Path Tracing and Transient Rendering Engine

This project is a high-performance web-based rendering engine implemented using WebGL 2.0. It features a Physically Based Rendering (PBR) pipeline with support for both standard path tracing and advanced transient rendering, allowing for the visualization of light propagation over time.

Main Dependencies

The core functionality of the project relies on the following libraries:

• Svelte 5 & Vite: Frontend framework and build tool for the user interface and development environment.
• Three.js: Used for utility functions, math operations, and as a foundation for complex geometry loaders (OBJ, GLTF).
• math.gl: High-performance math library for vector and matrix operations.
• GLSL (WebGL 2.0): The core rendering logic is implemented in fragment shaders for GPU-accelerated computing.
• Jimp: Used for image processing and texture preparation on the CPU.

Getting Started

Compilation and Execution

To run the project locally, ensure you have Node.js installed on your system. Follow these steps:

1. Install dependencies:

   npm install

2. Start the development server:

   npm run dev

3. Build for production:

   npm run build

Once the development server is running, the application will be accessible at http://localhost:5173.

Scene Modification

The engine allows for complex scene configurations, including geometry, materials, and lighting. Scene definitions are managed within src/lib/scene.ts.

To modify a scene or create a new one:

1. Define Materials: Use the Material class to specify albedo, roughness, metalness, and emission properties.
2. Add Geometry: Utilize methods like addSphere, addPlane, or addGLTFModel to populate the 3D environment.
3. Configure Lighting: Add point lights via PointLight or create area lights by assigning emissive materials to geometric primitives.
4. Set Initial Parameters: Adjust camera position, FOV, and rendering settings (such as sample count or transient ranges) in the initialParams object.

Credits

Authors

• Víctor Orrios Barón
• José Miguel Quílez Vergara

License

This work is licensed under a Creative Commons Attribution 4.0 International License.

Individual components and libraries integrated into this project remain under their respective original licenses.