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I'm trying to make one-way glass like the one used in interrogation rooms. if you look at it from one side, it's a solid color and from the other it's clear glass, so only one side can see the other. Is there a way to do so in blender?

Thanks in advance.

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Use the Geometry node and its Backfacing output as factor in a Mix Shader:

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If you are in Eevee don't forget to enable the Alpha Blend option to have transparency:

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If you give it thickness, select one face and invert it with AltN > Flip:

enter image description here

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  • $\begingroup$ Thanks for the help. $\endgroup$
    – Jo xXx
    Nov 20, 2022 at 14:18
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    $\begingroup$ of course it can be a bit more complicated setup than just transparency (Glass, Glossy, etc) $\endgroup$
    – moonboots
    Nov 20, 2022 at 14:22
  • $\begingroup$ is there a way to do it if I wanted to add thickness instead of just a plane $\endgroup$
    – Jo xXx
    Nov 20, 2022 at 14:25
  • $\begingroup$ I've edited, if you are in Eevee don't forget to enable Alpha Blend $\endgroup$
    – moonboots
    Nov 20, 2022 at 14:26
  • $\begingroup$ If you give it thickness, select one face and invert it with Alt N > Flip $\endgroup$
    – moonboots
    Nov 20, 2022 at 14:28

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