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There may be a performance penalty for using this node in many places in your scene. Efficiency is key to avoid too many evaluations of user attributes if not necessary. |
Input Parameters
Variable name
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resultRGB
The color result.
Example Usage
DCC applications may use a different mechanism for applying a user attribute. Below are two examples for applying a color user attribute named "Ball" to a shape:
Maya:
Add a Pre Shape MEL user attribute to the shape using the Attibutes > RenderMan menufrom the Maya Attribute editor transform node, Name: Ball Type: color Color: Light Pink. The resulting export is below, note that we assume a User attribute from the Maya Editor automatically and does not need to be specified.
RiAttribute "user" "color Ball" 1 0.2 0.65
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gb = GroupBuilder()
gb:set("value", FloatAttribute({1.0, 0.2, 0.65}, 3))
gb:set("type", StringAttribute("color"))
Interface.SetAttr("prmanStatements.attributes.user.Ball", gb:build())
Houdini:
See Using PxrMatteID as an example of how to add user attribute in Houdini.
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