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Specular, reflection issue behind triple glazed glass with thickness

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  • Specular, reflection issue behind triple glazed glass with thickness

    Issue:
    Triple glazed windows (3 panels of glass with thickness) prevent reflections on other side of the glass visible (everything behind the glass will ignore specular and reflections).

    How to reproduce:
    1. create building: 3 walls, ceiling and floor apply whatever material you want.
    2. create 3 panel window (boxes for panels are fine) add glass material to all 3 of them.
    3. create box outside the building behind the window (something like balcony) with a reflective material, glossiness 0.8
    4. Add any source of light (sun+sky, Dome...)
    5. render (ipr, production)

    Temp solutions i come up with:
    1. is to lower max depth of glass to 4 for refraction, anything above will prevent reflection and specular to be visible on the other side of glass, this is useful if you need thickness of glass panels.
    2. Using planes without thickness if it isn't required.

    This issue do not affect single plane or double plane glass.
    Also i am sure this will affect the scene however i am not sure to what extent.


  • #2
    Omg... I am such a noob, ahahahah
    I have forgot to check reflection max depth on material i used outside, in this instance it was Siger shader with max depth of 4...
    I guess everything is fine. post can be deleted.

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