pub type PFN_vkAllocateMemory = unsafe extern "system" fn(device: Device, p_allocate_info: *const MemoryAllocateInfo, p_allocator: *const AllocationCallbacks, p_memory: *mut DeviceMemory) -> Result;
pub type PFN_vkAllocateMemory = unsafe extern "system" fn(device: Device, p_allocate_info: *const MemoryAllocateInfo, p_allocator: *const AllocationCallbacks, p_memory: *mut DeviceMemory) -> Result;