import type { Document } from '@gltf-transform/core';
import type { Object3D } from 'three';
export type MaterialTextureRoles = {
    map?: string;
    normalMap?: string;
    specularMap?: string;
    emissiveMap?: string;
};
/** Records which basename a just-loaded Texture object came from, keyed by object identity. */
export declare function recordTextureSource(texture: object, basename: string): void;
/** Reads which basename each material's DiffuseColor/NormalMap/SpecularColor/EmissiveColor slot referenced. */
export declare function collectMaterialTextureRoles(root: Object3D): Map<string, MaterialTextureRoles>;
/** Resolves, decodes (DDS/TGA), converts (DirectX normal flip) and bounds-resizes only the textures materials actually reference. */
export declare function decodeReferencedTextures(referencedBasenames: readonly string[], resolveTextures: (basenames: readonly string[]) => Promise<Map<string, Buffer>>, maxDimension: number): Promise<{
    images: Map<string, Buffer>;
    unsupported: string[];
}>;
/** Attaches decoded textures to the exported glTF materials by original FBX material name. */
export declare function bakeMaterialTextures(document: Document, roles: Map<string, MaterialTextureRoles>, images: Map<string, Buffer>): void;
export declare function installNodeDomShims(): void;