gradient_deband

Breaks up the flat steps a smooth gradient shows at 8 bits, by dithering with a noise small enough not to read as grain. It reads and writes the scene's linear light, so threshold and grain — given in eight-bit code values — are read as that many 255ths of it.

Bindings

name	kind
scene_color	texture2d
deband_params	buffer, read vec4<f32>
deband_out	storage2d (rgba16f)