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Rendering with Arnold in CINEMA 4D using the C4DtoA plug-in.
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Light Bounce Through Windows

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Message 1 of 5
mckenzie2VER2
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Light Bounce Through Windows

Trying to recreate a scene from Corona in Arnold. In Arnold, I'm not getting any light bleed through the windows compared to Corona. 

 

Why would this be?

4 REPLIES 4
Message 2 of 5
lee_griggs
in reply to: mckenzie2VER2

The lighting looks completely different. What do you mean exactly when you say 'light bleed'?

Is opaque disabled for the glass shader? Is caustics enabled for the glass shader?

What ray_depth settings are you using?

 

 

Lee Griggs
Arnold rendering specialist
AUTODESK
Message 3 of 5

Hey Lee - I'm referring to the spill from the lights on the outer walls. I have the original scene file for Corona so I'm just using the same setup but in Arnold. In Corona the lights are simple 20x20cm area lights with an IES file. In Arnold I'm using a photometric light with the same ies profile.

 

My diffuse ray depth is 8, spec 2 and transmission 2. The glass shader is just vanilla, no caustics. It's all vanilla in Corona to.

Message 4 of 5
lee_griggs
in reply to: mckenzie2VER2

What happens when you increase transmission_ray_depth and enable caustics for the glass shader?

Lee Griggs
Arnold rendering specialist
AUTODESK
Message 5 of 5

Ray depth didn't make any difference, but caustics certainly did! I don't understand why that works but it certainly looks way better. Thanks again @lee_griggs !

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