More progress: I took a break from my dark side Juhani mod and instead of going back to the Onderon clouds, I decided to start working on the Dxun skyboxes. Skyboxes you may ask? Yes, there are actually two skyboxes for Dxun and I intend to make use of that fact. One is used for the biggest part of Dxun and one is used for the Sith tomb part.
I mostly worked on the "normal" one and both terrain and sky took quite a while before they were in the current almost finished state. Here's an in-game shot from a slightly outdated version and as always rendered in low quality:
I really like the way the clouds turned out in the end, although they might need some more contrast in-game. The mountains (you can see only one in this picture) were changed since I took this screenshot and I will also move this big mountain more to the right so that it stays where it is in the vanilla skybox.
To show these changes. Here's a render of the latest version:
It's a little hard to see due to the low resolution but I changed the mountain color from grey to brown for it to fit with the modeled mountains in-game. Then I also made the mountain smoother, once again to better resemble the in-game mountains. And I removed the trees from the very top. This is now pretty close to what I had in mind, so I'll probably leave it for now and once I get back to it, I'll work some more on the colors.
And finally, here's a preview of some experiments I did with the stormy skybox for the tomb. I want this skybox to feel like a real thunderstorm so apart from using a different cloud setup, I figured it'd be nice to also see rain showers in the distance, which is what I was playing with when the following render was created:
The current clouds in this shot are taken straight from a post by rcalliotte on the planetside forums and I'll definitely modify them or create my own from scratch as I'm not very happy with those yet. But the important thing here is the red part: The rain. It's obviously not going to stay red. That's just for better visibility. But apart from being rendered with way too low AA and generally low quality settings, it does seem very promising. I'll have to play around with the height to make sure that the rain actually starts at the clouds and not below but then it should work quite well. For those interested: The rain is really just an inverted and vertically stretched cloud with a very small scale and masked by the actual cloud shader so that it appears only where those are thickest.