My concern (which probably involves the word 'masking' at some point) is that anything that's not 'tank' or 'scenery' or whatever, I don't want "gradiant filled circle" to appear on. At the moment I'm trying a solid white circle and additive blending it onto the scene and it appears to display 4/5ths of stuff-all. :o(
Since you mentioned 'additive blend' though, I shall bash my head against that specificness for a bit longer and see what happens.
Since you mentioned 'additive blend' though, I shall bash my head against that specificness for a bit longer and see what happens.