Ffx_fsr2_api_x64 _hot_

The ffx_fsr2_api_x64 handles the synchronization of these stages. If the history buffer is invalid (e.g., the camera cut abruptly or the user turned the feature on mid-scene), the API detects this and resets the accumulation to prevent "ghosting" artifacts.

The modular architecture of ffx_fsr2_api_x64 offers distinct advantages: ffx_fsr2_api_x64