Cubemaps (Source 2)
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This is a draft page. It is a work in progress open to editing by anyone.
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An example of specular reflections on some models (exaggerated through
r_showenvcubemap).A cubemap is a texture that represents a three-dimensional rendering of an area. 
Source 2 has Env_cubemap_(Source_2) ent_cubemap and/or env_cubemap_box entities as sampling points to generate these textures, which are then integrated into the map file. Cubemaps in Source 2 are also parallax corrected if env_cubemap_box is used.
Todo: Document about env_cubemap_fog.
Building cubemaps
[Todo]