4.14 how to get rid of the black version of the non compiler

4.14非编译版如何去掉黑边
how to Remove black edges of 4.14 non compiler version

https://www.reddit.com/r/Vive/comments/5259ue/psa_unreal_engine_4_devs_how_to_get_rid_of_the/?st=iy8xtw2e&sh=3e0d8b90