Markus Worchel
@mworchel.bsky.social
Computer Graphics PhD student at TU Berlin.
(differentiable) rendering, inverse graphics, GPGPU
mworchel.github.io
(differentiable) rendering, inverse graphics, GPGPU
mworchel.github.io
Reposted by Markus Worchel
Funding: if your mid/large business uses Dear ImGui - and maybe you are approaching end of year budget/planning etc. - please consider reaching out (PM/email) so I can help you help Dear ImGui !
November 5, 2025 at 8:00 PM
Funding: if your mid/large business uses Dear ImGui - and maybe you are approaching end of year budget/planning etc. - please consider reaching out (PM/email) so I can help you help Dear ImGui !
Reposted by Markus Worchel
I gave a talk at Pacific Graphics 2025 on the topic of "Classical Computer Graphics in the Age of Generative AI". I've uploaded the recording to Youtube today.
www.youtube.com/watch?v=Vyci...
www.youtube.com/watch?v=Vyci...
"Classical Computer Graphics in the Age of Generative AI", Pacific Graphics 2025 Keynote, Tzu-Mao Li
YouTube video by Tzu-Mao Li
www.youtube.com
October 30, 2025 at 7:53 PM
I gave a talk at Pacific Graphics 2025 on the topic of "Classical Computer Graphics in the Age of Generative AI". I've uploaded the recording to Youtube today.
www.youtube.com/watch?v=Vyci...
www.youtube.com/watch?v=Vyci...
Reposted by Markus Worchel
Ray marching is a common approach to GPU-accelerated volume rendering, but gives biased transmittance estimates. My new #SIGGRAPHAsia paper (+code) proposes an amazingly simple formula to eliminate this bias almost completely without using more samples.
momentsingraphics.de/SiggraphAsia...
momentsingraphics.de/SiggraphAsia...
October 30, 2025 at 1:24 PM
Ray marching is a common approach to GPU-accelerated volume rendering, but gives biased transmittance estimates. My new #SIGGRAPHAsia paper (+code) proposes an amazingly simple formula to eliminate this bias almost completely without using more samples.
momentsingraphics.de/SiggraphAsia...
momentsingraphics.de/SiggraphAsia...
Reposted by Markus Worchel
Please meet @afectivo.bsky.social . This is a new firm my partner and I are starting in Madrid, Spain. For now we are doing consulting work (in audio and outside of audio), but we have other exciting technology projects and initiatives in the pipeline we hope to be announcing in the coming months.
October 21, 2025 at 7:06 AM
Please meet @afectivo.bsky.social . This is a new firm my partner and I are starting in Madrid, Spain. For now we are doing consulting work (in audio and outside of audio), but we have other exciting technology projects and initiatives in the pipeline we hope to be announcing in the coming months.
Reposted by Markus Worchel
Dr.Jit+Mitsuba just added support for fused neural networks, hash grids, and function freezing to eliminate tracing overheads. This significantly accelerates optimization &realtime workloads and enables custom Instant NGP and neural material/radiosity/path guiding projects. What will you do with it?
August 7, 2025 at 11:15 AM
Dr.Jit+Mitsuba just added support for fused neural networks, hash grids, and function freezing to eliminate tracing overheads. This significantly accelerates optimization &realtime workloads and enables custom Instant NGP and neural material/radiosity/path guiding projects. What will you do with it?
Differentiable rendering has transformed graphics and 3D vision, but what about other fields? Our SIGGRAPH 2025 introduces misuka, the first fully-differentiable path tracer for acoustics.
August 12, 2025 at 7:27 PM
Differentiable rendering has transformed graphics and 3D vision, but what about other fields? Our SIGGRAPH 2025 introduces misuka, the first fully-differentiable path tracer for acoustics.
Reposted by Markus Worchel
Methods like NeRF and Gaussian Splats model the world as radioactive fog, rendered using alpha blending. This produces great results.. but are volumes the only way to get there?🤔 Our new SIGGRAPH'25 paper directly reconstructs surfaces without heuristics or regularizers.
August 7, 2025 at 12:21 PM
Methods like NeRF and Gaussian Splats model the world as radioactive fog, rendered using alpha blending. This produces great results.. but are volumes the only way to get there?🤔 Our new SIGGRAPH'25 paper directly reconstructs surfaces without heuristics or regularizers.
Reposted by Markus Worchel
Physically-based differentiable rendering enables inverse rendering, but handling visibility is hard. Our SIGGRAPH
2025 paper uses quadrics to importance sample silhouette edges--outperforming all existing unidirectional differentiable path tracers.
momentsingraphics.de/Siggraph2025...
2025 paper uses quadrics to importance sample silhouette edges--outperforming all existing unidirectional differentiable path tracers.
momentsingraphics.de/Siggraph2025...
August 3, 2025 at 12:13 PM
Physically-based differentiable rendering enables inverse rendering, but handling visibility is hard. Our SIGGRAPH
2025 paper uses quadrics to importance sample silhouette edges--outperforming all existing unidirectional differentiable path tracers.
momentsingraphics.de/Siggraph2025...
2025 paper uses quadrics to importance sample silhouette edges--outperforming all existing unidirectional differentiable path tracers.
momentsingraphics.de/Siggraph2025...
Reposted by Markus Worchel
EurIPS is coming! 📣 Mark your calendar for Dec. 2-7, 2025 in Copenhagen 📅
EurIPS is a community-organized conference where you can present accepted NeurIPS 2025 papers, endorsed by @neuripsconf.bsky.social and @nordicair.bsky.social and is co-developed by @ellis.eu
eurips.cc
EurIPS is a community-organized conference where you can present accepted NeurIPS 2025 papers, endorsed by @neuripsconf.bsky.social and @nordicair.bsky.social and is co-developed by @ellis.eu
eurips.cc
July 16, 2025 at 10:01 PM
EurIPS is coming! 📣 Mark your calendar for Dec. 2-7, 2025 in Copenhagen 📅
EurIPS is a community-organized conference where you can present accepted NeurIPS 2025 papers, endorsed by @neuripsconf.bsky.social and @nordicair.bsky.social and is co-developed by @ellis.eu
eurips.cc
EurIPS is a community-organized conference where you can present accepted NeurIPS 2025 papers, endorsed by @neuripsconf.bsky.social and @nordicair.bsky.social and is co-developed by @ellis.eu
eurips.cc
Reposted by Markus Worchel
At SIGGRAPH 2025, Intel, Disney, & Chaos are doing a course on the nitty gritty details of implementing path guiding methods in 3 production renderers: Cycles, Hyperion, and Corona. I helped write the course notes: 80 pages of great stuff! Coming soon.
s2025.conference-schedule.org/presentation...
s2025.conference-schedule.org/presentation...
July 7, 2025 at 4:19 AM
At SIGGRAPH 2025, Intel, Disney, & Chaos are doing a course on the nitty gritty details of implementing path guiding methods in 3 production renderers: Cycles, Hyperion, and Corona. I helped write the course notes: 80 pages of great stuff! Coming soon.
s2025.conference-schedule.org/presentation...
s2025.conference-schedule.org/presentation...
If you work on physically-based differentiable rendering, take a look at our EGSR 2025 paper "Radiative Backpropagation with Non-Static Geometry".
TL;DR: Mitsuba 3's prb_reparam and prb_projective integrators are biased when parameters affect geometry, but this unrelated to discontinuities! 1/3
TL;DR: Mitsuba 3's prb_reparam and prb_projective integrators are biased when parameters affect geometry, but this unrelated to discontinuities! 1/3
June 25, 2025 at 8:25 AM
If you work on physically-based differentiable rendering, take a look at our EGSR 2025 paper "Radiative Backpropagation with Non-Static Geometry".
TL;DR: Mitsuba 3's prb_reparam and prb_projective integrators are biased when parameters affect geometry, but this unrelated to discontinuities! 1/3
TL;DR: Mitsuba 3's prb_reparam and prb_projective integrators are biased when parameters affect geometry, but this unrelated to discontinuities! 1/3
Reposted by Markus Worchel
Folks in the #SIGGRAPH community:
You may or may not be aware of the controversy around the next #SIGGRAPHAsia location, summarized here www.cs.toronto.edu/~jacobson/we...
If you're concerned consider signing this letter docs.google.com/document/d/1...
via this form
docs.google.com/forms/d/e/1F...
You may or may not be aware of the controversy around the next #SIGGRAPHAsia location, summarized here www.cs.toronto.edu/~jacobson/we...
If you're concerned consider signing this letter docs.google.com/document/d/1...
via this form
docs.google.com/forms/d/e/1F...
June 20, 2025 at 4:13 PM
Folks in the #SIGGRAPH community:
You may or may not be aware of the controversy around the next #SIGGRAPHAsia location, summarized here www.cs.toronto.edu/~jacobson/we...
If you're concerned consider signing this letter docs.google.com/document/d/1...
via this form
docs.google.com/forms/d/e/1F...
You may or may not be aware of the controversy around the next #SIGGRAPHAsia location, summarized here www.cs.toronto.edu/~jacobson/we...
If you're concerned consider signing this letter docs.google.com/document/d/1...
via this form
docs.google.com/forms/d/e/1F...
Reposted by Markus Worchel
Spherical harmonics are widely used in graphics. Ever wondered how to compute their derivatives? My HPG 2025 poster shows that it is basically free.
It also comes with a code generator for C, C++, Python, GLSL and HLSL to compute SH with derivatives.
momentsingraphics.de/HPGPoster202...
It also comes with a code generator for C, C++, Python, GLSL and HLSL to compute SH with derivatives.
momentsingraphics.de/HPGPoster202...
Derivatives of Spherical Harmonics
momentsingraphics.de
June 15, 2025 at 1:56 PM
Spherical harmonics are widely used in graphics. Ever wondered how to compute their derivatives? My HPG 2025 poster shows that it is basically free.
It also comes with a code generator for C, C++, Python, GLSL and HLSL to compute SH with derivatives.
momentsingraphics.de/HPGPoster202...
It also comes with a code generator for C, C++, Python, GLSL and HLSL to compute SH with derivatives.
momentsingraphics.de/HPGPoster202...
Reposted by Markus Worchel
Rendering nerds! Check out our latest work "Vector-Valued Monte Carlo Integration Using Ratio Control Variates" that has just gotten the best paper award at SIGGRAPH 2025. This paper presents a method that reduces variance of a wide range of rendering and diff. rendering tasks with negligible cost.
June 14, 2025 at 5:26 PM
Rendering nerds! Check out our latest work "Vector-Valued Monte Carlo Integration Using Ratio Control Variates" that has just gotten the best paper award at SIGGRAPH 2025. This paper presents a method that reduces variance of a wide range of rendering and diff. rendering tasks with negligible cost.
Reposted by Markus Worchel
The SIGGRAPH Physically Based Shading course is back this year: blog.selfshadow.com/publications...
SIGGRAPH 2025 Course: Physically Based Shading in Theory and Practice
blog.selfshadow.com
June 10, 2025 at 3:19 PM
The SIGGRAPH Physically Based Shading course is back this year: blog.selfshadow.com/publications...
Reposted by Markus Worchel
Reposted by Markus Worchel
The latest development version of Dr.Jit now provides built-in support for evaluating and training MLPs (including fusing them into rendering workloads). They compile to efficient Tensor Core operations via NVIDIA's Cooperative Vector extension. Details: drjit.readthedocs.io/en/latest/nn...
June 1, 2025 at 2:04 AM
The latest development version of Dr.Jit now provides built-in support for evaluating and training MLPs (including fusing them into rendering workloads). They compile to efficient Tensor Core operations via NVIDIA's Cooperative Vector extension. Details: drjit.readthedocs.io/en/latest/nn...
Reposted by Markus Worchel
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)
June 1, 2025 at 2:12 AM
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
Reposted by Markus Worchel
Importance Sampled FAST Noise
Here's a 25 minute video about the latest and greatest in blue noise textures / precalculated per pixel random numbers
www.youtube.com/watch?v=aFSk...
Also repo: github.com/electronicar...
And published paper: jcgt.org/published/00...
Here's a 25 minute video about the latest and greatest in blue noise textures / precalculated per pixel random numbers
www.youtube.com/watch?v=aFSk...
Also repo: github.com/electronicar...
And published paper: jcgt.org/published/00...
May 27, 2025 at 6:54 PM
Importance Sampled FAST Noise
Here's a 25 minute video about the latest and greatest in blue noise textures / precalculated per pixel random numbers
www.youtube.com/watch?v=aFSk...
Also repo: github.com/electronicar...
And published paper: jcgt.org/published/00...
Here's a 25 minute video about the latest and greatest in blue noise textures / precalculated per pixel random numbers
www.youtube.com/watch?v=aFSk...
Also repo: github.com/electronicar...
And published paper: jcgt.org/published/00...
Reposted by Markus Worchel
Inverse rendering has become a standard tool for 3D reconstruction problems. However, recovering high-frequency appearance textures is challenging. In our SIGGRAPH 2025 paper, we propose several techniques to robustly reconstruct complex appearances (e.g., human skin). 1/n
May 12, 2025 at 4:20 PM
Inverse rendering has become a standard tool for 3D reconstruction problems. However, recovering high-frequency appearance textures is challenging. In our SIGGRAPH 2025 paper, we propose several techniques to robustly reconstruct complex appearances (e.g., human skin). 1/n
Reposted by Markus Worchel
🔷🦀 TetWeave: Isosurface Extraction using On-The-Fly Delaunay Tetrahedral Grids for Gradient-Based Mesh Optimization is accepted to #SIGGRAPH2025 (TOG).
Done in collaboration with @rubenwiersma.nl, Philipp Herholz, and Olga Sorkine-Hornung.
But why a new shape representation? (1/9)
Done in collaboration with @rubenwiersma.nl, Philipp Herholz, and Olga Sorkine-Hornung.
But why a new shape representation? (1/9)
May 8, 2025 at 6:20 AM
🔷🦀 TetWeave: Isosurface Extraction using On-The-Fly Delaunay Tetrahedral Grids for Gradient-Based Mesh Optimization is accepted to #SIGGRAPH2025 (TOG).
Done in collaboration with @rubenwiersma.nl, Philipp Herholz, and Olga Sorkine-Hornung.
But why a new shape representation? (1/9)
Done in collaboration with @rubenwiersma.nl, Philipp Herholz, and Olga Sorkine-Hornung.
But why a new shape representation? (1/9)
Reposted by Markus Worchel
Are you based in the U.S. 🇺🇸 or Canada 🇨🇦 and thinking of doing research in Europe?
ERC grants offer up to €4.5 million to support groundbreaking, investigator-driven frontier research in all fields.
Watch the dedicated info session for researchers in your region👉 youtu.be/92QYink1Lik
#ChooseEurope
ERC grants offer up to €4.5 million to support groundbreaking, investigator-driven frontier research in all fields.
Watch the dedicated info session for researchers in your region👉 youtu.be/92QYink1Lik
#ChooseEurope
May 19, 2025 at 1:23 PM
Are you based in the U.S. 🇺🇸 or Canada 🇨🇦 and thinking of doing research in Europe?
ERC grants offer up to €4.5 million to support groundbreaking, investigator-driven frontier research in all fields.
Watch the dedicated info session for researchers in your region👉 youtu.be/92QYink1Lik
#ChooseEurope
ERC grants offer up to €4.5 million to support groundbreaking, investigator-driven frontier research in all fields.
Watch the dedicated info session for researchers in your region👉 youtu.be/92QYink1Lik
#ChooseEurope
Reposted by Markus Worchel
An update, a bit of retrospection, and a call for you, yes, you, to help JCGT a bit: www.realtimerendering.com/blog/jcgt-is...
JCGT is moving along | Real-Time Rendering
www.realtimerendering.com
May 16, 2025 at 5:34 PM
An update, a bit of retrospection, and a call for you, yes, you, to help JCGT a bit: www.realtimerendering.com/blog/jcgt-is...
Reposted by Markus Worchel
Would you present your next NeurIPS paper in Europe instead of traveling to San Diego (US) if this was an option? Søren Hauberg (DTU) and I would love to hear the answer through this poll: (1/6)
NeurIPS participation in Europe
We seek to understand if there is interest in being able to attend NeurIPS in Europe, i.e. without travelling to San Diego, US. In the following, assume that it is possible to present accepted papers ...
docs.google.com
March 30, 2025 at 6:04 PM
Would you present your next NeurIPS paper in Europe instead of traveling to San Diego (US) if this was an option? Søren Hauberg (DTU) and I would love to hear the answer through this poll: (1/6)
Reposted by Markus Worchel
Le monde reports that on March 9th a French scientist heading for a conference was denied entry to the US. His computer and cellphone were searched, and messages to friends were found where he expressed his opinion on the Trump admin and their politics wrt to science.
www.lemonde.fr/internationa...
www.lemonde.fr/internationa...
March 19, 2025 at 6:35 PM
Le monde reports that on March 9th a French scientist heading for a conference was denied entry to the US. His computer and cellphone were searched, and messages to friends were found where he expressed his opinion on the Trump admin and their politics wrt to science.
www.lemonde.fr/internationa...
www.lemonde.fr/internationa...