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When this parameter is added to materials, it will tell VRAD to not compile a Lightmap page for that material, which saves compile time. Valve introduced this parameter with Alien Swarm, using it with tools/toolsnolight.vmt, the black areas you see in the levels.

Note.png Note: This parameter is also available in Source 2013.

Useful for LightmappedGeneric where you need to use some parameters that UnlitGeneric lacks.


   %compileNoLight                         1