Improved Default Cubemap

The fallback cubemap that has plagued incomplete and broken maps since 2004 finally gets a makeover! I made one that doesn't stick out like a sore thumb in most lighting conditions.

Now you can use broken maps without burning your eyes out before they're fixed.

Replaces

materials/ENGINE/defaultcubemap.vtf

No more "glowing props"!

• Still ugly and wrong, but less ugly
• Works in LDR and HDR maps (using a single texture)
• Uses sky_day02_07 skybox from Half-Life 2
• Neutral color and low saturation
• Better sky/ground separation
• Nondescript ground appearance
• Similar overall luminosity (Doesn't look any worse in dark areas than the original.)

Mappers, JUST BAKE YOUR %$@& CUBEMAPS

This DOES NOT magically "fix" broken or missing reflections in maps that haven't baked/included their own cubemaps correctly. They will always look wrong until that happens.

They are very easy to add, even for beginners. You are a bad mapper if you don't. ** If you are seeing this texture somewhere, please tell the map author to bake their cubemaps. **

Guide for mappers to troubleshoot cubemaps because Workshop breaks them for no reason sometimes: https://steamcommunity.com/sharedfiles/filedetails/?id=861820969

Regardless, I hope this comes in handy for when the fallback cubemap does rear its ugly head.