PRTLoader with PHXFoam

[Joelaff]

I am trying to render some particles loaded with a PRTLoader, but shaded with PHXFoam. These particular PRT files were exported from Phoenix.

I can load the PRT files in with a PRTLoader. I can see the particles in the viewport. I set both viewport and rendering to 100% in the PRTLoader.

I added a new PHXFoam, and selected the PRTLoader as the source particles. I get nothing in the render.

Is this supposed to work? Looks like I have build 24510 installed. I can grab the latest nightly, but updating the entire farm is a pain.

Thanks.

[Joelaff]

I am on the latest nightly now. There have been a lot of improvements! I still can't get this to work, though.

[Joelaff]

Aha! It seems that PRT files created with the older 24510 release build do not work correctly. PRT files created with the latest build are working!

I got clued in to it being the PRT files when I tried to use the PRTs created by the old version of Phoenix (24510) in a Krakatoa PRT Birth in PFlow. I kept getting errors that it could not convert uint64 to int32 for IDs (even if I tried to do it with a Magma modifier). So I guess the older version was writing the PRTs wrong (at least wrong for these uses, I don't know if the spec supports uint64).

[Ivaylo Katev]

i suppose the size channel is missing in these old files, and if you increase the size multiplier they will render too.

[Joelaff]

That was my first thought. I tried a size of 20 and still got nothing. Maybe I needed to go higher still.

Good to know the new version works.

[Ivaylo Katev]

the log file can clarify this question

[Svetlin.Nikolov]

Indeed, the old prt export was wrong - we fixed it a couple of weeks ago.