[Papervision3D] bitmap warping when cube spins

[Ross Hulford]

Hi I am rotating my cube and the material warps quite badly, I am  
using a fairly standard setup (camera, render engine)

Is there anything I can do to improve the quality?

viewport = new Viewport3D(550, 400, false, true);
			addChild(viewport);
			
			//instantiates a Scene3D instance
			scene = new Scene3D();
			
			//instantiates a Camera3D instance
			camera = new Camera3D();
			
			//renderer draws the scene to the stage
			renderer = new BasicRenderEngine();

function onEnterFrame(e:Event):void
			{
				collada.rotationY += 1.5
				
				renderer.renderScene(scene, camera, viewport);
			}