Hi Motion Blur on particles movement does not work, Motion vector for Camera movement should/could work. You have three choices: 1) Open the volume shader and put and save the motion vectors into a framebuffer. Then blur them in comp. 2) Let the shader blur the particle texture. You can enable it in the Texture coord tab of the particle density shader. It helps using slightly larger particles and enabling elliptical shape and align on velocity. 3) Use the ICE Strand Trails and the trail settings in the particle density shader. Might require to change the ice tree to support frame sub-steps or change the scene into 250FPS and render every 10th image. http://www.binaryalchemy.de/develop/shd_vol/img/PT_Trail.jpg (sample scene ICE_TrailGlass.scn) Holger Schönberger technical director The day has 24 hours, if that does not suffice, I will take the night
_____ From: [email protected] [mailto:[email protected]] On Behalf Of Andi Farhall Sent: Monday, April 27, 2015 11:32 AM To: [email protected] Subject: RE: volumetric particle render - with motion blur the cached out, including the volume cloud attribute and the primary ray > raytrace one was my starting point... still gives me nada. Seems this one really is a fix it in post situation! ver2015 btw cheers everyone, A> ........................................................................... http://www.hackneyeffects.com/ https://vimeo.com/user4174293 http://www.linkedin.com/pub/andi-farhall/b/496/b21 http://www.flickr.com/photos/lord_hackney/ http://spylon.tumblr.com/ This email and any attachments to it may be confidential and are intended solely for the use of the individual to whom it is addressed. Any views or opinions expressed are solely those of the author and do not necessarily represent those of Hackney Effects Ltd. If you are not the intended recipient of this email, you must neither take any action based upon its contents, nor copy or show it to anyone. Please contact the sender if you believe you have received this email in error. ------------------------------------------------------------ _____ Date: Sun, 26 Apr 2015 20:34:37 -0400 From: [email protected] To: [email protected] Subject: Re: volumetric particle render - with motion blur I found where I found that out, ActionArt is smarter than all of us :) www.si-community.com View topic - ICE Particle Volume Shader <http://www.si-community.com/community/viewtopic.php?p=8500&sid=f2342dcab9141cc87a8b9a2378fc6e6e#p8500> 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, [email protected] wrote: you might be a smarter cookie than I am (its 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 its all in the particle shaper. Might that be what you had in mind? *From:* Andi Farhall <mailto:[email protected]> <mailto:[email protected]> *Sent:* Friday, April 24, 2015 12:34 PM *To:* [email protected] <mailto:[email protected]> <mailto:[email protected]> *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 ........................................................................... http://www.hackneyeffects.com/ https://vimeo.com/user4174293 http://www.linkedin.com/pub/andi-farhall/b/496/b21 http://www.flickr.com/photos/lord_hackney/ http://spylon.tumblr.com/ This email and any attachments to it may be confidential and are intended solely for the use of the individual to whom it is addressed. Any views or opinions expressed are solely those of the author and do not necessarily represent those of Hackney Effects Ltd. If you are not the intended recipient of this email, you must neither take any action based upon its contents, nor copy or show it to anyone. Please contact the sender if you believe you have received this email in error. ------------------------------------------------------------
