Denis Ershov

YouTube video by Molecular Matters "Project Echo" early pre-alpha footage

I've been working on something new since August 2025 and have decided to finally spill the beans:
Introducing "Project Echo", a deterministic Record & Replay tool for PS5:
www.youtube.com/watch?v=K_sd...

Please read the video description and let me know your brutally honest feedback!

New post on how to do real-time diffuse global illumination using surfels and #WebGPU: juretriglav.si/surfel-based... #threejs

Short conclusion of this Weekend project using Claude Code:

It currently feels like it's going to be more like this for the majority of people for at least the nearest future, butchering the lovely graphic from @mjwhansen.com:

I made a directional noise type I call Phacelle Noise which is pretty fast!

Is it new or does something functionally identical already exist? I'm not sure! But I didn't come across one like this yet anyway, so here's my findings:
blog.runevision.com/2026/01/phac...

#Graphics #Shaders #Shadertoy

This post shows how to get different constants for the R2 low discrepancy sampling sequence which have the same properties, but are smaller valued, so behave better in floating point at high sample counts.
www.martysmods.com/a-better-r2-...

Graphics Programming weekly - Issue 423 - January 11th, 2026 www.jendrikillner.com/post/graphic...

Optimizing spatiotemporal variance-guided filtering for modern GPU architectures jcgt.org/published/00...

YouTube video by Jorrit Rouwe A strand based hair simulation running on GPU

A sneak peak of what I've been working on: A strand based hair system for Jolt Physics (WIP): youtu.be/Rl19G0c003o

New blog post is finally up: (Ab)using Shader Execution Reordering.

A bit of outside the box usage of SER (for better or worse).

debaetsd.github.io/posts/ser/

YouTube video by Mike Turitzin I'm making a game engine based on dynamic signed distance fields (SDFs)

The video:

youtu.be/il-TXbn5iMA

The fact that the entire industry is now wasting time working on, integrating, analyzing, reviewing, and commenting on frame generation is so sad. Surely there are actually productive things we all can be doing instead.

Graphics Programming Conference The Graphics Programming Conference is a conference for graphics programmers, from student to industry veteran, taking place in November in Europe.

All the presentations slides of the Graphics Programming Conference 2025 are up #GPC2025
graphicsprogrammingconference.com/archive/2025/

My "How to Vulkan in 2026" @vulkan.org #Vulkan guide is now publicly available at www.howtovulkan.com

I still consider it a preview, though I'm mostly happy with it and only plan on changing minor things and incorporating some feedback.

This is a great introduction to differentiable / inverse rendering - rasterization specifically.
I've read through it and am currently working on implementing some things.
jjbannister.github.io/tinydiffrast/

"An Experimental Approach to printf in HLSL" from the one and only
www.abolishcrlf.org/2025/12/31/P...

New post up!

Bindless Oriented Graphics Programming
alextardif.com/BindlessProg...

New post! "Realtime Raytracing in Bevy 0.18 (Solari)"

jms55.github.io/posts/2025-1...

Wow, what model of laptop is this?

Screenshot of the blog post.

I got the first post about direct lighting material occlusion up on my blog. On this one I go over the commonly used micro-occlusion approach and its limitations, and I start digging into micro-shadowing as an improvement.

irradiance.ca/posts/micros...

Ever seen one of these, and wondered *why* they work? 🧵

This is a so-called Bitonic sorting network, and the illustrations show the two common ways to implement them. From an implementation point of view the two methods are effectively the same, so which one you pick just comes down to preference.

Thanks for the excellent post!
It seems that all graphics programmers are gradually striving for a similar minimal API without legacy abstractions and with minimal cognitive load.

No Graphics API — Sebastian Aaltonen Graphics APIs and shader languages have significantly increased in complexity over the past decade. It’s time to start discussing how to strip down the abstractions to simplify development, improve pe...

My "No Graphics API" blog post is live! Please repost :)
www.sebastianaaltonen.com/blog/no-grap...

I spend 1.5 years doing this. Full rewrite last summer and another partial rewrite last month. As Hemingway said: "First draft of everything is always shit".

a bunch of very specifically named hardcoded boolean fields in a single script representing the entire save state of the game

"save systems should dynamically handle object IDs and automatically populate the serialized data of every object that requires save states, and then for dialogue progression it needs to-"

team cherry:
WRONG. 1400 hardcoded fields in PlayerData.cs

Final version for the 2D Morton decode functions. Fairly happy with the structure in general.

A 64-bit version should be easy enough to produce, by just using the 32-bit version twice and combining the results.

After nine years of development, meshoptimizer has reached its first major version, 1.0!

This release focuses on improvements in clusterization and simplification as well as stabilization. Here's a release announcement with more details on past, present and future; please RT!

meshoptimizer.org/v1

Graphics Programming weekly - Issue 419 - December 7th, 2025 www.jendrikillner.com/post/graphic...

Graphics Programming weekly - Issue 418 - November 30th, 2025 www.jendrikillner.com/post/graphic...

A pretty wild debugging story:

When updating Dawn (Chrome's WebGPU lib), I saw a +50% jump in GPU timings for most/all of my GPU timers (measuring draws, dispatches, etc.).

I bisected Dawn's commit history to find the commit where the perf regression happened, and it ...

1/

The post on using spatial hashing with raytraced ambient occlusion attracted quite a bit of interest so I expanded it into a blog post to discuss how it works behind the scenes to both reduce the noise and its cost. interplayoflight.wordpress.com/2025/11/23/s...

Here's some cute bounding box functions for 2D shapes. A longer list here: iquilezles.org/articles/bbo...