pub type PFN_vkGetPhysicalDeviceVideoFormatPropertiesKHR = unsafe extern "system" fn(physical_device: PhysicalDevice, p_video_format_info: *const PhysicalDeviceVideoFormatInfoKHR, p_video_format_property_count: *mut u32, p_video_format_properties: *mut VideoFormatPropertiesKHR) -> Result;