Joao S. O. Bueno Calligaris wrote:
There are no places on the image to store the information you want. An image is made out of pixels - what is freferred as sub-pixels is the ability to fill a pixel partially - not of subdividing a single pixel into more than one shade of gray. Darw with the pencil tool instead - you will notice the difference.

Well yes, in the end result, the smallest element is a pixel. But with
sub-pixel positioning, of course I mean adjusting the shade of gray on
each side of the curve I'm drawing. Anti-aliasing.

So simplify my explanation, I will provide yet another example... :-)

This time I chose to illustrate my point with a curve. Guess which one
is hand drawn and which is a stroked path.

The path is stroked with the brush tool, 3x3 soft brush. The exact same
brush is then used in an attempt to paint and identical line by hand. I
see no reason why I should not be able to produce the exact same result.
The stroked path does not care about pixel boundaries, it simply adjusts
the shade of gray to follow the path more closely.


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