shadow color for glass issue

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nocivo
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shadow color for glass issue

Post by nocivo »

Hello,
I applied the shadow color white to the glass, but the ray that pass through the glass become more bright than where is not the glass.
please correct this issue.
vetrata_shadow-color.jpg
I attach also the blender scene.

thanks
Attachments
glass-shadow color.blend
(1.53 MiB) Downloaded 62 times
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Dade
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Re: shadow color for glass issue

Post by Dade »

I should have fixed this problem. The next automatic build will include the fix.
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nocivo
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Re: shadow color for glass issue

Post by nocivo »

thanks a lot for the fix. I will check soon.
daros
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Re: shadow color for glass issue

Post by daros »

Hi do you experience the same problem with shadow color?

bidir cpu - normal shadow color
this one is as expected by knowing the caustics-through glass problem
glass normal shadow.png


bidir cpu - white shadow color
should not cast shadow on the red object
glass white shadow.png


PhotonGI on CPU glass normal shadow color
this one is as expected by knowing the caustics-through glass problem
https://drive.google.com/file/d/1s02Zb8 ... sp=sharing



PhotonGI on CPU glass normal shadow color
It increases the brightness of the area below the glass which is not expected.
\https://drive.google.com/file/d/1-vMFfh ... sp=sharing

tomorrow morning i post the scene
Last edited by daros on Wed Apr 27, 2022 10:31 am, edited 3 times in total.
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Sharlybg
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Re: shadow color for glass issue

Post by Sharlybg »

Is the shadow color 100% white in both cases ?
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daros
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Re: shadow color for glass issue

Post by daros »

Hi sharlybg, it is full white in the second and in the fourth example. In the first and the third it is black.
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Re: shadow color for glass issue

Post by daros »

Here is the luxcore scene

lightShadow.zip
(10.97 KiB) Downloaded 28 times
kintuX
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Re: shadow color for glass issue

Post by kintuX »

Have you checked your geometry? Your issues stem from that mess. :shock:

A small advice.
Consistency. If you want your simulation to run as intended & physically correct, do your work in same manner - precise & concise , according to as IRL, or simply choose more forgiving, biased engine. ;)
daros
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Re: shadow color for glass issue

Post by daros »

Hi kintux,
sorry i do not understand... what is wrong with this geometry? It's a very simple scene.
Below you find the obj.
Attachments
light test.rar
(4.48 KiB) Downloaded 17 times
kintuX
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Re: shadow color for glass issue

Post by kintuX »

It's simple alright, and it's also reason why I'm shocked.
So, see what are " Overlapping polygons, Intersecting geometry, Walls w/o Thickness...

For further endeavors try and go by Forum rules described on top.

PS
"Testscene" in Blender format. Otherwise, who knows what's going on and it looks like even yourself have issues with basic fundamentals.

PPS.
Goes for your first scene and this latest .obj.
Just learn some from exemplary scenes...
https://luxcorerender.org/example-scenes/
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