pub type PFN_vkCreateDevice = unsafe extern "system" fn(physical_device: PhysicalDevice, p_create_info: *const DeviceCreateInfo, p_allocator: *const AllocationCallbacks, p_device: *mut Device) -> Result;
pub type PFN_vkCreateDevice = unsafe extern "system" fn(physical_device: PhysicalDevice, p_create_info: *const DeviceCreateInfo, p_allocator: *const AllocationCallbacks, p_device: *mut Device) -> Result;