The Direct Rendering Manager (DRM) is a kernel framework to manage Graphical Processing Units (GPU). It's a kernel abstractions to GPU drivers and a userspace API designed to support the needs of complex graphics devices. DRM was first implemented on Linux but ported to FreeBSD, NetBSD and Solaris (others?). It's the lower level interface between opengl and the graphics card. With this Go library, theoretically, now it's possible to create a X server or a pure OpenGL library in Go (no bindings).