[PD] speed

[marius schebella]

hello cyrille,
drawing squares now, I attach the pd-patch (msgltest2-test.pd) and the 
lua script (msgltest2.lua) that I used. with lua I can draw more than 
10000 squares, with gem around 2000. I don't know exactly why lua is faster.
maybe because in lua, I create one long gl command list (from glbegin to 
glend) and in gem I trigger gemhead everytime I draw a square. is there 
a way to make the gem part faster?
marius.

cyrille henry wrote:
> hello,
> 
> i have not try the test patch, but the curve object is very ineficient 
> to draw line.
> can you try to draw as many square as possible in gem, and with luagl?
> 
> this 10:1 speed factor is surprising.
> 
> cyrille
> 
> 
> marius schebella a écrit :
>> hey frank/list,
>> somehow I managed to get luagl working. (I did a fink install lua51 
>> and lua51-dev and the rest (luagl/opengl) was still there from one of 
>> my earlier attempts - I am still trying to reconstruct the 
>> installation process...
>> running the patch, that you posted some time ago (with the colored 
>> lines) I get an amazing speed advantage for lua. is this a valid 
>> performance test? because with lua I can draw 20000 lines at a cpu 
>> usage of 80%, the gem part eats up 80% already with 2000 lines (10:1).
>> cheers,
>> marius.
>>
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> 

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