interface RGB {
    r: number;
    g: number;
    b: number;
}
/**
 * Accumulates all scene lights into an RGB multiplier object.
 * Mutates and returns the provided `out` parameter to avoid allocation.
 */
export declare function accumulateLights(nx: number, ny: number, nz: number, lights: Record<string, unknown>[], ambientIntensity: number, out: RGB, wx?: number, wy?: number, wz?: number): RGB;
export {};
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