Path tracer test scene, or real life? 🤔

Sarah Jeong is on a tear lately www.theverge.com/policy/86720...

After finishing Dark Souls 3, here is my updated official FromSoft rankings: 1. Sekiro 🥷 2. Bloodborne 3. Elden Ring 4. Demon’s Souls 5. Armored Core 6 6. Dark Souls 3 7. Dark Souls 1

Interesting framing of “centaurs” vs. “reverse centaurs” in this essay about AI www.theguardian.com/us-news/ng-i...

I made my first contribution to RenderDoc! It's tiny, but it's something. :) github.com/baldurk/rend...

2025 has been a real shit year for LGBTQ+ people in the US, especially our trans friends. Please consider donating to The Trevor Project (or wherever you'd like) to show some support, I just did so myself. www.thetrevorproject.org

For my holiday break project I’ve been sketching out an idea to help soften the on-ramp for beginners learning D3D12: a header file that (very lightly) wraps the D3D12 API and only exposes the latest/most-useful bits through straightforward function definitions with ImGui-style inline documentation.

While visiting my parents this week I was exposed to something from a distant past called “TV commercials”. I was surprised how many of them were for slot machine phone apps and online casinos. 😕

-- JOB SEARCH POST/RT APPRECIATED -- Hello everyone! I am available for work (full time position/internship) anywhere in the world with priority going to the EU, starting June 2026. 🧵

My foggy dragon has evolved to have specular reflection and transmission! Unfortunately, he also got noisier. 😅

It's never not fun watching a volumetric path tracer converge

ICE Agent, 7-Year-Old Both Wearing Same ‘Military Commando’ Halloween Costume

I finally found the time and energy to make a new blog and write a couple of posts. This time I wrote about PBR content and game development principles. Both posts are quite different so hopefully people find something interesting on either one of them. irradiance.ca/posts/

For anyone who's tried to use spherical harmonics for lighting and found the notation- and terminology- heavy definitions confusing, highly recommend this classic: grahamhazel.com/blog/2017/12... I think Graham Hazel's blog was down for a long time, years maybe, but works now!

I've got a new blog post for all of you fine folks! It runs through the additions to D3D12 since it was released, and finishes up with some of the things that have changed for me personally in my code. (And yes it's really been 10 years 👴). therealmjp.github.io/posts/ten-ye...

This article popped up in my Apple News feed, and I did a double-take when I saw the head render. My skin/SSS people will know what I’m talking about. 😄

Some fun with shader-based debug drawing: here I'm drawing an arrow for each path taken in the path tracer, starting with the pixel under the mouse cursor.

I will be at SIGGRAPH this year with some SMS people. Hit me up if you want to say hello!

ACM is (finally) transitioning to an Open Access publishing model: www.acm.org/publications...

@christerericson.bsky.social we were having an argument at work about what the “Dyna” in “stdDynaString” means. Any chance you remember?

It’s a good thing that I finally called it quits on Blue Prince, because it looks like it just nuked my save game on PS5. 😅

I’m really feeling for my Microsoft friends today. What a mess.

I just got a new monitor with a built-in KVM switch, and so far it's a much better experience than my old DisplayPort KVM switch. (Hopefully) no more black screens, missing input, or limited resolution/refresh rates.

Pretty great sign spotted yesterday at a No Kings protest

I probably should have done this many years ago, but I finally got around to adding some useful debug features to my old Shadows sample. You can now "freeze" the cascades and zoom out, and draw them to see what they look like. www.youtube.com/watch?v=0D4A... github.com/TheRealMJP/S...

I’ve been giving it a lot of thought, and I think I’m ready to die on the “half resolution means half the width and half the height” hill. If you need me I’ll be settling in up here.

Here is a new blog post of mine, where I dive deep into the theory and math behind ReSTIR GI. Big thanks to Markus Kettunen for verifying the theory, reviewing the article, and catching a key detail I had missed. agraphicsguynotes.com/posts/unders...

RE my post about printf not working with latest DXC: bsky.app/profile/mjp1... I think I've figured out a tweak to avoid the problematic StrLen function that DXC no longer accepts. Basically, just while loop over the string characters until the null terminator is found: github.com/TheRealMJP/E...

Unfortunately it seems that in the latest release of DXC my HLSL printf hack no longer works. Apparently a crash was reported when using it for SPIR-V generation, and the "fix" was to generate an error when using a string literal with templates. 😔 github.com/microsoft/Di...

A nice hugo blog post tool that I built today Sometimes, when we work on a post with a bunch of references, we may need to remove or add items in between. When the article is almost done, adding/removing any of the references requires updating a bunch of hardcoded numbers, which is error prone

In today's new blog post, I try to provide some intuition and clear up some misconceptions about early Z cull behavior on desktop GPUs. Have a read if that interests you! therealmjp.github.io/posts/to-ear...

Lately I find my thoughts drifting to this graph for no particular reason

New blog post! "Measuring acceleration structures", in which we will compare BVH costs on various GPU architectures and drivers and attempt to understand the details enough on AMD hardware to make sense of the numbers! Reposts appreciated :) zeux.io/2025/03/31/m...

Added a DX12 test project for my SH.hlsli library to make sure that it actually works. Good news: it does!

"The best lessons we can find come from other countries that have faced similar power grabs…some lessons can be generalized to provide actionable advice for Democrats, ordinary citizens, civil society and philanthropists, and government employees." www.vox.com/politics/399...

JCGT announcements are now on BlueSky: bsky.app/profile/jcgt...

Richard Van Natta just contributed a GLSL version as well: github.com/TheRealMJP/S...

I just pushed a new "Lite" version of my spherical harmonics shader library for HLSL: github.com/TheRealMJP/S... The Lite version does not use templates, and is compatible with FXC or other compilers that don't support templates and operator overloads.

Balatro be like

Hey there bsky! I'm looking for an internship in graphics/engine programming anywhere in the world (I'm willing to relocate). If you happen to know any open positions or if you work at a company that is taking interns, feel free to contact me! Portfolio ⬇️

New toys…I mean important tools.

After so many years of real-time GI being a near-impossible “holy grail” of graphics, it’s a bit funny that the RTGI era has finally arrived without much fanfare. It’s also interesting that the main benefit ended up being vastly improved dev workflow as opposed to a visual quality increase.

So I guess online ads are just fully transitioning to AI slop now, which sounds about right. It looks like something out of a waking nightmare.

Honestly there’s just so many things I could put at the top of this meme

ATG are a lovely group of people, you should definitely consider working with them!

I made this the other day, and sadly I was once again correct

I sketched this out as part of a conversation about emulating Vulkan's Buffer Device Address (pointers) functionality in D3D12/HLSL: godbolt.org/z/rdn698nMT I've been told this is how Vkon12 does it under the hood, which makes sense since it all fits nicely into 64-bits.

I often get asked about my book recommendations for graphics programming and game development. I updated my old list and made it easier to find on my website. With Black Friday/Cyber Monday, many are on sale right now (at least in Canada/US) www.jendrikillner.com/books/

I know bikeshedding is generally a bad thing, but I do enjoy a kind of “therapeutic bikeshedding” when working on my home code. It’s liberating and comforting to be able to jam on some small problem without having to worry about whether it’s the right choice for project goals or time constraints.