gkjohnson/three-gpu-pathtracer

gkjohnson/three-gpu-pathtracer has 2,033 GitHub stars and 200 forks. GitHot measured 0 stars in 24 hours, +72 in 7 days, and +110 in 15 days. Last checked 2026-11-08 09:43 UTC. Last push 2026-11-04.

How these counts are measured

Path tracing renderer and utilities for three.js built on top of three-mesh-bvh.

2,033 stars 200 forks

Measured star growth

in 24h: 0
in 7 days: +72
in 15 days: +110
in 1 month: Collecting history

Net star changes over overlapping periods, not daily totals. Missing measurements are left blank. Stars measure attention, not software quality.

README.md

Original

three-gpu-pathtracer

Path tracing project using three-mesh-bvh and WebGPU compute shaders to accelerate high quality, physically based rendering on the GPU.

Examples

Setup

Basic glTF Setup Example

Basic Primitive Geometry Example

Beauty Demos

Physically Based Materials

Interior Scene w/ Equirect Rendering

Features

Denoising and Upscaling

Test Scenes

Material Test Orb

Model Viewer Fidelity Scene Comparisons

Tools

Animation Rendering

Running examples locally

To run and modify the examples locally, make sure you have Node and NPM installed. Check the supported versions in the test configuration.

To install dependencies, run npm install
To start the demos run npm start
Visit http://localhost:5173/<demo-name.html>

Use

Basic Renderer

import * as THREE from 'three/webgpu';
import { WebGPUPathTracer } from 'three-gpu-pathtracer/webgpu';

// init scene, camera, controls, etc

renderer = new THREE.WebGPURenderer();
renderer.toneMapping = THREE.ACESFilmicToneMapping;
await renderer.init();

pathTracer = new WebGPUPathTracer( renderer );
pathTracer.setScene( scene, camera );

animate();

function animate() {

	requestAnimationFrame( animate );
	pathTracer.renderSample();

}

Blurred Environment Map

Using a pre blurred environment map can help improve frame convergence time at the cost of sharp environment reflections. If performance is a concern then multiple importance sampling can be disabled and a blurred environment map used.

import { BlurredEnvMapGenerator } from 'three-gpu-pathtracer/webgpu';

// ...

const envMap = await new HDRLoader().loadAsync( envMapUrl );
const generator = new BlurredEnvMapGenerator( renderer );
const blurredEnvMap = await generator.generate( envMap, 0.35 );
generator.dispose();

scene.environment = blurredEnvMap;

// render!