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.ds q \N'34'
.TH AMDGPU __drivermansuffix__ __vendorversion__
.SH NAME
amdgpu \- AMD RADEON GPU video driver
.SH SYNOPSIS
.nf
.B "Section \*qDevice\*q"
.BI "  Identifier \*q"  devname \*q
.B  "  Driver \*qamdgpu\*q"
\ \ ...
.B EndSection
.fi
.SH DESCRIPTION
.B amdgpu
is an __xservername__ driver for AMD RADEON-based video cards with the
following features:
.PP
.PD 0
.TP 2
\(bu
Support for 24-bit pixel depth;
.TP
\(bu
RandR support up to version 1.4;
.TP
\(bu
3D acceleration;
.PD
.SH SUPPORTED HARDWARE
The
.B amdgpu
driver supports SI and newer families' video cards.
.PD
.SH CONFIGURATION DETAILS
Please refer to __xconfigfile__(__filemansuffix__) for general configuration
details.  This section only covers configuration details specific to this
driver.
.PP
The following driver
.B Options
are supported:
.TP
.BI "Option \*qSWcursor\*q \*q" boolean \*q
Selects software cursor.  The default is
.B off.
.TP
.BI "Option \*qAccel\*q \*q" boolean \*q
Enables or disables all hardware acceleration.
.br
The default is
.B on.

.TP
.BI "Option \*qZaphodHeads\*q \*q" string \*q
Specify the RandR output(s) to use with zaphod mode for a particular driver
instance.  If you use this option you must use this option for all instances
of the driver.
.br
For example:
.B
Option \*qZaphodHeads\*q \*qLVDS,VGA-0\*q
will assign xrandr outputs LVDS and VGA-0 to this instance of the driver.
.TP
.BI "Option \*qDRI\*q \*q" integer \*q
Define the maximum level of DRI to enable. Valid values are 2 for DRI2 or 3 for DRI3.
The default is
.B 3 for DRI3
if the driver was compiled for Xorg >= 1.18.3, otherwise
.B 2 for DRI2.
.TP
.BI "Option \*qEnablePageFlip\*q \*q" boolean \*q
Enable DRI2 page flipping.  The default is
.B on.
.TP
.BI "Option \*qTearFree\*q \*q" boolean \*q
Enable tearing prevention using the hardware page flipping mechanism. This
option currently doesn't have any effect for CRTCs using transforms other than
rotation or reflection. It requires allocating two separate scanout buffers for
each supported CRTC. Enabling this option currently disables Option
\*qEnablePageFlip\*q. The default is
.B off.
.TP
.BI "Option \*qAccelMethod\*q \*q" string \*q
Setting this option to
.B none
disables use of the glamor acceleration architecture. In that case, all 2D
rendering is done by the CPU, but 3D and video hardware acceleration can still
work. This is mainly useful for OpenGL driver bring-up.
.br
The default is to use glamor.

.PP
The following driver
.B Option
is supported for
.B glamor
:
.TP
.BI "Option \*qShadowPrimary\*q \*q" boolean \*q
This option enables a so-called "shadow primary" buffer for fast CPU access to
pixel data, and separate scanout buffers for each display controller (CRTC).
This may improve performance for some 2D workloads, potentially at the expense
of other (e.g. 3D, video) workloads.
Note in particular that enabling this option currently disables page flipping.
The default is
.B off.

.SH SEE ALSO
__xservername__(__appmansuffix__), __xconfigfile__(__filemansuffix__), Xserver(__appmansuffix__), X(__miscmansuffix__)
.IP " 1." 4
Wiki page:
.RS 4
http://www.x.org/wiki/radeon
.RE
.IP " 2." 4
Overview about amdgpu development code:
.RS 4
http://cgit.freedesktop.org/xorg/driver/xf86-video-amdgpu/
.RE
.IP " 3." 4
Mailing list:
.RS 4
http://lists.x.org/mailman/listinfo/xorg-driver-ati
.RE
.IP " 4." 4
IRC channel:
.RS 4
#radeon on irc.freenode.net
.RE
.IP " 5." 4
Query the bugtracker for amdgpu bugs:
.RS 4
https://bugs.freedesktop.org/query.cgi?product=xorg&component=Driver/AMDgpu
.RE
.IP " 6." 4
Submit bugs & patches:
.RS 4
https://bugs.freedesktop.org/enter_bug.cgi?product=xorg&component=Driver/AMDgpu
.RE

.SH AUTHORS
.nf
Authors include:
Michel D\(:anzer            \fImichel@daenzer.net\fP
Alex Deucher             \fIalexdeucher@gmail.com\fP