I don't want to use the GL types directly since the OpenGL renderer is not exposes in the rest of the API. I was hoping that realToFrac would be a nop in case it would be identical to an unsafeCoerce.
I guess one could make rules for that, but this tickets makes me wander if that really works: http://hackage.haskell.org/trac/ghc/ticket/1434 On Wed, Sep 30, 2009 at 4:58 PM, Roel van Dijk <[email protected]>wrote: > If you are *really* sure that the runtime representation is the same > you could use usafeCoerce. You could use a small test function for > profiling, something like: > > convertGLfloat :: GLfloat -> Float > convertGLFloat = realToFrac > -- convertGLFloat = unsafeCoerce > > and toggle between the two (assuming you won't get a segmentation fault). > > Another option is to not convert at all but use the GL types > everywhere. Either explicitly or by exploiting polymorphism. >
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