Cross-platform, graphics API agnostic, "Bring Your Own Engine/Framework" style rendering library.

RenderDoc is a stand-alone graphics debugging tool.

The Forge Cross-Platform Framework PC Windows, Steamdeck (native), Ray Tracing, macOS / iOS, Android, XBOX, PS4, PS5, Switch, Quest 2

scene-oriented, flexible 3D engine (C++, Python, C#, Java)

Overlay for running GPU shaders on top of Windows desktop

Improved version of the X-Ray Engine, the game engine used in the world-famous S.T.A.L.K.E.R. game series by GSC Game World. Join OpenXRay! ;)

The DirectX Tool Kit (aka DirectXTK) is a collection of helper classes for writing DirectX 11.x code in C++

Low Level Graphics Library (LLGL) is a thin abstraction layer for the modern graphics APIs OpenGL, Direct3D, Vulkan, and Metal

DirectXTex texture processing library

Modern C++14 library for the development of real-time graphical applications

DirectXMath is an all inline SIMD C++ linear algebra library for use in games and graphics apps

Highly optimized open source ambient lighting implementation based on modern digital video and audio stream analysis for Windows, macOS and Linux (x86 and Raspberry Pi / ARM).

The DirectX Tool Kit (aka DirectXTK12) is a collection of helper classes for writing DirectX 12 code in C++

Live shader coding tool and Shader Showdown workhorse

Glide/DirectX implementation on D3D11/12

C++ 3D Game Tutorial Series (DirectX) - Learn to code a DirectX 3D Game in C++ from scratch

DirectX9 to DirectX12 API proxy for Guild Wars 2

High-Performance Rendering Framework on Stream Architectures

Easy to integrate memory allocation library for Direct3D 12