2000-08-08 10:04:21 -06:00
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************************************************************
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* For the very latest on DRI development, please see: *
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2007-02-12 13:45:51 -07:00
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* http://dri.freedesktop.org/ *
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2000-08-08 10:04:21 -06:00
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************************************************************
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1999-12-05 16:10:37 -07:00
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The Direct Rendering Manager (drm) is a device-independent kernel-level
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device driver that provides support for the XFree86 Direct Rendering
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Infrastructure (DRI).
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The DRM supports the Direct Rendering Infrastructure (DRI) in four major
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ways:
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1. The DRM provides synchronized access to the graphics hardware via
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the use of an optimized two-tiered lock.
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2. The DRM enforces the DRI security policy for access to the graphics
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hardware by only allowing authenticated X11 clients access to
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restricted regions of memory.
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3. The DRM provides a generic DMA engine, complete with multiple
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queues and the ability to detect the need for an OpenGL context
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switch.
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4. The DRM is extensible via the use of small device-specific modules
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that rely extensively on the API exported by the DRM module.
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