/**
 * Copyright (c) 2019-2021 mol* contributors, licensed under MIT, See LICENSE file for more info.
 *
 * @author Alexander Rose <alexander.rose@weirdbyte.de>
 */
import { WebGLContext } from '../../webgl/context';
import { Texture } from '../../../mol-gl/webgl/texture';
export declare function getHistopyramidSum(ctx: WebGLContext, pyramidTopTexture: Texture): number;