Method createInstance

hello-vulkan/app/src/main/cpp/hellovk.h:685–728

}

void HelloVK::createInstance() {
  assert(!enableValidationLayers ||
         checkValidationLayerSupport());  // validation layers requested, but
                                          // not available!
  auto requiredExtensions = getRequiredExtensions(enableValidationLayers);

  VkApplicationInfo appInfo{};
  appInfo.sType = VK_STRUCTURE_TYPE_APPLICATION_INFO;
  appInfo.pApplicationName = "Hello Triangle";
  appInfo.applicationVersion = VK_MAKE_VERSION(1, 0, 0);
  appInfo.pEngineName = "No Engine";
  appInfo.engineVersion = VK_MAKE_VERSION(1, 0, 0);
  appInfo.apiVersion = VK_API_VERSION_1_0;

  VkInstanceCreateInfo createInfo{};
  createInfo.sType = VK_STRUCTURE_TYPE_INSTANCE_CREATE_INFO;
  createInfo.pApplicationInfo = &appInfo;
  createInfo.enabledExtensionCount = (uint32_t)requiredExtensions.size();
  createInfo.ppEnabledExtensionNames = requiredExtensions.data();
  createInfo.pApplicationInfo = &appInfo;

  if (enableValidationLayers) {
    VkDebugUtilsMessengerCreateInfoEXT debugCreateInfo{};
    createInfo.enabledLayerCount =
        static_cast<uint32_t>(validationLayers.size());
    createInfo.ppEnabledLayerNames = validationLayers.data();
    populateDebugMessengerCreateInfo(debugCreateInfo);
    createInfo.pNext = (VkDebugUtilsMessengerCreateInfoEXT*)&debugCreateInfo;
  } else {
    createInfo.enabledLayerCount = 0;
    createInfo.pNext = nullptr;
  }
  VK_CHECK(vkCreateInstance(&createInfo, nullptr, &instance));

  uint32_t extensionCount = 0;
  vkEnumerateInstanceExtensionProperties(nullptr, &extensionCount, nullptr);
  std::vector<VkExtensionProperties> extensions(extensionCount);
  vkEnumerateInstanceExtensionProperties(nullptr, &extensionCount,
                                         extensions.data());
  LOGI("available extensions");
  for (const auto& extension : extensions) {
    LOGI("\t %s", extension.extensionName);
  }
}

/*
 * createSurface can only be called after the android ecosystem has had the