How to integrate both VXGI and SMAA into Unreal Engine

Hello everyone.

I want to know how can I integrate both VXGI and SMAA (please don’t force me to use TAA) into unreal engine.

The Unreal Engine Base from git hub - https://github.com/NvPhysX/UnrealEngine
To integrate VXGI I found this source codes from git hub - https://github.com/NvPhysX/UnrealEngine/tree/VXGI-4.13
To integrate SMAA - https://github.com/inequation/UnrealEngine/tree/SMAA-4.12

I’m wondering ( for example : if I need to copy files from SMAA zip into VXGI branch before running setup.bat)

I’m really confused how to do it because those sources codes of VXGI and SMAA are seperated.
Please help me. Thanks a lot.