ola ph avatar image
ola ph asked ·

HtoA Alembic instancing motion blur problems

I'm having a bit of headache with Arnold, instancing and motion blur at the moment, and hoping maybe someone here have some insight! I've got a little animation cycle of a bird flapping its wings that I'm copying onto some particles using the "copy to points sop". Then I'm doing some offsets and speed variation on the copies by setting the abcframe primitive intrinsic attribute. So far so good; render this with Mantra and motion blur and everything is working as expected. However with Arnold it seems as if the "transforms" are ignored, ie. only the wing flaps are motion blurred, the rest of the bird is razor sharp. Any idea what I'm missing here?

I was able to get it to work in Arnold by reading a bgeo cache of the same anim as a packed disk sequence and manipulating the index intrinsic, but I would prefer to keep things alembic if possible...

motion blur
10 |600 characters needed characters left characters exceeded

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.