import { vec4 } from 'gl-matrix';
import TextureInfo from './TextureInfo';
import Gltf2 from '../types/Gltf2';
import GltfLoader from '../io/GltfLoader';
import { StandardPass } from 'nanogl-pbr/StandardPass';
/**
 * The PbrMetallicRoughness element contains the base properties for a PBR material, using the metallic-roughness workflow.
 */
export default class PbrMetallicRoughness {
    /**
     * Factors applied to each color channel of the baseColorTexture. Default to [1, 1, 1, 1]
     */
    baseColorFactor: vec4;
    /**
     * Factor for the metalness of the material. Default to 1
     */
    metallicFactor: number;
    /**
     * Factor for the roughness of the material. Default to 1
     */
    roughnessFactor: number;
    /**
     * Base color texture for the material
     */
    baseColorTexture?: TextureInfo;
    /**
     * Metallic-roughness texture for the material. Metallic will be sampled from the B channel, roughness from the G channel.
     * If R or A channels are present, they will be ignored.
     */
    metallicRoughnessTexture?: TextureInfo;
    /**
     * Parse the PbrMetallicRoughness data, filling the class properties.
     *
     * Is async as it may need to wait for baseColorTexture and metallicRoughnessTexture to be loaded.
     * @param gltfLoader GLTFLoader to use
     * @param data Data to parse
     */
    parse(gltfLoader: GltfLoader, data: Gltf2.IMaterialPbrMetallicRoughness): Promise<any>;
    /**
     * Setup the PbrMetallicRoughness data on a nanogl-pbr StandardPass by attaching baseColor
     * and metallicRoughness textures with samplers and their strength factors. It uses a nanogl-pbr MetalnessSurface.
     * @param pass Pass to setup
     */
    setupPass(pass: StandardPass): void;
}