Hello, glow is an additional process so this should work out of the box as long as your transparent objects have emissive color.
is it a shader?
if so maybe something like this?
Outer light emitting and transparent with a gradient this effect how to achieve it
is what that was in English(source: google translate).
for a path with lines you can use a texture directly on planes or ribbon ?
mmh I was trying to make a very simple example about putting the diffuseTexture with alpha, setting an emissiveColor, and adding a glowLayer, but I don’t understand why the glow appears only when I disable the diffuseTexture?
The glow layer like highlights do not support alpha blending:
ok so, simply add an emissive color + a glowLayer do the trick https://www.babylonjs-playground.com/#6WDNN5#5
glow No gradient
So why not using just a texture on a plane ?
It could work nicely with planes (it is basically what particles do)
Transparency failure when using glow
but without the glow, you bake it in the texture.
The result is good.
CreateTube Transparency failure when using glow ！
Hence why we were discussing planes !
From your first picture, we are seeing planes not tubes on the arrow. For tubes you could try using opacityFresnels and emissive
Don’t forget the DefaultRenderingPipeline too, with Bloom effect available.