- norm[0-31] (normalized coordinate across dim);

- snorm[0-31] (signed normalized coordinate across dim).

But I don’t quite understand what they means.

Could someone help explain further ?

Thanks.

]]>norm[1] will spread a gradient from 0 to 1 across the y axis

snorm[0] will spread a gradient from -1 to 1 across the x axis

snorm[1] will spread a gradient from -1 to 1 across the y axis