注意阴影并不免费，阴影投射器需要开销来渲染，同时一个更加复杂的光线着色器需要应用。
Note that shadows are not "free"; shadow casters need to be rendered and a more complex light shader needs to be applied.
鸟类的眼睛是很复杂的，就像人类一样，鸟类的眼睛能够察觉到电磁波谱上从紫色到红色的光线。
The avian eye is complex. Like humans, birds' eyes can detect light along the electromagnetic spectrum from violet to red.
然而只有通过复杂的软件才能让原生光线数据产生价值，从而允许用户切换焦距。
But the wealth of raw light data comes to life only with sophisticated software that lets a viewer switch points of focus.
应用推荐