/**
 * Copyright (c) 2019-2025 mol* contributors, licensed under MIT, See LICENSE file for more info.
 *
 * @author Alexander Rose <alexander.rose@weirdbyte.de>
 */
import { WebGLContext } from '../../webgl/context.js';
import { Texture } from '../../../mol-gl/webgl/texture.js';
import { Vec3, Vec2, Mat4 } from '../../../mol-math/linear-algebra.js';
import { HistogramPyramid } from '../histogram-pyramid/reduction.js';
export declare function createIsosurfaceBuffers(ctx: WebGLContext, activeVoxelsBase: Texture, volumeData: Texture, histogramPyramid: HistogramPyramid, gridDim: Vec3, gridTexDim: Vec3, gridDataDim: Vec3, transform: Mat4, isoValue: number, invert: boolean, packedGroup: boolean, axisOrder: Vec3, constantGroup: boolean, vertexTexture?: Texture, groupTexture?: Texture, normalTexture?: Texture): {
    vertexTexture: Texture;
    groupTexture: Texture;
    normalTexture: Texture;
    vertexCount: number;
};
/**
 * GPU isosurface extraction
 *
 * Algorithm from "High‐speed Marching Cubes using HistoPyramids"
 * by C Dyken, G Ziegler, C Theobalt, HP Seidel
 * https://doi.org/10.1111/j.1467-8659.2008.01182.x
 *
 * Implementation based on http://www.miaumiau.cat/2016/10/stream-compaction-in-webgl/
 */
export declare function extractIsosurface(ctx: WebGLContext, volumeData: Texture, gridDim: Vec3, gridTexDim: Vec3, gridDataDim: Vec3, gridTexScale: Vec2, transform: Mat4, isoValue: number, invert: boolean, packedGroup: boolean, axisOrder: Vec3, constantGroup: boolean, vertexTexture?: Texture, groupTexture?: Texture, normalTexture?: Texture): {
    vertexTexture: Texture;
    groupTexture: Texture;
    normalTexture: Texture;
    vertexCount: number;
};