Houdini 20.0 Nodes VOP nodes

MtlX USD Primvar Reader VOP node

MaterialX flavor of USD Primvar Reader

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Since 19.0

The MaterialX implementation of the USD Primvar Reader, which is part of the USD Previe Surface spec. Functionally it should behave very similar to the USD Primvar Reader and MtlX Geometry Property Value nodes.


  • The signature must match the primvar type, otherwise the shader will use the Fallback value.



The value type of the primvar


Primvar name.


The value to use if the primvar is not defined on the geometry.

See also

VOP nodes