how can I make an emission shader shine through a transparent material?

Question

I am trying to use the emission shader to make a light, but I realized that it seems to be only shining through to a limited extent:

lighthouse with failed shader

These are the nodes for the light:

light nodes

These are the nodes for the glass:

glass nodes

How can I make it so that it illuminates objects on the other side of the glass?

Do you have No Caustics enabled in Render settings > Light Paths? — gandalf3, Commented Jan 22, 2014 at 2:40

gandalf3 · Accepted Answer · 2014-01-22 02:47:54Z

6

Make sure you have caustics enabled by unchecking No Caustics in Render settings > Light Paths:

enter image description here

With caustics:

enter image description here

Without caustics:

enter image description here

answered Jan 22, 2014 at 2:47

gandalf3

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$\begingroup$ All it shows for me is Reflective Caustics twice, Whats up with that (Cycles Render)? $\endgroup$
– Sean
Commented Feb 12, 2017 at 2:51
$\begingroup$ Reflective And Refractive Sorry $\endgroup$
– Sean
Commented Feb 12, 2017 at 2:51
$\begingroup$ @Sean The "no caustics" setting was split into separate settings for reflection and refraction a while back. In this case at least the refractive part should be enabled to allow rays through the glass material. $\endgroup$
– gandalf3
Commented Feb 12, 2017 at 8:47

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