Just playing and learning … I’m trying to emulate a nixie tube … a piece of somewhat dated technology that used neon to display numerals.
Anyway, I’m using a plane mesh for the numerals that at the moment is colored red but I’d really like to give it a loud glow effect. I’ve tried multipass blending without much success and as it’s enclosed I need to preserve depth testing …
Any ideas ? (to see what I’ve done so far there’s a screensaver example at :