export interface ExternalParityBrdfLut {
    readonly width: number;
    readonly height: number;
    readonly data: Uint8Array;
    readonly textureLabel: string;
    readonly diagnostics: {
        readonly byteLength: number;
        readonly nonZeroPixels: number;
        readonly monotonicRoughnessTrend: boolean;
    };
}
export declare function createExternalParityBrdfLut(size?: number): ExternalParityBrdfLut;
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