Seamless skyboxes without multiple parts?

[Baron T. Mueriach]

How do certain one-texture skyboxes work? Like all of DOOM 1 & 2's skyboxes are just one image, and when repeated are not seamless, but appear completely seamless in game. I have seen other skyboxes that are multiple parts stitched together, instead of SKY1 it's SKY1A, SKY1B, SKY1C, SKY1D.

 

I'm not really trying to make any, just kind of curious on how it works. Although it'd be pretty nice to know so it won't be very hard next time I want to make an effortless skybox.

[Rifleman]

As long as you have the pictures, it's as simple as this: https://zdoom.org/wiki/GLDEFS#Skybox_definitions. Getting those is another thing. Some you can find on the web though.

Edited April 1, 2024 by Rifleman