Put rainbows and halos in the weather #268

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opened 2026-10-26 09:10:08 +00:00 by sermuns · 1 comment

sermuns commented

2026-10-26 09:10:08 +00:00

Owner

How it fits. The weather system knows rain, sun and the camera's view direction. A rainbow is a screen-space arc centered opposite the sun, gated by rain and a low sun; a halo is a ring around the sun or moon in the sky shader. Both are present-pass effects, like the drone feed, and neither changes the simulation.

Scope.

A rainbow after rain, opposite the sun, fading with the rain.
Sun dogs and an ice halo on cold days.
A moon halo at night.
A subtle version that does not wash out the scene.
A manual weather override for films.

Related. #48 (rain), #189 (puddles), #219 (fog), #220 (thunderstorms).

The best moment of a rainy day is the one after it: the sun comes out, the air is full of water, and a rainbow appears opposite the sun. Halos around the sun and moon are the same kind of reward, and they cost nothing but a shader. **How it fits.** The weather system knows rain, sun and the camera's view direction. A rainbow is a screen-space arc centered opposite the sun, gated by rain and a low sun; a halo is a ring around the sun or moon in the sky shader. Both are present-pass effects, like the drone feed, and neither changes the simulation. **Scope.** - A rainbow after rain, opposite the sun, fading with the rain. - Sun dogs and an ice halo on cold days. - A moon halo at night. - A subtle version that does not wash out the scene. - A manual weather override for films. **Related.** #48 (rain), #189 (puddles), #219 (fog), #220 (thunderstorms).

sermuns added the

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feature request

physics

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2026-10-26 09:10:30 +00:00

sermuns commented

2026-10-28 01:03:57 +00:00

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Owner

Closing as not planned. This is not something the project cares about.

sermuns closed this issue