[Haskell-cafe] New OpenGL package: efficient way to convert datatypes?

[Peter Verswyvelen]

The newest package seems to require using GLdouble/GLfloat.

What is the most efficient way to convert Double/Float to GLdouble/GLfloat?
I'm currently using realToFrac. But essentially the operation should be a
nop on my machine.

I haven't looked at the core code yet (on Windows, last time I checked, the
ghc-core util did not work, and without it, reading core is even harder)

Thanks,
Peter
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