| playable | 拥有当前 PlayableBehaviour 的 Playable。 |
| info | 包含关于当前帧环境的信息的 FrameData 结构。 |
| playerData | The user data of the ScriptPlayableOutput that initiated the process pass. |
在 PlayableGraph 的 ProcessFrame 阶段调用此函数。
ProcessFrame is the stage at which your Playable does its work.
This method is called for each frame when a Playable plays and is connected, directly or indirectly, to a ScriptPlayableOutput.