Merge pull request #9845 from plan8/listener-audioparam-attributes

AudioListener: use AudioParam attributes if supported.

src/audio/AudioListener.js

@@ -101,8 +101,25 @@ AudioListener.prototype = Object.assign( Object.create( Object3D.prototype ), {
 
 			orientation.set( 0, 0, - 1 ).applyQuaternion( quaternion );
 
-			listener.setPosition( position.x, position.y, position.z );
-			listener.setOrientation( orientation.x, orientation.y, orientation.z, up.x, up.y, up.z );
+			if ( listener.positionX ) {
+
+				listener.positionX.setValueAtTime( position.x, this.context.currentTime );
+				listener.positionY.setValueAtTime( position.y, this.context.currentTime );
+				listener.positionZ.setValueAtTime( position.z, this.context.currentTime );
+				listener.forwardX.setValueAtTime( orientation.x, this.context.currentTime );
+				listener.forwardY.setValueAtTime( orientation.y, this.context.currentTime );
+				listener.forwardZ.setValueAtTime( orientation.z, this.context.currentTime );
+				listener.upX.setValueAtTime( up.x, this.context.currentTime );
+				listener.upY.setValueAtTime( up.y, this.context.currentTime );
+				listener.upZ.setValueAtTime( up.z, this.context.currentTime );
+
+			}
+			else {
+
+				listener.setPosition( position.x, position.y, position.z );
+				listener.setOrientation( orientation.x, orientation.y, orientation.z, up.x, up.y, up.z );
+
+			}
 
 		};