pub type PFN_vkGetDeviceBufferMemoryRequirements = unsafe extern "system" fn(_device: Device, _info: *const DeviceBufferMemoryRequirements, _memory_requirements: *mut MemoryRequirements2);pub type PFN_vkGetDeviceBufferMemoryRequirements = unsafe extern "system" fn(_device: Device, _info: *const DeviceBufferMemoryRequirements, _memory_requirements: *mut MemoryRequirements2);