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

Vulkan-based implementation of D3D8, 9, 10 and 11 for Linux / Wine

RenderDoc is a stand-alone graphics debugging tool.

A generic post-processing injector for games and video software.

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

Single C file, Realtime CPU/GPU Profiler with Remote Web Viewer

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! ;)

Tools for tracing OpenGL, Direct3D, and other graphics APIs

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

KlayGE is a cross-platform open source game engine with plugin-based architecture.

ShaderConductor is a tool designed for cross-compiling HLSL to other shading languages

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

Universal graphical hook for a D3D9-D3D12, OpenGL and Vulkan based games.

Glide/DirectX implementation on D3D11/12

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

Lightweight, multi-platform, data-oriented game engine.

A modern cross-platform low-level graphics API

Official mirror of libplacebo

A Python high-performance screen capture library for Windows using Desktop Duplication API

OGSR Project - Evolution of X-Ray Engine for S.T.A.L.K.E.R.: Shadow of Chernobyl