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Performance of the new "Source volume"


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#1 Ostap

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Posted 19 June 2012 - 04:39 AM

Did anybody noticed slow performance in the new "Source Volume"?
Perhaps only in my case this is going on?

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#2 rafaelfs

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Posted 19 June 2012 - 09:14 AM

Yes, it can be quite slow. Once I get the source performance I want I generally cache it before running my sims.
I think it's bound to be slow because it generates volumes from geometry and that, depending on the sample distance, can be quite expensive.

Also, you might want to start with a higher sampling distance, and reduce it in steps until you find a good performance/speed compromise.

Not sure what else can be done about it though...

cheers

Edited by rafaelfs, 19 June 2012 - 09:15 AM.

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#3 Netvudu

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Posted 19 June 2012 - 10:24 AM

I don´t think it really is slow. I do think it does a whole lot of things and that comes at a price!! :)

IMHO the importance of proper fluid sourcing can´t never be stressed enough...

Edited by Netvudu, 19 June 2012 - 10:25 AM.


#4 rafaelfs

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Posted 19 June 2012 - 11:36 AM

View PostNetvudu, on 19 June 2012 - 10:24 AM, said:

I don´t think it really is slow. I do think it does a whole lot of things and that comes at a price!! :)

IMHO the importance of proper fluid sourcing can´t never be stressed enough...

Yes, I didn't mean it in a sense of inefficiency... :)
It's actually a great node!
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#5 riviera

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Posted 27 June 2012 - 08:26 AM

View Postrafaelfs, on 19 June 2012 - 11:36 AM, said:

Yes, I didn't mean it in a sense of inefficiency... :)
It's actually a great node!

For one thing, it IS inefficient (and inaccurate) when using with particle fluids, especially if you want to emit fluid from the surface of a geometry. (I ended up creating an own fluid emitter asset). It can also be inaccurate when inheriting attributes from the source geometry (e.g. per-point velocity).




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