how to change sky textures

[Infernale]

hello fellow doomers. I am relatively new to doom mapping (like a year not even) I was wondering how to change sky textures in doom 2 maps specifically how to import custom sky textures into doom maps. I've seen videos on how to do it and I've tried but nothing changed. just so you know what I'm working with I'm using slade and doom builder. 

[ViolentBeetle]

First of all, to manipulate content of the wads, you need SLADE3.

Sky texture is actually a wall. Wall textures in Doom work kinda complicated, they are defined inside TEXTURE1 lump and made out of one or more "patches" that contain graphics. The pick for skies are hardcoded based on map number and textures are called SKY1 SKY2 and SKY3 respectively. Each of them are made out of single patch called RSKY1, RSKY2 and RSKY3 respectively.

 

So, what exactly do you need to do depends on whenever your sky texture is the same dimensions (256x128) as original. If so, you can just put it in as RSKY1 between PP_START and PP_END markers and it will replace the original. If not, you'll need to import original PNAMES and TEXTURE1 lump and edit SKY1 there. The interface for texture editing is pretty intuitive, I think.

[Infernale]

ok, I see now. thank you!