The pack
postGrain
function postGrain(): Pack<{}>
Post effect grain: film grain. Requires post. Params amount (0..1, default 0.04), size (grain size in
display pixels, default 1.5, min 0.5), speed (new grain per second, default 24; 0 freezes it), colored
(0 mono to 1 chroma, default 0) and response (0 flat to 1 filmic, default 1).


