How to Create Custom Textures for the Source Engine – LambdaGeneration
L4D themed map for Gmod. I Need both a light_env and light_directional but light_directional is "obsolete" in Gmod's hammer and the lighting is bad. How would I fix this? : r/hammer
How to Create Custom Textures in Hammer Source by Keith Garry
Left 4 Dead Authoring Tools | Left 4 Dead Wiki | Fandom
L4D Level Design/Level Standards - Valve Developer Community