[Haskell-cafe] ANN: Elerea, another FRP library

Peter Verswyvelen bugfact at gmail.com
Mon Apr 13 03:45:05 EDT 2009


Interesting. I'm testing it on Window though. You're using Linux? Maybe the
scheduling is different.

2009/4/13 Patai Gergely <patai_gergely at fastmail.fm>

> > seems something is wrong with either your time sampling or performance,
> > because I get rather jerky movement when playing the breakout or the
> > chase demo. did you notice that too?
> No, it was always smooth for me. But I only tried it on 64-bit machines
> and only with ghc-6.10.2.
>
> > at what rate are you sampling? if you are sampling at a lower rate as the
> > video vsync, you might want to perform interpolation between two "logical
> > frames"  as jules bean did in his own reactive planets demo.
> The breakout example has a zero threadDelay in its main loop, because
> that apparently causes a break with the length of a scheduler tick,
> essentially giving an 50 Hz sampling rate. The chase example has no
> delay added at all, and it goes over 2500 fps for me.
>
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