Lightnews — Scholar-powered news

Matt Godbolt @matt.godbolt.org · 9h

Some early 2000s "GPU" processing on a Playstation 2, using the fact that reinterpreting the screen as an 8-bit texture let you do a multiply for red, green, and blue separately (instead of only with alpha as the hardware really supported)... xania.org/201003/swat-... :) Fun times!

Rendering in SWAT: PlayStation 2 — Matt Godbolt’s blog

How we wedged a fully fledged Xbox engine onto the PlayStation 2

xania.org

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Reposted by Matt Godbolt

LaurieWired @lauriewired.bsky.social · 1d

Every year, CppCon has a “Back to Basics” Track, which they also upload to youtube. I highly recommend all of them.

  Instead of being constrained to “old school” CS teaching logic, it’s a demonstration of fuller, modern capabilities.

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Reposted by Matt Godbolt

LaurieWired @lauriewired.bsky.social · 1d

Colleges do a terrible job of teaching C++.  

It’s not “C with Classes”. Injected into curriculums as a demonstration of early CS concepts, it leaves many with a sour taste.  

Students later immediately fall in love with the first language that *doesn’t* feel that way.

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Reposted by Matt Godbolt

Inverse Phase @inversephase.bsky.social · 2d

It can be hard to delineate me from my projects, and even my projects from one another. I typed this thing up and I think it might do an okay job: www.patreon.com/posts/140227...

Life's been hard, but it's about to improve | Inverse Phase

Get more from Inverse Phase on Patreon

www.patreon.com

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Reposted by Matt Godbolt

Matt Godbolt @matt.godbolt.org · 3d

Top marks if you spot the @compiler-explorer.com swag in the video :-)

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Matt Godbolt @matt.godbolt.org · 3d

Top marks if you spot the @compiler-explorer.com swag in the video :-)

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Matt Godbolt @matt.godbolt.org · 3d

And for those in the comments asking about Ken Thompson's Trusting attust paper... @lauriewired.bsky.social has just dropped an awesome video going into huge detail: youtu.be/Fu3laL5VYdM?...

The Original Sin of Computing...that no one can fix

YouTube video by LaurieWired

youtu.be

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Matt Godbolt @matt.godbolt.org · 5d

Very sad news about Rainer, who passed away earlier this week. If you can help support #ALS research please consider donating.

My thoughts are with his family. We as a C++ community were lucky to have him.

Hacker News 50 @betterhn50.e-work.xyz · 5d

The C++ programmer and educator Rainer Grimm has passed away https://www.modernescpp.com/index.php/my-als-journey-31-31-the-end/ (https://news.ycombinator.com/item?id=45527156)

The C++ programmer and educator Rainer Grimm has passed away

www.modernescpp.com

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Matt Godbolt @matt.godbolt.org · 6d

"Hi!". And thanks for the stickers!!

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Reposted by Matt Godbolt

Compiler Explorer @compiler-explorer.com · 7d

And we're back. A temporary misconfiguration - we have fixed it and all is well..sorry for the problem! -mg

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Reposted by Matt Godbolt

Compiler Explorer @compiler-explorer.com · 7d

Investigating why Windows compilers are down! Watch this space, and sorry for any inconvenience -mg

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Reposted by Matt Godbolt

dan sinker @dansinker.com · 9d

lock in friends. look out for each other. we're gonna get through this together.

Governor JB Pritzker @govpritzker.illinois.gov · 9d

This evening, President Trump is ordering 400 members of the Texas National Guard for deployments to Illinois, Oregon, and other locations within the United States. No officials from the federal government called me directly to discuss or coordinate.

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Matt Godbolt @matt.godbolt.org · 9d

Similar here in the outer edges of "war-torn" Chicago. Kids playing outside, folks walking their dogs in the uncommonly warm October afternoon. Some people have the audacity to water their lawns; unaware of the peril they're in!

Suffering in a war zone...not. me sat outside my house with my dog in beautiful sunshine and peace and quiet

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Matt Godbolt @matt.godbolt.org · 10d

Yes, thanks :-). Or I've adapted to it :-)

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Reposted by Matt Godbolt

Adrian's Digital Basement @adriansdigitalbasement.com · 11d

Coming to your from the warzone that is Portland Oregon. Yesterday, 1:30pm downtown by the Federal Building and Police HQ: total mayhem!

Someone was actually picking up some trash in the park! A couple miles away on Hawthorne, someone was driving a late 70s Ford Thunderbird.

Oh the humanity!

Portland Oregon, SE Hawthorne Blvd, 145pm, October 2, 2025

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Matt Godbolt @matt.godbolt.org · 11d

It's a TidByt: tidbyt.com

Tidbyt - See What Matters

Tidbyt keeps you updated on transit, weather and more. Leave your phone in your pocket.

tidbyt.com

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Reposted by Matt Godbolt

Foone @foone.bsky.social · 12d

not to point at anyone in particular, but I have been in and on many different internet communities of various shapes/sizes/technologies and one mistake I consistently see made is assuming the technical part of running a community is the hard part.

it's not.
it's the social part.
it's moderation.

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Matt Godbolt @matt.godbolt.org · 12d

Bugger. Something @compiler-explorer.com is missing...

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Reposted by Matt Godbolt

scott⚡️mccloud @scottmccloud.bsky.social · 12d

Written 55 years ago, Schulz's heartfelt clarity cuts through the noise, even today.

h/t @tisserand.bsky.social

Scan of a typed letter from 1970, from Peanuts creator Charles Schulz, addressed to "Joel Lipton, 622 N. Foothill Road, Beverly Hills, Calif. 90210"

It reads:

"Dear Joel:

I think it is more difficult these days to define what makes a good citizen than it has ever been before. Certainly all any of us can do is follow our own conscience and retain faith in our democracy. Sometimes it is the very people who cry out the loudest in favor of getting back to what they call "American Virtues" who lack this faith in our country.

I believe that our greatest strength lies always in the protection of our smallest minorities.

Sincerely yours,

Charles M. Schulz"

At bottom is an illustration of Charlie Brown and Snoopy, a kite wrapped around the dog house.

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Matt Godbolt @matt.godbolt.org · 12d

Thank you!! Sean and @computerphile.bsky.social have been awesome in letting me talk about the things I love

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Reposted by Matt Godbolt

Jason Turner @lefticus.bsky.social · 12d

Check out my C++ On Sea 2025 talk - The Power and Pain of Hidden Symbols!

This talk is very important for performance and binary size, and double important if you do crossplatform development!

youtu.be/-hNv1-FmAec

The Power and Pain of Hidden Symbols in C++ Programming - Jason Turner - C++ on Sea 2025

https://cpponsea.uk --- The Power and Pain of Hidden Symbols in C++ Programming - Jason Turner - C++ on Sea 2025 --- If you develop on Windows, you're used to the pain and annoyance of having to…

youtu.be

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Matt Godbolt @matt.godbolt.org · 13d

Close :-)

Matt Godbolt @matt.godbolt.org · 13d

See if you can guess what nerd sniped me?

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Matt Godbolt @matt.godbolt.org · 13d

How exactly do you get code onto a computer? Like, the machine code? Surely you need a program to assemble it...but if you don't have a computer yet, how do you start the whole process!?

youtu.be/Pu7LvnxV6N0?...

One offhand remark in the middle of this video stole 4 days of work from me :-)

What is Bootstrapping Anyway? - Computerphile

YouTube video by Computerphile

youtu.be

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Reposted by Matt Godbolt

Jason Turner @lefticus.bsky.social · 13d

New C++ Weekly pirate themed constexparrr! (constexpr) swag landing just in time for Halloween!

jason-turner-shop.fourthwall.com/products/con...
jason-turner-shop.fourthwall.com/products/con...
jason-turner-shop.fourthwall.com/products/con...

#constexprallthethings

constexparrr! Pirate Themed t-shirt

jolly roger themed "constexparrr!" C++ Weekly T-Shirt design.

jason-turner-shop.fourthwall.com

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