direct3d

RenderDoc is a stand-alone graphics debugging tool.

Stride (formerly Xenko), a free and open-source cross-platform C# game engine.

Farbrausch demo tools 2001-2011

Tools for tracing OpenGL, Direct3D, and other graphics APIs

A low-level, portable graphics library for .NET.

DirectXTex texture processing library

⚡ 可编程渲染管线实现，帮助初学者学习渲染

.NET bindings for Direct3D12, Direct3D11, WIC, Direct2D1, XInput, XAudio, X3DAudio, DXC, Direct3D9 and DirectInput.

Zep - An embeddable editor, with optional support for using vim keystrokes.

C++ game engine for Windows, macOS, Linux, iOS, tvOS, Android, and web browsers

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

A Direct3D9 to Vulkan layer using the DXVK backend. [Upstreamed to DXVK]

Game development samples published by the Xbox Advanced Technology Group using the Xbox One XDK and for the Universal Windows Platform (UWP).

A modern cross-platform low-level graphics API

Immediate-mode, renderer agnostic, lightweight debug drawing API.

Proof-of-concept library for generating HLSL, GLSL, and Metal shader code from C#,

Graphics API wrapper is written in C++ on top of DirectX 12, Vulkan and Metal. Provides main features including ray tracing.

D3D9/11 but it runs natively on Linux!

FNA3D - 3D Graphics Library for FNA

Game development samples published by the Xbox Advanced Technology Group using the Microsoft GDK.