pub type PFN_vkGetPhysicalDeviceFormatProperties2 = unsafe extern "system" fn(_physical_device: PhysicalDevice, _format: Format, _format_properties: *mut FormatProperties2);pub type PFN_vkGetPhysicalDeviceFormatProperties2 = unsafe extern "system" fn(_physical_device: PhysicalDevice, _format: Format, _format_properties: *mut FormatProperties2);