load the device level member functions this also sets the private member 'device' to the passed in VkDevice as well as the otional host allocator if a custom allocator is required it must be specified here and cannot be changed throughout the liftime of the device now the DispatchDevice can be used e.g.: auto dd = DispatchDevice( device ); dd.vkDestroyDevice( dd.vkDevice, pAllocator ); convenience functions to omit the first arg and the allocator do exist, see bellow