Ogc3d
Process-level registry of 3D-Tiles-specific pluggable extensions. Apps wire concrete implementations once at startup; the engine reads the registry from the streaming + render hot path without per-layer plumbing.
Codec-style glTF extensions (Draco, KTX2, etc.) live in earth.worldwind.formats.gltf.GltfDecoderRegistry because they're general glTF concerns. This registry is for things that only make sense in the 3D Tiles pipeline.
Properties
Decoder for the 3DTILES_draco_point_compression PNTS extension. Null = unsupported; Draco-compressed .pnts tiles log once + skip.
Evaluator for the 3D Tiles 1.0 declarative styling language. Null = unsupported; any earth.worldwind.layer.ogc3d.Ogc3dTilesLayer.style set on a layer is parsed + stored but its expressions never fire, so features render with the material's base colour and full visibility.