Top 23 Pbr Open-Source Projects

• filament

  27 17,112 9.8 C++

  Filament is a real-time physically based rendering engine for Android, iOS, Windows, Linux, macOS, and WebGL2

  

Project mention: Filament – A Language for Fearless Hardware Design | news.ycombinator.com | 2024-03-04

Also: Filament is a real-time physically-based renderer written in C++. It is mobile-first, but also multi-platform.

https://google.github.io/filament/

• WickedEngine

  9 5,366 9.5 C++

  3D engine with modern graphics

Project mention: List of Unity alternatives | /r/gamedev | 2023-09-19

• InfluxDB

  www.influxdata.com featured

  Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.

  

• DiligentEngine

  25 3,317 9.4 Batchfile

  A modern cross-platform low-level graphics library and rendering framework

  

Project mention: DiligentGraphics: Open-source cross-platform rendering middleware | news.ycombinator.com | 2024-04-29

• frr

  21 3,018 10.0 C

  The FRRouting Protocol Suite

  

• ray-mmd

  4 1,629 0.0 HLSL

  🎨 The project is designed to create a physically-based rendering at mikumikudance.

• RBDOOM-3-BFG

  15 1,364 9.2 C++

  Doom 3 BFG Edition source port with updated DX12 / Vulkan renderer and modern game engine features

Project mention: 1+ Years of Unemployment Lately, What To Do Next? | /r/cscareerquestions | 2023-12-07

• SoftGLRender

  1 927 5.7 C++

  Tiny C++ Software Renderer / Rasterizer, and implements OpenGL and Vulkan renderers for comparison

• SaaSHub

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• Vulkan-glTF-PBR

  5 868 5.3 C++

  Physical based rendering with Vulkan using glTF 2.0 models

• StratusGFX

  12 608 8.9 C++

  Realtime 3D rendering engine

Project mention: Show HN: Realtime Global Illumination on Older Hardware [video] | news.ycombinator.com | 2023-07-24

Hi everyone,

A few months ago I posted here on HN about my open source 3D rendering engine. Since then I've been working on the new version which implements additional modern graphics techniques while still running on older GTX 10 series hardware.

This includes emission mapping, FXAA+TAA, better mesh LOD generation and selection, but the biggest one was an overhaul of the global illumination system.

The global illumination overhaul was the biggest aspect of the new release. The goal was better visuals than the previous version while maintaining equal performance. I wanted to outline how it works and what I had to do to make it work.

= How It Works =

* Direct lighting: Handled using standard rasterization pipeline with cascaded shadow mapping

* 2nd bounce of light: Approximated by a set of virtual point lights

* 3rd bounce of light: Not directly simulated but shadows are tapered to prevent harsh cutoff. VPLs can also be placed in open spaces to help spread light where it wouldn't be able to go without a true 3rd bounce.

* Adaptive sampling: maximum of 4200 virtual lights per frame are selected. Each pixel computes lighting using between 1 and 10 random samples based on object's distance to camera and whether or not the lighting history was recently discarded for that pixel (recently discarded = temporarily sample more heavily).

* Spatial resampling: each pixel can look at a few of its neighbors each frame. If the neighbor is a good fit it will merge that neighbor's samples into its own to increase the effective sample count.

* Denoise and temporal accumulation: 2 level wavelet denoiser combined with temporal accumulation to get rid of most noise and stabilize the image even when in motion.

= Maintaining Performance =

There are a few key ways that this version is able to both look better yet have the same performance as the previous version on the same hardware.

1) Reuse as much data as possible between frames. This is where the temporal accumulation aspect comes into play.

2) VPLs are updated slowly over many frames to prevent any single frame from halting the system.

3) With thousands of VPLs per frame, they can't all be factored in for each pixel. It's too much work. The approach was to instead sample from the set of VPLs randomly, reuse as much data spatially as possible, denoise the result and temporally accumulate 1 second worth of frames.

I'm very happy with the results! Roughly the same performance as the previous version but better visuals.

GitHub (open sourced under the MPL-2.0 license): https://github.com/KTStephano/StratusGFX

Image Showreel: https://ktstephano.github.io/portfolio

High-Level Tech Breakdown: https://ktstephano.github.io/rendering/stratusgfx/frame_anal...

• pb

  0 579 2.0 Rust

  Console progress bar for Rust (by a8m)

• gltf

  1 503 7.1 Rust

  A crate for loading glTF 2.0 (by gltf-rs)

  

• harfang3d

  13 470 4.3 C++

  HARFANG 3D source code public repository

  

Project mention: 3D Engine in Python: New update on Harfang 3D | /r/Python | 2023-08-23

👉 Last release - Github

• Yave

  3 464 9.5 C++

  Yet Another Vulkan Engine

Project mention: Abstraction arround CommandBuffers and Queues | /r/vulkan | 2023-12-11

Yes

• Cluster

  1 395 2.6 C++

  Clustered shading implementation with bgfx (by pezcode)

• Vanilla-RTX

  19 301 7.6

  Vanilla RTX GitHub Repository, A PBR Resource Pack for Minecraft Bedrock Edition: Vanilla Resources Made Available for Minecraft RTX

Project mention: Just got a new pc that can run RTX on minecraft windows. Here's everything this RTX pack can do. (you can get the pack with the link below every image) | /r/Minecraft | 2023-06-27

• RayTracing

  1 297 4.2 C++

  Realtime GPU Path tracer based on OpenCL and OpenGL (by AlexanderVeselov)

• Daemon

  0 292 9.4 C++

  The Dæmon game engine. With some bits of ioq3 and XreaL. (by DaemonEngine)

  

• jeelizGlassesVTOWidget

  1 258 6.8 JavaScript

  JavaScript/WebGL glasses virtual try-on widget. Real-time camera experience, robust to all lighting conditions, high-end 3D PBR rendering, easy integration, fully customizable.

  

• limitless-engine

  4 237 9.1 C++

  OpenGL C++ Graphics Engine

• dogfight-sandbox-hg2

  1 130 2.7 Python

  Air to air combat sandbox, created in Python 3 using the HARFANG 3D 2 framework.

  

• source-pbr

  2 116 3.2 C++

  Source Engine Physically Based Rendering implementation

• redcube

  4 95 3.2 TypeScript

  JS renderer based on GLTF to WebGPU or WebGL backends.

• RayTracingPBR

  3 91 3.8 Python

  A very simple PBR Path Tracing Renderer.

• SaaSHub

  www.saashub.com featured

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• 1+ Years of Unemployment Lately, What To Do Next?

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• DX12/Vulkan Doom 3 port with Blender maps

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• Just got a new pc that can run RTX on minecraft windows. Here's everything this RTX pack can do. (you can get the pack with the link below every image)

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• What was the highlight of your education as a CS major?

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• A note from our sponsor - SaaSHub
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