pub unsafe extern "C" fn vkGetRefreshCycleDurationGOOGLE(
device: VkDevice,
swapchain: VkSwapchainKHR,
pDisplayTimingProperties: *mut VkRefreshCycleDurationGOOGLE,
) -> VkResultpub unsafe extern "C" fn vkGetRefreshCycleDurationGOOGLE(
device: VkDevice,
swapchain: VkSwapchainKHR,
pDisplayTimingProperties: *mut VkRefreshCycleDurationGOOGLE,
) -> VkResult