Rendering mesh with stroke effect

What is the preferred way to render a 3D mesh with a stroke effect between vertices?

for example, this seems to be built in to processing (and related frameworks). Here is an example from p5js:

function setup() {
  createCanvas(640, 360, WEBGL);

function draw() {
  fill(80, 10, 120);

I believe OpenGL has a wireframe mode, but it only works without fill (the faces are transparent).

I think I could achieve this effect by first rendering the mesh normally and then rendering some LineSegments between the desired vertices, but I’m wondering if there is a better way.

By the way, I also tried the ContourRenderer in orx-dnk3, and it’s very cool! but not quite the same effect:

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