Efficient smoke trail (for sky writing)?

I need to create an effect like smoke, but it needs to be the sort of stable, solid-looking smoke used for sky writing.

5821285--616828--upload_2020-5-8_7-35-44.png

But not so solid and smooth that a LineRenderer seems appropriate (but correct me if I’m wrong).

And this is for a Quest game, so it needs to be very efficient.

How would you approach this?

Does the user see the writing being written?

Possibly a particle system, maybe with sub emitters, could make this kind of effect.

Yes, in fact the user is up close and personal with it (it’s a sky-writing mini-game in VR).

I’ll look into that, thanks for the tip!

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If a game object transform followed the path of the letters being written, then you could use rate over distance emission, zero start speed, and enable/disable the emission module as necessary when moving between letters.

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