SKYBOX issue

[CrocketRocket]

I managed to get a skybox working in slade however the issue I'm having is trying to get it to 512 x 128 and it keeps showing up as this with the a line in the middle. Anyway I can fix this issue.

 

 

[DOOM mapping enthusiast]

The edges of Sky textures must tile seamlessly, else the result you get.

I use Paint Shop Pro 8 which has a facility build-in which does exactly that.

This may also be possible with Paint.Net or Gimp.

One possibility.

 

If you cannot find anything to do that, then upload the sky texture and somebody will do it for you.