Fixed webgl_postprocessing_brackgrounds background. See #9235.

examples/webgl_postprocessing_backgrounds.html

@@ -127,7 +127,7 @@
 
 				//
 
-				cameraP = new THREE.PerspectiveCamera( 65, aspect, 3, 10 );
+				cameraP = new THREE.PerspectiveCamera( 65, aspect, 1, 10 );
 				cameraP.position.z = 7;
 
 			//	cameraO = new THREE.OrthographicCamera( width / - 2, width / 2, height / 2, height / - 2, 3, 10 );