red splotches with MR and RPC

[lgradzki]

Hi there,

 

I'm working of an interior animation containing many RPCs and using mental ray. For several days everything was rendering correctly, but today out of a sudden these red splotches appeared. Does anybody know the issue and/or any remedies for that?

Cheers

 

Lukasz

[lgradzki]

...and now I have even yellow and green bits

[vince]

Not sure if this will work with MR as I use VRay but, I have that problem when VRay detects a raytrace material in the scene (they don't get on), it might be worth searching the materials in your scene to see if there are a raytrace materials.

[lgradzki]

I don't have any raytrace materials in the scene, but the architectural glass material seems to be causing problems. As long as I don't use final gathering everything is fine, but with final gather these weird splotches start to show up on the glass. I'll try to change the arch glass to standard mat

[EricMLevy]

MR doesn't support RPC. Do you have the plugin from RPC to make it work?

[lgradzki]

well, it does. you have to install the latest plugin though

meanwhile i found the solution for the colorful artifacts - when tracing depth values in final gathering were higher than their equivalents in ray tracing i've got undesirable results...

[mmowry]

i've had the exact same issues w/ any of the architectural materials and finalRender. Coming to work that morning after an all-night render to find splotches was not fun. I steer clear of those materials anymore.

[Matt Clementson]

All the architectural materials use the internal Raytracer - so you should avoid using them with any 3rd party renderer.