[Solved] Missing lighting in reflection

Forums: [Solved] Missing lighting in reflection
Blender (Export script developed by yoyoz; Integrated Plugin developed by JimStar)

[Solved] Missing lighting in reflection

Postby davorin » Sun Dec 02, 2018 2:26 pm

davorin Sun Dec 02, 2018 2:26 pm
Hello

Doing a bathroom scene with fluid animation for a product presentation..and as it involves indirect lighting I need to use pathtrace for rendering..

In the scene I have a mirror with a light source at the back...which illuminates the concrete wall around it...but in the reflection in the shower glass this lighting effect is totally missing..only the light source itself can been seen...

Is there a way around this render error?
Attachments
missing_reflection.png
Last edited by davorin on Sun Dec 02, 2018 4:00 pm, edited 1 time in total.
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Re: Missing lighting in reflection

Postby J.C » Sun Dec 02, 2018 2:37 pm

J.C Sun Dec 02, 2018 2:37 pm
What is missing in the shower glass reflection?
Glass has lower reflection IOR compared to mirror surfaces so the reflection will always more subtle.
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Re: Missing lighting in reflection

Postby davorin » Sun Dec 02, 2018 2:58 pm

davorin Sun Dec 02, 2018 2:58 pm
At the front the light illuminates the concrete wall...in the reflection it does not illuminate the wall...only the outline of the light source is lit...
Debian 10.2 on AMD 1950X, 64GB RAM, 2 * RTX2080Ti
Octane Blender Studio 2020.1-XB3-21.3
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Re: Missing lighting in reflection

Postby davorin » Sun Dec 02, 2018 4:00 pm

davorin Sun Dec 02, 2018 4:00 pm
Seems like a false alarm (o;

When I bump up the light power really high I can also see the lighting of the wall in the reflection...

Guess it needs more than 10k samples to see something..
Debian 10.2 on AMD 1950X, 64GB RAM, 2 * RTX2080Ti
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Re: Missing lighting in reflection

Postby J.C » Sun Dec 02, 2018 4:27 pm

J.C Sun Dec 02, 2018 4:27 pm
It is visible but very subtle. You need to increase IOR to make it more visible.
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Re: [Solved] Missing lighting in reflection

Postby J.C » Sun Dec 02, 2018 4:32 pm

J.C Sun Dec 02, 2018 4:32 pm
reflection.png
CPU – i9 13900KF, 128GB RAM, GPU – RTX 4090
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