Tony Barbour | 2f18b29 | 2016-02-25 15:44:10 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2016 Google, Inc. |
| 3 | * |
| 4 | * Permission is hereby granted, free of charge, to any person obtaining a |
| 5 | * copy of this software and associated documentation files (the "Software"), |
| 6 | * to deal in the Software without restriction, including without limitation |
| 7 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| 8 | * and/or sell copies of the Software, and to permit persons to whom the |
| 9 | * Software is furnished to do so, subject to the following conditions: |
| 10 | * |
| 11 | * The above copyright notice and this permission notice shall be included |
| 12 | * in all copies or substantial portions of the Software. |
| 13 | * |
| 14 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 15 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 16 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| 17 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| 18 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
| 19 | * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER |
| 20 | * DEALINGS IN THE SOFTWARE. |
| 21 | */ |
| 22 | |
| 23 | #include <cassert> |
| 24 | #include <array> |
| 25 | #include <iostream> |
| 26 | #include <string> |
| 27 | #include <sstream> |
| 28 | #include <set> |
| 29 | #include "Helpers.h" |
| 30 | #include "Shell.h" |
| 31 | #include "Game.h" |
| 32 | |
| 33 | Shell::Shell(Game &game) |
| 34 | : game_(game), settings_(game.settings()), ctx_(), |
| 35 | game_tick_(1.0f / settings_.ticks_per_second), game_time_(game_tick_) |
| 36 | { |
| 37 | // require generic WSI extensions |
| 38 | instance_extensions_.push_back(VK_KHR_SURFACE_EXTENSION_NAME); |
| 39 | device_extensions_.push_back(VK_KHR_SWAPCHAIN_EXTENSION_NAME); |
| 40 | |
| 41 | // require "standard" validation layers |
| 42 | if (settings_.validate) { |
| 43 | device_layers_.push_back("VK_LAYER_LUNARG_standard_validation"); |
| 44 | instance_layers_.push_back("VK_LAYER_LUNARG_standard_validation"); |
| 45 | |
| 46 | instance_extensions_.push_back(VK_EXT_DEBUG_REPORT_EXTENSION_NAME); |
| 47 | } |
| 48 | } |
| 49 | |
| 50 | void Shell::log(LogPriority priority, const char *msg) |
| 51 | { |
| 52 | std::ostream &st = (priority >= LOG_ERR) ? std::cerr : std::cout; |
| 53 | st << msg << "\n"; |
| 54 | } |
| 55 | |
| 56 | void Shell::init_vk() |
| 57 | { |
| 58 | vk::init_dispatch_table_top(load_vk()); |
| 59 | |
| 60 | init_instance(); |
| 61 | vk::init_dispatch_table_middle(ctx_.instance, false); |
| 62 | |
| 63 | init_debug_report(); |
| 64 | init_physical_dev(); |
| 65 | } |
| 66 | |
| 67 | void Shell::cleanup_vk() |
| 68 | { |
| 69 | if (settings_.validate) |
| 70 | vk::DestroyDebugReportCallbackEXT(ctx_.instance, ctx_.debug_report, nullptr); |
| 71 | |
| 72 | vk::DestroyInstance(ctx_.instance, nullptr); |
| 73 | } |
| 74 | |
| 75 | bool Shell::debug_report_callback(VkDebugReportFlagsEXT flags, |
| 76 | VkDebugReportObjectTypeEXT obj_type, |
| 77 | uint64_t object, |
| 78 | size_t location, |
| 79 | int32_t msg_code, |
| 80 | const char *layer_prefix, |
| 81 | const char *msg) |
| 82 | { |
| 83 | LogPriority prio = LOG_WARN; |
| 84 | if (flags & VK_DEBUG_REPORT_ERROR_BIT_EXT) |
| 85 | prio = LOG_ERR; |
| 86 | else if (flags & (VK_DEBUG_REPORT_WARNING_BIT_EXT | VK_DEBUG_REPORT_PERFORMANCE_WARNING_BIT_EXT)) |
| 87 | prio = LOG_WARN; |
| 88 | else if (flags & VK_DEBUG_REPORT_INFORMATION_BIT_EXT) |
| 89 | prio = LOG_INFO; |
| 90 | else if (flags & VK_DEBUG_REPORT_DEBUG_BIT_EXT) |
| 91 | prio = LOG_DEBUG; |
| 92 | |
| 93 | std::stringstream ss; |
| 94 | ss << layer_prefix << ": " << msg; |
| 95 | |
| 96 | log(prio, ss.str().c_str()); |
| 97 | |
| 98 | return false; |
| 99 | } |
| 100 | |
| 101 | void Shell::assert_all_instance_layers() const |
| 102 | { |
| 103 | // enumerate instance layer |
| 104 | std::vector<VkLayerProperties> layers; |
| 105 | vk::enumerate(layers); |
| 106 | |
| 107 | std::set<std::string> layer_names; |
| 108 | for (const auto &layer : layers) |
| 109 | layer_names.insert(layer.layerName); |
| 110 | |
| 111 | // all listed instance layers are required |
| 112 | for (const auto &name : instance_layers_) { |
| 113 | if (layer_names.find(name) == layer_names.end()) { |
| 114 | std::stringstream ss; |
| 115 | ss << "instance layer " << name << " is missing"; |
| 116 | throw std::runtime_error(ss.str()); |
| 117 | } |
| 118 | } |
| 119 | } |
| 120 | |
| 121 | void Shell::assert_all_instance_extensions() const |
| 122 | { |
| 123 | // enumerate instance extensions |
| 124 | std::vector<VkExtensionProperties> exts; |
| 125 | vk::enumerate(nullptr, exts); |
| 126 | |
| 127 | std::set<std::string> ext_names; |
| 128 | for (const auto &ext : exts) |
| 129 | ext_names.insert(ext.extensionName); |
| 130 | |
| 131 | // all listed instance extensions are required |
| 132 | for (const auto &name : instance_extensions_) { |
| 133 | if (ext_names.find(name) == ext_names.end()) { |
| 134 | std::stringstream ss; |
| 135 | ss << "instance extension " << name << " is missing"; |
| 136 | throw std::runtime_error(ss.str()); |
| 137 | } |
| 138 | } |
| 139 | } |
| 140 | |
| 141 | bool Shell::has_all_device_layers(VkPhysicalDevice phy) const |
| 142 | { |
| 143 | // enumerate device layers |
| 144 | std::vector<VkLayerProperties> layers; |
| 145 | vk::enumerate(phy, layers); |
| 146 | |
| 147 | std::set<std::string> layer_names; |
| 148 | for (const auto &layer : layers) |
| 149 | layer_names.insert(layer.layerName); |
| 150 | |
| 151 | // all listed device layers are required |
| 152 | for (const auto &name : device_layers_) { |
| 153 | if (layer_names.find(name) == layer_names.end()) |
| 154 | return false; |
| 155 | } |
| 156 | |
| 157 | return true; |
| 158 | } |
| 159 | |
| 160 | bool Shell::has_all_device_extensions(VkPhysicalDevice phy) const |
| 161 | { |
| 162 | // enumerate device extensions |
| 163 | std::vector<VkExtensionProperties> exts; |
| 164 | vk::enumerate(phy, nullptr, exts); |
| 165 | |
| 166 | std::set<std::string> ext_names; |
| 167 | for (const auto &ext : exts) |
| 168 | ext_names.insert(ext.extensionName); |
| 169 | |
| 170 | // all listed device extensions are required |
| 171 | for (const auto &name : device_extensions_) { |
| 172 | if (ext_names.find(name) == ext_names.end()) |
| 173 | return false; |
| 174 | } |
| 175 | |
| 176 | return true; |
| 177 | } |
| 178 | |
| 179 | void Shell::init_instance() |
| 180 | { |
| 181 | assert_all_instance_layers(); |
| 182 | assert_all_instance_extensions(); |
| 183 | |
| 184 | VkApplicationInfo app_info = {}; |
| 185 | app_info.sType = VK_STRUCTURE_TYPE_APPLICATION_INFO; |
| 186 | app_info.pApplicationName = settings_.name.c_str(); |
| 187 | app_info.applicationVersion = 0; |
Jon Ashburn | d3995c9 | 2016-03-22 13:57:46 -0600 | [diff] [blame] | 188 | app_info.apiVersion = VK_API_VERSION_1_0; |
Tony Barbour | 2f18b29 | 2016-02-25 15:44:10 -0700 | [diff] [blame] | 189 | |
| 190 | VkInstanceCreateInfo instance_info = {}; |
| 191 | instance_info.sType = VK_STRUCTURE_TYPE_INSTANCE_CREATE_INFO; |
| 192 | instance_info.pApplicationInfo = &app_info; |
| 193 | instance_info.enabledLayerCount = static_cast<uint32_t>(instance_layers_.size()); |
| 194 | instance_info.ppEnabledLayerNames = instance_layers_.data(); |
| 195 | instance_info.enabledExtensionCount = static_cast<uint32_t>(instance_extensions_.size()); |
| 196 | instance_info.ppEnabledExtensionNames = instance_extensions_.data(); |
| 197 | |
| 198 | vk::assert_success(vk::CreateInstance(&instance_info, nullptr, &ctx_.instance)); |
| 199 | } |
| 200 | |
| 201 | void Shell::init_debug_report() |
| 202 | { |
| 203 | if (!settings_.validate) |
| 204 | return; |
| 205 | |
| 206 | VkDebugReportCallbackCreateInfoEXT debug_report_info = {}; |
| 207 | debug_report_info.sType = VK_STRUCTURE_TYPE_DEBUG_REPORT_CREATE_INFO_EXT; |
| 208 | |
| 209 | debug_report_info.flags = VK_DEBUG_REPORT_WARNING_BIT_EXT | |
| 210 | VK_DEBUG_REPORT_PERFORMANCE_WARNING_BIT_EXT | |
| 211 | VK_DEBUG_REPORT_ERROR_BIT_EXT; |
| 212 | if (settings_.validate_verbose) { |
| 213 | debug_report_info.flags = VK_DEBUG_REPORT_INFORMATION_BIT_EXT | |
| 214 | VK_DEBUG_REPORT_DEBUG_BIT_EXT; |
| 215 | } |
| 216 | |
| 217 | debug_report_info.pfnCallback = debug_report_callback; |
| 218 | debug_report_info.pUserData = reinterpret_cast<void *>(this); |
| 219 | |
| 220 | vk::assert_success(vk::CreateDebugReportCallbackEXT(ctx_.instance, |
| 221 | &debug_report_info, nullptr, &ctx_.debug_report)); |
| 222 | } |
| 223 | |
| 224 | void Shell::init_physical_dev() |
| 225 | { |
| 226 | // enumerate physical devices |
| 227 | std::vector<VkPhysicalDevice> phys; |
| 228 | vk::assert_success(vk::enumerate(ctx_.instance, phys)); |
| 229 | |
| 230 | ctx_.physical_dev = VK_NULL_HANDLE; |
| 231 | for (auto phy : phys) { |
| 232 | if (!has_all_device_layers(phy) || !has_all_device_extensions(phy)) |
| 233 | continue; |
| 234 | |
| 235 | // get queue properties |
| 236 | std::vector<VkQueueFamilyProperties> queues; |
| 237 | vk::get(phy, queues); |
| 238 | |
| 239 | int game_queue_family = -1, present_queue_family = -1; |
| 240 | for (uint32_t i = 0; i < queues.size(); i++) { |
| 241 | const VkQueueFamilyProperties &q = queues[i]; |
| 242 | |
| 243 | // requires only GRAPHICS for game queues |
| 244 | const VkFlags game_queue_flags = VK_QUEUE_GRAPHICS_BIT; |
| 245 | if (game_queue_family < 0 && |
| 246 | (q.queueFlags & game_queue_flags) == game_queue_flags) |
| 247 | game_queue_family = i; |
| 248 | |
| 249 | // present queue must support the surface |
| 250 | if (present_queue_family < 0 && can_present(phy, i)) |
| 251 | present_queue_family = i; |
| 252 | |
| 253 | if (game_queue_family >= 0 && present_queue_family >= 0) |
| 254 | break; |
| 255 | } |
| 256 | |
| 257 | if (game_queue_family >= 0 && present_queue_family >= 0) { |
| 258 | ctx_.physical_dev = phy; |
| 259 | ctx_.game_queue_family = game_queue_family; |
| 260 | ctx_.present_queue_family = present_queue_family; |
| 261 | break; |
| 262 | } |
| 263 | } |
| 264 | |
| 265 | if (ctx_.physical_dev == VK_NULL_HANDLE) |
| 266 | throw std::runtime_error("failed to find any capable Vulkan physical device"); |
| 267 | } |
| 268 | |
| 269 | void Shell::create_context() |
| 270 | { |
| 271 | create_dev(); |
| 272 | vk::init_dispatch_table_bottom(ctx_.instance, ctx_.dev); |
| 273 | |
| 274 | vk::GetDeviceQueue(ctx_.dev, ctx_.game_queue_family, 0, &ctx_.game_queue); |
| 275 | vk::GetDeviceQueue(ctx_.dev, ctx_.present_queue_family, 0, &ctx_.present_queue); |
| 276 | |
| 277 | create_back_buffers(); |
| 278 | |
| 279 | // initialize ctx_.{surface,format} before attach_shell |
| 280 | create_swapchain(); |
| 281 | |
| 282 | game_.attach_shell(*this); |
| 283 | } |
| 284 | |
| 285 | void Shell::destroy_context() |
| 286 | { |
| 287 | if (ctx_.dev == VK_NULL_HANDLE) |
| 288 | return; |
| 289 | |
| 290 | vk::DeviceWaitIdle(ctx_.dev); |
| 291 | |
| 292 | destroy_swapchain(); |
| 293 | |
| 294 | game_.detach_shell(); |
| 295 | |
| 296 | destroy_back_buffers(); |
| 297 | |
| 298 | ctx_.game_queue = VK_NULL_HANDLE; |
| 299 | ctx_.present_queue = VK_NULL_HANDLE; |
| 300 | |
| 301 | vk::DestroyDevice(ctx_.dev, nullptr); |
| 302 | ctx_.dev = VK_NULL_HANDLE; |
| 303 | } |
| 304 | |
| 305 | void Shell::create_dev() |
| 306 | { |
| 307 | VkDeviceCreateInfo dev_info = {}; |
| 308 | dev_info.sType = VK_STRUCTURE_TYPE_DEVICE_CREATE_INFO; |
| 309 | |
| 310 | const std::vector<float> queue_priorities(settings_.queue_count, 0.0f); |
| 311 | std::array<VkDeviceQueueCreateInfo, 2> queue_info = {}; |
| 312 | queue_info[0].sType = VK_STRUCTURE_TYPE_DEVICE_QUEUE_CREATE_INFO; |
| 313 | queue_info[0].queueFamilyIndex = ctx_.game_queue_family; |
| 314 | queue_info[0].queueCount = settings_.queue_count; |
| 315 | queue_info[0].pQueuePriorities = queue_priorities.data(); |
| 316 | |
| 317 | if (ctx_.game_queue_family != ctx_.present_queue_family) { |
| 318 | queue_info[1].sType = VK_STRUCTURE_TYPE_DEVICE_QUEUE_CREATE_INFO; |
| 319 | queue_info[1].queueFamilyIndex = ctx_.present_queue_family; |
| 320 | queue_info[1].queueCount = 1; |
| 321 | queue_info[1].pQueuePriorities = queue_priorities.data(); |
| 322 | |
| 323 | dev_info.queueCreateInfoCount = 2; |
| 324 | } else { |
| 325 | dev_info.queueCreateInfoCount = 1; |
| 326 | } |
| 327 | |
| 328 | dev_info.pQueueCreateInfos = queue_info.data(); |
| 329 | |
| 330 | dev_info.enabledLayerCount = static_cast<uint32_t>(device_layers_.size()); |
| 331 | dev_info.ppEnabledLayerNames = device_layers_.data(); |
| 332 | dev_info.enabledExtensionCount = static_cast<uint32_t>(device_extensions_.size()); |
| 333 | dev_info.ppEnabledExtensionNames = device_extensions_.data(); |
| 334 | |
| 335 | // disable all features |
| 336 | VkPhysicalDeviceFeatures features = {}; |
| 337 | dev_info.pEnabledFeatures = &features; |
| 338 | |
| 339 | vk::assert_success(vk::CreateDevice(ctx_.physical_dev, &dev_info, nullptr, &ctx_.dev)); |
| 340 | } |
| 341 | |
| 342 | void Shell::create_back_buffers() |
| 343 | { |
| 344 | VkSemaphoreCreateInfo sem_info = {}; |
| 345 | sem_info.sType = VK_STRUCTURE_TYPE_SEMAPHORE_CREATE_INFO; |
| 346 | |
| 347 | VkFenceCreateInfo fence_info = {}; |
| 348 | fence_info.sType = VK_STRUCTURE_TYPE_FENCE_CREATE_INFO; |
| 349 | fence_info.flags = VK_FENCE_CREATE_SIGNALED_BIT; |
| 350 | |
| 351 | // BackBuffer is used to track which swapchain image and its associated |
| 352 | // sync primitives are busy. Having more BackBuffer's than swapchain |
| 353 | // images may allows us to replace CPU wait on present_fence by GPU wait |
| 354 | // on acquire_semaphore. |
| 355 | const int count = settings_.back_buffer_count + 1; |
| 356 | for (int i = 0; i < count; i++) { |
| 357 | BackBuffer buf = {}; |
| 358 | vk::assert_success(vk::CreateSemaphore(ctx_.dev, &sem_info, nullptr, &buf.acquire_semaphore)); |
| 359 | vk::assert_success(vk::CreateSemaphore(ctx_.dev, &sem_info, nullptr, &buf.render_semaphore)); |
| 360 | vk::assert_success(vk::CreateFence(ctx_.dev, &fence_info, nullptr, &buf.present_fence)); |
| 361 | |
| 362 | ctx_.back_buffers.push(buf); |
| 363 | } |
| 364 | } |
| 365 | |
| 366 | void Shell::destroy_back_buffers() |
| 367 | { |
| 368 | while (!ctx_.back_buffers.empty()) { |
| 369 | const auto &buf = ctx_.back_buffers.front(); |
| 370 | |
| 371 | vk::DestroySemaphore(ctx_.dev, buf.acquire_semaphore, nullptr); |
| 372 | vk::DestroySemaphore(ctx_.dev, buf.render_semaphore, nullptr); |
| 373 | vk::DestroyFence(ctx_.dev, buf.present_fence, nullptr); |
| 374 | |
| 375 | ctx_.back_buffers.pop(); |
| 376 | } |
| 377 | } |
| 378 | |
| 379 | void Shell::create_swapchain() |
| 380 | { |
| 381 | ctx_.surface = create_surface(ctx_.instance); |
| 382 | |
| 383 | VkBool32 supported; |
| 384 | vk::assert_success(vk::GetPhysicalDeviceSurfaceSupportKHR(ctx_.physical_dev, |
| 385 | ctx_.present_queue_family, ctx_.surface, &supported)); |
| 386 | // this should be guaranteed by the platform-specific can_present call |
| 387 | assert(supported); |
| 388 | |
| 389 | std::vector<VkSurfaceFormatKHR> formats; |
| 390 | vk::get(ctx_.physical_dev, ctx_.surface, formats); |
| 391 | ctx_.format = formats[0]; |
| 392 | |
| 393 | // defer to resize_swapchain() |
| 394 | ctx_.swapchain = VK_NULL_HANDLE; |
| 395 | ctx_.extent.width = (uint32_t) -1; |
| 396 | ctx_.extent.height = (uint32_t) -1; |
| 397 | } |
| 398 | |
| 399 | void Shell::destroy_swapchain() |
| 400 | { |
| 401 | if (ctx_.swapchain != VK_NULL_HANDLE) { |
| 402 | game_.detach_swapchain(); |
| 403 | |
| 404 | vk::DestroySwapchainKHR(ctx_.dev, ctx_.swapchain, nullptr); |
| 405 | ctx_.swapchain = VK_NULL_HANDLE; |
| 406 | } |
| 407 | |
| 408 | vk::DestroySurfaceKHR(ctx_.instance, ctx_.surface, nullptr); |
| 409 | ctx_.surface = VK_NULL_HANDLE; |
| 410 | } |
| 411 | |
| 412 | void Shell::resize_swapchain(uint32_t width_hint, uint32_t height_hint) |
| 413 | { |
| 414 | VkSurfaceCapabilitiesKHR caps; |
| 415 | vk::assert_success(vk::GetPhysicalDeviceSurfaceCapabilitiesKHR(ctx_.physical_dev, |
| 416 | ctx_.surface, &caps)); |
| 417 | |
| 418 | VkExtent2D extent = caps.currentExtent; |
| 419 | // use the hints |
| 420 | if (extent.width == (uint32_t) -1) { |
| 421 | extent.width = width_hint; |
| 422 | extent.height = height_hint; |
| 423 | } |
| 424 | // clamp width; to protect us from broken hints? |
| 425 | if (extent.width < caps.minImageExtent.width) |
| 426 | extent.width = caps.minImageExtent.width; |
| 427 | else if (extent.width > caps.maxImageExtent.width) |
| 428 | extent.width = caps.maxImageExtent.width; |
| 429 | // clamp height |
| 430 | if (extent.height < caps.minImageExtent.height) |
| 431 | extent.height = caps.minImageExtent.height; |
| 432 | else if (extent.height > caps.maxImageExtent.height) |
| 433 | extent.height = caps.maxImageExtent.height; |
| 434 | |
| 435 | if (ctx_.extent.width == extent.width && ctx_.extent.height == extent.height) |
| 436 | return; |
| 437 | |
| 438 | uint32_t image_count = settings_.back_buffer_count; |
| 439 | if (image_count < caps.minImageCount) |
| 440 | image_count = caps.minImageCount; |
| 441 | else if (image_count > caps.maxImageCount) |
| 442 | image_count = caps.maxImageCount; |
| 443 | |
| 444 | assert(caps.supportedUsageFlags & VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT); |
| 445 | assert(caps.supportedTransforms & caps.currentTransform); |
| 446 | assert(caps.supportedCompositeAlpha & (VK_COMPOSITE_ALPHA_OPAQUE_BIT_KHR | |
| 447 | VK_COMPOSITE_ALPHA_INHERIT_BIT_KHR)); |
| 448 | VkCompositeAlphaFlagBitsKHR composite_alpha = |
| 449 | (caps.supportedCompositeAlpha & VK_COMPOSITE_ALPHA_INHERIT_BIT_KHR) ? |
| 450 | VK_COMPOSITE_ALPHA_INHERIT_BIT_KHR : VK_COMPOSITE_ALPHA_OPAQUE_BIT_KHR; |
| 451 | |
| 452 | std::vector<VkPresentModeKHR> modes; |
| 453 | vk::get(ctx_.physical_dev, ctx_.surface, modes); |
| 454 | |
| 455 | // FIFO is the only mode universally supported |
| 456 | VkPresentModeKHR mode = VK_PRESENT_MODE_FIFO_KHR; |
| 457 | for (auto m : modes) { |
| 458 | if ((settings_.vsync && m == VK_PRESENT_MODE_MAILBOX_KHR) || |
| 459 | (!settings_.vsync && m == VK_PRESENT_MODE_IMMEDIATE_KHR)) { |
| 460 | mode = m; |
| 461 | break; |
| 462 | } |
| 463 | } |
| 464 | |
| 465 | VkSwapchainCreateInfoKHR swapchain_info = {}; |
| 466 | swapchain_info.sType = VK_STRUCTURE_TYPE_SWAPCHAIN_CREATE_INFO_KHR; |
| 467 | swapchain_info.surface = ctx_.surface; |
| 468 | swapchain_info.minImageCount = image_count; |
| 469 | swapchain_info.imageFormat = ctx_.format.format; |
| 470 | swapchain_info.imageColorSpace = ctx_.format.colorSpace; |
| 471 | swapchain_info.imageExtent = extent; |
| 472 | swapchain_info.imageArrayLayers = 1; |
| 473 | swapchain_info.imageUsage = VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT; |
| 474 | |
| 475 | std::vector<uint32_t> queue_families(1, ctx_.game_queue_family); |
| 476 | if (ctx_.game_queue_family != ctx_.present_queue_family) { |
| 477 | queue_families.push_back(ctx_.present_queue_family); |
| 478 | |
| 479 | swapchain_info.imageSharingMode = VK_SHARING_MODE_CONCURRENT; |
| 480 | swapchain_info.queueFamilyIndexCount = (uint32_t)queue_families.size(); |
| 481 | swapchain_info.pQueueFamilyIndices = queue_families.data(); |
| 482 | } else { |
| 483 | swapchain_info.imageSharingMode = VK_SHARING_MODE_EXCLUSIVE; |
| 484 | } |
| 485 | |
| 486 | swapchain_info.preTransform = caps.currentTransform;; |
| 487 | swapchain_info.compositeAlpha = composite_alpha; |
| 488 | swapchain_info.presentMode = mode; |
| 489 | swapchain_info.clipped = true; |
| 490 | swapchain_info.oldSwapchain = ctx_.swapchain; |
| 491 | |
| 492 | vk::assert_success(vk::CreateSwapchainKHR(ctx_.dev, &swapchain_info, nullptr, &ctx_.swapchain)); |
| 493 | ctx_.extent = extent; |
| 494 | |
| 495 | // destroy the old swapchain |
| 496 | if (swapchain_info.oldSwapchain != VK_NULL_HANDLE) { |
| 497 | game_.detach_swapchain(); |
| 498 | |
| 499 | vk::DeviceWaitIdle(ctx_.dev); |
| 500 | vk::DestroySwapchainKHR(ctx_.dev, swapchain_info.oldSwapchain, nullptr); |
| 501 | } |
| 502 | |
| 503 | game_.attach_swapchain(); |
| 504 | } |
| 505 | |
| 506 | void Shell::add_game_time(float time) |
| 507 | { |
| 508 | int max_ticks = 3; |
| 509 | |
| 510 | if (!settings_.no_tick) |
| 511 | game_time_ += time; |
| 512 | |
| 513 | while (game_time_ >= game_tick_ && max_ticks--) { |
| 514 | game_.on_tick(); |
| 515 | game_time_ -= game_tick_; |
| 516 | } |
| 517 | } |
| 518 | |
| 519 | void Shell::acquire_back_buffer() |
| 520 | { |
| 521 | // acquire just once when not presenting |
| 522 | if (settings_.no_present && |
| 523 | ctx_.acquired_back_buffer.acquire_semaphore != VK_NULL_HANDLE) |
| 524 | return; |
| 525 | |
| 526 | auto &buf = ctx_.back_buffers.front(); |
| 527 | |
| 528 | // wait until acquire and render semaphores are waited/unsignaled |
| 529 | vk::assert_success(vk::WaitForFences(ctx_.dev, 1, &buf.present_fence, |
| 530 | true, UINT64_MAX)); |
| 531 | // reset the fence |
| 532 | vk::assert_success(vk::ResetFences(ctx_.dev, 1, &buf.present_fence)); |
| 533 | |
| 534 | vk::assert_success(vk::AcquireNextImageKHR(ctx_.dev, ctx_.swapchain, |
| 535 | UINT64_MAX, buf.acquire_semaphore, VK_NULL_HANDLE, |
| 536 | &buf.image_index)); |
| 537 | |
| 538 | ctx_.acquired_back_buffer = buf; |
| 539 | ctx_.back_buffers.pop(); |
| 540 | } |
| 541 | |
| 542 | void Shell::present_back_buffer() |
| 543 | { |
| 544 | const auto &buf = ctx_.acquired_back_buffer; |
| 545 | |
| 546 | if (!settings_.no_render) |
| 547 | game_.on_frame(game_time_ / game_tick_); |
| 548 | |
| 549 | if (settings_.no_present) { |
| 550 | fake_present(); |
| 551 | return; |
| 552 | } |
| 553 | |
| 554 | VkPresentInfoKHR present_info = {}; |
| 555 | present_info.sType = VK_STRUCTURE_TYPE_PRESENT_INFO_KHR; |
| 556 | present_info.waitSemaphoreCount = 1; |
| 557 | present_info.pWaitSemaphores = (settings_.no_render) ? |
| 558 | &buf.acquire_semaphore : &buf.render_semaphore; |
| 559 | present_info.swapchainCount = 1; |
| 560 | present_info.pSwapchains = &ctx_.swapchain; |
| 561 | present_info.pImageIndices = &buf.image_index; |
| 562 | |
| 563 | vk::assert_success(vk::QueuePresentKHR(ctx_.present_queue, &present_info)); |
| 564 | |
| 565 | vk::assert_success(vk::QueueSubmit(ctx_.present_queue, 0, nullptr, buf.present_fence)); |
| 566 | ctx_.back_buffers.push(buf); |
| 567 | } |
| 568 | |
| 569 | void Shell::fake_present() |
| 570 | { |
| 571 | const auto &buf = ctx_.acquired_back_buffer; |
| 572 | |
| 573 | assert(settings_.no_present); |
| 574 | |
| 575 | // wait render semaphore and signal acquire semaphore |
| 576 | if (!settings_.no_render) { |
| 577 | VkPipelineStageFlags stage = VK_PIPELINE_STAGE_BOTTOM_OF_PIPE_BIT; |
| 578 | VkSubmitInfo submit_info = {}; |
| 579 | submit_info.sType = VK_STRUCTURE_TYPE_SUBMIT_INFO; |
| 580 | submit_info.waitSemaphoreCount = 1; |
| 581 | submit_info.pWaitSemaphores = &buf.render_semaphore; |
| 582 | submit_info.pWaitDstStageMask = &stage; |
| 583 | submit_info.signalSemaphoreCount = 1; |
| 584 | submit_info.pSignalSemaphores = &buf.acquire_semaphore; |
| 585 | vk::assert_success(vk::QueueSubmit(ctx_.game_queue, 1, &submit_info, VK_NULL_HANDLE)); |
| 586 | } |
| 587 | |
| 588 | // push the buffer back just once for Shell::cleanup_vk |
| 589 | if (buf.acquire_semaphore != ctx_.back_buffers.back().acquire_semaphore) |
| 590 | ctx_.back_buffers.push(buf); |
| 591 | } |