Glass shader problem in Max 2020

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Miguel Soto asked · Feb 14 at 11:18 PM

Glass shader problem in Max 2020

Hello.

I'm having problem with glass shader in Max 2020 and start to find answer in this forum and I found this thread: https://answers.arnoldrenderer.com/questions/4890/view.html

I download the file that Mads fixed, save the material and load in my scene:

This glass shader I made with Mads settings, if you notice the cristal is black (I copied all presets).

This glass shader that Mads made shows different and mine is the same:

I don't now what is the problem, but I can't make a good glass shader in Max 2020, is there any problem with arnold updates?

If you download the Arnold Shaders from the help page:(https://docs.arnoldrenderer.com/display/A5AF3DSUG/Material+Library) and load in Max 2020, it has the same problem.

Could you help me?

Thanks.

File: https://drive.google.com/open?id=1-cSL_SxA9N9sGaXQF0OU3gm4K_jBy-g_

glass maxtoa

mymaterial.jpg (145.1 KiB)

yourmaterial.jpg (141.0 KiB)

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Answer 1 · 2020-02-17T14:13:24Z

Miguel Soto answered · Feb 17 at 02:13 PM

Hello Griggs.

This link that you gave me was the material that I test, and the glass material always render with a tint.

I tried in maya with Arnold Material and the glass shows realistic but in Max the glass is not the same.

I have a question: Why in maya if I want to create a glass material in arnold, I only need to select the material and change the Base Weight to 0, specular 1 and transmission 1 and press render.?

As you can see in the image the cristal shows different (more realistic) but in Max I have to tweak to obtain the same result.

The material in arnold help page have a gray tint (always), if I create a glass material (always gray tint). Could you check that please?

mayasample.png (503.4 KiB)

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Lee Griggs · Feb 17 at 03:04 PM

I've exported it from the MtoA library, so it should be exactly the same now. Can you try it and confirm it, please?

https://docs.arnoldrenderer.com/display/A5AF3DSUG/Material+Library

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Miguel Soto Lee Griggs · Feb 17 at 04:25 PM

Thanks Griggs.

I found a issue (or I supposed) with physical cam in Max, and I'll appreciate if you could help me.

If I use a physical cam to render glass (sphere) and the parameters with this cam is f=8, shutter 1/60, iso=100. Also I use skydome and use intensity and exposure=1.

The cristal is real.

But if I use a physical cam to render glass (sphere) and the parameters with this cam is f=8, shutter 1/100, or 1/250, 1/1000 and so on. Also I use skydome and use intensity=1 and exposure =8 (as default).

The rendering cristal appear black and I can't see trasmission.

Am I wrong?

Thanks.

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sphere-1-60.jpg (190.8 KiB)

sphere-1-750.jpg (129.3 KiB)

Answer 2 · 2020-02-17T07:34:25Z

Lee Griggs answered · Feb 17 at 07:34 AM

Did you try this one?

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