Godot Engine – Multi-platform 2D and 3D game engine

Compatibility tool for Steam Play based on Wine and additional components

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

Compatibility tool for Steam Play based on Wine and additional components

The code base of supertuxkart

C++ Insights - See your source code with the eyes of a compiler

SteamOS session compositing window manager

Researching Wii U emulation.

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

A d3d9 and d3d10 to d3d11 translation layer.

DXIL conversion to SPIR-V for D3D12 translation libraries

Core OpenGL over Vulkan

D3D9 wrapper library using Microsoft's D3D9On12 implementation

Experimental implementation of AGS D3D11 extensions for DXVK

Open-source GameMaker:Studio runner

A game engine written in C++ using OpenGL 3.3 as a graphics framework

(version<0.70) Hacks and patches to build DXVK with native linux compiler (GCC, clang ...)