There is something wrong in PhyreEngine 3.8 to fullfill MSAA, actually, I think it is eqaa
You have to merge the codes from PhyreEngine 3.9. Thank God they fixed it in 3.9.
A depth target is redefined in it is scope every time!!
PhyreEngine3.8 MSAA resolution,布布扣,bubuko.com
PhyreEngine3.8 MSAA resolution
原文：http://www.cnblogs.com/minggoddess/p/3817990.html