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https://github.com/X11Libre/xf86-video-amdgpu.git
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e5dfb6c266
When this option is enabled, most pixmaps (including the screen pixmap) are allocated in system RAM and mostly accessed by the CPU. Changed areas of the screen pixmap are copied to dedicated per-CRTC scanout pixmaps regularly, triggered by the vblank interrupt. (Cherry picked from radeon commits ae92d1765fa370a8d94c2856ad6c45d273ec3c69 and 1af044d7eee211fd4b248c236280274a68334da5) [ Michel Dänzer: Additional adjustements for the amdgpu driver ] Signed-off-by: Darren Powell <darren.powell@amd.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
136 lines
3.2 KiB
Groff
136 lines
3.2 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 CI 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 \*qNoAccel\*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 to
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.B enable
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hardware acceleration.
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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 \*qDRI3\*q \*q" boolean \*q
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Enable the DRI3 extension. The default is
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.B off.
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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 \*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.x.org/mailman/listinfo/xorg-driver-ati
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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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