Mesh lights only work when rendering

TheMageWilliam

My preview does not show the emissions (light) from the mesh lights, even when I switch from texture to Iray. The only way to see how the mesh lights are working it to begin rendering the scene, and even when I have my screen set up with Iray it takes a couple of minutes before the first render even appears. 

But even if it was quicker, starting a render every time I needed to check a small adjustment  like trying to dial in the lights would multiply the time spent doing things I should be able to do in seconds

Richard Haseltine

In the Draw Settings pane, while the iray Preview is active, set the Draw Mode to Photoreal - Interactive omits several things, including emissive surfaces.

TheMageWilliam

Yes, that was it, thank you.