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Top 20 C++ Pbr Projects
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filament
Filament is a real-time physically based rendering engine for Android, iOS, Windows, Linux, macOS, and WebGL2 (by google)
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Stream
Stream - Scalable APIs for Chat, Feeds, Moderation, & Video. Stream helps developers build engaging apps that scale to millions with performant and flexible Chat, Feeds, Moderation, and Video APIs and SDKs powered by a global edge network and enterprise-grade infrastructure.
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RBDOOM-3-BFG
Doom 3 BFG Edition source port with updated DX12 / Vulkan renderer and modern game engine features
Project mention: Advances in Real-Time Rendering in Games, Siggraph 2025 | news.ycombinator.com | 2025-08-28A lot of the id tech 8 global illumination techniques described in that presentation were already implemented by Robert Beckebans in his Doom 3 fork: https://github.com/RobertBeckebans/RBDOOM-3-BFG
It is one of the few engines out there that implement NVRHI properly. It is pretty exciting to see the evolution of the project.
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SoftGLRender
Tiny C++ Software Renderer / Rasterizer, and implements OpenGL and Vulkan renderers for comparison
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InfluxDB
InfluxDB – Built for High-Performance Time Series Workloads. InfluxDB 3 OSS is now GA. Transform, enrich, and act on time series data directly in the database. Automate critical tasks and eliminate the need to move data externally. Download now.
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Daemon
The Dæmon game engine. 20 years of development above id Tech 3. Historically based on id Tech 3 through ioq3, Wolf:ET and XreaL a very long time ago. (by DaemonEngine)
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Physically-based-deferred-shading
First attempt at writing a good looking 3D renderer. Written in C++ using OpenGL on Ubuntu.
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SaaSHub
SaaSHub - Software Alternatives and Reviews. SaaSHub helps you find the best software and product alternatives
NOTE: The open source projects on this list are ordered by number of github stars. The number of mentions indicates repo mentiontions in the last 12 Months or since we started tracking (Dec 2020).
C++ Pbr discussion
C++ Pbr related posts
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Advances in Real-Time Rendering in Games, Siggraph 2025
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Rbdoom-3-BFG: Doom 3 port using Nvidia's NVRHI
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Rbdoom-3-BFG 1.6.0: Retro Revolution and Modding Mastery
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Doom 3 running on DX12 and Vulkan through NVRHI with, revamp with PBR, GI, IBL
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Show HN: 3D rendering toolkit for Flutter and/or Dart
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Filament – A Language for Fearless Hardware Design
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DX12/Vulkan Doom 3 port with Blender maps
- A note from our sponsor - Stream getstream.io | 22 Dec 2025
Index
What are some of the best open-source Pbr projects in C++? This list will help you:
| # | Project | Stars |
|---|---|---|
| 1 | filament | 19,227 |
| 2 | RBDOOM-3-BFG | 1,719 |
| 3 | Vulkan-glTF-PBR | 1,133 |
| 4 | SoftGLRender | 1,108 |
| 5 | StratusGFX | 786 |
| 6 | harfang3d | 633 |
| 7 | limitless-engine | 560 |
| 8 | Yave | 495 |
| 9 | Cluster | 463 |
| 10 | Daemon | 345 |
| 11 | RayTracing | 340 |
| 12 | source-pbr | 134 |
| 13 | quarkGL | 119 |
| 14 | vulkan-renderer | 28 |
| 15 | muon | 22 |
| 16 | CubiCAD | 18 |
| 17 | Physically-based-deferred-shading | 12 |
| 18 | Hemlock-Renderer-Opengl-3D-PBR-Renderer | 10 |
| 19 | Cinder | 8 |
| 20 | redcube-mtl | 5 |
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