The problem I was having was because I tested only with Yan's code which I assumed was the same as the rest but it was not for some reason
I don't know what's happening there, it *should* be exactly the same as we've all [edit]
Tell a lie...I seem to have introduced a spurious LoadIdentity() into the GL code. It is, however, after the matrix is switched to model view so I don't think it should've broken anything?
Were you only having problems with GL?
[/edit]
[edit]
Gone back and removed the extra LoadIdentity() from all instances of the proj matrix code I could find.
[/edit]