I found where I found that out,
ActionArt is smarter than all of us :)
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• View topic - ICE Particle Volume Shader and Motion Blur
ActionArt
Post subject: Re: ICE
Particle Volume Shader and Motion Blur
PostPosted: 30 Jan 2011,
21:47
I FINALLY figured out how
to make motion blur work with the particle volume shader.
Here's the trick for anyone who might be interested:
1) Cache Particles - this
is in the documentation
2) Turn OFF scanline for
primary rays! (Raytrace ONLY) - this is what I was missing
and doesn't seem to be in the documentation.
Now it works perfectly and
fairly fast.
On Saturday, April 25, 2015 11:52:29, pete...@skynet.be wrote:
you might be a smarter cookie than I am (it’s likely even) – but
as
far as I know motion blur does NOT work on volumetric particles.
What does work with the particle volume shader, is aligning the
particles along their velocity, and making them soft streaks which
is
going to give you something very similar to motion blur. You have
to
dig into the compound for this - I think it’s all in the particle
shaper. Might that be what you had in mind?
*From:* Andi Farhall <mailto:hack...@outlook.com>
*Sent:* Friday, April 24, 2015 12:34 PM
*To:* softimage@listproc.autodesk.com
<mailto:softimage@listproc.autodesk.com>
*Subject:* volumetric particle render - with motion blur
Hi chaps,
it's been ages (years) since I've used mental ray, but I clearly
remember rendering ice particles with the mental ray volume
renderer
and motion blur. It was very slow but it worked.
Now I have to do something similar again, I can't for the life of
me
get it to work, the cloud is cached and motion blur works as
expected
with a phong but not a volume render. MB set to end on frame. The
camera is static. Anybody remember a specific hoop that needs to
be
jumped through?
cheers,
Andi
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