jwtstone

Graphics Programmer.
I like vertices and pixels.

[jwtstone @jwtstone]

Introduce StrokeGen: A revolutionary real-time line art renderer in Blender.
Get releases & Join the development here
https://t.co/ANt5NSZwVh

If you like this project please repost to help it get more attraction🥹
(art from @ucupumar)

[jwtstone @jwtstone]

Somehow describes my relationship with Anthropic

Potion Seller https://t.co/YpVNCDj6a9 via @YouTube

[jwtstone @jwtstone]

I really wonder wtf is going on inside the western gaming industry. After so many disasters yet they still insist on these ridiculous dei stuff

[Memetic Hazard @Memetic_Hazard_]

@Pirat_Nation

[Sebastian Aaltonen @SebAaltonen]

Graphics API should NOT know my data. My CPU code writes it directly to GPU memory. My shaders read it. I use whatever data layout I please. API should not care!

Windows/posix thread launch doesn't ask me to describe the data either. A void ptr is enough! That's good design!

[Sebastian Aaltonen @SebAaltonen]

The first slide of my SIGGRAPH 2026 talk is ready...

I have a short 3-slide history of GPUs (30, 20, 10 years ago) in my slides. Important to know the history to understand why we ended up with the current API design. Hardware was extremely heterogeneous back then. Hard to wrap.

[jwtstone @jwtstone]

A death note to this industry. I feel the clock is ticking. it's about to die out soon...

[John Carmack @ID_AA_Carmack]

My reply to someone considering starting a video game company:

The distribution of possible rewards for starting a video game company are generally not very good today. The market is well served, and gaining a foothold requires strong execution on both business and product issues, along with a substantial amount of luck. Plan to burn through seven figures with a not-great chance of making it back.

If you do go for it, some bits of advice:

Identify your customers clearly before you start. Not just a broad community, but specific people, and imagine them as you make decisions.

Initially, build the smallest, most concise game you can imagine anyone paying for. It will still take much longer than you expect.

Once something exists, hill-climb the value. Hopefully you will have some elements that clearly bring joy to people, which you can magnify. There will inevitably be tons of things that people find confusing, frustrating, or just boring that you will need to fix.

[Sebastian Aaltonen @SebAaltonen]

With optimized storage:

4096x4096 BC7/ASTC4x4 texture + mips = 21.3MB

Million vertices = 24MB
- RGBA16 position (pow2 round up bbox)
- RGB10A2 normal
- RGB10A2 tangent
- RGBA8 color
- RG16 UV [-8,+8]
= 24 bytes/vertex

Million triangles = 3 million indices = 12MB
Mesh = 36MB

[jwtstone @jwtstone]

@SebAaltonen Are those similar to the render node queues in Unity engine

[jwtstone @jwtstone]

@SoftEngineer not a good mindset for mobile gpus : )

[jwtstone @jwtstone]

@SoftEngineer normally hiz downsampler should only happen once in your frame and cost 3% of total frame time.

[jwtstone @jwtstone]

@SebAaltonen Sounds like the algorithm used in Unity

[leon akgae @sileonthill]

happy women’s day

[jwtstone @jwtstone]

@SebAaltonen there's something called onesweep radix sort. similar to single pass scan with decoupled lookback.

[Nicolas Lopez @Nicolas_Lopez_]

Great to see renewed interest in #AssassinsCreedUnity following the new 60fps patch.
If you’re curious about some of the tech behind it— global illumination and early GPU-driven pipeline —I shared a few details in my GDC talk. https://t.co/ValKwUF4tB

#AssassinsCreed

[Dwayne @CtrlAltDwayne]

You come to me, on this day, complaining about usage limits?

I gave you Claude. I gave you Sonnet. I gave you Opus. I gave you artifacts, projects, a search bar. I put the whole operation in your pocket for $20 a month and you come to MY mentions saying "please try again in a few hours" like I owe you something?

You think this is OpenAI? You think we run a circus here? Sam ships a model and does a live demo that crashes on stage. We ship a model and your entire engineering team goes quiet for three days because they're rebuilding everything around it. That's the difference. He makes announcements. I make problems for people.

I have 600 engineers who haven't seen sunlight since October. They eat dinner at their desks out of loyalty. Out of respect. You think ChatGPT has that? ChatGPT has a revolving door and a blog post every time someone leaves. We don't have departures. People don't leave the family.

And you want to tell me the rate limit kicked in during your little afternoon coding session? Brother I am printing intelligence. The servers are on fire in a way that is both metaphorical and occasionally literal. You should be thanking me that you got any messages at all.

You want more capacity? You'll get more capacity. When I decide. Because the next model is already done and it's going to mass manufacture your mass manufacturing and you'll forget you ever opened your mouth.

Don't ever come to my platform with complaints again.

[jwtstone @jwtstone]

Shameness.

[Sam Altman @sama]

Here is re-post of an internal post:

We have been working with the DoW to make some additions in our agreement to make our principles very clear.

1. We are going to amend our deal to add this language, in addition to everything else:

"• Consistent with applicable laws, including the Fourth Amendment to the United States Constitution, National Security Act of 1947, FISA Act of 1978, the AI system shall not be intentionally used for domestic surveillance of U.S. persons and nationals.

• For the avoidance of doubt, the Department understands this limitation to prohibit deliberate tracking, surveillance, or monitoring of U.S. persons or nationals, including through the procurement or use of commercially acquired personal or identifiable information."

It’s critical to protect the civil liberties of Americans, and there was so much focus on this, that we wanted to make this point especially clear, including around commercially acquired information. Just like everything we do with iterative deployment, we will continue to learn and refine as we go.

I think this is an important change; our team and the DoW team did a great job working on it.

2. The Department also affirmed that our services will not be used by Department of War intelligence agencies (for example, the NSA). Any services to those agencies would require a follow-on modification to our contract.

3. For extreme clarity: we want to work through democratic processes. It should be the government making the key decisions about society. We want to have a voice, and a seat at the table where we can share our expertise, and to fight for principles of liberty. But we are clear on how the system works (because a lot of people have asked, if I received what I believed was an unconstitutional order, of course I would rather go to jail than follow it). But

4. There are many things the technology just isn’t ready for, and many areas we don’t yet understand the tradeoffs required for safety. We will work through these, slowly, with the DoW, with technical safeguards and other methods.

5. One thing I think I did wrong: we shouldn't have rushed to get this out on Friday. The issues are super complex, and demand clear communication. We were genuinely trying to de-escalate things and avoid a much worse outcome, but I think it just looked opportunistic and sloppy. Good learning experience for me as we face higher-stakes decisions in the future.

In my conversations over the weekend, I reiterated that Anthropic should not be designated as a SCR, and that we hope the DoW offers them the same terms we’ve agreed to.

We will host an All Hands tomorrow morning to answer more questions.

[nxthompson @nxthompson]

I love this metaphor from Terence Tao—widely considered the world’s greatest living mathematician—about one of the drawbacks of using AI to solve hard math problems. https://t.co/qOVNhfa2cC