Axel Paris
@axelparis.bsky.social
Research scientist at Adobe. PhD in Computer Graphics. Founding member of Newhead Studio. Interests: implicit surfaces, physics simulations, sustainability.
Web: aparis69.github.io
Game: hitmenparty.com
=> Opinions are my own.
He/Him. Write in 🇨🇵 🇬🇧
Web: aparis69.github.io
Game: hitmenparty.com
=> Opinions are my own.
He/Him. Write in 🇨🇵 🇬🇧
Pinned
Axel Paris
@axelparis.bsky.social
· Aug 5
📜 New SIGGRAPH 2025 paper 🎉
❔How to compute bounding volumes for procedural Signed Distance Fields (SDFs)? This is not so trivial!
💡We propose a simple method called Sphere Carving. It extracts (convex) bounding volumes around SDFs, requires very few evaluations, and is GPU compatible.
❔How to compute bounding volumes for procedural Signed Distance Fields (SDFs)? This is not so trivial!
💡We propose a simple method called Sphere Carving. It extracts (convex) bounding volumes around SDFs, requires very few evaluations, and is GPU compatible.
Reposted by Axel Paris
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".
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".
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...
www.sebastianaaltonen.com
December 16, 2025 at 6:52 PM
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".
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".
Reposted by Axel Paris
Modeling faceted geometry as a 4D point process on a multiscale implicit grid enables real-time glint rendering for standard NDFs, with IS, anisotropy, and colored particles. Memory-free, in a standalone fragment shader. Our SIGGRAPH Asia 2025 paper: research.adobe.com/publication/....
December 17, 2025 at 6:01 AM
Modeling faceted geometry as a 4D point process on a multiscale implicit grid enables real-time glint rendering for standard NDFs, with IS, anisotropy, and colored particles. Memory-free, in a standalone fragment shader. Our SIGGRAPH Asia 2025 paper: research.adobe.com/publication/....
Reposted by Axel Paris
Super happy and honored to share that our paper "BSP-OT: Sparse transport plans between discrete measures in log-linear time" won a *Best paper award* at SIGGRAPH Asia 2025!
If you are here, come see my presentation about this work Wednesday afternoon!
Many thanks to the award committee!
If you are here, come see my presentation about this work Wednesday afternoon!
Many thanks to the award committee!
December 15, 2025 at 3:31 AM
Super happy and honored to share that our paper "BSP-OT: Sparse transport plans between discrete measures in log-linear time" won a *Best paper award* at SIGGRAPH Asia 2025!
If you are here, come see my presentation about this work Wednesday afternoon!
Many thanks to the award committee!
If you are here, come see my presentation about this work Wednesday afternoon!
Many thanks to the award committee!
Reposted by Axel Paris
It's roughly 4 years since I started to work on the 3D sparse fluid solver for what will ultimately become EmberGen 2.0.
A quick look at the current performance state of the solver.
A previous retrospective thread from a couple years ago on that other place: x.com/vassvik/stat...
A quick look at the current performance state of the solver.
A previous retrospective thread from a couple years ago on that other place: x.com/vassvik/stat...
x.com
December 10, 2025 at 1:37 PM
It's roughly 4 years since I started to work on the 3D sparse fluid solver for what will ultimately become EmberGen 2.0.
A quick look at the current performance state of the solver.
A previous retrospective thread from a couple years ago on that other place: x.com/vassvik/stat...
A quick look at the current performance state of the solver.
A previous retrospective thread from a couple years ago on that other place: x.com/vassvik/stat...
Reposted by Axel Paris
New project: ImAnim "Animation Engine for Dear ImGui" by @soufianekhiat.bsky.social
- Repo github.com/soufianekhia...
- Post github.com/ocornut/imgu...
- Repo github.com/soufianekhia...
- Post github.com/ocornut/imgu...
December 1, 2025 at 11:12 AM
New project: ImAnim "Animation Engine for Dear ImGui" by @soufianekhiat.bsky.social
- Repo github.com/soufianekhia...
- Post github.com/ocornut/imgu...
- Repo github.com/soufianekhia...
- Post github.com/ocornut/imgu...
Reposted by Axel Paris
Two years of working on Blender Video Sequence Editor: aras-p.info/blog/2025/11...
So far so good, let's continue! #blender #vse
So far so good, let's continue! #blender #vse
Two years of Blender VSE · Aras' website
aras-p.info
November 23, 2025 at 3:01 PM
Two years of working on Blender Video Sequence Editor: aras-p.info/blog/2025/11...
So far so good, let's continue! #blender #vse
So far so good, let's continue! #blender #vse
Reposted by Axel Paris
The Graphics Replicability Stamp Initiative (GRSI, www.replicabilitystamp.org), a community-driven initiative to promote replicability in Graphics research, is seeking volunteers.
More details in the 'Volunteering' section of the home page.
More details in the 'Volunteering' section of the home page.
Graphics Replicability Stamp Initiative
www.replicabilitystamp.org
November 21, 2025 at 12:16 PM
The Graphics Replicability Stamp Initiative (GRSI, www.replicabilitystamp.org), a community-driven initiative to promote replicability in Graphics research, is seeking volunteers.
More details in the 'Volunteering' section of the home page.
More details in the 'Volunteering' section of the home page.
Reposted by Axel Paris
La recherche basée sur la discussion méthodique appuyée sur les faits et le raisonnement, ne peut pas exercer sa mission d'intérêt général si elle est soumise à la validation politique a priori.
www.mediapart.fr/journal/fran...
Les libertés publiques sont notre affaire à toutes et tous.
www.mediapart.fr/journal/fran...
Les libertés publiques sont notre affaire à toutes et tous.
Annulation d’un colloque sur la Palestine au Collège de France : la chaîne du scandale
L’annulation, sous pression du ministre de l’enseignement supérieur et de la recherche, d’un colloque du Collège de France consacré à la Palestine, constitue un opprobre démocratique et scientifique.
www.mediapart.fr
November 10, 2025 at 4:26 PM
La recherche basée sur la discussion méthodique appuyée sur les faits et le raisonnement, ne peut pas exercer sa mission d'intérêt général si elle est soumise à la validation politique a priori.
www.mediapart.fr/journal/fran...
Les libertés publiques sont notre affaire à toutes et tous.
www.mediapart.fr/journal/fran...
Les libertés publiques sont notre affaire à toutes et tous.
Reposted by Axel Paris
Pendant 20 ans, on m’a dit que pirater les œuvres des artistes c’était le mal absolu et que ça allait détruire la culture, et maintenant on me dit que oh bon, les IA génératives, qu’est-ce qu’on y peut, hein, les gens vont s’en servir de toutes façons.
November 10, 2025 at 7:58 AM
Pendant 20 ans, on m’a dit que pirater les œuvres des artistes c’était le mal absolu et que ça allait détruire la culture, et maintenant on me dit que oh bon, les IA génératives, qu’est-ce qu’on y peut, hein, les gens vont s’en servir de toutes façons.
Reposted by Axel Paris
Présentement dans un train où deux mecs discutent doctement du fait que dans 4 ans plein d'emplois vont disparaître à cause de l'IA et qu'ils utilisent chatGPT pour lire des histoires à leurs enfants 🤪
November 8, 2025 at 5:06 PM
Présentement dans un train où deux mecs discutent doctement du fait que dans 4 ans plein d'emplois vont disparaître à cause de l'IA et qu'ils utilisent chatGPT pour lire des histoires à leurs enfants 🤪
Reposted by Axel Paris
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
New blog post! Behind the scenes of some of the techniques involved in making our last PC demo 💫 gboisse.github.io/posts/this-i...
Reposted by Axel Paris
New blog post about the development of Radical Pie:
terathon.com/blog/radical...
terathon.com/blog/radical...
November 1, 2025 at 10:32 PM
New blog post about the development of Radical Pie:
terathon.com/blog/radical...
terathon.com/blog/radical...
Reposted by Axel Paris
Oooh, new glints paper at SIGGRAPH Asia 2025: perso.telecom-paristech.fr/boubek/paper...
Evaluating and Sampling Glinty NDFs in Constant Time
Geometric features between the micro and macro scales produce an expressive family of visual effects grouped under the term 'glints'.
Efficiently rendering these effects amounts to finding the highlig...
perso.telecom-paristech.fr
October 28, 2025 at 5:38 PM
Oooh, new glints paper at SIGGRAPH Asia 2025: perso.telecom-paristech.fr/boubek/paper...
Reposted by Axel Paris
Working my way through @edzitron.com 's article about the AI bubble. It's fantastic. I do kinda know all this stuff peripherally, but to see it all laid out very clearly with hard numbers is incredibly useful. Thanks Ed!
www.wheresyoured.at/the-case-aga...
www.wheresyoured.at/the-case-aga...
The Case Against Generative AI
Soundtrack: Queens of the Stone Age - First It Giveth
Before we go any further: This is, for the third time this year, the longest newsletter I've ever written, weighing in somewhere around 18,500 wo...
www.wheresyoured.at
October 17, 2025 at 10:20 PM
Working my way through @edzitron.com 's article about the AI bubble. It's fantastic. I do kinda know all this stuff peripherally, but to see it all laid out very clearly with hard numbers is incredibly useful. Thanks Ed!
www.wheresyoured.at/the-case-aga...
www.wheresyoured.at/the-case-aga...
Reposted by Axel Paris
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/
irradiance.ca/posts/
Posts
irradiance.ca
October 15, 2025 at 6:51 PM
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/
irradiance.ca/posts/
Reposted by Axel Paris
Computing the exact bijection of the optimal transport (OT) problem between very large point sets is completely untractable…
In our SIGGRAPH Asia 2025 paper: “BSP-OT: Sparse transport plans between discrete measures in log-linear time” we get one with typically 1% of error in a few seconds on CPU!
In our SIGGRAPH Asia 2025 paper: “BSP-OT: Sparse transport plans between discrete measures in log-linear time” we get one with typically 1% of error in a few seconds on CPU!
October 1, 2025 at 1:55 PM
Computing the exact bijection of the optimal transport (OT) problem between very large point sets is completely untractable…
In our SIGGRAPH Asia 2025 paper: “BSP-OT: Sparse transport plans between discrete measures in log-linear time” we get one with typically 1% of error in a few seconds on CPU!
In our SIGGRAPH Asia 2025 paper: “BSP-OT: Sparse transport plans between discrete measures in log-linear time” we get one with typically 1% of error in a few seconds on CPU!
Reposted by Axel Paris
OpenAI's new Sora video generator to require copyright holders to opt out, WSJ reports
Putain de parasites de merde. J'en ai marre, c'est pas à toi de devoir te retirer de leur merde, c'est à eux d'avoir les droits putain.
www.reuters.com/technology/o...
Putain de parasites de merde. J'en ai marre, c'est pas à toi de devoir te retirer de leur merde, c'est à eux d'avoir les droits putain.
www.reuters.com/technology/o...
OpenAI's new Sora video generator to require copyright holders to opt out, WSJ reports
OpenAI is planning to release a new version of its Sora video generator that creates videos featuring copyrighted material, unless copyright holders opt out of having their work appear, the Wall Street Journal reported on Monday, citing people familiar with the matter.
www.reuters.com
September 29, 2025 at 7:52 PM
OpenAI's new Sora video generator to require copyright holders to opt out, WSJ reports
Putain de parasites de merde. J'en ai marre, c'est pas à toi de devoir te retirer de leur merde, c'est à eux d'avoir les droits putain.
www.reuters.com/technology/o...
Putain de parasites de merde. J'en ai marre, c'est pas à toi de devoir te retirer de leur merde, c'est à eux d'avoir les droits putain.
www.reuters.com/technology/o...
Reposted by Axel Paris
Les 1,8 millions de signatures de la pétition de Philippe de Villiers contre l'immigration sont complètement bidons, et je peux le prouver.
Mais il y a plus intéressant, ce qu'il y a derrière, à savoir une opération de l'empire Bolloré. Un thread 🧵⤵️ https://t.co/hHF2dUqi8Z
Mais il y a plus intéressant, ce qu'il y a derrière, à savoir une opération de l'empire Bolloré. Un thread 🧵⤵️ https://t.co/hHF2dUqi8Z
September 24, 2025 at 9:07 PM
Les 1,8 millions de signatures de la pétition de Philippe de Villiers contre l'immigration sont complètement bidons, et je peux le prouver.
Mais il y a plus intéressant, ce qu'il y a derrière, à savoir une opération de l'empire Bolloré. Un thread 🧵⤵️ https://t.co/hHF2dUqi8Z
Mais il y a plus intéressant, ce qu'il y a derrière, à savoir une opération de l'empire Bolloré. Un thread 🧵⤵️ https://t.co/hHF2dUqi8Z
Reposted by Axel Paris
Eh ben celle-là, en termes de tartufferie, elle vient de faire péter le plafond de la Sixtine.
September 22, 2025 at 11:21 AM
Eh ben celle-là, en termes de tartufferie, elle vient de faire péter le plafond de la Sixtine.
Reposted by Axel Paris
i don’t think people on bluesky understand the severity of this situation.
i woke up to literally hundreds of texts from friends and family thinking about either moving back home to india or applying to other countries for jobs. this includes me.
i woke up to literally hundreds of texts from friends and family thinking about either moving back home to india or applying to other countries for jobs. this includes me.
Those on an H1B cannot return to the US from tomorrow (Sunday) unless paying $100K. This is an out-of-the blue presidential action. We’ll see software engineers stranded abroad.
One easy to predict outcome: those on US visas will travel less… for work, for conferences etc.
One easy to predict outcome: those on US visas will travel less… for work, for conferences etc.
September 20, 2025 at 12:20 PM
i don’t think people on bluesky understand the severity of this situation.
i woke up to literally hundreds of texts from friends and family thinking about either moving back home to india or applying to other countries for jobs. this includes me.
i woke up to literally hundreds of texts from friends and family thinking about either moving back home to india or applying to other countries for jobs. this includes me.
Reposted by Axel Paris
En 1970, tous les banquiers d'Irlande ont fait grève. Ils pensaient que ça mettrait le pays à genoux. Raté. Après 6 mois, tout allait toujours bien, le PIB a même augmenté. Par contre quand les éboueurs de New York ont fait grève 10 jours, il a fallu déclarer l'urgence sanitaire.
September 15, 2025 at 1:24 PM
En 1970, tous les banquiers d'Irlande ont fait grève. Ils pensaient que ça mettrait le pays à genoux. Raté. Après 6 mois, tout allait toujours bien, le PIB a même augmenté. Par contre quand les éboueurs de New York ont fait grève 10 jours, il a fallu déclarer l'urgence sanitaire.
Reposted by Axel Paris
Ce week-end, j'ai pas mal donné mes tripes :/
Les papiers qui en sont sortis n'étaient pas les mieux, mais j'ai essayé de coucher un article de fond construit, sur comment fonctionne la dynamique audience/influenceurs d'un événement comme le ZEvent.
www.linkedin.com/posts/flef_z...
Les papiers qui en sont sortis n'étaient pas les mieux, mais j'ai essayé de coucher un article de fond construit, sur comment fonctionne la dynamique audience/influenceurs d'un événement comme le ZEvent.
www.linkedin.com/posts/flef_z...
September 10, 2025 at 6:42 AM
Ce week-end, j'ai pas mal donné mes tripes :/
Les papiers qui en sont sortis n'étaient pas les mieux, mais j'ai essayé de coucher un article de fond construit, sur comment fonctionne la dynamique audience/influenceurs d'un événement comme le ZEvent.
www.linkedin.com/posts/flef_z...
Les papiers qui en sont sortis n'étaient pas les mieux, mais j'ai essayé de coucher un article de fond construit, sur comment fonctionne la dynamique audience/influenceurs d'un événement comme le ZEvent.
www.linkedin.com/posts/flef_z...
🚀The code for Lipschitz Pruning is now online thanks to @wbrbr.bsky.social🚀
🔗 github.com/wbrbr/Lipsch...
It's a simple Vulkan app useful for experiments. Also, the monument done by @elie-michel.bsky.social is released under a CC-BY license📄
(poke @mattkeeter.com I remember you asked!)
🔗 github.com/wbrbr/Lipsch...
It's a simple Vulkan app useful for experiments. Also, the monument done by @elie-michel.bsky.social is released under a CC-BY license📄
(poke @mattkeeter.com I remember you asked!)
August 18, 2025 at 9:48 AM
🚀The code for Lipschitz Pruning is now online thanks to @wbrbr.bsky.social🚀
🔗 github.com/wbrbr/Lipsch...
It's a simple Vulkan app useful for experiments. Also, the monument done by @elie-michel.bsky.social is released under a CC-BY license📄
(poke @mattkeeter.com I remember you asked!)
🔗 github.com/wbrbr/Lipsch...
It's a simple Vulkan app useful for experiments. Also, the monument done by @elie-michel.bsky.social is released under a CC-BY license📄
(poke @mattkeeter.com I remember you asked!)
Reposted by Axel Paris
Vous avez sûrement déjà lu que la climatisation aggrave les canicules car l’air chaud rejeté à l’extérieur augmenterait la température des villes de 2 à 3°C.
Vérifions ce que disent vraiment les études scientifiques à ce sujet 🧑🔬
(lisez jusqu’au bout, car vous allez être 🤯🤯 à la fin)
#Thread
⬇️⬇️
Vérifions ce que disent vraiment les études scientifiques à ce sujet 🧑🔬
(lisez jusqu’au bout, car vous allez être 🤯🤯 à la fin)
#Thread
⬇️⬇️
August 15, 2025 at 7:37 PM
Vous avez sûrement déjà lu que la climatisation aggrave les canicules car l’air chaud rejeté à l’extérieur augmenterait la température des villes de 2 à 3°C.
Vérifions ce que disent vraiment les études scientifiques à ce sujet 🧑🔬
(lisez jusqu’au bout, car vous allez être 🤯🤯 à la fin)
#Thread
⬇️⬇️
Vérifions ce que disent vraiment les études scientifiques à ce sujet 🧑🔬
(lisez jusqu’au bout, car vous allez être 🤯🤯 à la fin)
#Thread
⬇️⬇️
Reposted by Axel Paris
"why [would] anyone intelligent enough to be a scientist choose to be one [given] the unfavorable risk-to-reward ratio "?
One of the most intelligent people you could meet offers some answers: having ideas, watching them develop, and sharing them journals.biologists.com/jcs/article/...
One of the most intelligent people you could meet offers some answers: having ideas, watching them develop, and sharing them journals.biologists.com/jcs/article/...
Why would anyone want to be a scientist?
It is difficult to fathom why anyone intelligent enough to be a scientist would actually choose to be one. Doing good science requires the utmost exertion of body, mind and spirit, yet is consistently...
journals.biologists.com
August 15, 2025 at 4:16 PM
"why [would] anyone intelligent enough to be a scientist choose to be one [given] the unfavorable risk-to-reward ratio "?
One of the most intelligent people you could meet offers some answers: having ideas, watching them develop, and sharing them journals.biologists.com/jcs/article/...
One of the most intelligent people you could meet offers some answers: having ideas, watching them develop, and sharing them journals.biologists.com/jcs/article/...