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I was trying to recreate a so-called CMY cube, which is a translucid cube where opposite sides are coloured cyan, magenta, and yellow. When looked at from an angle, these colours mix, e.g.

enter image description here

(More pictures here).

The naive approach (namely, a cube with different shaders on each face) does not work:

enter image description here

Is this something Cycles can handle? (I mean, in a natural/physically realistic way; although if this is not possible, a "fake" solution would be interesting too.)

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  • $\begingroup$ The effect seems to rely rather heavily on refraction: in your first photo the far corner of the cube is visible from three different angles through each of the near faces. To model it, you'll need a refractive material with a suitable index of refraction, and a renderer that handles it correctly. $\endgroup$ – Ilmari Karonen Oct 26 at 9:55
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You should be able to do it rather easily. Just do what you already did (make each face a different color/material) - just make the material a Glass BSDF. Don't forget to turn the roughness down. You may also need to play with the individual IOR's to get the effect you need.

CYM

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Cycles is perfectly capable of this :).
Just use a simple Glass shader.

Standard Glass BSDF shader with default settings: enter image description here

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