Why dither node is in range [0-2]

Unity Engine
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1

Why not [0-1] like 0 complete black and 1 complete white ?
Right now it looks like I have to use number 2 for complete white.

2

The dither node returns a value between 0.05882 and 0.94117 (actually 1.0/17.0 and 16.0/17.0). It’s designed for dithering alpha, in which case it’s helpful to have a value range that’s not quite 1.0 for the highest value. Though I’m honestly not sure why it’s not a range of 0.0/16.0 to 15.0/16.0, there’s probably cases where not having 0.0 is useful too.

3

I’m talking about the input.

Why is it helpful ?
Actually I find it a little harmful if I cannot set Alpha Clipping to 1.

4

The usual use case for dithering in Shader Graph would be to set the Alpha value like you would normally for an alpha blended transparent object, and set the Alpha Clip Threshold twitch the output of the Dither node. If the Alpha Clip Threshold is 1.0, then something that’s “fully opaque” can have holes wherever the dither is 1.0 in some situations.

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