pub type PFN_vkGetPhysicalDeviceMemoryProperties = unsafe extern "system" fn(_physical_device: PhysicalDevice, _memory_properties: *mut PhysicalDeviceMemoryProperties);pub type PFN_vkGetPhysicalDeviceMemoryProperties = unsafe extern "system" fn(_physical_device: PhysicalDevice, _memory_properties: *mut PhysicalDeviceMemoryProperties);