CGTalk - Primary visibility not working with instanced particles an MR

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antweiler

08-15-2003, 11:32 PM

Hello,
I have a poly cube instanced to some particles. I need only the shadows, so I switched Primary Visibility off in the AE.
works in maya software but not in MR (which i need for the better quality with raytrace shadows)
it does work for non instanced geometry. A bug? Did I miss something, or is there a workaround?

thank you

anti

Jozvex

08-16-2003, 03:16 AM

Hmmm, it does appear to be a bug.

And everything else I tried to get them to be invisible yet still cast shadows either just didn't work, or did something crazy. I tried:

1. Switching on/off the renderstats checkboxes for the cube, the instancer, the particles etc

2. Applying a 'Use Background' shader to everything.

3. Changing the Mental Ray visibilty options for each object, like Trace, Visible etc

4. Applying a Mental Ray 'Transmat' (invisibilty) shader to the cube...

Applying the Transmat shader solved the problem, yet created a new one. The particles became invisible, they still cast shadows..... but this weird 'blobby-dotty-splatter-thing' renders floating near where the particles should be! It's like..... an ink splatter or something.

Anyway, I couldn't get the splatter thing to go away. You should report this as a bug to Alias. :hmm:

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