New Delhi, Dec. 3 -- Valve already has a tech called Proton that converts Windows Direct3D calls to Vulkan on Linux-based devices like the Steam Deck. This makes it possible to run thousands of PC games on Steam Deck with near-native performance. The company is now working on extending this compatibility to ARM architecture through funded open-source projects. Pierre-Loup Griffais, a key SteamOS architect, confirmed in a recent interview that Valve supports projects enabling x86 Windows games on ARM smartphones and beyond.​​

FEX is an emulator that Valve has been backing for years, which translates x86 code to run efficiently on ARM chips like Qualcomm Snapdragon 8 Gen 3. Combined with Proton, FEX minimises overhead, as seen ...