Author Topic: Questions about glass?  (Read 1343 times)

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Offline sburkhead

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Questions about glass?
« on: January 05, 2018, 07:04:41 pm »
I am wondering why my glass is not glowing more? I needed to model this light. It has a 5mm thick glass. The light on the inside is an area light. I have pumped it up a lot, but still get areas of the glass that do not light up. Thoughts?

Offline sburkhead

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Re: Questions about glass?
« Reply #1 on: January 05, 2018, 10:49:36 pm »
got it figured out.

Offline LayC42

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Re: Questions about glass?
« Reply #2 on: January 06, 2018, 02:19:33 pm »
You enabled global illumination?

Offline mattjgerard

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Re: Questions about glass?
« Reply #3 on: January 08, 2018, 06:18:51 am »
yeah, please post your solution, may help others that are looking for help with this as well.

Offline Will Gibbons

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Re: Questions about glass?
« Reply #4 on: January 08, 2018, 07:46:29 am »
Adding a tiny amount of roughness will help too... since perfectly clear glass does not glow.

Offline zooropa

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Re: Questions about glass?
« Reply #5 on: January 22, 2018, 03:19:56 am »
It will be interesting to know how you figured out...

Offline KeyShot

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Re: Questions about glass?
« Reply #6 on: January 22, 2018, 04:53:13 am »
For glass it helps to increase the number of ray bounces in the lighting tab. Global illumination should not be too important. If the model contains diffuse elements then it may help to enable caustics. As Will stated, adding a some roughness to the glass helps as well.