typedef VKAPI_ATTR void (VKAPI_CALL* TrimCommandPoolKHRFunc) (VkDevice device, VkCommandPool commandPool, VkCommandPoolTrimFlagsKHR flags);
typedef VKAPI_ATTR VkResult (VKAPI_CALL* GetPhysicalDeviceSurfaceCapabilities2KHRFunc) (VkPhysicalDevice physicalDevice, const VkPhysicalDeviceSurfaceInfo2KHR* pSurfaceInfo, VkSurfaceCapabilities2KHR* pSurfaceCapabilities);
typedef VKAPI_ATTR VkResult (VKAPI_CALL* GetPhysicalDeviceSurfaceFormats2KHRFunc) (VkPhysicalDevice physicalDevice, const VkPhysicalDeviceSurfaceInfo2KHR* pSurfaceInfo, deUint32* pSurfaceFormatCount, VkSurfaceFormat2KHR* pSurfaceFormats);
+typedef VKAPI_ATTR VkResult (VKAPI_CALL* GetSwapchainStatusKHRFunc) (VkDevice device, VkSwapchainKHR swapchain);
typedef VKAPI_ATTR VkResult (VKAPI_CALL* CreateDebugReportCallbackEXTFunc) (VkInstance instance, const VkDebugReportCallbackCreateInfoEXT* pCreateInfo, const VkAllocationCallbacks* pAllocator, VkDebugReportCallbackEXT* pCallback);
typedef VKAPI_ATTR void (VKAPI_CALL* DestroyDebugReportCallbackEXTFunc) (VkInstance instance, VkDebugReportCallbackEXT callback, const VkAllocationCallbacks* pAllocator);
typedef VKAPI_ATTR void (VKAPI_CALL* DebugReportMessageEXTFunc) (VkInstance instance, VkDebugReportFlagsEXT flags, VkDebugReportObjectTypeEXT objectType, deUint64 object, deUintptr location, deInt32 messageCode, const char* pLayerPrefix, const char* pMessage);