Arnold not rendering X Particles Dynamic Objects

[Anonymous]

Hello. I am working on a project now using X Particles And Arnold. I am done with the simulation, cached and everything seems normal both int he viewport and IPR but when I try to render Arnold won't render the objects with dynamic tag. I am attaching screenshots and a sample video. Does anybody know why this happens?

[peter.horvath6V6K3]

Not sure, maybe some X-Particles settings are missing. Can you render with Standard or Physical to see if the simulation is correct there? If so, could you share the scene?

[christian.rocha]

I'm also experiencing this. Did you find a solution?

[peter.horvath6V6K3]

No update on this, never received a repro. I can take a look if you can send me a scene.

[christian.rocha]

I'd appreciate that — sorry for the slow reply. Here's an example scene I put together that shows the issue. This is with Cinema 4D R22 on a Mac.

https://www.dropbox.com/s/ia5829lvjx5p4z6/xp-dynamics-arnold.c4d?dl=0

[peter.horvath6V6K3]

It seems to be working if you convert the Sphere to a polygon object (Make Editable), but not as a primitive. I'll take a look if this can be fixed.

[christian.rocha]

That did the trick, thank you. But yes, would be nice to see fixed.

On that note, I've also noticed that spheres in metaballs, which I believe must be primitives for the metaball to work properly, suffer from the same issue.

[peter.horvath6V6K3]

This should now be fixed in C4DtoA 3.1.0.2.

[mat6R44J]

I'm experiencing the same thing, but I've just updated Arnold to 4.0.2 earlier today. I'm also unable to render X-Particles with motion blur in Arnold.

For what it's worth, I'm using R21 on a 2019 Mac Pro, running Big Sur (11.6.1).

[peter.horvath6V6K3]

Could you please send me a scene to take a look at?