User guide

Control (UI) Default Value Function

applyWhen immediate Determines when the script is run:

• immediate - the script runs at the locations specified by the

CEL statement as they are evaluated at this node's point in the

graph.

• during attribute modifier plugin resolve - the script and

its arguments are added as attributes under the Scene

GraphLocationModifers group attribute and run later by the

implicit ScenegraphLocationModifierResolve filter added at

render time.

• during katana look file resolve - the script and its

arguments are added as attributes under the Scene

GraphLocationModifers group attribute and are evaluated by

a LookFileResolve node or by the first implicit resolver if no

LookFileResolve node is present.

Note: Plug-in resolve and look file resolve may be tested either

by enabling Scenegraph Implicit Resolvers in the Scene

Graph tab or with an AttributeModifierResolve or

LookFileResolve node.

• during material resolve - the script and its arguments are

added as attributes under the

material.scenegraphLocationModifers group attribute.

This is primarily intended for material Scene Graph locations.

The material resolve process evaluates the script at the

locations at which the material is assign or applied. This can be

useful for building randomization or procedural control over

shader parameters at the material level without having to

apply materialOverride attributes at the geometry level.

applyWhen: during attribute modifier plugin resolve, during katana look file resolve, or during

material resolve.

recursiveEnable No

initializationScript No Enables an optional setup script to be run before the first

location at which the attribute script evaluates. The user

module is available to store persistent data and retrieve

parameter values

2 NODES A-C | ATTRIBUTESCRIPT