Subdivision and displacement speedups

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OnoSendai
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Subdivision and displacement speedups

Post by OnoSendai » Wed Sep 23, 2015 2:55 am

Hi all,
I've been doing a bit of work on speeding up the subdivision and displacement code. Actually I have mostly rewritten the subdivision code.

Some results:
Old: head_test, Indigo v3.8.26, num subdivs 4, resulting num quads=2263552, time taken: 1.989 s
New: head_test, Indigo 4.0.x, num subdivs 4: resulting num quads=2263552, time taken: 0.54047 s


Adaptive quad displacement test: (~82741 resulting quads)
Old: 0.933 s
New: 0.06722 s

This one is heaps faster because the displacement is given by a texture, and a displacement error threshold, and the logic for this combination has been greatly improved.
Attachments
head_test.jpg
adaptive_quad_displacement_test.jpg

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Juju
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Re: Subdivision and displacement speedups

Post by Juju » Wed Sep 23, 2015 3:03 am

wow, excellent increase in efficiency!
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Oscar J
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Re: Subdivision and displacement speedups

Post by Oscar J » Wed Sep 23, 2015 9:17 am

Nice :)

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zeitmeister
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Re: Subdivision and displacement speedups

Post by zeitmeister » Wed Sep 23, 2015 6:33 pm

Very cool!


Cheers, zeiti
Cheers, David



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Indigo 4.2.23 | Indigo for C4D 4.2.22 | C4D R14.042 | Mac OS X 10.13.6 | Windows 10 Professional x64

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CTZn
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Re: Subdivision and displacement speedups

Post by CTZn » Sun Sep 27, 2015 10:59 pm

Great !
obsolete asset

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Behrendt
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Re: Subdivision and displacement speedups

Post by Behrendt » Wed Oct 28, 2015 6:56 am

Looking forward to this. I can't quite explain the technical details behind this, but V-Rays 2D Displacement is really awesome. Very high quality, very low memory footprint, so that huge surfaces can be rendered with this. In comparison to this atm Indigo can get quite slow, especially when using displacement on lots of surfaces. Hopefully this will improve on this :)

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zeitmeister
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Re: Subdivision and displacement speedups

Post by zeitmeister » Wed Oct 28, 2015 7:06 am

This adaptive example above is very very promising already...
We are excited ono!


Cheers, zeiti
Cheers, David



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Indigo 4.2.23 | Indigo for C4D 4.2.22 | C4D R14.042 | Mac OS X 10.13.6 | Windows 10 Professional x64

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