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To create a mesh light in Solaris place down a PxrMeshLight LOP node and assign the mesh primitives you wish to turn into a light.

Inside the node you will find similar parameters to the normal Solaris Light LOP (exposure, intensity, color). 

You may find that the mesh is illuminating the scene (and self illuminating) but does not emit light in the camera.

The mesh camera glow is controlled by the material so you may want to set something in the glow parameter of the PxrSurface material. This gives you greater control of how the object looks to the camera and how it illuminates the rest of the scene.

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