Direct Rendering Manager
Encyclopedia
The Direct Rendering Manager (DRM) is a component of the Direct Rendering Infrastructure
, a system to provide efficient video acceleration (especially 3D rendering) on Unix
-like operating systems, e.g. Linux
, FreeBSD
, NetBSD
, and OpenBSD
.
It consists of two in-kernel drivers (realized as kernel modules
on Linux), a generic drm driver, and another which has specific support for the video hardware. This pair of drivers allows a userspace client direct access to the video hardware.
Direct Rendering Infrastructure
In computing, the Direct Rendering Infrastructure is an interface and a free software implementation used in the X Window System to securely allow user applications to access the video hardware without requiring data to be passed through the X server. Its primary application is to provide...
, a system to provide efficient video acceleration (especially 3D rendering) on Unix
Unix
Unix is a multitasking, multi-user computer operating system originally developed in 1969 by a group of AT&T employees at Bell Labs, including Ken Thompson, Dennis Ritchie, Brian Kernighan, Douglas McIlroy, and Joe Ossanna...
-like operating systems, e.g. Linux
Linux
Linux is a Unix-like computer operating system assembled under the model of free and open source software development and distribution. The defining component of any Linux system is the Linux kernel, an operating system kernel first released October 5, 1991 by Linus Torvalds...
, FreeBSD
FreeBSD
FreeBSD is a free Unix-like operating system descended from AT&T UNIX via BSD UNIX. Although for legal reasons FreeBSD cannot be called “UNIX”, as the direct descendant of BSD UNIX , FreeBSD’s internals and system APIs are UNIX-compliant...
, NetBSD
NetBSD
NetBSD is a freely available open source version of the Berkeley Software Distribution Unix operating system. It was the second open source BSD descendant to be formally released, after 386BSD, and continues to be actively developed. The NetBSD project is primarily focused on high quality design,...
, and OpenBSD
OpenBSD
OpenBSD is a Unix-like computer operating system descended from Berkeley Software Distribution , a Unix derivative developed at the University of California, Berkeley. It was forked from NetBSD by project leader Theo de Raadt in late 1995...
.
It consists of two in-kernel drivers (realized as kernel modules
Loadable Kernel Module
In computing, a loadable kernel module is an object file that contains code to extend the running kernel, or so-called base kernel, of an operating system...
on Linux), a generic drm driver, and another which has specific support for the video hardware. This pair of drivers allows a userspace client direct access to the video hardware.