Speed issues emitting from deforming geometry.

[flay]

We are attempting to emit from a Alembic cache (think rippling snake) but have run into some pretty severe speed issues. Any suggestions to speed things up or known issues with deformations? A sphere with similar polycount runs fine through the same setup.

Thanks!

[Ivaylo Katev]

how much polygons you have? phoenix does not perform full scan of the geometry when no animation is detected. if your snake is moving every frame the acceleration tree is rebuild and the geometry is rescanned, that can take a lot of time in case of many polygons and huge grid resolution. if you can, send us the scene to investigate the problem

[Paul Oblomov]

Alembic from crate ?

[flay]

Well, yesterday was my first on Phoenix, today has gone much, much better.

Turns out emissions from deforming geometry work fine in other test cases. Emissions from a deforming object that changes scale from small to large (by a few hundredfold) may be the cause of my problems. It's an adaption of an effect directly from a Fume rig (which handled the case just fine). I think I need to delve a bit deeper into how geometry is evaluated I guess. Any suggestions? Can build a test case and upload it if I get some time free tomorrow.

[ivaylo.ivanov]

Yep, test scene will be appreciated. You can send it to our mail - phoenix at chaosgroup.com