import type { BufferAttribute, ReadbackBuffer, Renderer } from 'three/webgpu';
interface ReadArrayBufferOptions {
    target?: ReadbackBuffer | null;
    byteOffset?: number;
    byteLength?: number;
}
declare function resolveReadbackAttribute(source: unknown): BufferAttribute;
declare function createReadbackBuffer(byteLength: number): ReadbackBuffer | null;
declare function ensureReadbackAttribute(renderer: Renderer, attribute: BufferAttribute): BufferAttribute;
declare function readArrayBufferAsync(renderer: Renderer, source: unknown, { target, byteOffset, byteLength, }?: ReadArrayBufferOptions): Promise<ArrayBuffer>;
/**
 * Reusable pool for ranged GPU-to-CPU buffer readbacks on Three.js dev.
 * Falls back to one-shot reads on Three.js versions without ReadbackBuffer.
 */
declare class RangedReadback {
    capacityBytes: number;
    free: ReadbackBuffer[];
    constructor(capacityBytes: number);
    ensureCapacity(byteLength: number): void;
    read<T>(renderer: Renderer, source: unknown, byteOffset: number, byteLength: number, decode: (buffer: ArrayBuffer) => T): Promise<T>;
    dispose(): void;
}
export { RangedReadback, createReadbackBuffer, ensureReadbackAttribute, readArrayBufferAsync, resolveReadbackAttribute };