# Pjbomb2/TrueTrace-Unity-Pathtracer

A High Performance Compute Shader Based Mesh Pathtracer in Unity3d without RT Cores

Repository: https://github.com/Pjbomb2/TrueTrace-Unity-Pathtracer
Canonical: https://ross.abutalabs.com/products/truetrace-unity-pathtracer
Language: C#
License: MIT
License Family: permissive
Topics: compute-shader, hlsl, cwbvh, path-tracing, bvh, unity3d, refit, unity, nee, raytracing, restir-gi, disney-bsdf, realtime, denoising, global-illumination, gpu, rtx, oidn, panorama, bindless
Last push: 2026-08-21T19:06:51+00:00

## Health v2 (maintenance only)
Score: 81/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 98, release rhythm 49, longevity 100
- inputs: {"age_days": 1655, "days_push": 12, "days_rel": 262, "gap_med": 32.0, "n_releases_24m": 13}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1011, forks 64 (observed 2026-08-28T04:03:13.171708+00:00)

## What it is
A high-performance compute shader based path tracer for Unity3D that works without RT cores, using compressed wide BVH for software ray tracing. It provides interactive/realtime path tracing with Disney BSDF materials, ReSTIR GI, denoising, and supports Built-in, HDRP, and URP pipelines.

## Use cases
- add realtime path tracing to a unity game
- render global illumination without an RTX gpu
- generate panoramas with path tracing in unity
- render offline caustics with photon mapping
- test path tracing on integrated graphics
- add ray traced lighting to HDRP or URP project

## When to choose
- you want path tracing in Unity on any GPU vendor including integrated graphics
- you need interactive global illumination with runtime object and material changes
- you want both realtime (ASVGF) and offline (OIDN) denoising options

## When to avoid
- you need a production-ready, officially supported renderer for a shipped commercial title
- you are not using Unity3D
- you need full multiscatter fog or caustics in realtime

## Facets
- artifact type: library
- maturity: active
- function: graphics, simulation, image-processing, gpu-computing
- domain: graphics, simulation
- platform: game-engine, windows, cross-platform
- tags: path-tracing, compute-shader, ray-tracing, global-illumination, bvh, cwbvh, restir-gi, denoising, disney-bsdf, realtime-rendering, unity3d, hlsl, no-rt-cores, game-development, gpu

## Member repositories
- Pjbomb2/TrueTrace-Unity-Pathtracer (main) score 81

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:03:13.171708+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T07:11:48.931802+00:00, confidence not recorded.
  - readme: https://github.com/Pjbomb2/TrueTrace-Unity-Pathtracer (fetched 2026-08-28T04:03:13.171708+00:00, sha c033d3a31659)
- Data as of 2026-08-30T08:39:29.467469+00:00.