This change, from the so-called rasterization method that GPUs use to a more scientific approach known as ray tracing, was long dismissed as infeasible for interactive, rapidly changing scenes.

• 也就是说，要从GPU采用的所谓栅格化（rasterization）方式，改变成更科学的光迹追踪法（raytracing）。长久以来，人们一直认为快速变化的互动式场景，并不适合采用这项方法。