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• Direct_Rendering_Manager abstract "The Direct Rendering Manager (DRM) is a device-independent kernel-level device driver that provides support for the Direct Rendering Infrastructure. The Direct Rendering Manager can be compiled into the Linux kernel or loaded via the standard module interface. The DRM provides synchronized access to the graphics hardware via the use of an optimized two-tiered lock. The DRM enforces the DRI security policy for access to the graphics hardware by only allowing authenticated X11 clients access to restricted regions of memory. The DRM provides a generic DMA engine, complete with multiple queues and the ability to detect the need for an OpenGL context switch. The DRM is extensible via the use of small device-specific modules that rely extensively on the API exported by the DRM module.It consists of two in-kernel drivers (released as kernel modules on Linux): a generic drm driver, and another which has specific support for the GPUs. This pair of drivers allows a userspace client direct access to the video hardware. The entire DRI system enables hardware accelerated 3D rendering, video decoding as well as GPGPU.Linux kernel version 3.11, which was released on 2013-09-02, included major changes to the direct rendering manager.As of September 2013, freedreno has been adopted into mainline Linux, and will be part of Linux kernel 3.12.In version 3.12 an (experimental) implementation of render nodes were merged into the Direct Rendering Manager.A render node is a character devicethat exposes a GPU'soff-screen rendering and GPGPU capabilitiesto unprivileged programs,without exposing any display manipulation access.This is the first step in of an effort to decouplethe kernel's interfaces forGPUs and display controllersfrom the obsolete notion of a graphics card. Coincidentally, unprivileged off-screen rendering is presumedby both the emerging Wayland and Mir display protocols— only the compositor is entitled to send its output to a display,and rendering on behalf of client programs is outside the scope of these protocols.In Linux kernel 3.13 DRM for freedreno by Rob Clark are expected to be merged. DRM support for Marvell's ARMADA 510 display subsystem.".
• Direct_Rendering_Manager genre Loadable_kernel_module.
• Direct_Rendering_Manager license GNU_General_Public_License.
• Direct_Rendering_Manager wikiPageExternalLink DRM.
• Direct_Rendering_Manager wikiPageExternalLink drm_low_level.html.
• Direct_Rendering_Manager wikiPageExternalLink splitting-drm-and-kms-device-nodes.
• Direct_Rendering_Manager wikiPageID "1471164".
• Direct_Rendering_Manager wikiPageRevisionID "603142199".
• Direct_Rendering_Manager genre Loadable_kernel_module.
• Direct_Rendering_Manager hasPhotoCollection Direct_Rendering_Manager.
• Direct_Rendering_Manager license GNU_General_Public_License.
• Direct_Rendering_Manager name "Direct Rendering Manager".
• Direct_Rendering_Manager title "Direct Rendering Manager".
• Direct_Rendering_Manager subject Category:Linux_kernel_features.
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• Direct_Rendering_Manager type Feature105849789.
• Direct_Rendering_Manager type Idea105833840.
• Direct_Rendering_Manager type LinuxKernelFeatures.
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• Direct_Rendering_Manager type Software106566077.
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• Direct_Rendering_Manager comment "The Direct Rendering Manager (DRM) is a device-independent kernel-level device driver that provides support for the Direct Rendering Infrastructure. The Direct Rendering Manager can be compiled into the Linux kernel or loaded via the standard module interface. The DRM provides synchronized access to the graphics hardware via the use of an optimized two-tiered lock.".
• Direct_Rendering_Manager label "Direct Rendering Manager".
• Direct_Rendering_Manager label "Direct Rendering Manager".
• Direct_Rendering_Manager label "Direct Rendering Manager".
• Direct_Rendering_Manager label "Direct Rendering Manager".
• Direct_Rendering_Manager label "Direct Rendering Manager".
• Direct_Rendering_Manager sameAs Direct_Rendering_Manager.
• Direct_Rendering_Manager sameAs Direct_Rendering_Manager.
• Direct_Rendering_Manager sameAs Direct_Rendering_Manager.
• Direct_Rendering_Manager sameAs Direct_Rendering_Manager.
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• Direct_Rendering_Manager wasDerivedFrom Direct_Rendering_Manager?oldid=603142199.
• Direct_Rendering_Manager homepage DRM.
• Direct_Rendering_Manager isPrimaryTopicOf Direct_Rendering_Manager.
• Direct_Rendering_Manager name "Direct Rendering Manager".