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Prman And Raytracing

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after hours in documentation I have figured out to hand fix my rib

the line I need to add to every object that I want be "seen" by rays is

Attribute "visibility" "trace" [1]

now how can I include this inside houdini, I bet it something like including part of an external rib (just to make thing interesting, but how to do that :unsure: )

OK figured this one out as well

object level, render tab, pre-include -> dough :oneeyedsmiley02:

Now is there any way to create raytracing shaders in VOP's? at the moment I am just writing them in notepad - nad a bad thing but if need something simple it is easyer to tweak inside houdini


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