pub type PFN_vkGetSwapchainCounterEXT = unsafe extern "system" fn(device: Device, swapchain: SwapchainKHR, counter: SurfaceCounterFlagsEXT, p_counter_value: *mut u64) -> Result;
pub type PFN_vkGetSwapchainCounterEXT = unsafe extern "system" fn(device: Device, swapchain: SwapchainKHR, counter: SurfaceCounterFlagsEXT, p_counter_value: *mut u64) -> Result;