Volumetric Path Tracer

VPT is a volumetric path tracer to render openvdb files on gpu using Cuda. It uses the Ray Tracing Gems Vol 28. as the base, and implements volume rendering algorithms from PBRT. Features of VPT is listed below

• Ability to render Open VDB files with thousands of ray depths on gpu
• Realistic lighting with a procedural atmosphere and sun system
• HDRI maps for environmental lighting
• Point lights
• Eric Bruneton style sky implementation
• Depth of field
• Volume emission
• Ability to render planetary atmospheres
• Instanced rendering of vdb files with custom file format (.ins)
• BVH and Octree structures for fast ray traversal
• Custom instance file writer plugin for Houdini written in HDK

This repo is currently built and tested only under Windows.

Release Notes

v 1.0.2 Alpha

Please see the releases section for release notes.

Installation, Build and Usage

Use the build_windows.cmd file for building automatically on windows. Also see this detailed article for using VPT. This repo is tested with Cuda 12.1 and Nvidia Driver 546.65

Author

• Sergen Eren - My website

Status

✔️ This project is under active maintenance and development

License

This project is licensed under BSD 3-Clause License

Acknowledgments

• PBRT - Big thanks to Matt Pharr, Wenzel Jakob and Greg Humphreys
• GVDB - Nvidia Sparse Voxel Database
• Ray Tracing Gems - Base of VPT
• Walt Disney Animation Studios - Moana Cloud Dataset