v1.5

v9.0 (2011)--see SetReference2

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Sets reference parameter values for a shader. Reference parameter values occur only for shaders and are specified with 'type = reference;' in the SPDL file.

Use this command when you need to set a reference to a scene object when applying a shader that uses object references. For example, the Lightning shader defines start and end points that you link to items in the scene explorer.