I believe that compiling x265 with the 3 patches just makes it possible to encode 8-bit as usual, as well as the additional encode possibilities of 10-bit and 12-bit. That is all that is affected with what we have just been calling "multibit", i.e.:

  1. encode ONLY

  2. x265 ONLY

  3. 8-bit basically the same as without the patches

  4. 10-bit and 12-bit additional options for encoding

These particular patches were provided by Andrew-R who most likely located the possibility from information found on the internet and created the modset as required specifically for CinGG.