In the File > Export All Optionswindow, set the File Type to USD Export and choose whether the materials are exported as USD Preview Surface or as V-Ray materials. You can export all materials in the scene as one or multiple types of networks.
Alternatively, you can use the V-Ray menu's Export Materials to USD option. For more information, please visit the Export Materials to USD page.
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Exporting lights to USD does not require the V-Ray Material Exporter to be selected in the Export to USD menu.
Disable the Merge Transform and Shape Nodes option from the Advanced rollout for a cleaner hierarchy , export, and correct rendering of and export. If you are using a version of V-Ray for Maya prior to 6.20.01, the Merge Transform and Shape Nodes option needs to be disabled to correctly export VRaySubdivisions.
When exporting objects with applied V-Ray Displacement, the displacement is exported along with the shaders. In this case, make sure the V-Ray materials option is enabled.
When exporting objects with an applied Subdivision attribute, the subdivision is exported separately from the shaders. In this case, enabling the V-Ray materials option is not mandatory, as it will not affect the export of the subdivision surface.
When exporting objects with applied Subdivision attribute and V-Ray Displacement, the subdivision and displacement are exported along with the shaders. In this case, make sure the V-Ray materials option is enabled.
