Olivier Therrien (@volfaze) profile picture

Olivier Therrien

@volfaze

R&D Graphics Programmer at CDRIN

 Québec, Canada
cdrin.com/blogue
Joined July 2016
  • Tweets69
  • Following383
  • Followers336
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Photo by Olivier Therrien (@volfaze)Photo by Olivier Therrien (@volfaze)Photo by Olivier Therrien (@volfaze)Photo by Olivier Therrien (@volfaze)Photo by Olivier Therrien (@volfaze)Photo by Olivier Therrien (@volfaze)Photo by Olivier Therrien (@volfaze)Photo by Olivier Therrien (@volfaze)
Olivier Therrien retweeted
shawn0326 (@shawn03261) profile picture
shawn0326
@shawn03261Sep 22
WebGPU实现的gtvbao，效果超出预期。 算法参考：github.com/norio/three-gtvba… 模型来自：sketchfab.com/shahriyarshahr…
Image from shawn0326 (@shawn03261)
Image from shawn0326 (@shawn03261)
Image from shawn0326 (@shawn03261)
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Olivier Therrien retweeted
Mr F (@guycalledfrank) profile picture
Mr F@guycalledfrank26 Dec 2025
Meanwhile Suslik (Alexander Sannikov) is improving Radiance Cascades for the general 3D case: youtube.com/watch?v=rG2aok2S…
Sparse Radiance Cascades: goodbye screenspace

Sparse Radiance Cascades: goodbye screenspace

My previous sparse RC demo was running with a screenspace raymarche...

youtube.com
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Olivier Therrien retweeted
AMD GPUOpen (@GPUOpen) profile picture
AMD GPUOpen
@GPUOpen20 Nov 2025
Capsaicin is not just for tacos, it's also our developer rendering framework! v1.3 is out now: 🌶️ Added heat with GI-1.2, which includes multiple-bounce indirect lighting. 🌶️ HDR support with spicier tone mapping. And much, much more: gpuopen.com/learn/gi-1-2-mul…
Introducing AMD GI-1.2 with multibounce indirect real-time rendering

Introducing AMD GI-1.2 with multibounce indirect real-time rendering

AMD GI-1.2, our real-time Global Illumination solution, is available now as part of the AMD Capsaicin Framework v1.3.

gpuopen.com
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Olivier Therrien retweeted
Florisium (@florisium) profile picture
Florisium
@florisium7 Oct 2025
A bit technical thread 🧵 I’ve been improving the in-game ambient occlusion system - and ended up with something I call: Blob-based Analytical Ambient Occlusion on Primitives Here’s what it does to the final image: (more examples later in the thread) (1/16)
Image from Florisium (@florisium)
Image from Florisium (@florisium)
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Olivier Therrien retweeted
Three.js (@threejs) profile picture
Three.js
@threejs7 Sep 2025
SSGINode: New node for screen-space global illumination github.com/mrdoob/three.js/p…
Image from Three.js (@threejs)
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Olivier Therrien retweeted
Mirko (@Mirko_Salm) profile picture
Mirko@Mirko_Salm28 Jul 2025
Distant light sampling for GT-VBAO with different quality options: shadertoy.com/view/wc2SzR (+ the math: shadertoy.com/view/wcsXDN)
Image from Mirko (@Mirko_Salm)
Image from Mirko (@Mirko_Salm)
Image from Mirko (@Mirko_Salm)
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Olivier Therrien retweeted
Mike Turitzin (@miketuritzin) profile picture
Mike Turitzin@miketuritzin15 Jul 2025
Nice li'l new video covering (some of) the history of SSAO algorithms: youtube.com/watch?v=g4or1fDa…
SSAO, "Close Enough" since 2007 | A Brief History

SSAO, "Close Enough" since 2007 | A Brief History

Github: https://github.com/Zenteon/Patreon: https://www.patreon.co...

youtube.com
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I'm working on a AO and GI for my game. For that reason I'm extending @Mirko_Salm's GT-VBAO (based on @volfaze's work). I've done two things so far: - Sampling a distant light instead of computing AO - Added a heuristic for estimating occluder thickness Details and links below
Image from Björn Ottosson - making Island Architect (@bjornornorn)
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Olivier Therrien retweeted
Mirko (@Mirko_Salm) profile picture
Mirko@Mirko_Salm5 Dec 2024
GT-VBGI: Ground Truth Visibility Bitmask Global Illumination: shadertoy.com/view/lfdBWn. image: GT-VBGI (left) vs. Reference (right). 2. image: the same as the 1., but converged. GT-VBGI matches the results of a brute force ray-marcher.
Image from Mirko (@Mirko_Salm)
Image from Mirko (@Mirko_Salm)
Image from Mirko (@Mirko_Salm)
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Olivier Therrien retweeted
Substrata (@SubstrataVr) profile picture
Substrata
@SubstrataVr2 Dec 2024
Got screen-space global illumination working! (still pretty hacked up)
Image from Substrata (@SubstrataVr)
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Olivier Therrien retweeted
Three.js (@threejs) profile picture
Three.js
@threejs30 Oct 2024
The quest for the best SSAO continues!💪 SSRT3 raw.githack.com/zalo/three.j… GTVBAO raw.githack.com/zalo/three.j… github.com/mrdoob/three.js/i…
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Olivier Therrien retweeted
jendrik illner (@jendrikillner) profile picture
jendrik illner@jendrikillner30 Jul 2024
Graphics Programming weekly - Issue 350 - July 28th, 2024 jendrikillner.com/post/graph…
Image from jendrik illner (@jendrikillner)
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Olivier Therrien retweeted
CDRIN (@CDRINMatane) profile picture
CDRIN@CDRINMatane8 Jan 2024
🚀 Exciting news! Our scientific paper, led by CDRIN researcher-programmer Olivier Therrien (@volfaze) in collabo with Yannick Lévesque (@cegepmatane) and Guillaume Gilet (@USherbrooke), got featured in a @twominutepapers video on #RayTracing! bit.ly/41N6TJz
This Is Ray Tracing Supercharged!

This Is Ray Tracing Supercharged!

❤️ Check out Lambda here and sign up for their GPU Cloud: https://l...

youtube.com
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Coverage Bitmasks for efficient Rendering Algorithms (video and slides) ea.com/seed/news/coverage-bi… Check out the references - lots of interesting work @seed

Coverage Bitmasks for Efficient Rendering Algorithms

This presentation gives the humble old bitmask the attention it deserves. It discusses where they have been used creatively and where they can be used.

ea.com
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Olivier Therrien retweeted
jendrik illner (@jendrikillner) profile picture
jendrik illner@jendrikillner13 Feb 2023
Graphics Programming weekly - Issue 274 - February 12th, 2023 jendrikillner.com/post/graph…
Image from jendrik illner (@jendrikillner)
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Olivier Therrien retweeted
CDRIN (@CDRINMatane) profile picture
CDRIN@CDRINMatane10 Nov 2022
[NOUVEAU] Nous sommes éditeurs sur l'@AssetStore de @unity! Allez voir le SSRT3: Screen Space Ray Tracing (GI), un outil que nous avons déployé pour aider les programmeurs à améliorer les effets visuels de la lumière indirecte dans les scènes 3D. bit.ly/SSRT3_Unity
SSRT3: Screen Space Ray Tracing (GI) | Fullscreen & Camera Effects | Unity Asset Store

SSRT3: Screen Space Ray Tracing (GI) | Fullscreen & Camera Effects | Unity Asset Store

Add depth to your project with SSRT3: Screen Space Ray Tracing (GI) asset from CDRIN. Find this & more VFX options on the Unity Asset Store.

assetstore.unity.com
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Olivier Therrien retweeted
CDRIN (@CDRINMatane) profile picture
CDRIN@CDRINMatane19 Apr 2021
Cette année, l'événement Pinte de science (@pintofscienceCA) revient en force, dans l'Est-du-Québec. 🤯 Réservez les dates suivantes : 18, 19 et 20 mai 2021 Pour la programmation complète : cdrin.com/blog/pinte-de-scie… Illustration : @SebasTibo🤩
Image from CDRIN (@CDRINMatane)
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Olivier Therrien retweeted
CDRIN (@CDRINMatane) profile picture
CDRIN@CDRINMatane9 Mar 2021
L'équipe du CDRIN cherche à s'aggrandir!🤯 Vous pensez être la bonne personne? Vous connaissez LA personne faite pour ce poste? Contactez-nous! 📩 De magnifiques projets, une équipe unique et une expérience de travail hors du commun vous attendent! cdrin.com/blog/poste-de-prog…
Image from CDRIN (@CDRINMatane)
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Olivier Therrien retweeted
CDRIN (@CDRINMatane) profile picture
CDRIN@CDRINMatane5 Nov 2020
[SIGGRAPH 2020] Olivier Therrien aka @volfaze, vous partage son expérience du @siggraph, dans un récent article sur notre blogue. bit.ly/3k1mfmm
Image tirée du jeu Roblox

ALT Image tirée du jeu Roblox

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Olivier Therrien retweeted
CDRIN (@CDRINMatane) profile picture
CDRIN@CDRINMatane6 Aug 2020
[Nomination] Et c'est la deuxième nomination au CDRIN depuis le mois de juillet. 🥳 C’est avec un immense plaisir que nous accueillons Deepti Joshi dans l’équipe CDRIN, en tant que directrice scientifique. #emploi cdrin.com/blog/avis-de-nomin…
Image from CDRIN (@CDRINMatane)
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