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https://github.com/X11Libre/xf86-video-amdgpu.git
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af0b24c1ac
Option "TearFree" now sets the default value of the output property. See the manpage update for details. TearFree is now enabled by default for outputs using rotation or other RandR transforms, and for RandR 1.4 slave outputs. (Ported from radeon commit 58cd1600057e41aade0106d4acf78e23eac6e44f) Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
151 lines
4.0 KiB
Groff
151 lines
4.0 KiB
Groff
.ds q \N'34'
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.TH AMDGPU __drivermansuffix__ __vendorversion__
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.SH NAME
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amdgpu \- AMD RADEON GPU video driver
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.SH SYNOPSIS
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.nf
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.B "Section \*qDevice\*q"
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.BI " Identifier \*q" devname \*q
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.B " Driver \*qamdgpu\*q"
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\ \ ...
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.B EndSection
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.fi
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.SH DESCRIPTION
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.B amdgpu
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is an __xservername__ driver for AMD RADEON-based video cards with the
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following features:
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.PP
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.PD 0
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.TP 2
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\(bu
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Support for 24-bit pixel depth;
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.TP
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\(bu
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RandR support up to version 1.4;
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.TP
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\(bu
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3D acceleration;
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.PD
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.SH SUPPORTED HARDWARE
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The
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.B amdgpu
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driver supports SI and newer families' video cards.
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.PD
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.SH CONFIGURATION DETAILS
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Please refer to __xconfigfile__(__filemansuffix__) for general configuration
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details. This section only covers configuration details specific to this
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driver.
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.PP
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The following driver
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.B Options
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are supported:
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.TP
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.BI "Option \*qSWcursor\*q \*q" boolean \*q
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Selects software cursor. The default is
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.B off.
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.TP
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.BI "Option \*qAccel\*q \*q" boolean \*q
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Enables or disables all hardware acceleration.
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.br
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The default is
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.B on.
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.TP
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.BI "Option \*qZaphodHeads\*q \*q" string \*q
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Specify the RandR output(s) to use with zaphod mode for a particular driver
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instance. If you use this option you must use this option for all instances
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of the driver.
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.br
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For example:
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.B
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Option \*qZaphodHeads\*q \*qLVDS,VGA-0\*q
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will assign xrandr outputs LVDS and VGA-0 to this instance of the driver.
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.TP
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.BI "Option \*qDRI\*q \*q" integer \*q
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Define the maximum level of DRI to enable. Valid values are 2 for DRI2 or 3 for DRI3.
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The default is
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.B 3 for DRI3
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if the Xorg version is >= 1.18.3, otherwise
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.B 2 for DRI2.
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.TP
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.BI "Option \*qEnablePageFlip\*q \*q" boolean \*q
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Enable DRI2 page flipping. The default is
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.B on.
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.TP
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.BI "Option \*qTearFree\*q \*q" boolean \*q
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Set the default value of the per-output 'TearFree' property, which controls
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tearing prevention using the hardware page flipping mechanism. TearFree is
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on for any CRTC associated with one or more outputs with TearFree on. Two
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separate scanout buffers need to be allocated for each CRTC with TearFree
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on. While TearFree is on for any CRTC, it currently prevents clients from using
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DRI page flipping. If this option is set, the default value of the property is
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'on' or 'off' accordingly. If this option isn't set, the default value of the
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property is
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.B auto,
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which means that TearFree is on for outputs with rotation or other RandR
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transforms, and for RandR 1.4 slave outputs, otherwise off.
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.TP
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.BI "Option \*qAccelMethod\*q \*q" string \*q
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Setting this option to
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.B none
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disables use of the glamor acceleration architecture. In that case, all 2D
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rendering is done by the CPU, but 3D and video hardware acceleration can still
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work. This is mainly useful for OpenGL driver bring-up.
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.br
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The default is to use glamor.
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.PP
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The following driver
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.B Option
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is supported for
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.B glamor
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:
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.TP
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.BI "Option \*qShadowPrimary\*q \*q" boolean \*q
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This option enables a so-called "shadow primary" buffer for fast CPU access to
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pixel data, and separate scanout buffers for each display controller (CRTC).
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This may improve performance for some 2D workloads, potentially at the expense
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of other (e.g. 3D, video) workloads.
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Note in particular that enabling this option currently disables page flipping.
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The default is
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.B off.
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.SH SEE ALSO
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__xservername__(__appmansuffix__), __xconfigfile__(__filemansuffix__), Xserver(__appmansuffix__), X(__miscmansuffix__)
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.IP " 1." 4
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Wiki page:
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.RS 4
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http://www.x.org/wiki/radeon
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.RE
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.IP " 2." 4
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Overview about amdgpu development code:
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.RS 4
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http://cgit.freedesktop.org/xorg/driver/xf86-video-amdgpu/
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.RE
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.IP " 3." 4
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Mailing list:
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.RS 4
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http://lists.freedesktop.org/mailman/listinfo/amd-gfx
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.RE
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.IP " 4." 4
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IRC channel:
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.RS 4
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#radeon on irc.freenode.net
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.RE
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.IP " 5." 4
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Query the bugtracker for amdgpu bugs:
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.RS 4
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https://bugs.freedesktop.org/query.cgi?product=xorg&component=Driver/AMDgpu
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.RE
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.IP " 6." 4
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Submit bugs & patches:
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.RS 4
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https://bugs.freedesktop.org/enter_bug.cgi?product=xorg&component=Driver/AMDgpu
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.RE
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.SH AUTHORS
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.nf
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Authors include:
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Michel D\(:anzer \fImichel@daenzer.net\fP
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Alex Deucher \fIalexdeucher@gmail.com\fP
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