Doom Builder 2 Sky issue

[AleksB]

Hey fellow Doomers!

 

Im having an issue with using outdoor sky textures.  Im building a big outdoor area and I go to use a sky texture and when I go and test the map, it just shows the texture on the ceiling.  It doesnt show as a sky in doom.  Im stumped and havnt found any videos or forums that go over this issue.  If someone could guide me in the right direction, that would be swell.  Thanks!

[scifista42]

You need to put a flat named "F_SKY1" onto the ceiling to display an actual sky there. If you want to change the displayed sky texture, see this post.

[AleksB]

4 minutes ago, scifista42 said:

You need to put a flat named "F_SKY1" onto the ceiling to display an actual sky there. If you want to change the displayed sky texture, see this post.

Thanks for your help it worked.  Just outta curiosity, why cant you just use any sky texture initially?  Why do you have to use "F_SKY1"?

[scifista42]

Because the original engine was designed that way. Probably for simplicity of implementation. Check whether the currently processed flat's name matches the hardcoded name "F_SKY1", and either draw a (specific pre-selected) sky if yes, or draw a regular flat (with the given name) if not. It's both simpler and faster than going through a whole list of texture/flat names to find out the "type" of the currently processed name.