import SpeckleBasicMaterial from './SpeckleBasicMaterial.js';
import { Material, MeshBasicMaterialParameters, Texture } from 'three';
import { Uniforms } from './SpeckleMaterial.js';
declare class SpeckleViewportMaterial extends SpeckleBasicMaterial {
    protected get vertexProgram(): string;
    protected get fragmentProgram(): string;
    protected get uniformsDef(): Uniforms;
    constructor(parameters: MeshBasicMaterialParameters, defines?: never[]);
    set minIntensity(value: number);
    set matcapTexture(value: Texture | null);
    fastCopy(from: Material, to: Material): void;
}
export default SpeckleViewportMaterial;