| names | 要在其中写入采样器名称的预分配列表。如果只需要获取采样器的数量，则返回 null。 |
int 活动采样器的数量。
返回所有已注册性能分析器标签的数量和名称。
使用 **GetNames** 可获取大量可用采样器并使用其名称填充 names 列表参数。
**注意**：目前，所有内置计数器仅在 Editor 和 Development Player 中可用。非 Development Player 中的 **GetNames** 将返回 0 和空列表。
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