You don't have to be a materialist to be a determinist. Nor do you have to be a determinist if you're a materialist. The beliefs are completely orthogonal.
Indeed not, hence why I named them separately. I'm alluding specifically to the combination here, where the mind is a purely mechanical thing that is a function of its inputs. Which makes a concept like "self-control", as a moral construct, difficult to model, at least in any meaningful way.
