At a glance:  GEOFORMS

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A screensaver I wrote at Nvidia, featuring richly-shaded, music-driven metaballs (or blobs) with a psychedelic, procedural background (kind of like Geiss running on a cubemap). Lots of hi-tech graphics features such as HDR motion blur, depth peeling, refraction, sub-surface scattering (of light), procedural noise and marble, and more.

GeForce 7800 recommended; GeForce 6000 or later required.