Yet somehow this is fairly obscure knowledge unless you're into serious game programming or a similar field.
Because the impact in optimizing hardware like that can be not so important in many applications. Getting the absolute most out of your hardware is very clearly important in game programming, but web apps where scale being served is not huge (vast majority)? Not so much. And in this context developer time is more valuable when you can throw hardware at the problem for less.
Traditional game programming you had to run on the hardware people used to play, you are constrained by the client's abilities. Cloud gaming might(?) be changing some of that, but GPUs are super expensive too compared to the rest of the computing hardware. Even in that case the amounts of data you are pushing you need to be efficient within the context of the GPU, my feeling is it's not easily horizontally scaled.
We have seen there are so many aspects of computing where once it’s good enough, it’s good enough. Like how onboard DACs got good enough that even the cheap ones are sufficient and the average user would never buy an actual sound card or usb dac. Even though the dedicated one is better, it isn’t that much better.
1) you still need to install and maintain it and there are many trends even professionally that want to avoid that
2) just cause you could get it many may not want it. I could easily see people settle for a nice M1 MBA or M1 iMac and just stream the games if their internet is fine. Heck, wouldn't it be nicer to play some PC games in the living room like you can do with SteamLink?
3) another comment brings a big point that this unlocks a new "type" of game which can be designed in ways that take advantage of more than a single computer's power to do games with massively shared state that couldn't be reliably done before.
I think to counter my own points: 1) I certainly have a beefy desktop anyways 2) streaming graphics are not even close to local graphics (a huge point) 3) there is absolutely zero way they're gonna steam VR games from a DC to an average residential home within 5 years IMHO.
Massive shared state might be something which is useful. I have spent some time thinking about it and the only use case I can think of is highly detailed physics simulations with destructible environments in multi player games where synchronization becomes a nightmare traditionally since minor differences cascade in to major changes in the simulation.
But destructible environments and complex physics are a trend which came and went. Even in single player games where its easy, they take too much effort to develop and are simply a gimmick to players which adds only a small amount of value. Everything else seems easier to just pass messages around to synchronize state.
Think of it a different direction: if/when cloud rendering AAA graphics is practical, you can get a very low friction Netflix like experience where you just sit down and go.
Cloud gaming seemingly only helps in the case when you have weak hardware but want to play AAA games. If we could put "good enough" graphics in every device, there would be no need to stream. And I think in 10 years probably every laptop will have built in graphics that are so good that cloud gaming is more trouble than its worth. It might sound unrealistic to say there is a good enough but I think a lot of things have already reached this point. These days screen DPI is largely good enough, sound quality is good enough, device weight/slimness is good enough, etc.
I think the biggest challenge is that designing these new types of games is going to be extremely hard. Very few people are actually able to design performance intensive applications from the ground up outside of well-scoped paradigms (at least web servers, databases, and desktop games have a lot of prior art and existing tools). Cloud native games have almost no prior art and almost limitless possibilities for how they could be designed and implemented, including as I mentioned even novel hardware.
The downside is that VR won't work with that much network latency.
It's a pretty sad state of affairs when the main way we talk about algorithm performance suggests that traversing a linked list is as fast as traversing an array.