Well, something like that but more sophisticated when the exporter detects that some or more spotlight has the volumetric feature turned on it will create a bounding volume that contains the lights with the suitable mesh emitters (but the volume medium would be shared between lights at this moment),...
Hi all LightWavers, I'm here to end ur frustration! Development begins by me on a LightWave exporter for Indigo renderer It will be easy, integrated, powerful and even volume lights will be supported! Complete translation of objects and materials and animation support! cheer up! it's coming soon to ...