I've made a Monte-Carlo raytracer for glTF scenes in WebGPU
This is a GPU "software" raytracer (i.e. using manual ray-scene intersections and not RTX) written using the WebGPU API that renders glTF scenes. It supports many materials, textures, material & normal mapping, and heavily relies on multiple importance sampling to speed up convergence.
I've made a Monte-Carlo raytracer for glTF scenes in WebGPU launched on December 26, 2024 with 131 votes, #327 of 5,365 launches that month and more than 95% of that year's launches. The site was still online in September 2026, 1 year on.
In plain words
This is a GPU-based Monte-Carlo raytracer built with WebGPU that renders glTF 3D scenes in a web browser. It performs manual ray-scene intersections without requiring RTX hardware, supporting multiple material types, textures, normal mapping, and material mapping. The raytracer uses multiple importance sampling techniques to accelerate image convergence. It's designed for developers working with 3D graphics and WebGPU rendering pipelines.
written from the facts on this page · September 2026
From the sources
A software raytracing engine written in WebGPU. Contribute to lisyarus/webgpu-raytracer development by creating an account on GitHub.
This is a GPU "software" raytracer (i.e. using manual ray-scene intersections and not RTX) written using the WebGPU API. It expects a single glTF scene as input. It supports flat-colored and textured materials with albedo, normal, and material maps. It doesn't support refraction (yet). Note that if the input model has UVs, they should be non-degenerate, as they are used to reconstruct tangents used for normal mapping (even if the model doesn't have a normal map). There are a bunch of test scenes in the test_scenes directory. It uses wgpu-native WebGPU implementation, and SDL2 to create a window to render to. This project is licensed under the terms of the MIT license. To run the program,…from github.com
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