User attribute name – Specifies the name of the user attribute that is looked up and returned from this shading node.
Default color – Specifies the color to return if the user attribute is not found on the shaded object.
Required format for attribute name – Displays possible formats for the attribute in the V-Ray User Attributes string assigned to the object and what is rendered as a result.
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How to Render Vertex Colors
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The VRayUserColor texture can be used to render objects colored with vertex color painting.
Here is how it’s done:
Create a VRayMtl and assign it to the object that has painted vertex colors.
Create a VRayUserColor texture and link it to the Diffuse map slot of the VRayMtl.
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3. Open the Color Set Editor from Mesh Display > Color Set Editor and select the object in the viewport. This displays the available color sets in the Color Set Editor dialog.
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4. In the Color Set Editor, copy the color set name by double clicking on it and then pressing Ctr+C.
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5. Paste the name in the User attribute name field and render.
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Notes
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Fancy Bullets
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When rendering with IPR GPU, VRayUserColor supports setting UV and color sets from proxies and regular geometry.
