class in UnityEngine.Experimental.XR
/
继承自：Experimental.IntegratedSubsystem
切换到手册提供对设备摄像机的访问权限。
XRCameraSubsystem 可将 Unity Camera 连接到设备摄像机，以进行视频叠加（直通渲染）。 它还支持开发者查询环境光照估算（如果可用）。
| Camera | 将应用程序内的当前 Camera 组件设置为由此 XRCameraInstance 使用。 |
| LastUpdatedFrame | 摄像机子系统上次成功更新时的帧。 |
| LightEstimationRequested | 如果 XRCameraSubsystem 应尝试提供光照估算，则为 True。 |
| Material | 设置要在对渲染目标进行渲染时使用的当前 Material。 |
| GetTextures | 使用与 XRCameraSubsystem 关联的纹理填充提供的 /texturesOut/。 |
| TryGetAverageBrightness | 提供整个图像的亮度，以作为所有像素亮度的平均值。 |
| TryGetAverageColorTemperature | 为整个图像提供色温，以作为所有像素色温的平均值。 |
| TryGetDisplayMatrix | 提供定义了如何在屏幕上渲染纹理的显示矩阵。 |
| TryGetProjectionMatrix | 提供摄像机子系统使用的投影矩阵。 |
| TryGetShaderName | 提供摄像机子系统渲染纹理所使用的着色器名称。 |
| TryGetTimestamp | 提供时间戳。 |
| FrameReceived | 接收到新的摄像机帧时引发的事件。 |
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