An issue with cubemaps
I'm currently attempting to make a level similar to sp_a3_03 (the one with the lake), but every time I have a cubemap in the level, I get this:
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Running command: "C:\Program Files (x86)\Steam\steamapps\common\Portal 2\bin\vbsp.exe" -game "C:\Program Files (x86)\Steam\steamapps\common\Portal 2\portal2" "c:\program files (x86)\steam\steamapps\common\portal 2\sdk_content\maps\sp_a3_interaction_with_interludes_part1"
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CDynamicFunction: Loading library 'Kernel32.dll' (764C0000)
CDynamicFunction: Lookup of 'TryEnterCriticalSection' in 'Kernel32.dll': 77AE0AD0
Valve Software - vbsp.exe (Nov 17 2022)
8 threads
Using shader api: shaderapiempty.dll
materialPath: C:\Program Files (x86)\Steam\steamapps\common\Portal 2\portal2\materials
Loading c:\program files (x86)\steam\steamapps\common\portal 2\sdk_content\maps\sp_a3_interaction_with_interludes_part1.vmf
ConVarRef gpu_level doesn't point to an existing ConVar
Patching WVT material: maps/sp_a3_interaction_with_interludes_part1/nature/blendrockdirt_tunnel03a_wvt_patch
fixing up env_cubemap materials on brush sides...
Generated env_cubemap patch name : maps/sp_a3_interaction_with_interludes_part1/maps/sp_a3_interaction_with_interludes_part1/nature/blendrockdirt_tunnel03a_wvt_patch_2496_-2816_-3000 too long! (max = 128)
EDIT: As it turns out, all I had to do was shorten the map's file name.