1 .\" $NetBSD: drm.4,v 1.7 2009/05/12 08:16:46 wiz Exp $
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31 .Nd Direct Rendering Manager (DRI kernel support)
45 .\".Cd options DRM_LINUX
48 .Tn Direct Rendering Manager
50 .Tn Direct Rendering Infrastructure
52 .Pa http://dri.freedesktop.org/ )
53 for supporting video acceleration.
54 For older chipsets it's used for 3d acceleration only, but newer chipsets
57 for 2d acceleration (XVideo, exa(4)) as well.
61 drivers provide support for the following chipsets:
63 .Bl -tag -width XsavagedrmXXX -offset indent -compact
65 Intel i915, i945, i965, G3x, G4x
67 Mach64 (3D Rage Pro, Rage)
69 Matrox G[24]00, G[45]50
84 To make use of the driver:
88 The kernel must include
92 MesaLib and the video driver to be used must be compiled with DRI support
94 DRI must be enabled in the
105 In order to use two graphics cards (an on-board and another
106 AGP/PCI/PCIe card) with DRI, a
110 has to be created using
113 Debugging output can be enabled and disabled by setting the
123 DRM was first available for Linux.
124 Subsequently Eric Anholt ported the DRM kernel modules to
127 Disable AIGLX if necessary
129 .Bd -literal -offset indent
130 Section "ServerFlags"
135 Option "Composite" "Disable"
139 .Cd options DRM_DEBUG
140 can slow DRI down a lot, disable it once