Apple's graphics partner for iOS devices, Imagination Technologies, has announced a new version of its PowerVR graphics architecture that includes ray-tracing capabilities. Apple currently uses the PowerVR G6430 graphics package from Imagination in its latest A7 chip that powers the iPhone 5s, iPad Air, and Retina iPad mini, so Imagination's new technology is likely of interest to Apple. Offering more realistic lighting and shadows, the new GPU design known as "Wizard" marks a significant leap forward by bringing ray tracing to mobile devices.For the better part of the last eight years, we have been busy developin