import Mesh, { MeshOpts } from './Mesh';
import Material from './Material';
import type TextureCube from './TextureCube';
import type Texture2D from './Texture2D';
import Shader from './Shader';
interface SkyboxOpts extends MeshOpts {
    environmentMap?: TextureCube | Texture2D;
}
declare function createSkyboxShader(): Shader<import("./Shader").VertexShader<import("./core/type").Dict<import("./Shader").ShaderDefineValue>, {
    view: {
        type: "mat4";
        semantic: "VIEW";
    };
    projection: {
        type: "mat4";
        semantic: "PROJECTION";
    };
}, {
    position: {
        type: "vec3";
        semantic: "POSITION" | undefined;
    };
}, {
    v_WorldPosition: {
        type: "vec3";
    }; /**
     * @constructor clay.plugin.Skybox
     *
     * @example
     *     const skyTex = new clay.TextureCube();
     *     skyTex.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'
     *     });
     *     const skybox = new clay.plugin.Skybox({
     *         scene: scene
     *     });
     *     skybox.material.set('environmentMap', skyTex);
     */
}, never>, import("./Shader").FragmentShader<{
    PI: number;
}, {
    equirectangularMap: {
        type: "sampler2D";
        value: Texture2D;
        semantic: import("./Shader").UniformSemantic | import("./Shader").MatrixSemantic | undefined;
    };
    cubeMap: {
        type: "samplerCube";
        value: TextureCube;
        semantic: import("./Shader").UniformSemantic | import("./Shader").MatrixSemantic | undefined;
    };
    lod: {
        type: "float";
        value: number;
        semantic: import("./Shader").UniformSemantic | import("./Shader").MatrixSemantic | undefined;
    };
}, {
    defines: {};
    uniforms: {};
    attributes: {};
    varyings: {};
    functions: ((functionName?: string | undefined) => string)[];
    main: string;
}[]>>;
/**
 * @constructor clay.plugin.Skybox
 *
 * @example
 *     const skyTex = new clay.TextureCube();
 *     skyTex.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'
 *     });
 *     const skybox = new clay.plugin.Skybox({
 *         scene: scene
 *     });
 *     skybox.material.set('environmentMap', skyTex);
 */
declare class Skybox extends Mesh<Material<ReturnType<typeof createSkyboxShader>>> {
    culling: boolean;
    private _envMap?;
    constructor(opts?: Partial<SkyboxOpts>);
    /**
     * Set environment map
     * @param {clay.TextureCube} envMap
     */
    setEnvironmentMap(envMap: Texture2D | TextureCube): void;
    /**
     * Get environment map
     * @return {clay.TextureCube}
     */
    getEnvironmentMap(): Texture2D | TextureCube | undefined;
    setLOD(lod: number): void;
    update(): void;
}
export default Skybox;