I'm trying to make a scene like this:

Goal Scene

But no matter how I mess with the bounce settings in cycles; the light just isn't coming out of the other side of the prism:

Render Result


What am i doing wrong?

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    $\begingroup$ See also: blender.stackexchange.com/questions/27805/… $\endgroup$ – Timaroberts Jul 6 at 19:48
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    $\begingroup$ Cycles cannot do this out of the box. Use Luxrender or other render engine. $\endgroup$ – susu Jul 6 at 19:51
  • $\begingroup$ No; the issue isn't the dispersion effect its the light not shining on the table on the other side of the prisim. I got cycles to do it breifly but when i tried to figure out what i did it stopped happening and i haven't been able to recreate it again. $\endgroup$ – Patrick Jeeves Jul 6 at 22:08

It was the "indirect light" in the "clamping" section of the "scene" properties tab. It needs to be set to 0 for light to go through the prism. I do not understand why it is so dark that that happens though.

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