Is this a luminescent layer, similar to the outer rectangular edge emitting light

[wudao]

Similar to adding an external layer to irregular shapes

Can we create an effect similar to the one shown in the picture without emitting a glow
Thank you, Babylon, for giving me some advice
https://playground.babylonjs.com/#MXWIF2#2

[Evgeni_Popov]

You can also use the ouline renderer (mesh.renderOutline = true) or the highlight layer.