Quote - Interesting tutorial.  I would wonder how it would work if you selected some of the windows, setup a new shading domain and mixed some glow into the texture without lights lights at all?

 

Good point. In fact I almost started the tutorial saying that would be the easy way, vs the way I'm showing which is the hard way.

The method you suggest is excellent for a quick result. The method I've explained is useful if you have more time to spend as you can vary the result (and the bleed into the surroundings).