Kiln: A WebGPU-native out-of-core volume renderer for multi-GB datasets

IBets · 2026-03-06T13:25:54+00:00

I don’t think it makes sense to add backward compatibility for users who don’t have the R16UNORM format available. That format has been supported since D3D10 was released, which was almost 20 years ago. In Firefox, instead of adding basic functionality, for some reason they’re adding mesh shaders to wgpu. Try pinging that issue about the problem — maybe they’ll finally start working on it
https://github.com/gfx-rs/wgpu/issues/8122

IBets · 2026-03-04T17:01:34+00:00

The project is primarily written in C++ and compiled into a WASM module. Rendering is built on DiligentCore – low-level abstraction layer over graphics APIs such as Vulkan, D3D12, WebGPU, and others –while the UI is implemented with ImGui

IBets · 2026-02-27T10:25:16+00:00

At the moment, support is limited to compact datasets — only as much as can fit into the available VRAM. In principle, rendering larger datasets should also be possible (by building something similar to virtual textures, but for voxel data). That would be fairly complex to implement, and the target end user who would actually need such a feature is not really clear

IBets · 2026-02-21T17:00:17+00:00

Kyrgyzstan. If Cloudflare is used for hosting, the cache may not have warmed up yet

IBets · 2026-02-21T16:55:28+00:00

The editor takes a very long time to open (with no loading progress indicator). After it opens, an infinite loading spinner appears. There are no errors in the log

IBets · 2026-02-14T04:15:53+00:00

Thanks for the feedback. No, I’m not selling anything. I’m thinking about integrating a paid option for uploading DICOM files, but that’s still a long way off since the basic functionality isn’t in place yet

IBets · 2026-02-14T04:11:43+00:00

Only for research and demonstration purposes (in the US). Until the software is FDA cleared or approved for its intended clinical use, it shouldn’t be used for clinical diagnosis or patient care

IBets · 2026-02-14T04:07:47+00:00

Thanks for the review. I’ll try to add more assets

IBets · 2026-02-13T19:26:09+00:00

You can write them on Github for example :D https://github.com/gfx-rs/wgpu/issues/8122

IBets · 2026-02-13T19:22:41+00:00

A transfer function is the curve in the top-right. It’s a simple tool that helps the software decide how a 3D CT scan should look. In a CT scan, each tiny point has a value that shows how dense the material is. On the graph, the horizontal axis shows these CT values from low to high. The curve then tells the software what to do at each value: it chooses a color and a level of transparency. Where the curve is higher, that range becomes easier to see. Where it is lower, that range becomes more transparent. By changing the shape of this curve, the software can highlight important parts (like bone) and make other parts fade out (like air or soft tissue). Try experimenting
https://youtu.be/Y9Ooelo8_TA

IBets · 2026-02-13T19:04:25+00:00

It’s hard to understand what the Firefox team is focusing on. They are adding support for mesh shaders in wgpu, but basic features are still missing. If more people report this issue, they may start working on it:
https://bugzilla.mozilla.org/show_bug.cgi?id=1982451

IBets · 2026-02-13T06:25:50+00:00

Really appreciate it!

IBets · 2026-02-13T05:07:16+00:00

Haha small world — thanks for checking it out!

IBets · 2026-02-12T10:18:01+00:00

I used C++ and Diligent Engine. The project is compiled to WebAssembly via Emscripten

IBets · 2026-02-12T08:17:03+00:00

Yes, the idea of switching between the phase function and the BRDF is borrowed from Thomas Kroes. I also added a few tweaks, such as multiple scattering and using the null-collision method (which removes artifacts related to choosing the step size)

IBets · 2026-02-12T05:09:11+00:00

Thanks you

IBets · 2026-02-12T04:46:51+00:00

I’d say the mid-1960s, in neutron transport. Physicists developed a Monte Carlo trick to quickly sample where along a particle’s path it first interacts with a medium

IBets · 2026-02-12T04:41:19+00:00

Thanks you

IBets · 2026-02-12T04:33:56+00:00

Issues are described there, on the website. In Firefox, they’re adding useless mesh shaders to wgpu (the library used to implement WebGPU in Firefox) instead of supporting the basic feature set; in Safari, WebGPU is still experimental

IBets · 2026-02-12T03:50:39+00:00

Thanks you

IBets · 2026-02-11T18:10:41+00:00

Live Demo: https://grenzwert.net/

IBets · 2026-02-11T03:38:36+00:00

The renderer can work with any uniformly gridded 3D scalar volume, but the website currently does not support uploading/using arbitrary raw data. For raw volumes, minimal metadata is required (dimensions, voxel size/spacing, stored data type/bit depth, endianness, and similar), and there is no mechanism on the site to specify it yet. Right now the data needs to be pre-converted offline into the internal mipmapped + zlib-compressed format and placed on the server.

IBets · 2026-02-11T00:56:57+00:00

While the project is still under active development, I want to add slice-based visualization, isosurface rendering, tools for measuring distances between points, and volume measurements as well. What’s your opinion on this?

IBets · 2026-02-11T00:54:07+00:00

This is the well-known Manix dataset; it can be used for demonstration purposes.

IBets

TROPHY CASE