I have no control over the reflections and shadows of the ray_switch_shader

[17350757759]

I have no control over the reflections and shadows of the ray_switch_shader

How can I control the shadow and reflection of an object separately

[lee_griggs]

You need to use a trace_set. There is a scene file here:

https://docs.arnoldrenderer.com/display/A5AFCUG/Trace+Set

[17350757759]

Thank you but this scenario doesn't contain the example I was looking for

[Stephen.Blair · Accepted solution]

You cannot use rayswitch and trace sets together like that.

rayswitch is for rays that hit an object. trace sets is for rays traced from an object.

You can use trace sets to control what objects are visible in the reflections.
Put a trace set on the plane. Then for one or more of the spheres, set the trace set. That will control which spheres are visible in the reflection.

[17350757759]

Thank you, I know how the trace set is used, but I don't understand how the example in this Arnold help document does it, or is this example wrong?
https://docs.arnoldrenderer.com/display/A5AFCUG/Trace+Set

[Stephen.Blair]

As I said, you cannot use trace sets with rayswitch like that. The user guide is wrong. That won't work.

[17350757759]

Thank you very much. I've been trying for a long time and I can't do it

[Stephen.Blair]

Oh, I forgot to say that trace sets do not control shadow rays. At least it didn't work in my simple test.

[17350757759]

Thank you. I think I get it