The deviceorientation event enables us to pull alpha, beta and gamma rotation values. Note that these values are relative to the current orientation of the

The deviceorientation event enables us to pull alpha, beta and gamma rotation values. Note that these values are relative to the current orientation of the device. The image above shows the axes of a phone held perpendicular to the ground in portrait mode. Does 'alpha' really run up-and-down the iPhone while in portrait? The first value is usually the X axis, and usually runs 'sideways' of an iPhone in portrait mode. Unfortunately, each browser implements depth-sorting differently and, therefore, has its own issues. The best we can do to combat the glitchy pop-through of underlying elements is to keep planes away from each other. Is there no way to enable depth testing? ie: Using the zbuffer for per-pixel depth read / test / write? You can avoid depth sorting that way, at a small performance cost, and the result looks better.