Composite & texture

Luma Dust

Canvas overlay. Dense square particles spawn from the frame center and spread outward. Most of the grain budget sits on the brightest luma; a reserve stays free so new almost-white highlights cast immediately in that highlight’s color. Grains sit on that spot and leave when its luma changes — they do not chase the light. Free grains fade out before they leave the frame.

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Screenshots

Code	Parameter
`AMT`	Amount Particle visibility
`HOLD`	Hold How much luma change they tolerate before leaving
`LEAVE`	Leave How soon they drift off if the highlight stays
`BURST`	Burst Scatter strength on triggers
`TURBUL`	Turbulence Noise wander after they leave
`SPECTR`	Spectral Prism / rainbow tint and RGB fringe
`SIZBRI`	Size / Brightness Grain scale and lift
`DENQUA`	Density / Quality / Trail Particle count and persistence (advanced)

Luma Dust

Live Luma Dust on a looping clip. Click to mount the scene player.

Hover the stage for clip transport. Space, arrows, and F only apply while the demo is focused. Audio-mapped params stay at their base amount. Flashing imagery.