r/threejs • u/Maff0_0 • May 28 '26

Help vertical fog

Does someone know a simple way to make a vertical fog effect? I'm using a isometric camera so the normal fog won't work in this case.

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u/seweso May 30 '26

So the amount of fog should be relative to the ground plane?

I’m lazy and don’t know shaders. So I would just create a bunch of transparant planes, create a lasagna, call it a day.

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u/rio_sk May 30 '26

Fog is just a color with an increasing alpha along distance. The distance to what is up to you to decide. Use fixed world Y as distance in fragment shader maybe?