How can I make a shader that shows edges of a plane?

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:bust_in_silhouette: Asked By gravit22

Hello.
I need a shader that marks edges of a plane. Ideally, the body of a plane should be transparent, and edges are visible(dark). Also, the thickness of an edge should be adjusted.
Thank you for your attention.

Is your aim to give something an outline? If so, maybe this shader would help you.

Ertain | 2022-09-27 12:25

There are also quite a number of other outline shaders on the same site. For instance:

https://godotshaders.com/?s=outline

jgodfrey | 2022-09-27 16:52

For some reason, I have no option to get an actual shader on the site.
enter image description here

gravit22 | 2022-09-28 09:48