Valve has long been preparing its software stack for the arrival of both the Steam Machine and the upcoming Steam Frame, and the latest update sees the gaming giant add a long list of fixes, QoL improvements, and features to SteamVR as well as changes to the developer back-end in order to prepare fo...
Its less an emulator, and more a translation layer.Emulation is when you essentially construct a virtual representation of the target hardware, and map the virtual hardware to real hardware, and then you can run code made for the emulated, target hardware, on the real hardware.A translation layer does not involve emulating a specific target hardware configuration.WINE -> Wine Is Not (an) EmulatorProton is basically… a massive expansion pack, for WINE.Proton translates Windows x86-64 calls into Linux x86-64 calls.FEX translates Linux x86-64 calls into Linux ARM calls.The point is actually to be able to run Linux x86-64 on ARM, not the other way around.But, as a consequence of developing a comprehensive ARM <-> x86-64 translation layer, that does mean that it will be easier to port APKs, Android libraries, or in some instances just run APKs, on x86-64.EDIT: Fucking derp.
FEX is an emulator, because it is mapping to another hardware architecture.
https://github.com/FEX-Emu/FEX