import type { ComputeNode } from 'three/webgpu';
import type { TSLFloatNode, TSLStorageNode } from '../../../types/tsl.cjs';
import { type SPHSpatialGrid } from './SPHGridContracts.cjs';
/**
 * Grid-accelerated O(N) pressure force computation pass.
 * Uses spatial grid for efficient neighbor lookup.
 *
 * @param {*} positionsBuffer Particle positions buffer.
 * @param {*} velocitiesBuffer Particle velocities buffer.
 * @param {*} densitiesBuffer Particle densities buffer.
 * @param {*} pressuresBuffer Particle pressures buffer.
 * @param {*} pressureForcesBuffer Pressure forces buffer.
 * @param {number} particleCount Number of particles.
 * @param {*} mass Particle mass uniform.
 * @param {*} h Smoothing radius uniform.
 * @param {*} spiky Spiky kernel coefficient uniform.
 * @param {*} grid Spatial grid instance.
 * @param {boolean} is3D Whether simulation is 3D.
 * @param {boolean} debugEnabled Debug mode flag.
 * @param {*} debugActivatedBuffer Debug activation buffer (optional).
 * @param {*} debugCellIdBuffer Debug cell ID buffer (optional).
 * @returns {*} Compute node.
 */
export declare function computePressureForcePassGrid(positionsBuffer: TSLStorageNode<'vec3'>, velocitiesBuffer: TSLStorageNode<'vec3'>, densitiesBuffer: TSLStorageNode<'float'>, pressuresBuffer: TSLStorageNode<'float'>, pressureForcesBuffer: TSLStorageNode<'vec3'>, particleCount: number, mass: TSLFloatNode, h: TSLFloatNode, spiky: TSLFloatNode, grid: SPHSpatialGrid, is3D: boolean, debugEnabled: boolean, debugActivatedBuffer?: TSLStorageNode<'uint'> | null, debugCellIdBuffer?: TSLStorageNode<'uint'> | null): ComputeNode;