New laptop arrived. Curse of awful laptops broken?

New blog post! Behind the scenes of some of the techniques involved in making our last PC demo 💫 gboisse.github.io/posts/this-i...

I feel like I need to split up my blackboard scribbles/notes for #half-edge into multiple files bc it's quite a lot to deal with an 8000x14000 px document lol

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...

Finished documenting work on optimized wireframe rendering: precision, clipping & math details for stable, performant edges in OpenGL. Includes an analysis of NVIDIA’s wireframe paper & fixes its issues. fauder.github.io/posts/2025/1... #GraphicsProgramming #Rendering #OpenGL #ShaderDev #GameDev

How do ye vote?

Combustion tests with the new ground, 640M active voxels

Spent some time trying to do conservative culling of geometry for distance function evaluation. Turns out I ended up reinventing something like GJK (which I really have no clue about or experience with) with exact bounds.

Fixed a bug and tried beefing up the voxel count: 1.275B active voxels, 3072x3136x1312 bounding box. Realtime capture in the viewport on 4090. The projection struggles a bit on this scale, so I brute forced it a bit, so it's a bit slower than it has to be. FMG to initialize should help a lot here.

Finally adding ground collisions

Extended my topology libs to work on non-Euclidean domains (spherical, toroidal, etc.) by turning mesh edges into geodesics. Below: Bridson's Poisson disk sampling across different domains. #indiedev #gamedev #computergraphics #computationalgeometry #topology

Some progress on the VAT export in #illugen. Complex mesh animations can be imported in game engines ... (made with an internal build) #VFXFriday #realtimevfx #vfx

Some tests I did with hacking in mixbox (github.com/scrtwpns/mix...) support today Left: RGB blending Right: Mixbox blending Interestingly I there's a lot to take from this for smoke scattering, which generally has an absorption component, so subtractive color mixing makes sense I think?

Singly linked lists? Doubly linked lists? On the GPU? I use 27-way linked lists on the GPU, and it's good and highly appropriate!

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Tickets are up! graphicsprogrammingconference.com/tickets/

Frustum Grids Primer Part 2: This time instead of having a fixed depth-slice count (which is common for games for a variety of reasons) we'll instead focus on trying to maintain a uniform and non-elongated froxel shapes, which results a variable slice count www.desmos.com/geometry/yl5...

Working on a small primer on frustum grids. The most common approach is to distribute the depth-slices in an "exponential" manner between a near and far plane, which is probably more appropriately named "geometric" since it relies on a geometric progression. www.desmos.com/geometry/qd1...

I had a student who did my university raytracing course in Odin, now they've sent me an image made by their raytracer and I'm dying

Today I was reminded of a cool fact that at first glance looks decidedly bizarre. Midpoint quadrature — split your interval into n equal subintervals, add up the (smooth!) integrand evaluated at the midpoints and multiply by the width of a subinterval — is of course only second order accurate, 🧵

Random @desmos.com doodle on frustum side-plane inside-out testing: www.desmos.com/geometry/8l6... Uses direct references to objects in the viewport (which are visually disambiguated using colors), and dynamically coloring the test point based on whether it's inside or outside the frustum

Post-Siggraph inspiration: Working out the math of frustum grids is fun

🛫➡️SIGGRAPH today. Nice and quiet in Schiphol

Simple Desmos 3D implementation of ttnghia.github.io/pdf/Quadrati...: www.desmos.com/3d/857tn8jhjl Roughly a 5 years old paper by now, but seems awfully relevant still. By a former student of @cemyuksel.com, who I believe is at Nvidia now.

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I'll be in Vancouver for Siggraph in just about two weeks. Let me know if you want to say hi or meet up. :)

Finally, I'm proud to announce that #Illugen 1.0 is available. If you need to generate assets for special effects, this is the tool for you : Spritesheets, noises, caustics, masks, meshes(including pivot baking) ... and much more to come. jangafx.com/software/ill... #realtimevfx #techart

Crown splash test in #LiquiGen. BBox of the largest splash roughly 448x448x1280 voxels, 88M particles in all cases. Initial droplet 2cm wide, hits the surface at 1, 2 3 and 4 m/s, respectively. Pool of water at bottom a 3.6cm tall cylinder of radius 11.10cm 240 Hz, 5 substeps, voxel size 0.5mm

Look, speaking as a physicist, it is hard for me to put into words how batshit crazy this is.

Spent the last week or so trying to fully understand centripetal Catmull-Rom splines. Reaching the end now. Here's a WIP interactive Desmos link: www.desmos.com/calculator/w...

🧵 Attempting to render a rainbow simply by path tracing millions of rain drops. It's not working well yet... Starting by looking closely at a drop and going through the color spectrum, we can see the diffraction at play: the refracted scene appears to move due to the changing ior.

Hardware virtual textures look like a marvelous tool for large terrains or volume compression. Alas, they are in a sad state in terms of performance and usability. And strangely, the (very bad) binding perfs varies a lot with the driver. → read here: hal.science/hal-05138369 @rcmz0.bsky.social

Notes on atmospheric perspective and distant mountains blog.runevision.com/2025/06/note... On my recent vacation in Japan, I had ample opportunities to study views with distant mountains. And something about the shades at different distances clicked for me that’s now obvious in retrospect.

If you're a coder and you look up to me in any way as a programmer, please know that I cannot respect and in fact have a very poor opinion of people who voluntarily use any kind of cloud based LLM for coding with any kind of regularity

Yet another quadratic Bezier distance function 🧵,slightly cleaner than last time Premise: We want to calculate the distance to a quadratic Bezier curve, with as little effort as possible, ideally without evaluating the full quadratic Bezier curve itself, which involves solving a cubic equation.

Pet peeve that has been peeving me a lot recently: People that make their own simplified and barebones version of a thing (very cool), then publish it (also very cool), then market it using some misleading claims about how it's 10-50x faster than the original thing (very not cool).

Last week I did a research retreat on stroke expansion yielding a cubic Bézier approximation. It went well. I wrote a summary: docs.google.com/document/d/1... That document requires a certain amount of context and background to understand fully, but hopefully some people will find it interesting.

Another 🧵 on (almost) everything (interesting) about evaluating distances and closest points to quadratic Bezier curves

Improvised a marble elevator with some lego technique and regular legos, for a lego duplos marble run we had around.

Looks like the GPC in Breda is happening again 🥳 No info or tickets yet, but I already can't wait! graphicsprogrammingconference.com

Holding SIGGRAPH Asia 2026 in Malaysia is a slap in the face to the rights of LGBTQ+ people. Especially now, when underrepresented people need as much support as we can possibly give them ! Angry like me ? Sign this open letter to let them know. 🏳️‍⚧️🏳️‍🌈 docs.google.com/document/d/1...

Graphics Programming weekly - Issue 395 - June 15th, 2025 www.jendrikillner.com/post/graphic...

What is common knowledge in your field, but shocks outsiders? (GPU) Programming/Simulations: Making something fast isn't necessarily hard, making something fast while also fulfilling various other requirements is hard, e.g. robustness, covers enough features, flexibility, time to implement, etc.

Our #SGP25 work studies a simple and effective way to uniformly sample implicit surfaces by casting rays. (1/9) “Uniform Sampling of Surfaces by Casting Rays” w/ @abhishekmadan.bsky.social @nmwsharp.bsky.social and Alec Jacobson

Sphere surface partitioning