1.As mentioned above in the directional lights section, the rendering of shadows for directional lights is an approximation that allows us to use a single render to cover a largeish area with shadows.
1.你也可以使用着色语言作为实现基础
处理阴
投射体和接收体
实现更复杂
阴
算法,比如实现支持自投
深度阴
贴图。