GIMP Cubemap Problem...

[Statyk]

Well, the exporter did better than last time, but I don't recommend using DXT1 with it =P DXT3 and DXT5 worked much better, but the compression is still damaging the quality... Hmm...

If you want to check out what I mean, here's a comparison shot using YC's Python script for GIMP 2.8:

Spoiler below!

As you can see in the DXT3/DXT5 compression, the halo around the moon gets discolored and not as smooth as depicted in the editing software. As well, (it could be the renders here) a bit underneath the blue axis sphere, you can see where a corner of the cubemap meets due to discoloration. This isn't as noticeable in daytime skyboxes like I said, but in a cloudy night time situation, it stands out pretty bad...