There are several ways to create a V-Ray Mesh Light.
You can use the button in the V-Ray Lights tab of the V-Ray toolbar. Right-clicking the V-Ray Mesh Light toolbar button releases or removes the Mesh Light from the original mesh.
The Asset Editor also offers creation of a Mesh Light from the Lights category. Once the asset is created, use the context menu to apply it to a selection in the scene.
UI Text Box
type
tip
It is possible to override a Mesh Light with another Mesh Light by using the Apply to Selection context menu option. Note that a Mesh Light can be replaced only by same asset type.
Creating a Mesh Light can be done from the Rhino's Property Panel where the V-Ray Properties reside. Select the object(s) in the scene and press the plus button under the Mesh Light option.
As with all other V-Ray lights, creation of a Mesh Light is possible via the Command line and the V-Ray menu.
UI Text Box
type
tip
Once a Mesh Light is created, it can be toggled via its asset icon as well as via the Toggle in parameters.