// import {Vector3, IUniform, HemisphereLight} from 'three';
// import {DirectionUniformElement, UniformsUpdateFunction, updateDirectionFromMatrix} from './_Base';

// export interface HemisphereLightRayMarchingUniformElement extends DirectionUniformElement {}
// interface HemisphereLightRayMarchingUniforms extends Array<HemisphereLightRayMarchingUniformElement> {
// 	needsUpdate?: boolean;
// }
// export interface HemisphereLightRayMarchingUniform extends IUniform {
// 	value: HemisphereLightRayMarchingUniforms;
// }
// export function _createHemisphereLightUniform(): HemisphereLightRayMarchingUniformElement {
// 	return {
// 		direction: new Vector3(),
// 	};
// }

// let hemisphereLightIndex = 0;
// export const _updateUniformsWithHemisphereLight: UniformsUpdateFunction<HemisphereLight> = (
// 	object: HemisphereLight,
// 	hemisphereLightsRayMarching: HemisphereLightRayMarchingUniform
// ) => {
// 	updateDirectionFromMatrix(object, hemisphereLightsRayMarching, hemisphereLightIndex, _createHemisphereLightUniform);
// 	hemisphereLightIndex++;
// };
// export function _resetHemisphereLightIndex() {
// 	hemisphereLightIndex = 0;
// }