On Dec 28, 2014, at 9:51 PM, Darren Cruse wrote: > One thing I can see is that on-draw is called for every on-tick on all three > platforms btw. > > And even in cases where the program is idling and on-tick has simply returned > the world state it was given unmodified. > > Is that normal I wonder? Part of me thought that since to-draw is a function > of the world state, and the world state hasn't changed, that it would *not* > call to-draw in that case.
I experimented with this 'optimization' and, if I recall correctly, it didn't make much of a difference and got in the way of imperative world programs. So I took it out. Mea culpa, I should have commented on this experiment inside the code. > (but it calls to-draw for every on-tick even on the Windows machine which is > using only 6% cpu - so maybe I'm wrong to look to that as the problem) My Mac-based experiments suggest that this call is not the cause of performance problems. ;; --- Could you post the code somewhere so we can experiment with it? Thanks -- Matthias
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