ReactOS (FOSS "Windows") achieves 3D-accelerated Half-Life on real hardware
157 points
6 hours ago
| 4 comments
| phoronix.com
| HN
theturtletalks
1 hour ago
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Given enough time, open-source will win. Just think about how more and more people are programming and how that will draw them to open-source.
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underscore_ku
1 hour ago
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more people and AI
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NooneAtAll3
5 hours ago
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something I wondered for a while

do windows viruses get ported by such efforts as well?

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TechSquidTV
3 hours ago
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Of course. Maybe not successfully but a "virus" is just software. If it runs software, it runs software, full stop. Maybe the same APIs are not available or behave differently, so it may be buggy or non-functional, but that's true of Half-Life here too.
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shakna
2 hours ago
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WannaCry was able to successfully run on ReactOS in 2025. Most other virsuses do tend to crash, because the memory layout is just a tiny bit different, but yeah, compatibility means compatibility. Lots of malware comes along for the ride.

However, there is a permissions layer that is more nix than Windows, which means the first foothold is still better than XP - you have to choose to execute the file. Self-running things don't tend to infect systems.

Its not a panacea, and there is a risk factor. And there aren't a lot of antivirus systems that can run correctly under ReactOS, because they freak out and think the OS is the malware, because they're scanning hashes for Windows, not another system.

But for a hobby OS, keeping hardware and software accessible after the rest of the world broke access, it still works.

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augusto-moura
4 hours ago
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Some, but not all, most don't. Ideally they would all work, ReactOS doesn't make a priority on being a "safer" option, just an open source option
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canyp
4 hours ago
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Somewhere in the docs they state that they must also recreate whatever bugs the API has, otherwise applications written with those bugs as an (implicit) assumption could misbehave.
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hurtigioll
1 hour ago
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its worse than that, Windows activates/deactivates "bugs" based on the compatibility profile of the app.

so you can set an app to use a Windows XP compatibility profile, and this will simulate Windows bugs which were fixed in more recent versions of the OS

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dmurvihill
1 hour ago
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The payload yes, the exploit hopefully not.
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chadgpt3
5 hours ago
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Yes
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naturalmovement
4 hours ago
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Maybe worry about Linux malware which is a major problem right now everyone is in huge denial about, instead of throwing shade at a hobby OS emulating a 25 year old version of Windows.

ReactOS isn't the one that just had one of its package repos owned (again).

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nvr219
3 hours ago
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What's the major Linux malware problem that everyone is ignoring
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shakna
3 hours ago
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AUR got hit recently [0], by what looks like more work of TeamPCP and friends.

EDIT: Worth noting, Arch ain't hosted on AUR. That's the community side only.

[0] https://archlinux.org/news/active-aur-malicious-packages-inc...

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Grombobulous
2 hours ago
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I would still note that this is not some kind of unique problem to Linux. There have been documented instances of malware making it to the Play Store, which is supposed to have a much more rigorous vetting process than AUR and costs actual money to publish on.
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shakna
1 hour ago
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Just to expand... When the above user is comparing to Windows, who got most of the US government breached, I do think shade against AUR is uncalled for. Its just a community host for packages, comes with warnings, and isn't enabled by default, etc.

I can still happily upgrade via pacman without fear. Haven't been able to update on Windows without concern for over a decade - the malware comes builtin.

[0] https://www.cisa.gov/sites/default/files/2024-03/CSRB%20Revi...

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nvme0n1p1
2 hours ago
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Isn't it funny how such incidents on Linux are rare enough that they make headlines, but on Windows that's been the baseline expected state of things for so long that nobody bats an eye anymore.

Btw if you're running an OS that's never had a malware incident, please, tell us!

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hurtigioll
1 hour ago
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Windows stopped having serious malware problems at least 10 years ago

the ransomware campaigns would have happened on any OS enterprises use, because they were not security flaws in the OS

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alaskahoffman
4 hours ago
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reactos has been in development for 28 years and it can run half-life on real hardware. that is approximately how long half-life 1 itself has existed in the first place!
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ajross
5 hours ago
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While this is sort of laughable out of context (I mean, Steam on Linux for the last few years has run basically everything with full acceleration)...

I think what is being claimed, but not explicitly in the article, is that this is running the NVIDIA driver stack (for an ancient GeForce 8 card) directly, as opposed to emulating DirectX at the API level on top of a Vulkan driver.

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chadgpt3
5 hours ago
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Indeed. ReactOS is to the full Windows stack what Wine is to the userland Windows API.
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himata4113
4 hours ago
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I mean they reimplemented directx without vulkan, that's indeed in a league of their own. wine/proton relies on opengl/vulkan to do anything.
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ddtaylor
3 hours ago
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Wine has had many different DirectX backends over the decades, including one before Vulkan existed obviously.
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himata4113
3 hours ago
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All of them relied on translation (ex: opengl). Proton specifically is focused on dx->vulkan.
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wolvoleo
3 hours ago
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I wouldn't call it laughable. ReactOS was not created only to run half-life. It's just one of their many impressive achievements.
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da_chicken
4 hours ago
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> While this is sort of laughable out of context (I mean, Steam on Linux for the last few years has run basically everything with full acceleration)...

Eh. It's sort of like saying FreeDOS is laughable because DOSBox exists. I think that's missing the point.

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