Plasma

A classic 90s demoscene plasma background: layered sine/cosine fields over space and time sum into a scalar that indexes a smooth looping palette, so flowing color bands both deform and palette-cycle — organic, hypnotic, seamless. The pointer subtly warps the field. Tasteful cool duotone-to-tritone by default, full psychedelia via the colors knob. Original OGL fragment shader, tone-mapped, dithered, DPR-clamped, offscreen-paused, reduced-motion-safe; a ghost pointer keeps it moving when untouched.