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2D Skybox

A Tutorial for Source Engine

Obsolescence Notice

The following is a mirror of tutorial content found on Interlopers.net; it is being mirrored for the sake of archival purposes, and is largely left in its original form with minor corrections.


2D skyboxes are very easy to make and are essentially walls with the skybox texture applied to them. In game it is rendered as a sky.

The brush must have the tools/toolsskybox texture applied to all sides in order to work correctly and the sky type can be applied using the correct sky name (see HL2 skies list) in the Map Properties->Skybox Texture Name.

Many people just drag a ceiling brush over the map and apply the sky texture to it, this would work but doesn’t give you room to expand upwards so it’s a better idea to leave some room, it won’t cost you anymore resources to do so as the skybox texture hardly makes any difference to the level resources.



As you can see it’s very simple to do and if you add a light_environment somewhere in the level it will light the areas of sky for you.

Another useful part of this method is when buildings are created at varying heights you can make them all fit neatly in with the skybox, have a look at my (very crude) street example.



That’s basically it, don’t ever drag a box around the whole map and hollow it as it will cause VVIS to render the outside of your level as well and waste level resources. Think of them as normal walls and seal the level as usual.
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Reverend V92 avatar
Reverend V92 username pic Joined 10y ago
HL2 Manager HL2:MMod Manager HL2:EP1 Manager HL2:EP2 Manager HL2:DM Manager SOURCE Manager OC Manager Syn Manager GMod Manager GMod 11 Manager GMod 13 Manager GMod 9 Manager
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22,176 points Ranked 240th
39 medals 2 legendary 7 rare
  • 2019 Top Contributor Medal icon
  • Returned 5000 times Medal icon
  • 2nd Place - A Bananite's Guide to... Contest Medal icon
  • 6 years a member Medal icon
  • Returned 1000 times Medal icon
  • Received thanks 50 times Medal icon
Archival, minor corrections
Special Thanks
Interlopers.net
Being a fantastic resource for modders

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Reverend V92 avatar
Reverend V92 username pic Joined 10y ago
HL2 Manager HL2:MMod Manager HL2:EP1 Manager HL2:EP2 Manager HL2:DM Manager SOURCE Manager OC Manager Syn Manager GMod Manager GMod 11 Manager GMod 13 Manager GMod 9 Manager
WAITING
22,176 points Ranked 240th
39 medals 2 legendary 7 rare
  • 2019 Top Contributor Medal icon
  • Returned 5000 times Medal icon
  • 2nd Place - A Bananite's Guide to... Contest Medal icon
  • 6 years a member Medal icon
  • Returned 1000 times Medal icon
  • Received thanks 50 times Medal icon
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