晕了，花了好长时间把需要的volume texture做好（32x32x32的纹理，偶用ps一张一张做的阿T_T)，结果发现content pipeline不支持velume texture！！！在论坛里搜索了一下，看到ms的人说“I agree it's a shame we didn't have time to get these into the content pipeline,but sadly they were among the many features that just didn't fit into the schedule. ” -_-#。嗯嗯，虽然类库里有Texture3D用来表示volume texture，但需要自己写importer导入volume texture才行鸟～～～ :(
