Editing Direct Rendering Manager (section)

{{Short description|Subsystem of the Linux kernel}}
{{Distinguish|digital rights management}}
{{Infobox software
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| author                 = [[kernel.org]] & [[freedesktop.org]]
| developer              = [[kernel.org]] & [[freedesktop.org]]
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| programming language   = [[C (programming language)|C]]
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| genre                  = {{unbulleted list|[[Device driver]]|[[Loadable kernel module]]}}
| license                = {{unbulleted list|[[MIT License]]{{citation needed|date=July 2014}}|[[GNU General Public License|GPL]]{{citation needed|date=July 2014}}}}
| website                = {{URL|http://dri.freedesktop.org/wiki/DRM}}
}}

The '''Direct Rendering Manager''' ('''DRM''') is a subsystem of the [[Linux kernel]] responsible for interfacing with [[Graphics processing unit|GPUs]] of modern [[video cards]]. DRM exposes an [[Application programming interface|API]] that [[user-space]] programs can use to send commands and data to the GPU and perform operations such as configuring the [[mode setting]] of the display. DRM was first developed as the [[kernel-space]] component of the [[X.Org Server|X Server]] [[Direct Rendering Infrastructure]],{{r|DRM readme}} but since then it has been used by other graphic stack alternatives such as [[Wayland (display server protocol)|Wayland]] and standalone applications and libraries such as [[Simple DirectMedia Layer | SDL2]] and [[Kodi (software) | Kodi]].

User-space programs can use the DRM API to command the GPU to do [[hardware acceleration|hardware-accelerated]] [[3D rendering]] and [[video decoding]], as well as [[General-purpose computing on graphics processing units|GPGPU computing]].