[Sidefx-houdini-list] motion blur

John Coldrick jc at axyzfx.com
Mon Nov 26 11:50:26 EST 2007

On Monday 26 November 2007 11:19, Phil Spicer wrote:
> Hi,
> Can anyone give me a quick overview of setting motion blur in Houdini 9?

	Yes, personally I found this something that's not as well documented as it 
should be.  Bitched about it.  :)  By default the blur is controlled in the 
ROP, the same for all objects.  You can use a Mantra ROP as a guide for what 
you need(Properties/Sampling), and yes, you can implement whichever one of 
those parameters(doesn't need to be all!) on the object to break out 
different behaviour.  The priority is to use the object value first, then 
whatever is on the ROP.

	Make sure you grab Allow Motion Blur(an on/off switch, and probably the thing 
you're missing), Xform Time Sample(set to 2 for a full frame blur) and Geo 
Time Samples(deform blur).

	Xform 2 and Geo 0 is the equivalent of XForm blur in H8.  Both set to 2 is 
the equivalent of Deform blur.

	Do a search for Motion Blur in the help, check out the one for Rendering.  It 
goes into more depth.



John Coldrick                  www.axyzfx.com        Axyz Animation
416-504-0425                                         477 Richmond St W
                                                     Toronto, ON Canada
jc at axyzfx.com                                        M5V 3E7
Coincidence, n.: 
	You weren't paying attention to the other half of what was
going on.

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