nder target
				renderTargetBlur = new THREE.WebGLRenderTarget( 512, 512 );
				renderTargetBlur.texture.generateMipmaps = false;


				// make a plane and make it face up
				const planeGeometry = new THREE.PlaneGeometry( PLANE_WIDTH, PLANE_HEIGHT ).rotateX( Math.PI / 2 );
				const planeMaterial = new THREE.MeshBasicMaterial( {
					map: renderTarget.texture,
					opacity: state.shadow.opacity,
					transparent: true,
					depthWrite: false,
				} );
				plane = new THREE.Mesh( planeGeometry, planeMateria