您可以使用逐摄像机对图片精灵进行排序,修改摄像机的如下属性即可:
TransparencySortMode(对应透明度排序模式 (Transparency Sort Mode))
TransparencySortAxis(对应透明度排序轴 (Transparency Sort Axis))
例如:
var camera = GetComponent<Camera>();
camera.transparencySortMode = TransparencySortMode.CustomAxis;
camera.transparencySortAxis = new Vector3(0.0f, 1.0f, 0.0f);