Foam lives outside of box but doesn't render

[ka_sam]

Please help. I've simulated a ship wake, the foam is set to live outside of the sim box and does so. But none of it renders outside of the box. Please see the attached images. I would appreciate any help.

3ds Max 2022, V-Ray 6, Phoenix adv50100

[Svetlin.Nikolov]

Hello,

Would it help if you add an infinite plane below the ocean to serve as a bottom? We always recommend that because if the water material has a fog color, the renderer needs to know where the fog ends. So if there is only the liquid surface above, it might not render correctly and it would also need a bottom underneath.

Another thing you could try would be to change the Particle Shader that renders the foam into geometry mode - by enabling the Render As Geometry option.

And another suggestion - could you try reducing the fog density of the V-Ray material and see if the foam shows up? It's possible that the particles outside the simulator box are juuust a little below the water level, so if the fog is very thick, it might be hiding them completely.

Cheers!

[ka_sam]

Hi,
Non of your suggestions worked, but you did get me thinking about why it might be hidden. I ended up lowering the ocean level under the render tab, and the foam was underneath! Even though I had made sure the simulated level and rendering level were equal, lowering the render level revealed it.
Thanks for your help.