Float to R8_UNorm conversion has a permitted tolerance of 0.6ulp in the DX spec. 0.55/255 on some GPUs rounds down to 0 and on others rounds up to 1/255. Dangerous behavior when R8_UNorm NumFramesAccumulated=0 is used by a denoiser to mark invalid history... microsoft.github.io/DirectX-Spec...
New blog post! Behind the scenes of some of the techniques involved in making our last PC demo 💫 gboisse.github.io/posts/this-i...
A snippet of the blog post, showing a short explanation of derivatives, as well as a graph of a quadratic function, and a graph of its derivative.
Derivatives, Gradients, Jacobians and Hessians – Oh My!
New mathy blog post to try and make some scary sounding terms less scary.
blog.demofox.org/2025/08/16/d...
It's time to share the program for the 2025 Advances in Real-time Rendering in Games.
Check out all the details here: advances.realtimerendering.com/s2025/index....
and, of course, come attend the course live on Tuesday August 12 at SIGGRAPH in Vancouver!
Only a few days till REAC is here - register, log in, and soak in all the rendering architecture goodness!
Program: enginearchitecture.org/2025.htm
Register: tinyurl.com/register4rea...
See you there!!
An update, a bit of retrospection, and a call for you, yes, you, to help JCGT a bit: www.realtimerendering.com/blog/jcgt-is...
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...
🎮 Graphics Programmers! Ready to shape the future of rendering?
Submit your proposal today for GPU Zen 4, the next volume in the acclaimed GPU Zen series!
📅 Deadline: May 17, 2025
📩Submit to: wolfgang.engel@gmail.com
🔗 gpuzen.blogspot.com
#GraphicsProgramming #Rendering #GameDev #GPUZen #GPU
Tired, lack of sleep, but thrilled to be at San Francisco for #GDC25, for the launch of #AssassinsCreedShadows , to share and give back to the awesome rendering community. schedule.gdconf.com/session/rend...
I decided to open source my implementation of Surfel Radiance Cascades Diffuse Global Illumination, since I'm not longer actively working on it. Hopefully the code can serve as a guide to others who can push this idea further :)
github.com/mxcop/src-dgi
REAC 2025 has been announced! Call for submissions is not OPEN! Deadline is March 28th. Our submission process is simple, give it a try! Make a good case for your presentation and see you at REAC! enginearchitecture.org/2025.htm
I wrote about the journey to make GPU texture compression work everywhere, including some history on how I got into this field. Check it out!
www.ludicon.com/castano/blog...
GPU Friendly Laplacian Texture Blending
jcgt.org/published/00...
Good read on Intel’s new Battlemage GPU, discussing among others architecture, instruction throughput, global memory/local memory/cache bandwidth, atomics and PCIe link. chipsandcheese.com/p/intels-bat...
A new article appears! Finally I had the time to talk about gradient descent :) c0de517e.com/019_autoinig...
JCGT announcements are now on BlueSky: bsky.app/profile/jcgt...
What a journey! Congrats for all those years at Dontnod. Wonderful achievement and many games shipped!
I wrote a blog post on my implementation of the Surfel maintenance pipeline from my Surfel Radiance Cascades project. Most of what I learned came from "SIGGRAPH 2021: Global Illumination Based on Surfels" a great presentation from EA SEED :)
m4xc.dev/blog/surfel-...
New dithering method dropped
I call it Surface-Stable Fractal Dithering and I've released it as open source along with this explainer video of how it works.
Explainer video:
www.youtube.com/watch?v=HPqG...
Source repository:
github.com/runevision/D...
#gamedev #vfx
For an example of how a UNet can be used in the context of temporal upscaling I recommend this Siggraph 2024 presentation community.arm.com/cfs-file/__k...
In our next Tiny Glade update we'll bump the light limit from 32 to 32k while keeping the cost more or less the same.
The small limit has been a cop out, as we didn't quite know how to render huge numbers of (screen-space) shadow-casting lights without severe performance degradation.
Thread divergence during constant buffer reads can have a big perf impact, this presentation discusses how to detect this on NVidia GPUs using GPU Trace and Shader profiler. Also shows how useful access to ISA is for understanding what the shader does under the hood. www.youtube.com/watch?v=HSsP...
Plain slides here: 1drv.ms/p/s!AqBt0HDa...
(OneDrive / online PowerPoint seems a bit cursed, so you may need to give it some time and/or retry it a bunch)
Here's a recording of my Tiny Glade presentation from the Graphics Programming Conference 2024:
www.youtube.com/watch?v=jusW...
It's an any% speedrun of our GPU-driven rendering, shadows, global illumination, water, and DoF, involving a few weird tricks.
The recordings from GPC24 are up, including my talk ! This contains much more information than the slides on their own. Enjoy !
www.youtube.com/watch?v=sHFb...
gpuopen.com/presentation...
Graphics Programming Conference 2024 talks are up. Looking forward to learning the new Tomasz magic :) www.youtube.com/playlist?lis...
Collection of cover images from the books included on the list
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/
We're very close to the release date of GPU Zen 3! a.co/d/gRPy2Ff
