Wow, very cool. What's it for BTW?

The last screenshot is sweeeeet.

Great work!

Awesome! I can't wait until you're finished!

And what did you mean, "starting to look cool"? It looks cool already!!!

Wow, that is freakin' sweet! Keep up the good work.

I had the same problems with the atmosphere shader.
That's because of midpoint integration. That was why I introduced these clamping values, but they didn't help much.

Did you already apply the atmosphere shader to the planet?

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Wow, very cool. What's it for BTW?

A science-fiction game (think: Elite)

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I had the same problems with the atmosphere shader.

Oh, that's good to know, because the shader is a simplified version of yours (only one ray/sphere intersection test, and even that one is a specific case of the general ray/sphere test), so i was thinking it could come from my "optimizations".

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Did you already apply the atmosphere shader to the planet?

Yes, but due to the low tesselation, it doesn't look always good. I have to reimplement the terrain/atmosphere LOD before i can make a good screenshot.

One thing that weirds me out is how the atmosphere's default color (i.e. at the unlit side) is black. Now, I realize that this might very well be the case in reality, but I think it would look amazing if it was see-through instead.

Still awesome, though.

You're making a good point, i didn't think somebody would notice :) We don't have this problem in reality, because space is very black, so you don't see in photos the dark atmosphere "glowing" like that. I can fix it, but it'd require rendering the background to a texture, or splitting the scattering in two pass, and both are bad for performance. I'm not sure i'm ready to afford it..