Grenzwert

Hey everyone 👋
I'm Mikhail, a graphics programmer. A few months ago I decided to rewrite my old D3D11 volume rendering demo from scratch this time on top of Diligent Engine. I actually contributed to the WebGPU backend of that engine a couple of years back, so it was a natural choice plus I really wanted the project to be cross-platform from day one.

Right now Grenzwert runs on Windows, Linux, macOS, and the Web. You can try the Live demo instantly with no sign-up and no installation required. One caveat though: WebGPU support is still maturing, so Chrome is your best bet for now; other browsers aren't quite there yet.

Under the hood it uses unbiased delta tracking with physically-based lighting – the same class of algorithms used in offline movie renderers, but running in real time in your browser.

What's next there's a lot I want to build:

• DICOM upload – load your own medical scans directly in the browser

• MRI rendering – extend support beyond CT to MR modalities

• Slice Viewer – classic 2D cross-sections with windowing and leveling controls

• Noise-free rendering mode – a faster approximation path that trades minimal quality for a clean, stable image

• Iso-surface rendering – extract and display surfaces at specific density thresholds

If you're into medical imaging or real-time graphics I'd really appreciate your feedback. Which of these features matters most to you?