Okay, here is it: https://www.shadertoy.com/view/sfXGDB I just combined the corner point sampling and dilation kernel and do a Gaussian blur after that. Not 100% anti aliased, but better than straight boolean black/white I think. May using a different kernel instead of Gaussian blur makes it more smooth.

Press W,A,S,D to move around and UP/DOWN arrows to zoom in and out.

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Here we go. The thickness of the graph can now extended to it's neighbor pixels, thanks to morphology. One last thing is smoothing.

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Reimplemented in Shadertoy. Next step is to change the graph's thickness by applying a dilation kernel.

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https://art.pkh.me/2026-02-22-ascend.htm

#Shadertoy portage: https://www.shadertoy.com/view/33KBDm

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Obligatory animation using my SDF approximation of Keenan Crane's "Spot" model (pure shader code, not using a texture or mesh).
https://www.shadertoy.com/view/WXtBWf

#shader #shadertoy #glsl #webgl #graphics #graphicsprogramming #rendering