拆分贴图的Alpha通道 --对抗ETC1的原罪
http://blog.csdn.net/u010153703/article/details/51491116
Unity内存优化(贴图层面)
http://www.cnblogs.com/joeshifu/p/5489906.html
Unity3D研究院之UGUI安卓自动ETC1通道分离(九十一)
http://www.xuanyusong.com/archives/4279
NGUI下alpha通道的分离与合并
http://blog.csdn.net/ethuangfen/article/details/53764070
unity游戏优化之ETC压缩和 Alpha通道处理,让飞起来
http://www.xiaobao1993.com/853.html
Unity Android平台下针对Alpha分离的优化---三张Alpha贴图合并为一张
http://blog.csdn.net/ag_cill/article/details/71081296
NGUI下RGB与Alpha通道分离支持
http://www.maosongliang.com/archives/310
Unity工程里图片的RGB和Alpha通道的分离,以及显示所有带有Alpha通道贴图的Material
http://www.itnose.net/detail/6116583.html
Unity3D研究院之UGUI安卓自动ETC1通道分离(九十一)
http://www.xuanyusong.com/archives/4279
干货:Unity游戏开发图片纹理压缩方案
https://zhuanlan.zhihu.com/p/25205686
ETC1 + Alpha Feature
https://forum.unity3d.com/threads/etc1-alpha-feature.350184/
How Can I Add Alpha To ETC1 Compression?
https://support.unity3d.com/hc/en-us/articles/207051116-How-can-I-add-Alpha-to-ETC1-Compression-