[Haskell-cafe] unsafeInterleaveIO and OpenGL

[Peter Verswyvelen]

> Sounds reasonable. 'unsafeInterleaveIO' defers computation of 'vp' 
> until it is actually needed. At this time the viewport might have 
> changed.
That sound reasonable indeed, but the viewport does not change and the 
values I get are really random. I'll try to make minimal example to 
demonstrate the problem.

Thanks,
Peter