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Autodesk / sitoa

Arnold plugin for Softimage
Apache License 2.0
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Hidden lights still visible in camera and transmission #86

Closed JenusL closed 3 years ago

JenusL commented 3 years ago

Support for visible are lights were added in Arnold 5.3. In SItoA we always export all lights but set the intensity to 0 on hidden lights. This causes the light to disappear in Reflections, but it is showing up as black in Camera and Transmission. Workaround right now is to just set camera and transmission to 0 as well on hidden lights, But I still got some questions...

  1. Why is Specular / Reflections just additive? Is there any plans to change this?
  2. What is the proper way to disable a light in Arnold?

@sjannuz Maybe you got the answers for me?

sjannuz commented 3 years ago

Back in the days, that was the simpler way to support lights' enabling/disabling in IPR. But that was long ago, many enhancements have happened in Arnold around IPR support, including destroying and creating lights. As it is, a more modern way to disable a light without destroying it is probably AiNodeSetDisabled.

JenusL commented 3 years ago

I tried AiNodeSetDisabled. It makes sense to use that in IPR but it doesn't work as expected when exporting to .ass. Do you think I should just skip exporting hidden lights when not in IPR?

JenusL commented 3 years ago

So I tested how it works in MAXtoA and there hidden lights are not exported at all. So I'm gonna do that here as well.