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jbakergraphics.bsky.social
jb
@jbakergraphics.bsky.social
2.5K followers 1.1K following 620 posts
Previously Engine Programmer @idSoftware
interested in: C++/OpenGL/Vulkan/Voxels/SDFs/Pathtracing/GPU Compute/Photography/CpE/Electronics
Co-organizer of Graphics Programming Virtual Meetup

Project writeups, blog posts:
https://jbaker.graphics/index.html
Posts Replies Media Videos
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jbakergraphics.bsky.social
jb @jbakergraphics.bsky.social · Sep 5
pathtraced fractal in Daedalus, using displacement mapping
Reposted by jb
momentsingraphics.bsky.social
The state of the art report on Monte Carlo volume rendering by Jan Novák et al. [2018] gives an excellent introduction:
www.jannovak.info/publications...
Monte Carlo Methods for Volumetric Light Transport Simulation
Jan Novak
www.jannovak.info
November 10, 2025 at 6:48 AM
Reposted by jb
jendrikillner.bsky.social
Graphics Programming weekly - Issue 416 - November 9th, 2025 www.jendrikillner.com/post/graphic...
November 11, 2025 at 4:06 PM
Reposted by jb
wonderofscience.bsky.social
Stunning banner cloud over the Rock of Gibraltar.

Credit: Met Office Gibraltar
October 29, 2025 at 10:04 PM
jbakergraphics.bsky.social
wip volume renderer for the crystals
November 11, 2025 at 2:13 PM
Reposted by jb
jbakergraphics.bsky.social
Couple pieces about this work -

about the sphere packing, using voxel "dart throwing" on the GPU:
jbaker.graphics/writings/sph...

about the reuse of the data structure from the sphere packing, reinterpreting it as a grid-based raytracing acceleration structure:
jbaker.graphics/writings/dda...
September 29, 2025 at 12:07 PM
jbakergraphics.bsky.social
enough infrastructure to start playing with some more meaningful variation in sim parameters now... still the same DLA sim, placing constraints on how a given particle can attach to the set of attached points to model a crystal lattice... renderer still needs work, youtu.be/otULkFxmTLc
November 10, 2025 at 1:54 AM
Reposted by jb
yiningkarlli.bsky.social
With @briankaris.bsky.social winning this year’s SIGGRAPH Practitioner award, it’s a great time to repost his HPG 2022 keynote, which is one of the best talks I’ve ever seen. The tech is cool, yes, but what makes the talk is Brian’s approach to R&D and invention.

www.youtube.com/watch?v=NRnj...
HPG 2022 Keynote: The Journey to Nanite - Brian Karis, Epic Games
YouTube video by High-Performance Graphics
www.youtube.com
May 14, 2025 at 9:36 PM
jbakergraphics.bsky.social
found a nice single header gif lib - github.com/charlietango... - growing crystals
November 8, 2025 at 6:17 PM
jbakergraphics.bsky.social
DLA-grown crystal with about 2 million points
November 8, 2025 at 11:16 AM
jbakergraphics.bsky.social
prior stuff had been using a set of offsets that had been inverted/mirrored along each axis... moving to something where you have more directionality, not including the mirrored copy, you can start to see sort of more "polarized"/ionic structures, with clearer sharp points
November 8, 2025 at 1:23 AM
Reposted by jb
momentsingraphics.bsky.social
RGB rendering is founded on lies and perpetuated by misconceptions about the practicality of spectral rendering. My new blog post series describes a spectral GPU path tracer. Part 1 focuses on how to make it work with existing RGB assets.
momentsingraphics.de/SpectralRend...
November 6, 2025 at 6:46 PM
Reposted by jb
alisonmartin57.bsky.social
Understanding geometry through model making
November 6, 2025 at 5:51 PM
Reposted by jb
pzurita.bsky.social
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/
Posts
irradiance.ca
October 15, 2025 at 6:51 PM
Reposted by jb
jbakergraphics.bsky.social
scaling up, cool to see the grain structures form
November 6, 2025 at 3:55 AM
jbakergraphics.bsky.social
scaling up, cool to see the grain structures form
November 6, 2025 at 3:55 AM
Reposted by jb
gboisse.bsky.social
New blog post! Behind the scenes of some of the techniques involved in making our last PC demo 💫 gboisse.github.io/posts/this-i...
November 5, 2025 at 9:15 PM
Reposted by jb
scifiart.bsky.social
Space art by Ludek Pesek, Ron Miller, Don Dixon, John R Foster (all 1980s)
November 5, 2025 at 11:20 PM
Reposted by jb
rilem.nl
Our seal is actually a stack of sprites! This is how we get fluid animations underwater :) #gamedev
November 4, 2025 at 4:17 PM
jbakergraphics.bsky.social
Finally getting somewhere teaching myself what is available in STL's <mutex>... ended up being the most logical to use a concurrent hashmap of ivec3 keys to shared_ptrs to grid cell management structs that would lock a datastructure-wide write mutex (small vector of usually not more than 16x mat4 elements with oriented particle locations per grid cell) std::unique_lock on write, and a std::shared_lock on read so we can read from many threads without contention, only fully locking the exclusive std::unique_lock when we need to add data to the vector. This avoids any potential race conditions that might be experienced by the readers. This is still unoriented DLA, in the style of my previous experiments (think copper purification anode, blobby growth)... showing fingerlike growths and and treelike structures... next we are adding crystal constraints to particle anchoring, so that you can look at growing crystal systems... the general concept and motivation is described in more detail here: https://jbaker.graphics/writings/dla.html
November 5, 2025 at 2:19 AM
Reposted by jb
jimbalsitis.bsky.social
—
Closed for the Day - Souk in Morocco
—
#photography #leica #monochrome #blackandwhite #morocco
A photograph inside a closed market in Morocco. The scene looks through empty market stalls with light and shadow filtering in from a lattice ceiling.
November 3, 2025 at 1:43 PM
Reposted by jb
colinsmith.bsky.social
The secret’s of Judge Dredd’s Lawmaster, by Bill Le Fever, from 1978’s 2000AD #89.

I strongly suspect some fun was had in assembling the key for this. As with, say: “(5) Secondary headlamps with auto cut-in at 300 k.m.p.h. in fog.” Well, of course!
November 4, 2025 at 3:28 PM
Reposted by jb
deepskydetail.bsky.social
I just posted a video with 130 #astrophotography terms that will probably be really helpful for anyone starting out. I analyzed 2 million words from online forums, found the most common terms, and explain them. I may have missed a few, but there is a lot here.

youtu.be/Gt5PZwyxIys
November 4, 2025 at 12:57 AM
Reposted by jb
puppy.surf
window spam shader for vdmx
(🔊maio1 - user-177606669)
November 4, 2025 at 3:20 AM
Reposted by jb
chrisshank.com
Server Charms are tiny, portable microcontroller setups made with recycled vape batteries. They create their own Wi-Fi network, inviting curious people to connect with their devices where a captive portal opens, leading to small webpages.

codeberg.org/actinomy/ser...
"To serve is to offer something, a name, a website, a document, an idea –something to be shared, something that connects us. But who serves whom? Serving can be a painful experience. It is a relation that carries histories of gendered violence, histories of slavery, serfdom and oppression as we are taught by archives of resistance, black feminists and anti-colonial scholars. This violence extends to the materialities of the earth which is made to serve as resource, ready to be extracted for the minerals that make up the very chip that carries these thoughts as binary strings of information. Serving does not have to manifest as violence if we insist otherwise. Serving can become an act of empowerment when we build infrastructures that serve the needs of local and remote communities evolving around situated knowledge of those around us – while keeping in mind privilege often determines who has access to a community and its resources. The complexities of the internet with its corporate and state entanglements, its huge data centers, relentless data crawlers and transatlantic fibre cables can feel inevitable. To delink from time to time means to shift our focus back to the local networks and groups that we are already part of. We know that the internet is much more than its corporate occupants, it is about forming connections and sharing resources. Independent, selfmade networks remind us of the physical connections that are the base of all kinds of signal transmissions. Intimate networks that make us share and mitigate our vulnerabilities through trust and kinship. In the smallest scope, networks such as this ones."
October 28, 2025 at 5:50 PM
Reposted by jb
andreamatranga.bsky.social
youtu.be/nOXKt9R23sI?... you can see it in action here
Roman Aqueduct Builder with Flow Sim
YouTube video by Andrea Matranga
youtu.be
November 2, 2025 at 7:55 PM