While reading through the Quake 3 source code, I noticed that whenever the FS functions were reading from a CD, they were doing so in a loop, because the fread/fopen functions instead of hanging and waiting for the CD to spin up sometimes just returned an error. It wasn't just slow, it was also hilarious at times.

This reminds me of Valve’s GCF (grid cache file, officially, or game cache file, commonly). The benefits must have purely occurred on consoles for the reasons you outlined, because cracked Valve games that had GCF files extracted ran faster than the official retail releases on PCs!

Stream loading is another technique that's used to reduce load time. You start loading data for the next level as the player approaches a boundry and you let them enter the next level before all of the assets(ussally textures) have finished loading.

Consoles also do this with HDDs. That's been one of the talking points around the PS5 from the beginning, with Sony saying that games would get more storage space efficient because they don't need redundancy for faster loading anymore.

This is very very true. The PS5 does hardware decompression, so games by default are now going to be compressed. For a real world reference of how big a difference that makes, see fortnite turning on compression [0] (disclaimer: I worked for epic on fortnite at the time)

[0] https://www.ign.com/articles/fortnites-latest-patch-makes-it...

I had not loaded ign without blockers in years. That was painful.

Hah, sorry. Ive always found their articles to have the least fluff on the topic, despite the awful awful website.

> The PS5 does hardware decompression, so games by default are now going to be compressed.

If that really is cause and effect, that's a bit disappointing. For any game that isn't assuming you have an ultra-fast SSD, normal CPU decompression can handle things quite well. Such a hard nudge shouldn't have been necessary.

With few exceptions, video games have been keeping their assets on disk in compressed form for a long time. It's a major embarrassment when someone ships a game with uncompressed audio, and impractical to ship with uncompressed image, texture or video assets (though these can be shipped in compressed form with unnecessarily high resolution).

The hardware decompression acceleration in new consoles doesn't exactly make it easier to use compression for the game assets. Rather, it makes it practical to load compressed assets on-demand instead of reading and decompressing into RAM during the loading screen.

> With few exceptions, video games have been keeping their assets on disk in compressed form for a long time.

Well, we can point to fortnite up there, but also a very large fraction of the games I have on steam can be shrunk by a third just by applying filesystem-level compression, despite it using weak algorithms and small blocks. I'm sure there's compression involved, but it's not even meeting a minimum bar of competency.