export type DecodedTexture = {
    width: number;
    height: number;
    data: Uint8Array;
};
/**
 * Decodes the subset of DDS actually present in the Bistro archive: BC1/DXT1
 * (base color, with punch-through alpha), BC3/DXT5 (packed specular/ORM), and
 * BC5/ATI2 (DirectX tangent-space normals, X/Y only). Anything else fails
 * loudly so an unrecognized compression format becomes an explicit
 * unsupported-material receipt rather than a silently wrong texture.
 */
export declare function decodeDds(buffer: Buffer): DecodedTexture;
/** Decodes uncompressed truecolor TGA (image types 2 and 10), 24 or 32 bpp. */
export declare function decodeTga(buffer: Buffer): DecodedTexture;
/** DirectX (Y-down) tangent-space normal -> glTF/OpenGL (Y-up) normal, reconstructing Z. */
export declare function directXNormalToGlNormal(source: DecodedTexture): DecodedTexture;
/** Resamples to a bounded resolution and encodes as PNG, keeping detail GLBs within the package cap. */
export declare function encodeBoundedPng(texture: DecodedTexture, maxDimension: number): Promise<Buffer>;