Litesound 0 Posted February 6, 2020 (edited) Hello people! I'm currently trying to render pyro exoplosion with the motion blur in Redshift and I didn't succeed with any of my aproaches. I tried Convert to VDB , and then Merge Volume in Velocity mode with the motion blur ON but nothing works yet. I found few HIP examples but they neather don't work. Is there anybody who ever did this? Too bad there's nothing about it in the Redshift official documentation too. Please help Edited February 6, 2020 by Litesound Share this post Link to post Share on other sites
Howitzer99 20 Posted February 7, 2020 It sounds like the only thing you're missing is to enable "Use Velocity Grids" in the Geo node. It will be under Redshift OBJ/Volume, then make sure that the naming matches your velocity volume, "vel" by default. Share this post Link to post Share on other sites
Litesound 0 Posted February 7, 2020 (edited) Thank you Howitzer99 Just tried enabling 'use velocity grids' option and somehow motion blur doesn't seem really correct, see the pictures below. Is that okey that blur behaves like that? It makes smoke puffy, not blurry Edited February 7, 2020 by Litesound Share this post Link to post Share on other sites
DaJuice 48 Posted February 7, 2020 This is a known issue with Redshift. As in, motion blur on volumes does something, but the results are not accurate. From what I understand the devs are working on updating the volume tech to add support for things like multi-scattering, so hopefully we'll see a fix for this as well. Share this post Link to post Share on other sites
Howitzer99 20 Posted February 8, 2020 Maybe try adjusting the Velocity Grid Scale, it's an option below Use Velocity Grid in the screenshot above, and might be more accurate than frame duration. At least until, if it is a bug that the devs are aware, and a proper fix is in place. Share this post Link to post Share on other sites
Litesound 0 Posted February 21, 2020 Howitzer99 unfortunately Velocity Grid Scale does the same thing as a frame duration, the same fluffy result, which is dissapointing. So let's wait updation from devs:) Share this post Link to post Share on other sites
Howitzer99 20 Posted February 21, 2020 What version of RS are you using? If you can you share a file, it would help to debug. Share this post Link to post Share on other sites
Jorge Medina 0 Posted February 22 Hi, the same problem here. I think it should be somthing to be with the velocity data transfered to teh engine. Dmitry, are you working in the the original world scale from houdini? Share this post Link to post Share on other sites