Yesterday I shared a tutorial on making some glowing, animated cylinders. I composited some ghost blur on them, and it looks great, but it really bothered me that the cylinders were so ‘solid’ as emitters and I had to composite the glow on afterward.
So I made a new material.
First I made an emitter out of this sphere: (generic settings)
Then I mixed it with transparency:
But that did nothing that I wanted, it just dimmed the emission (and kinda made it see through) So I added the ‘Layer Weight input and stuck that in the factor for the mix:
and now, we are talking. Notice that slight blur on the edges, that’s what I’m looking for. So I cranked up the Blend setting on the ‘Layer Weight’ input and came up with this:
but now the sphere was really dim, so apparently the more transparent the less light it gives off, fair enough, just crank up the emission:
and viola, glowy sphere of light without hitting the compositor.
Try it out on some other shapes and get some interesting results:
All of those were with untweaked settings as follows: