Six Faces, One Sky

Skies Are Surfaces Too

surfaceparm sky   detected and excluded from BSP geometry
skyparms         fully parsed for skybox texture paths

Six-face skybox textures load from PK3s (TGA, JPG, PNG), with coordinates converted from Q3's Z-up right-handed space into Babylon's Y-up left-handed one.

Commands: bsp sky, bsp sky info, bsp sky apply, bsp sky toggle, bsp sky remove.

Tested on Warsow's wdm11 with textures/sky/stormydays.

Each face needed its own transform, which is the sort of detail that turns into a one-line bug report later: side faces use flipH, the ceiling uses rotate90CCW_flipH, the floor uses rotate90CW_flipH.

The Discovery

Babylon.js RawCubeTexture uses face order
[nx, px, py, ny, nz, pz]  (not commonly documented order)

Known Limitations

• ▸Skybox texture PK3s such as tex_env.pk3 must be manually loaded before

applying the skybox.

• ▸Cloud layer animation (tcMod scroll) not yet implemented.

That second one is the only entry on this list that reads like a to-do written by somebody who already knew how to do it — which, nineteen days later, they did.