I cant seem to find out what its called but what I'm trying to accomplish is the glowing/blur effect on an object. Like a circle that is glowing and when moved it will give off a trail or hue. kind of like the Solorwinds Screen saver

http://www.geeklan.co.uk/images/solarwinds.jpg

Any ideas what its called and how i can achieve this?

I'm looking for the same thing.
Any help?

the glow looks like a gaussian blur, you could do this by rendering to a texture (eg with [pix_snap2tex]) and then using a fragment shader to blur it.

the trail is motion blur type thing, but to get the trails to get smaller like in the picture could be tricky - one "brute force" way would be to keep track of where the objects have been in the past and just draw them again only smaller.

@ClaudiusMaximus said:

the glow looks like a gaussian blur, you could do this by rendering to a texture (eg with [pix_snap2tex]) and then using a fragment shader to blur it.

the trail is motion blur type thing, but to get the trails to get smaller like in the picture could be tricky - one "brute force" way would be to keep track of where the objects have been in the past and just draw them again only smaller.

..or create 'feedback' with pix_snap2tex.