| gpuTimeLastFrame | 输出 GPU 在最后一帧中花费的时间。 |
bool 如果 GPU 在最后一帧中花费的时间可用，则返回 true。如果该时间不可用，则返回 false。
从应用程序的最后一帧获取 GPU 执行命令所花费的时间（由 XR 插件报告）。以秒为测量单位。
可以使用此方法从 SDK 获取更准确的时间信息，包括有关在特定于 SDK 的图层中所花 GPU 时间的信息。
统计信息只能用于支持此方法的 SDK，可能会因硬件、SDK 和帧而异。在使用 out 参数的统计信息值之前，应始终检查此方法的返回值。
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