Shaders are in a very dire state

[theOneTrueFunniBoi]

The SDK lacks many of the required shaders, and some of the shaders do not even compile correctly (lightmappedgeneric after compilation is completely missing basetexture2, detailtexture, bumpmap, bumpmask, cubemap, and so many more), also resulting in the in-ability to compile the engine shader dlls.

Attempting to use these very broken shaders in-game (or any custom shaders, for that matter) results in Invalid pixel shader index errors.

This needs to be resolved, as a lack of proper shader support limits how much mod developers can change the visual style (parallax corrected cubemaps, for example).