Hi,

 

anybody still here? :)

 

Recently I was working on an old  test scene again to compare arnold and 
redshift (and even mr for a good amount of fun). Well, in that particular scene 
arnold crashes when using motion blur. I nailed it down to settings in the 
light shader (arnold quad light).



The values in the light shader for camera visibilty as well as transmission 
visibility are both zero by default. Maybe for a reason. Then it renders but 
changing them to any other value will crash arnold when using motion blur. 
Unfortunatly you would need transmission visibility for correct reflections in 
the glass.

Not sure if its an arnold or SItoA bug. I’m using SItoA 7.2.2.0.

 

I worked around it using grids for the transmissive highlights and switched off 
anything but the specular transmission for the grids. A bit awkward... that’s 
what I would expect from mental ray, not arnold. :(

Does anyone know if it’s a known bug, limitation or maybe something else?

 

You can see the issue here (the glass model has a 360 rotation over 50 frames)

www.imagefront.de/tmp/testscene_armadillo_comparison.jpg 
<http://www.imagefront.de/tmp/testscene_armadillo_comparison.jpg> 

 

Sven

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