src/Space/Meta/Graphics/loaders/GLTFLoader.js
function GLTFTextureDDSExtension() {

		if ( ! THREE.DDSLoader ) {

			throw new Error( 'THREE.GLTFLoader: Attempting to load .dds texture without importing THREE.DDSLoader' );

		}

		this.name = EXTENSIONS.MSFT_TEXTURE_DDS;
		this.ddsLoader = new THREE.DDSLoader();

	}
function GLTFTextureDDSExtension() {

		if ( ! THREE.DDSLoader ) {

			throw new Error( 'THREE.GLTFLoader: Attempting to load .dds texture without importing THREE.DDSLoader' );

		}

		this.name = EXTENSIONS.MSFT_TEXTURE_DDS;
		this.ddsLoader = new THREE.DDSLoader();

	}
function GLTFTextureDDSExtension ( ) { if ( ! THREE . DDSLoader ) { throw new Error ( 'THREE.GLTFLoader: Attempting to load .dds texture without importing THREE.DDSLoader' ) ; } this . name = EXTENSIONS . MSFT_TEXTURE_DDS ; this . ddsLoader = new THREE . DDSLoader ( ) ; }
DDS Texture Extension

Specification:
https://github.com/KhronosGroup/glTF/tree/master/extensions/2.0/Vendor/MSFT_texture_dds
DDS Texture Extension