ReShade 3.x shaders: https://github.com/crosire/reshade-shaders/archive/0d783afdc68f2d103499f4e399be40f4f903015a.zip
The above link is for the latest version of the reshade-shaders repository on GitHub before November 19, 2018 which saw the release of ReShade 4.0 and start of changing the shaders over to be compatible with the newer version.
It’s from the below point in time: