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
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/...
Reposted by Axel Paris
Presenting this paper tomorrow morning at 9:30am, during the Lightning Fast Geometry session⚡
Come check it out if you can!
Come check it out if you can!
📜 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.
August 13, 2025 at 11:48 PM
Presenting this paper tomorrow morning at 9:30am, during the Lightning Fast Geometry session⚡
Come check it out if you can!
Come check it out if you can!
Reposted by Axel Paris
“In Finland, the number of homeless people has fallen sharply. Those affected receive a small apartment & counselling with no preconditions. 4 out of 5 people affected make their way back into a stable life. And all this is CHEAPER than accepting homelessness.”
It costs a lot less to house people.
It costs a lot less to house people.
Finland ends homelessness and provides shelter for all in need - scoop.me
In Finland, the number of homeless people has fallen sharply. Why? The country applies the "Housing First" concept agains homelessness.
thebetter.news
August 12, 2025 at 4:32 AM
“In Finland, the number of homeless people has fallen sharply. Those affected receive a small apartment & counselling with no preconditions. 4 out of 5 people affected make their way back into a stable life. And all this is CHEAPER than accepting homelessness.”
It costs a lot less to house people.
It costs a lot less to house people.
Reposted by Axel Paris
Il y a 10 ans, il y avait d’énormes manifestations pour défendre la liberté d’expression. Aujourd’hui, critiquer le premier ministre vous envoie en garde à vue et stage de citoyenneté - à vos frais. bsky.app/profile/ludi...
Rappel des 3 phrases prononcées par cette femme à l'adresse du premier ministre:"Vous avez des comptes à rendre à tous les enfants qui se sont fait violer. Et aux gens qui n’ont pas un sou. Vous n’avez rien à faire ici M. Bayrou".
Pour ces 3 phrases:
- garde à vue
- stage de citoyenneté à ses frais
Pour ces 3 phrases:
- garde à vue
- stage de citoyenneté à ses frais
August 9, 2025 at 4:07 PM
Il y a 10 ans, il y avait d’énormes manifestations pour défendre la liberté d’expression. Aujourd’hui, critiquer le premier ministre vous envoie en garde à vue et stage de citoyenneté - à vos frais. bsky.app/profile/ludi...
Reposted by Axel Paris
Par contre : plus de congés, la semaine de quatre jours et la taxation des riches - sans conditions sportives.
August 11, 2025 at 10:11 AM
Par contre : plus de congés, la semaine de quatre jours et la taxation des riches - sans conditions sportives.
Reposted by Axel Paris
Ok, calmer, post-stream digested thoughts about GPT-5. I'll keep it short.
1. A lot of the presentation was vibes-based. "Is GPT-5 better at XYZ? This person said they feel it is. Ok, moving on..." I wonder how much this is because OpenAI think a lot of people use ChatGPT based on vibes already.
1. A lot of the presentation was vibes-based. "Is GPT-5 better at XYZ? This person said they feel it is. Ok, moving on..." I wonder how much this is because OpenAI think a lot of people use ChatGPT based on vibes already.
August 7, 2025 at 7:02 PM
Ok, calmer, post-stream digested thoughts about GPT-5. I'll keep it short.
1. A lot of the presentation was vibes-based. "Is GPT-5 better at XYZ? This person said they feel it is. Ok, moving on..." I wonder how much this is because OpenAI think a lot of people use ChatGPT based on vibes already.
1. A lot of the presentation was vibes-based. "Is GPT-5 better at XYZ? This person said they feel it is. Ok, moving on..." I wonder how much this is because OpenAI think a lot of people use ChatGPT based on vibes already.
📜 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.
August 5, 2025 at 3:02 PM
📜 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
We're looking forward to presenting our talk at #SIGGRAPH2025 on Sunday Aug. 10 - 11AM, in West Building, Rooms 301-305!
Ever wondered how badly we're all addicted to buying new GPUs in graphics labs?
Come see our talk at #SIGGRAPH2025 to discuss how we can collectively move "Towards a sustainable use of GPUs in Graphics Research"
with @elie-michel.bsky.social @axelparis.bsky.social Octave Crespel and Felix Hähnlein
Come see our talk at #SIGGRAPH2025 to discuss how we can collectively move "Towards a sustainable use of GPUs in Graphics Research"
with @elie-michel.bsky.social @axelparis.bsky.social Octave Crespel and Felix Hähnlein
![MOTIVATION
Graphical Processing Units (GPUs) are at the core of Computer Graphics research. These chips are critical for rendering images, processing geometric data, and training machine learning models. Yet, the production and disposal of GPUs emits CO2 and results in toxic e-waste [1].
METHOD
We surveyed 888 papers presented at SIGGRAPH (premier conference for computer graphics research), from 2018 to 2024, and systematically gathered GPU models cited in the text.
We then contextualize the hardware reported in papers with publicly available data of consumers’ hardware [2, 3].
REFERENCES
[1] CRAWFORD, KATE. The Atlas of AI: Power, Politics, and the Planetary Costs of Artificial Intelligence. Yale University Press, 2021.
[2] STEAM. Steam Hardware Survey. https://store.steampowered.com/hwsurvey
[3] BLENDER. Blender Open Data. https://opendata.blender.org](https://cdn.bsky.app/img/feed_thumbnail/plain/did:plc:gpta66q3ots5ia23kvfzpu5r/bafkreidqnyftshkcmtpzqlxsknnvcn34xszafururgdixddtcuzrmwloqq@jpeg)
August 4, 2025 at 6:34 PM
We're looking forward to presenting our talk at #SIGGRAPH2025 on Sunday Aug. 10 - 11AM, in West Building, Rooms 301-305!