Shader to create an offset, inward-growing stroke?

[lunch]

Hmmm, interesting… I saw a few links which tackle antialiasing through the shader, but they all use standard derivatives:

https://www.desultoryquest.com/blog/drawing-anti-aliased-circular-points-using-opengl-slash-webgl/

http://madebyevan.com/shaders/grid/

GitHub - glslify/glsl-aastep: anti-alias smoothstep utility function

I had trouble trying to enable the standard derivatives extension in three.js, which led me to this:

Enabling extension with onBeforeCompile

Here are some breadcrumbs regarding this problem: Since you can replace #include <foo> replacing stuff in global might make sense, the problem is global is injected in both vert and frag so you can’t really inject attribute vec4 foo there, one idea for solving this : This one added a lot of new chunk names so it could be more granular (like there could be a chunk named #include <user_provided_extensions>: The code that breaks this: @Mugen87 is this something that could be gradually shuffl…

Still no luck