This short tutorial will cover how to use the set_parameter, collection, and disable operators to change the lights and self-shadowing of some teapots and alter the shading of the sphere. The scene contains two lights casting shadows on three teapots and a sphere with a simple utility shader assigned to it. Use the Ignore Operators flag in Diagnostics> Feature Overrides to check what the render looks like without any operators.
Collection
We will use the Collection operator to reference a selection. This can be used to avoid writing a selection multiple times (optional in this case).
Set Parameter (Disable Self Shadows on the Teapots)
Create a Set Parameter. Create the following expression:self_shadows=false
Disable Light
We can turn off one of the lights by using the Disable operator.
Set Parameter: Sphere Utility Shader
Now we will change the Overlay Mode for the spheres Utility shader.overlay_mode="wire"