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Shadows through "HighGradeGlass"

glass shadows rendering black

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#1 ktejlgaard

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Posted 23 August 2017 - 12:42 PM

Hi Ive spend hours trying to figure out why I cant see shadows cast from "HighGradeGlass" properly when looking through "HighGradeGlass" (see image)
The shadows cast from the glass get all black when wieved through the glass. I can get around it by using AGS but Im loosing detail on the shadows and reflections by doing so.
How can i get proper shadows when looking through the glass?

Kristoffer

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  • Skærmbillede 2017-08-23 kl. 19.32.46.png

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#2 pylon

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Posted 23 August 2017 - 01:37 PM

High Grade glass objects need to be solids modeled to the correct thickness, just like glass in the real world. (i.e, not a surface as you would use for AGS.) Is your model set up this way?



#3 ktejlgaard

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Posted 23 August 2017 - 02:09 PM

Each sheet in the dome is modelled as a solid with a thickness of 6mm. (like the real thing)
I tryed the same render with simple blocks, and got the same problem



#4 pylon

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Posted 23 August 2017 - 02:24 PM

Please post a simple example project, so we can further advise you.



#5 ktejlgaard

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Posted 23 August 2017 - 02:27 PM

Do you want a FMZ or MXI file?
attached a render of the panes/blocks

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  • Skærmbillede 2017-08-23 kl. 21.25.13.png


#6 pylon

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Posted 23 August 2017 - 02:47 PM

formZ project file



#7 ktejlgaard

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Posted 23 August 2017 - 03:08 PM

Attached File  GlassTest.zip   331.91KB   15 downloadsSkærmbillede 2017-08-23 kl. 22.08.09.png I have attached a Form Z file with three blocks and the "glass texture"



#8 ktejlgaard

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Posted 23 August 2017 - 03:14 PM

And thank you so much for the quick reply!



#9 pylon

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Posted 23 August 2017 - 05:09 PM

Hi,

 

In Maxwell Object Attributes, enable the Hide From -> Global Illumination on the glass objects. Does this help?

 

(If not, please export your scene and send your MXS and MXM to Next Limit support; perhaps they will have an alternate solution for you. https://portal.nextlimit.com/ )



#10 ktejlgaard

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Posted 24 August 2017 - 03:38 AM

Hi,
Hiding from GI is part of the "work-around" and then having an additional object with AGS that is hidden to the camera, casting the shadows.
But it seems wrong that I cant use the proper shadows cast from "HighGradeGlass" because they cant be seen through the glass itself?

Kristoffer



#11 pylon

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Posted 24 August 2017 - 08:37 AM

I agree. Please contact NL support (see link above) and provide your MXS and MXM as examples. This is not a formZ-plugin specific issue, so don't include your formZ project, or they will kick it back to me. ;)


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#12 Gary

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Posted 24 August 2017 - 06:54 PM

Screen Shot 2017-08-24 at 4.52.05 PM.jpg Hello,

Adjust the transparency setting in your MXM to a higher number and a greater amount of light will pass through your glass (and then, in effect, the glass will not cast a shadow). If you enter a transparency value greater than the size of your object, I believe 100% of the light will pass through it.

 

Gary


Edited by Gary, 24 August 2017 - 06:56 PM.






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