When you look at any items Link holds above his head, there's that neat glosy effect. That is likely achieved by an alpha channel. Since heart containers fall into this catagory, I can only assume either they will have their own alpha applied, or use some generic alpha texture which is applied to every model of this type. I guess the best bet is to just try getting it in game and see how it works.
Nice work, though. Be interesting to see how it works.
Nice work, though. Be interesting to see how it works.