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RADEON(4x)			  X Version 11			      RADEON(4x)

NAME
     radeon - ATI/AMD RADEON video driver for XLibre

SYNOPSIS
     Section "Device"
       Identifier "devname"
       Driver "radeon"
       ...
     EndSection

DESCRIPTION
     radeon  is  an  XLibre driver for ATI/AMD RADEON-based video cards with the
     following features:

     *
       Full support for 8-, 15-, 16- and 24-bit pixel  depths,	and  for  30-bit
       depth on Linux 3.16 and later;
     *
       RandR 1.2 and RandR 1.3 support;
     *
       Full EXA 2D acceleration;
     *
       Textured XVideo acceleration including anti-tearing support (Bicubic fil-
       tering only available on R/RV3xx, R/RV/RS4xx, R/RV5xx, and RS6xx/RS740);
     *
       3D acceleration;

SUPPORTED HARDWARE
     The radeon driver supports PCI, AGP, and PCIe video cards based on the fol-
     lowing ATI/AMD chips (note: list is non-exhaustive):

     R100	 Radeon 7200
     RV100	 Radeon 7000(VE), M6, RN50/ES1000
     RS100	 Radeon IGP320(M)
     RV200	 Radeon 7500, M7, FireGL 7800
     RS200	 Radeon IGP330(M)/IGP340(M)
     RS250	 Radeon Mobility 7000 IGP
     R200	 Radeon 8500, 9100, FireGL 8800/8700
     RV250	 Radeon 9000PRO/9000, M9
     RV280	 Radeon 9200PRO/9200/9200SE/9250, M9+
     RS300	 Radeon 9100 IGP
     RS350	 Radeon 9200 IGP
     RS400/RS480
		 Radeon XPRESS 200(M)/1100 IGP
     R300	 Radeon 9700PRO/9700/9500PRO/9500/9600TX, FireGL X1/Z1
     R350	 Radeon 9800PRO/9800SE/9800, FireGL X2
     R360	 Radeon 9800XT
     RV350	 Radeon 9600PRO/9600SE/9600/9550, M10/M11, FireGL T2
     RV360	 Radeon 9600XT
     RV370	 Radeon X300, M22
     RV380	 Radeon X600, M24
     RV410	 Radeon X700, M26 PCIe
     R420	 Radeon X800 AGP
     R423/R430	 Radeon X800, M28 PCIe
     R480/R481	 Radeon X850 PCIe/AGP
     RV505/RV515/RV516/RV550
		 Radeon X1300/X1400/X1500/X1550/X2300
     R520	 Radeon X1800
     RV530/RV560
		 Radeon X1600/X1650/X1700
     RV570/R580  Radeon X1900/X1950
     RS600/RS690/RS740
		 Radeon X1200/X1250/X2100
     R600	 Radeon HD 2900
     RV610/RV630
		 Radeon HD 2400/2600/2700/4200/4225/4250
     RV620/RV635
		 Radeon HD 3410/3430/3450/3470/3650/3670
     RV670	 Radeon HD 3690/3850/3870
     RS780/RS880
		 Radeon HD 3100/3200/3300/4100/4200/4250/4290
     RV710/RV730
		 Radeon 						      HD
		 4330/4350/4550/4650/4670/5145/5165/530v/545v/560v/565v
     RV740/RV770/RV790
		 Radeon HD 4770/4730/4830/4850/4860/4870/4890
     CEDAR	 Radeon HD 5430/5450/6330/6350/6370
     REDWOOD	 Radeon HD 5550/5570/5650/5670/5730/5750/5770/6530/6550/6570
     JUNIPER	 Radeon HD 5750/5770/5830/5850/5870/6750/6770/6830/6850/6870
     CYPRESS	 Radeon HD 5830/5850/5870
     HEMLOCK	 Radeon HD 5970
     PALM	 Radeon HD 6310/6250
     SUMO/SUMO2  Radeon HD 6370/6380/6410/6480/6520/6530/6550/6620
     BARTS	 Radeon HD 6790/6850/6870/6950/6970/6990
     TURKS	 Radeon HD 6570/6630/6650/6670/6730/6750/6770
     CAICOS	 Radeon HD 6430/6450/6470/6490
     CAYMAN	 Radeon HD 6950/6970/6990
     ARUBA	 Radeon HD 7000 series
     TAHITI	 Radeon HD 7900 series
     PITCAIRN	 Radeon HD 7800 series
     VERDE	 Radeon HD 7700 series
     OLAND	 Radeon HD 8000 series
     HAINAN	 Radeon HD 8000 series
     BONAIRE	 Radeon HD 7790 series
     KAVERI	 KAVERI APUs
     KABINI	 KABINI APUs
     HAWAII	 Radeon R9 series
     MULLINS	 MULLINS APUs

CONFIGURATION DETAILS
     Please refer to xorg.conf(5) for general configuration details.  This  sec-
     tion only covers configuration details specific to this driver.

     The following driver Options are supported:

     Option "SWcursor" "boolean"
	    Selects software cursor.  The default is off.

     Option "Accel" "boolean"
	    Enables or disables all hardware acceleration.
	    The default is on.

     Option "ZaphodHeads" "string"
	    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.
	    For example: Option "ZaphodHeads" "LVDS,VGA-0"  will  assign  xrandr
	    outputs LVDS and VGA-0 to this instance of the driver.

     Option "ColorTiling" "boolean"
	    The  framebuffer  can  be  addressed either in linear or tiled mode.
	    Tiled mode can provide significant performance benefits with 3D  ap-
	    plications.  Tiling will be disabled if the drm module is too old or
	    if	the current display configuration does not support it.	On R600+
	    this enables 1D tiling mode.
	    The default value is on for R/RV3XX, R/RV4XX, R/RV5XX, RS6XX, RS740,
	    R/RV6XX, R/RV7XX, RS780, RS880, EVERGREEN, CAYMAN,	ARUBA,	Southern
	    Islands,  and Sea Islands and off for R/RV/RS1XX, R/RV/RS2XX, RS3XX,
	    and RS690/RS780/RS880 when fast fb feature is enabled.

     Option "ColorTiling2D" "boolean"
	    The framebuffer can be addressed either in linear, 1D, or  2D  tiled
	    modes.   2D  tiled mode can provide significant performance benefits
	    over 1D tiling with 3D applications.  Tiling will be disabled if the
	    drm module is too old or if the current display  configuration  does
	    not  support  it.	KMS  ColorTiling2D is only supported on R600 and
	    newer chips and requires Mesa 9.0 or newer for R6xx-ARUBA, Mesa  9.2
	    or	newer  for  Southern Islands, and Mesa 10.1 or newer for Sea Is-
	    lands.
	    The default value is on for R/RV6XX, R/RV7XX,  RS780,  RS880,  EVER-
	    GREEN, CAYMAN, ARUBA, Southern Islands, and Sea Islands.

     Option "DRI" "integer"
	    Define  the  maximum level of DRI to enable.  Valid values are 2 for
	    DRI2 or 3 for DRI3.  The default is 3 for DRI3 if the  Xorg  version
	    is	>=  1.18.3  and  glamor is enabled, otherwise 2 for DRI2.  Note:
	    DRI3 may not work correctly in all cases with EXA,	enable	at  your
	    own risk.

     Option "EnablePageFlip" "boolean"
	    Enable DRI2 page flipping.	The default is on.  Pageflipping is sup-
	    ported on all radeon hardware.

     Option "TearFree" "boolean"
	    Set  the  default value of the per-output 'TearFree' property, which
	    controls tearing prevention using the hardware page flipping  mecha-
	    nism.   TearFree is on for any CRTC associated with one or more out-
	    puts with TearFree on.  Two separate scanout buffers need to be  al-
	    located  for each CRTC with TearFree on.  If this option is set, the
	    default value of the property is 'on' or 'off' accordingly.  If this
	    option isn't set, the default value of the property is  auto,  which
	    means  that  TearFree  is on for rotated outputs, outputs with RandR
	    transforms applied and for RandR 1.4  secondary  outputs,  otherwise
	    off.

     Option "AccelMethod" "string"
	    Chooses  between available acceleration architectures.  Valid values
	    are EXA (for pre-TAHITI GPUs) and glamor (for R300 or higher).   The
	    default is glamor with R600 or newer (with Xorg >= 1.18.3, otherwise
	    with TAHITI or newer), otherwise EXA.

     The following driver Options are supported for glamor:

     Option "ShadowPrimary" "boolean"
	    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  work-
	    loads,  potentially  at  the expense of other (e.g. 3D, video) work-
	    loads.  Note in particular that enabling this option currently  dis-
	    ables page flipping.  The default is off.

     The following driver Options are supported for EXA:

     Option "EXAVSync" "boolean"
	    This  option  attempts to avoid tearing by stalling the engine until
	    the display controller has passed the destination  region.	 It  re-
	    duces tearing at the cost of performance and has been known to cause
	    instability on some chips.	The default is off.

     Option "EXAPixmaps" "boolean"
	    Under  KMS,  to avoid thrashing pixmaps in/out of VRAM on low memory
	    cards, we use a heuristic based on VRAM amount to determine  whether
	    to allow EXA to use VRAM for non-essential pixmaps.  This option al-
	    lows  us  to  override the heuristic.  The default is on with > 32MB
	    VRAM, off with < 32MB  or  when  fast  fb  feature	is  enabled  for
	    RS690/RS780/RS880.

     Option "SwapbuffersWait" "boolean"
	    This  option controls the behavior of glXSwapBuffers and glXCopySub-
	    BufferMESA calls by GL applications.  If  enabled,	the  calls  will
	    avoid  tearing by making sure the display scanline is outside of the
	    area to be copied before the copy occurs.  If disabled, no	scanline
	    synchronization  is  performed,  meaning  tearing will likely occur.
	    Note that when enabled, this option can adversely affect the framer-
	    ate of applications that render frames at less than refresh rate.

	    The default value is on.

TEXTURED VIDEO ATTRIBUTES
     The driver supports the following X11 Xv  attributes  for	Textured  Video.
     You can use the "xvattr" tool to query/set those attributes at runtime.

     XV_VSYNC
	    XV_VSYNC  is  used	to control whether textured adapter synchronizes
	    the screen update to the monitor vertical refresh to eliminate tear-
	    ing.  It has two  values:  'off'(0)  and  'on'(1).	The  default  is
	    'on'(1).

     XV_CRTC
	    XV_CRTC  is used to control which display controller (crtc) the tex-
	    tured adapter synchronizes the screen update with when  XV_VSYNC  is
	    enabled.   The  default,  'auto'(-1),  will sync to the display con-
	    troller that more of the video is on; when this  is  ambiguous,  the
	    display  controller associated with the RandR primary output is pre-
	    ferred.  This attribute is useful for things like clone  mode  where
	    the  user  can  best decide which display should be synced.  The de-
	    fault is 'auto'(-1).

     XV_BICUBIC
	    XV_BICUBIC is used to control whether textured adapter should  apply
	    a  bicubic	filter	to  smooth  the  output.  It  has  three values:
	    'off'(0), 'on'(1) and 'auto'(2).  'off' means never apply  the  fil-
	    ter,  'on'	means always apply the filter and 'auto' means apply the
	    filter only if the X and Y sizes are scaled to more than  double  to
	    avoid blurred output.  Bicubic filtering is not currently compatible
	    with  other  Xv  attributes  like hue, contrast, and brightness, and
	    must be disabled to use those attributes.  The default is 'off'(0).

SEE ALSO
     XLibre(1), xorg.conf(5), Xserver(1), X(7)

      1. Wiki page:
	 https://www.x.org/wiki/radeon

      2. Overview about radeon development code:
	 https://github.com/X11Libre/xf86-video-ati

      3. Mailing list:
	 https://lists.freedesktop.org/mailman/listinfo/amd-gfx

      4. IRC channel:
	 #radeon on irc.oftc.net

      5. Query the bugtracker for radeon bugs:
	 https://github.com/X11Libre/xf86-video-ati/issues

AUTHORS
     Authors include:
     Rickard E. (Rik) Faith   faith@precisioninsight.com
     Kevin E. Martin	      kem@freedesktop.org
     Alan Hourihane	      alanh@fairlite.demon.co.uk
     Marc Aurele La France    tsi@xfree86.org
     Benjamin Herrenschmidt   benh@kernel.crashing.org
     Michel Danzer	      michel@daenzer.net
     Alex Deucher	      alexdeucher@gmail.com
     Bogdan D.		      bogdand@users.sourceforge.net
     Eric Anholt	      eric@anholt.net

xlibre-xf86-video-ati 25.0.0	   2024-09-29			      RADEON(4x)

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