So I have an animated scene where the camera goes through a window into a house. The only issue is that the ceiling of the house is white (EDIT: it's actually not the ceiling, but the area lamp that's inside — see edit log at the bottom) while the camera looks into it from outside and I have no idea why. On top of that, a character's head is partially cut off, too - only when rendered through the glass.


enter image description here

[Rendered looking THROUGH the window]


[Rendered from INSIDE]


enter image description here

[This is what the scene looks like with the window plane hidden via "H"]

enter image description here

[These are the material properties of the glass. It's also been extruded.]

enter image description here

[And these are the materials of the house. Regular image textures UV unwrapped and assigned to the necessary faces.]


GPU rendering Cycles 1080*1920/25 Clamp direct: 1.11 Clamp indirect: 1.17 100 samples Bounces: between 5 and 0; Diffuse: 2; Glossy: 2; Transmission: 12 1/50 motion blur 256*256 spiral

The rest is set to default.

If you have any idea on how to solve this, please share it with me.


So I just realised that the whiteness might not be the house itself, but the AREA LAMP that's inside!! And the guy's head is cut off, since that part is in the physical area of the lamp object! Now the only thing I don't know is what to change. If I simply rised the lamp, it would cure the problem with the guy's head, but the whiteness would still be there. The lamp is - as I already said - an aerial light, its size is 3.433 , max bounces: 1024 , streght: 30

  • $\begingroup$ I'm not sure to what your whiteness refers, but if you mean noise, have a look at this question: blender.stackexchange.com/questions/4980/… $\endgroup$
    – WhatAMesh
    Feb 23, 2019 at 13:35
  • 1
    $\begingroup$ No, I do NOT have a noisy image problem. The problem with my renders is that a lamp with an area type setting is VISIBLE in form of a white object when it is rendered BEHIND a solidified plane with a GLASS material. $\endgroup$
    – AJudge
    Feb 23, 2019 at 14:07
  • $\begingroup$ Lights in cycles are invisible to the camera, but they will be visible if they are reflected by glossy surfaces (like glass). Which leads me to ask: Why do you need the glass in the fist place? Unless you are looking for reflections on it, I would suggest just not to use it at all. $\endgroup$
    – user1853
    Feb 23, 2019 at 17:25
  • $\begingroup$ If you share your blend file more people might help blend-exchange.giantcowfilms.com $\endgroup$
    – AzulShiva
    Feb 23, 2019 at 17:30
  • $\begingroup$ blender.stackexchange.com/questions/33324/… $\endgroup$ Feb 23, 2019 at 23:38


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