that's MS job to add a similar feature in DirectX. Steam Deck has it 'cos of Vulkan. This would greatly benefit Windows.This is all murky. One core distinction between PC and consoles is precompiled shaders otherwise you end up with just another PC. So the licensed Xboxes from OEMs would need to have some sort of custom fixed hw similar to what you see with Steam Deck and consoles otherwise they'd just be PCs because you have to compile the shaders to the specific hw.
afaik, they don't, but there are games like Cyberpunk with a setting called Steam Deck.Do developers make custom builds and optimizations for steam deck?
It's MS job to standardize hardware requirements so a setting like that could be added to any PC game. With their money and expertise they can do it, and again, Windows is one of their most successful business and it'd benefit the OS, and of course the gamers who would still have almost infinite backwards compatibility and freedom to tinker for those with the know-how.