Community
Arnold for Houdini Forum
Rendering with Arnold in Houdini and Solaris using the HtoA plug-in.
cancel
Showing results for 
Show  only  | Search instead for 
Did you mean: 

Set light_color_shader through operator in houdini

3 REPLIES 3
SOLVED
Reply
Message 1 of 4
zenop
391 Views, 3 Replies

Set light_color_shader through operator in houdini

Hi,


I'm trying to set the light_color_shader parameter (ar_light_color_shader) on a skydome through an operator. I can't seem to get it to work. I assume it's because the ar_light_color_shader is a houdini concept and gets translated to the arnold universe in a different way. I imagine 'shader' is the parameter that needs to be set.


However, I'm struggling to assign a shader to the skydome this way. How should this be set up? I'm currently seeing the pink shader not found when using a set_parameter shader with arguments: shader='/path/to/shader/OUT_light'. Should I be using the OUT_light, or OUT_material node? I cannot seem to get either to work.


When I point the the ar_light_color_shader parameter to the OUT_light node it does seem to work. But how should this be done using an operator? Maybe I'm missing something obvious.


Thanks!

Labels (4)
3 REPLIES 3
Message 2 of 4
zenop
in reply to: zenop

It works with an assign_material operator. Not really sure why there'd be a difference.

Message 3 of 4
Stephen.Blair
in reply to: zenop

Operators work on Arnold nodes and parameters, so a raw set_parameter won't know about ar_light_color_shader.

If you look at an ass file, you should see your shader connected to the skydome.color parameter, that's what you would set with a set_parameter



// Stephen Blair
// Arnold Renderer Support
Message 4 of 4
julian.hodgson
in reply to: zenop

The assign_material operator assigns the root of the shader node graphs created by the material. This is required since these will have different names from the material itself.

Can't find what you're looking for? Ask the community or share your knowledge.

Post to forums