1.前言

Unity清楚某个Camera画面，最简单的方式直接设置SetActive(false)。在此采用CommandBuffer清除图像。

2.实现

public class EyeSightController : MonoBehaviour
{
    public Camera leftCamera;
    public Camera rightCamera;
    public bool enableSingleEyeMode = false;

    private void OnRender(Camera camera)
    {
        if (camera == leftCamera)
        {
            ClearCameraRender(camera);
        }
    }

    private void ClearCameraRender(Camera camera)
    {
        CommandBuffer cmd = new CommandBuffer();
        cmd.SetRenderTarget(camera.targetTexture);
        cmd.ClearRenderTarget(true, true, Color.black);
        Graphics.ExecuteCommandBuffer(cmd);
    }

    private void Start()
    {
        Camera.onPostRender += OnRender;
    }
}

3.结语

采用Camera的onPostRender回调时会对所有的camera进行进行相应的处理。如果直接用OnPostRender内置方法时需要挂载在相应camera所在的游戏物体上。