setSceneClipBox( box ) {

		if ( box ) {

			this.gtaoMaterial.needsUpdate = this.gtaoMaterial.defines.SCENE_CLIP_BOX !== 1;
			this.gtaoMaterial.defines.SCENE_CLIP_BOX = 1;
			this.gtaoMaterial.uniforms.sceneBoxMin.value.copy( box.min );
			this.gtaoMaterial.uniforms.sceneBoxMax.value.copy( box.max );

		} else {

			this.gtaoMaterial.needsUpdate = this.gtaoMaterial.defines.SCENE_CLIP_BOX === 0;
			this.gtaoMaterial.defines.SCENE_CLIP_BOX = 0;

		}

	}
Configures the clip box of the GTAO shader with the given AABB.

@param {?Box3} box - The AABB enclosing the scene that should receive AO. When passing
`null`, to clip box is used.