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Trying to extract HSL data from a single-pixel float32 matrix, which was set by a swatch object providing normalized ARGB values to it.

The saturation reported by jit.rgb2hsl gives only 'binary' results, i.e. 0.0 or 1.0.

jit-rgb2hsl-saturation-not-working

because you're not affecting the saturation level. change the swatch saturation to see it change in the output:

I think this is more of my confusion with the design of the swatch object. I understand that it uses a discrete saturation attribute, and that it depicts luminosity along the vertical axis. But the top half of the swatch, even at Saturation=1.0, depicts a tapering off of saturation visually. The output RGB values, when converted to HSL in Photoshop, also report a reduced saturation.

For the jit.rgb2hsl conversion, it just seems visually odd that a RGB color picked near the top of the swatch (a perceivably desaturated color) would output the same saturation value.

Interestingly, the jasch hsv2rgb object documentation helped visualize this relationship, and the object itself did what I expected jit.rgb2hsl to do.

jit.rgb2hsl - saturation not working?