PowerVR serious problem

[[Unknown]]

The hack I mentioned earlier that made PowerVR use a different and definitely wrong method of alpha testing. Now it uses an alternate method that works on PowerVR (or at least I think it does.) So, at least that's one problem gone.

Unfortunately alpha testing is still, afaik, quite slow on PowerVR. But if you have alpha test disabled you'll definitely get even more graphical glitches.

-[Unknown]