Function vkGetCalibratedTimestampsEXT 

pub unsafe extern "system" fn vkGetCalibratedTimestampsEXT(
    device: VkDevice,
    timestampCount: u32,
    pTimestampInfos: *const VkCalibratedTimestampInfoKHR,
    pTimestamps: *mut u64,
    pMaxDeviation: *mut u64,
) -> VkResult