Environment used to evaluate dynamic technique attributes.
Usually MapView.env.
RawShaderMaterial instances need to know about the fog at instantiation in order to avoid
recompiling them manually later (ThreeJS does not update fog for RawShaderMaterials).
Whether shadows are enabled or not, this is required because we change the material used.
Properties to skip.
The shader [[Technique]] to choose.
Generated using TypeDoc
The structure of the options to pass into createMaterial.