question

Joseph Bryars avatar image
Joseph Bryars asked

.ass instance file motion blur issue, Houdini

I am using houdini 18.5.696 and the corresponding arnold version. What I am ultimately trying to do is save out complicated geometry and then instance them on a large amount of points for a scene I am creating. Everything looks good until I turn on motion blur. Basically it looks as tho every instance is rushing to it's current location from world space 0. I have tried setting various types of motion blur (transform, deform, velocity) on the geo as well as the ROP that is saving the .ass file. None of this seems to make a difference and the motion blur looks the same and wrong. I have included a very simple example below of the issue I am experiencing. The first image is just a box geo copied to 3 points and animated along the x axis. With the normal copy to points everything works fine. The second image is the same 3 points but I am using an .ass instance file of the cube. This is where the motion blur is all messed up. If anyone knows how to fix this, I would very much appreciate the help!

cube-non-ass-correct.jpg

cube-ass-fail.jpg


asshtoa arnold houdinimotion blur
10 |600

Up to 5 attachments (including images) can be used with a maximum of 2.0 MiB each and 9.8 MiB total.

0 Answers

· Write an Answer

Write an Answer

Hint: Notify or tag a user in this post by typing @username.

Up to 5 attachments (including images) can be used with a maximum of 2.0 MiB each and 9.8 MiB total.

Welcome to the Arnold Answers community.

This is the place for Arnold renderer users everywhere to ask and answer rendering questions, and share knowledge about using Arnold, Arnold plugins, workflows and developing tools with Arnold.

If you are a new user to Arnold Answers, please first check out our FAQ and User Guide for more information.

When posting questions, please be sure to select the appropriate Space for your Arnold plugin and include the plugin version you are using.

Please include images, scene and log files whenever possible as this helps the community answer your questions.

Instructions for generating full verbosity log files are available for MtoA, MaxtoA, C4DtoA, HtoA, KtoA, and Kick.

If you are looking for Arnold Documentation and Support please visit the Arnold Support site.

To try Arnold please visit the Arnold Trial page.

Bottom No panel present for this section.