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

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

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

Physical based rendering with Vulkan using glTF 2.0 models

App of RTR, PTR and Editor

An implementation of physically based shading & image based lighting in D3D11, D3D12, Vulkan, and OpenGL 4.

Vulkan, OptiX and CUDA Interoperation Modular Rendering Library and Framework for PC/Linux/Android

HARFANG 3D source code public repository

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.

Realtime 3D Game-Engine with a focus on space sim. Written in C++ 14

A fast C++23 3D game engine for modern devices, with wide platform support

Rendering Engine using C++ and OpenGL

Realtime 3D rendering engine

Vulkan Real-time Path Tracer Engine

Ray tracing glTF scene with Vulkan

DirectX 11 Renderer written in C++11

Modern OpenGL renderer written in C++17

OpenGL C++ Graphics Engine

Cross platform toy render engine supporting physically based rendering and hardware/software ray tracing

Realtime GPU Path tracer based on OpenCL and OpenGL