import * as THREE from 'three';
export type PortalMaterialType = {
    resolution: THREE.Vector2;
    blur: number;
    size?: number;
    sdf?: THREE.Texture | null;
    map?: THREE.Texture | null;
};
export declare const MeshPortalMaterial: (new (parameters?: (THREE.ShaderMaterialParameters & Partial<PortalMaterialType>) | undefined) => THREE.ShaderMaterial & PortalMaterialType) & {
    key: string;
};
export declare const meshPortalMaterialApplySDF: (portalMesh: THREE.Mesh, resolution: number, gl: THREE.WebGLRenderer) => void;