1. Either import or create a Geometry LOP node (e.g. “box”).
2. Add a Render Geometry Settings LOP.
3. Go to the V-Ray tab and enable any option.
4. Switch to the V-Ray Hydra delegate.
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When working with Solaris, make sure to specify the correct Primitive path in the Render Geometry Settings LOP when attempting to apply those parameters.
The parameters that correspond to a USD attribute have a pop-up menu that controls how the LOP node authors the attribute:
Set or Create – Sets the attribute to a given value, regardless of whether the attribute previously existed or not.
Set if Exists – Sets an attribute to the given value only if it previously existed. Use this option to make sure the attribute is set on primitives of the correct type.
Add if Exists – Adds an existing value to the attribute.
Multiply if Exists – Multiplies the attribute value only if previously existed.
Block – Makes the attribute appear to not exist so it takes on its default value.
Do Nothing – Does not affect the attribute, i.e. does not create or change the attribute in any way.
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The V-Ray tab contains the following sub-tabs:
Main – This
Main
This tab allows you to adjust the render settings per object-basis.
Displacement and SubdivisionThis Subdivision – This tab contains settings for controlling displacement and subdivision on objects.
Mesh LightThis Light – This tab contains settings for controlling mesh lights.
Clipper
This Clipper – This tab contains settings for controlling clipper.
Matte/ShadowThis Shadow – This tab contains settings for controlling matte/shadow.
Visibility
Visibility – This tab contains settings for controlling the visibility of the object, e.g. how transparent it is to different rays or whether it casts shadows.
Hair
This Hair – This tab contains settings for controlling hair properties of curves or points/particles.
Particles
This Particles – This tab contains settings for controlling particles.
LPE
This LPE – This tab contains settings for adding light path expressions tags. Find more information about what the light path expressions are at the Introduction to Light Path Expressions page. For more information about how to use LPEs, see the Advanced Light Path Expressions page.
Toon – This tab contains settings for controlling toon effect overrides of specific geometry.
