif
2118
2119 cout << "Starting Vulkan game..." << endl;
2120
2121 VulkanGame game;
2122
2123 try {
2124 game.run();
2125 } catch (const exception& e) {
2126 cerr << e.what() << endl;
2127 return EXIT_FAILURE;
2128 }
2129
2130 cout << "Finished running the game" << endl;
2131
2132 return EXIT_SUCCESS;
2133}
2134/*** END OF REFACTORED CODE ***/
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