用于延迟反射探针的着色器。
When using deferred shading, reflection probes are rendered in "deferred" way by default.
All deferred objects in the Scene get per-pixel reflection probes that are calculated using this shader.
将延迟反射着色器设置为“disabled”(BuiltinShaderMode.Disabled) 时，反射探针是
以逐对象方式工作的，与前向渲染计算它们的方式类似。
另请参阅：GraphicsSettings.SetShaderMode、BuiltinShaderMode、Graphics Settings。