Dynamic Skyboxes

Hi,

don’t know if this is in the right section but yea…

If you go to this video you will see a timelapse of RDR.

Go to 0.16 min mark and you will see big clouds rotating in the back only at the lower end of the skybox.

https://www.youtube.com/watch?v=pROWml_4sYQ

My question was how rockstar implemented this ?

Are they using some kind of half sphere with a normal alpha channelled difuse texture on it and rotate it slowly ?

I investigated this myself by launching the game and waiting for these clouds to come up.
Then i drove a little around and then i saw in the distance that this clouds sphere was intersecting with the terrain so my answer to the “using sphere” was answered they do use it.

Then the remaining question was if they used one texture with many clouds on it and uv-map it so that there are different clouds on the sphere or just one texture once uv-mapped.

Ide like to know what you guys think of it.

-Kilian

Never mind guys i have made a working “skybox” that is just like the one from red dead redemption.

The problem was that the uv-mapping was screwed.

Pictures!!!