Light Leaks

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paulwilkinson
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Joined: Thu Nov 23, 2017 12:35 am

Light Leaks

Post by paulwilkinson » Sat Aug 24, 2019 10:41 am

Hoping someone can help.

If I create a completely sealed box in Sketchup and then render it (nothing else - just a box) with the camera inside the box, I get light leaks at all the joints.

The geometry says this shouldn't be possible.

I am using Sketchup Pro 2019
Skindigo 4.2.21.3
Indigo RT v4.0.66, OS X 64-bit build

Why is this happening? Also, is there a newer version of RT? I can't find a download for it.

THANKS!
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Originalplan®
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Joined: Sat Sep 26, 2015 8:58 pm
3D Software: Cinema 4D
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Re: Light Leaks

Post by Originalplan® » Wed Sep 04, 2019 12:48 pm

paulwilkinson wrote:
Sat Aug 24, 2019 10:41 am
Hoping someone can help.

If I create a completely sealed box in Sketchup and then render it (nothing else - just a box) with the camera inside the box, I get light leaks at all the joints.

The geometry says this shouldn't be possible.

I am using Sketchup Pro 2019
Skindigo 4.2.21.3
Indigo RT v4.0.66, OS X 64-bit build

Why is this happening? Also, is there a newer version of RT? I can't find a download for it.

THANKS!
Hey Paul.
This kind of problems are usually modelling related.
Please make sure everithing is ok with your scene.

paulwilkinson
Posts: 6
Joined: Thu Nov 23, 2017 12:35 am

Re: Light Leaks

Post by paulwilkinson » Thu Sep 05, 2019 10:38 am

Hi Originalplan

I know what you mean wrt geometry. However, all i have done is create a square and then used push/pull to create a cube. At this point the geometry is as solid as you can get.

The render you see is by placing the camera inside that box with sunlight as the environment outside.

If i render it, i then get the light leaks.

This, I guess, suggests the problem is in the generation of the export from Sketchup to Indigo as the edges are definitely co-incident in the Sketchup model.

Any ideas?

Thanks for your help!

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pixie
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Re: Light Leaks

Post by pixie » Thu Sep 05, 2019 10:47 am

out of my head
a) use cpu
b) put a light inside the box
c) don't chose reinhard
d) model the the walls so they have weight

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Oscar J
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Location: Gothenburg, Sweden
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Re: Light Leaks

Post by Oscar J » Thu Sep 05, 2019 6:08 pm

Pixie is right. It’s a precision problem with GPU rendering that can be worked around with above mentioned methods.

paulwilkinson
Posts: 6
Joined: Thu Nov 23, 2017 12:35 am

Re: Light Leaks

Post by paulwilkinson » Fri Sep 06, 2019 3:04 am

Thank you guys - I will give those a try and see how it goes!

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