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Cake day: June 27th, 2023

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  • Funnily enough, one of the few legitimately impactful non-enterprise uses of AVX512 I’m aware of is that it does a really good job of accelerating emulation of the Cell SPUs in RPCS3. But you’re absolutely right, those things are very funky and implementing their functions is by far the most difficult part of PS3 emulation.

    Luckily, I think most games either didn’t do much with them or left programming for them to middleware, so it would mostly be first- and second-party games that would need super-extensive customisation and testing. Sony could probably figure it out, if they were convinced there was sufficient demand and potential profit on the other side.


  • The Xbox 360 was based on the same weird, in-order PowerPC 970 derived CPU as the PS3, it just had three of them stuck together instead of one of them tied to seven weird Cell units. The TL;DR of how Xbox backwards compatibility has been achieved is that Microsoft’s whole approach with the Xbox has always been to create a PC-like environment which makes porting games to or from the Xbox simpler.

    The real star of the show here is the Windows NT kernel and DirectX. Microsoft’s core APIs have been designed to be portable and platform-agnostic since the beginning of the NT days (of course, that isn’t necessarily true of the rest of the Windows operating system we use on our PCs). Developers could still program their games mostly as though they were targeting a Windows PC using DirectX since all the same high-level APIs worked in basically the same way, just with less memory and some platform-specific optimisations to keep in mind (stuff like the 10MB of eDRAM, or that you could always assume three 3.2GHz in-order CPU cores with 2-way SMT).

    Xbox 360 games on the Xbox One seem to be run through something akin to Dolphin’s “Übershaders” - in this case, per-game optimised modifications of an entire Xenon GPU stack implemented in software running alongside the entire Xbox 360 operating environment in a hypervisor. This is aided by the integration of hardware-level support for certain texture and audio formats common in Xbox 360 games into the Xbox One’s CPU design, similarly to how Apple’s M-series SoCs integrate support for x86-style memory ordering to greatly accelerate Rosetta 2.

    Microsoft’s APIs for developers to target tend to be fairly platform-agnostic - see Windows CE, which could run on anything from ARM handhelds to the Hitachi SH-4 powered Sega Dreamcast. This enables developers who are mostly experienced in coding for x86 PCs running Windows to relatively easily start writing programs (or games) for other platforms using those APIs. This also has the beneficial side-effect of allowing Microsoft to, with their collective first-hand knowledge of those APIs, create compatibility layers on an x86 system that can run code targeted at a different platform.





  • Did you read the article? Excerpts include:

    Generally, in business, it is sensible to provide your customers with what they want. With Twitter, the meme-makers’ favourite billionaire is doing the opposite. The cyber-trucker is trying his best to cull his customer base.

    Threads is what would happen if Twitter and Instagram made out in a bowling alley. It’s all their worst parts combined - but it may well succeed. Rocket-man Musk’s changes to Twitter have not exactly made it ‘brand friendly’. Threads, meanwhile, is shaping up to be a paradise for in-your-face brands - and the AdTech industry would love for you to join them

    and

    Threads’ naffness won’t stop its success. It’s data-scraping fluffily dressed up as substandard corporate twaddle. It’s a cringe-inducing privacy invasion. It’s not meant for users, but that doesn’t really matter: you’re not a user, you’re a product.

    It’s describing Threads as a product not for users, but advertisers. The perfect brand-friendly non-place for companies to stick their marketing crap. That doesn’t really come across as a ringing endorsement to me.




  • IMAX 1570 film is equivalent to somewhere between 12K and 18K resolution, though as you say that’s only going to matter on a really big display or if you’re creating content for future VR headsets. As for frame rate, more than 24 FPS doesn’t really seem popular in cinema - I remember that Hobbit film getting quite a negative reaction when it tried 48 FPS, and then there’s the Soap Opera Effect. The colour characteristics of different kinds of film also appeal to some artistic filmmakers.

    None of those points really justify the significantly more expensive and complicated workflow that comes with analogue film, mind. I do wish digital hadn’t taken over so soon because a whole bunch of media is now stuck with 480p digital as the best it’s realistically ever going to look barring AI upscaling, but I can’t say I really blame the producers for making that decision because digital is far less of a pain in the ass.



  • Centralisation in this instance refers to control over the network and standard itself rather than control over what’s posted on it. There’s no single authority that can unilaterally change how every Fediverse instance and system works - for example, there isn’t anyone who can decree that from now on Lemmy will no longer allow connections from Canada, or that nobody is allowed to post pictures of capybaras any more.

    It’s intended to prevent a /u/spez or Elon Musk situation where one asshole can bring down the entire ecosystem built around an API. Nothing stops anyone else from hosting their own instance if they dislike lemmy.world, whereas if you don’t like Twitter, you can’t just host your own copy of it.




  • Because the last decade has shown the rather terrible consequences of private, proprietary and profit-driven networks like Twitter and Meta’s various crap becoming de facto part of the common infrastructure of public life. A lot of public transit services publish service updates on Twitter. Most politicians have a Twitter presence. Many restaurants and small businesses don’t even have websites anymore - just Facebook pages.

    We want to stop exploitative for-profit entities from furthering their stranglehold on essential parts of everyday life. Nobody should be forced against their will to use crap like Facebook or Twitter, and that means advancing viable alternatives to those platforms that can fill the role they do in the internet era. If the “digital town square” idea is to live on, it should be as a commons like an actual town square, not a publicly-traded company or a billionaire’s personal cult compound.