GDI, OpenGL and Direct3D 9 re-implementation of the DirectDraw API for classic games for better compatibility with Windows 2000, XP, Vista, 7, 8, 10, 11, Wine (Linux/macOS) and Virtual Machines [Moved to: https://github.com/FunkyFr3sh/cnc-ddraw]
Why do you think that https://github.com/libretro/glsl-shaders is a good alternative to cnc-ddraw