import { QuerySet, QuerySetProps } from '@luma.gl/core';
import { WebGLDevice } from "../webgl-device.js";
type WebGLPendingQuery = {
    handle: WebGLQuery;
    promise: Promise<bigint> | null;
    result: bigint | null;
    disjoint: boolean;
    cancelled: boolean;
    pollRequestId: number | null;
    resolve: ((value: bigint) => void) | null;
    reject: ((error: Error) => void) | null;
};
type WebGLTimestampPair = {
    activeQuery: WebGLPendingQuery | null;
    completedQueries: WebGLPendingQuery[];
};
/**
 * Asynchronous queries for different kinds of information
 */
export declare class WEBGLQuerySet extends QuerySet {
    readonly device: WebGLDevice;
    readonly handle: WebGLQuery | null;
    protected _timestampPairs: WebGLTimestampPair[];
    protected _pendingReads: Set<WebGLPendingQuery>;
    protected _occlusionQuery: WebGLPendingQuery | null;
    protected _occlusionActive: boolean;
    get [Symbol.toStringTag](): string;
    constructor(device: WebGLDevice, props: QuerySetProps);
    destroy(): void;
    isResultAvailable(queryIndex?: number): boolean;
    readResults(options?: {
        firstQuery?: number;
        queryCount?: number;
    }): Promise<bigint[]>;
    readTimestampDuration(beginIndex: number, endIndex: number): Promise<number>;
    beginOcclusionQuery(): void;
    endOcclusionQuery(): void;
    writeTimestamp(queryIndex: number): void;
    protected _validateRange(firstQuery: number, queryCount: number): void;
    protected _getTimestampPairIndex(queryIndex: number): number;
    protected _isTimestampPairAvailable(pairIndex: number): boolean;
    protected _pollQueryAvailability(query: WebGLPendingQuery): boolean;
    protected _consumeTimestampPairResult(pairIndex: number): Promise<bigint>;
    protected _consumeQueryResult(query: WebGLPendingQuery): Promise<bigint>;
    protected _cancelPendingQuery(query: WebGLPendingQuery): void;
    protected _requestAnimationFrame(callback: FrameRequestCallback): number;
    protected _cancelAnimationFrame(requestId: number): void;
}
export {};
//# sourceMappingURL=webgl-query-set.d.ts.map