import type { Nullable, AbstractEngine, EffectWrapperCreationOptions } from "../index.js";
import { EffectWrapper } from "../Materials/effectRenderer";
/**
 * Post process used to extract highlights.
 */
export declare class ThinExtractHighlightsPostProcess extends EffectWrapper {
    /**
     * The fragment shader url
     */
    static readonly FragmentUrl = "extractHighlights";
    /**
     * The list of uniforms used by the effect
     */
    static readonly Uniforms: string[];
    protected _gatherImports(useWebGPU: boolean, list: Promise<any>[]): void;
    /**
     * Constructs a new extract highlights post process
     * @param name Name of the effect
     * @param engine Engine to use to render the effect. If not provided, the last created engine will be used
     * @param options Options to configure the effect
     */
    constructor(name: string, engine?: Nullable<AbstractEngine>, options?: EffectWrapperCreationOptions);
    /**
     * The luminance threshold, pixels below this value will be set to black.
     */
    threshold: number;
    /** @internal */
    _exposure: number;
    bind(): void;
}