Maybe there is something I am missing, but is there a way to make a simple circle of light? Like a spotlight, except without light in the center of the spotlight. A donut shaped light projection. Is there an easy way to do this?
Nope, there is no built in way to do this.
The only way you could do this is by using a spotlight and occluding the “middle” part with a sphere and using PSSM so that the occluding object would cast a shadow. That’s if you really need a light.
Other than that, you could use the Unshaded material and do a variation on the alpha of an image that looks like a donut. That might work.
I will think about this and come back to it later. I thought that making the inner range larger than the outer range would do it, but it doesn’t. Feel free to post if you do come up with any great ideas.
@normen said:
Yes there is spotlights.
I don't think anyone is refuting the existence of spotlights. ;)
Like a spotlight, except without light in the center of the spotlight. A donut shaped light projection.
@madjack said:
I don't think anyone is refuting the existence of spotlights. ;)
The projection display is defined by an image I think, if you can live with all spots looking like this I suppose you could change it.
All spots like that wouldn’t work, I just need a few. Thanks though!
Could you do this with baked in lighting or does it need to be dynamic?
I guess if you set the inner angle of the spotlight greater than the outer angle, you’ll have a yummi donut. 
You could also use Projective Texture Mapping.
what are you trying to do exactly?
If you want a circle to highlight a selected character, you’re better of with a texture on a quad…
A quad will work, that’s a good idea. I guess that’s even better than what I was thinking because then the image can be displayed in the air easily too.