Automatically adapt image quality according to frames per second (FPS) on all devices.
Easy, just drag the prefab in your scene and it will choose the best quality level at runtime.
Script is changing the level quality dynamically, during gameplay.
Added the possibility to stay on the most used quality level after some time.
All code is fully commented / explained.
* Boat scene not included根据所有设备上的每秒帧数（FPS）自动调整图像质量
