type ImageSource = HTMLImageElement | HTMLCanvasElement | ImageBitmap;
/**
 * Texture with a hard 128x128 maximum. On needsUpdate, source images
 * are clamped to 128x128 via nearest-neighbor resampling.
 */
export declare class Texture {
    #private;
    static BRIGHTNESS_LEVELS: number;
    id: number;
    name: string;
    wrapS: number;
    wrapT: number;
    image: ImageSource | undefined;
    constructor(image?: ImageSource | undefined);
    get needsUpdate(): boolean;
    set needsUpdate(value: boolean);
    /** Cached pixel data, clamped to 128x128. */
    get data(): ImageData | undefined;
    get width(): number;
    get height(): number;
    /**
     * Pre-multiplied brightness variants of the texture pixel data.
     * Lazily built on first access, invalidated on needsUpdate/dispose.
     */
    get brightnessLevels(): Uint8ClampedArray[] | undefined;
    clone(): Texture;
    dispose(): void;
}
export {};
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