import Texture, { TextureOpts, TextureSource } from './Texture';
export declare const cubeTargets: readonly ["px", "nx", "py", "ny", "pz", "nz"];
export type CubeTarget = 'px' | 'nx' | 'py' | 'ny' | 'pz' | 'nz';
export type TextureCubeSource = Record<CubeTarget, TextureSource | undefined>;
export interface TextureCubeOpts extends TextureOpts<TextureCubeSource> {
    mipmaps?: TextureCubeSource[];
}
/**
 * @constructor clay.TextureCube
 * @extends clay.Texture
 *
 * @example
 *     ...
 *     const mat = new clay.Material({
 *         shader: clay.shader.library.get('clay.phong', 'environmentMap')
 *     });
 *     const envMap = new clay.TextureCube();
 *     envMap.load({
 *         'px': 'assets/textures/sky/px.jpg',
 *         'nx': 'assets/textures/sky/nx.jpg'
 *         'py': 'assets/textures/sky/py.jpg'
 *         'ny': 'assets/textures/sky/ny.jpg'
 *         'pz': 'assets/textures/sky/pz.jpg'
 *         'nz': 'assets/textures/sky/nz.jpg'
 *     });
 *     mat.set('environmentMap', envMap);
 *     ...
 *     envMap.onload(() => {
 *         // Wait for the sky texture loaded
 *         animation.on('frame', (frameTime) => {
 *             renderer.render(scene, camera);
 *         });
 *     });
 */
declare class TextureCube extends Texture<TextureCubeSource> {
    readonly textureType = "textureCube";
    mipmaps?: TextureCubeSource[];
    constructor(opts?: Partial<TextureCubeOpts>);
    get width(): number;
    set width(value: number);
    get height(): number;
    set height(value: number);
    protected _defaultFormat(): number;
    protected _defaultType(): 5121 | 5124 | 5125 | 5126 | 5131;
    isPowerOfTwo(): boolean;
    isRenderable(): boolean;
    load(srcList: Record<CubeTarget, string>, crossOrigin?: string): Promise<void>;
}
export default TextureCube;