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How to use Arnold Ray Switch
Hi,
at the end of Arnold user guide/tutorials/shading/water bottle page https://support.solidangle.com/display/A5AFCUG/Water+Bottle
it advices to use a Switch Ray in a material with Refraction roughness to get roughness only for primary rays and not for secondary rays thus reducing render times.
This is exactly what I need but it’s not clear how to set it up.
Any help? Thank youCorrado
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1 Reply
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I think I figured it out (create 2 materials, one with roughness, one without; connect rough one to Refraction input of Ray Switch node, the other one to all other inputs).
The problem is that when I made a render test with 2 materials identical for everything apart roughness I got a slightly bigger render time for the non-rough material, so I’m more confused than before.Corrado
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