Unity clone 场景渲染的灯光贴图异位问题

问题

需要将一个场景clone 一份保存到本地
当克隆完成后，副本场景的灯光贴图异位了，与原场景存在较大的差别

问题原因

场景被clone 后，场景的灯光渲染数据不能共用，即Lightmapping.lightingSettings 两场景可以公用，但 Lightmapping.lightingDataAsset 数据不能共用。

解决办法

场景被clone 后，重新调用unity 的Bake方法，对新场景重新灯光烘焙。
附上相关代码：

        EditorSceneManager.SaveScene(scene, newPath, false);
        //bake new copy scene,  when clone a scene, the reference of the light data will be broken.
        if (Lightmapping.lightingSettings != null && Lightmapping.lightingDataAsset != null)
        {
            //EditorSceneManager.OpenScene(scene.path, OpenSceneMode.Single);
            var sourceLightingSettingPath = AssetDatabase.GetAssetPath(Lightmapping.lightingSettings);
            var newLightingsettingPath = Path.Combine(Path.GetDirectoryName(newPath), Path.GetFileNameWithoutExtension(newPath) + ".lighting");
            File.Copy(sourceLightingSettingPath, newLightingsettingPath, true);
            AssetDatabase.ImportAsset(newLightingsettingPath);
            var lightingSetting = AssetDatabase.LoadAssetAtPath<LightingSettings>(newLightingsettingPath);
            EditorSceneManager.OpenScene(newPath, OpenSceneMode.Single);
            Lightmapping.lightingSettings = lightingSetting;
            Lightmapping.lightingSettings.autoGenerate = false;
            Lightmapping.Bake();
            EditorSceneManager.SaveScene(EditorSceneManager.GetActiveScene(), newPath);
        }
	```