We are still actively working on the spam issue.

Difference between revisions of "Radeon"

From InstallGentoo Wiki
Jump to: navigation, search
(What should I expect?)
 
(12 intermediate revisions by the same user not shown)
Line 1: Line 1:
[[File:Xf86-video-ati.png|thumb|Xf86-video-ati]]
+
[[File:Xf86-video-ati.png|thumb]]
 
 
Radeon is the [[GNU/Linux|Linux]] open-source graphics driver for AMD/ATI Radeon [[GPU |graphics cards]] that is often replaced by fglrx due to seemingly poor 3D acceleration.
 
 
 
The performance issues are generally caused by generic Xorg profiles which have to cater to a myriad AMD GPUs with a different feature-set and capabilities, forcing them to only enable features that are common to most cards, or none at all (thus, the driver works as is).
 
  
 +
Radeon is part of the [[GNU/Linux|Linux]] open-source graphics driver stack for AMD/ATI Radeon graphics cards that is often replaced by fglrx, the proprietary alternative, due to seemingly poor 3D acceleration and threading (soon to be provided by Mesa).
  
 +
The stack consists of xf86-video-ati, mesa, and, for some older cards, llvm (to compile the shaders). Some cards support the new AMDGPU driver that replaces this one, as well as mesa.
  
 
==Building from source==
 
==Building from source==
This guide will attempt to improve 3D acceleration (or outright enable it, if it's disabled) by making use of the new feature-set, namely, DRI3.
 
 
{{warning|''This is quite bleeding edge and might not work. Should it fail, you will be on your own.''}}
 
{{warning|''This is quite bleeding edge and might not work. Should it fail, you will be on your own.''}}
  
Line 16: Line 13:
  
 
Back your xorg.conf up by issuing {{ic|<nowiki>sudo cp /etc/X11/xorg.conf /etc/X11/xorg.conf~</nowiki>}}
 
Back your xorg.conf up by issuing {{ic|<nowiki>sudo cp /etc/X11/xorg.conf /etc/X11/xorg.conf~</nowiki>}}
 
==== What should I expect? ====
 
Run: {{ic|<nowiki>vblank_mode=0 glxgears & sleep 16 ; killall glxgears</nowiki>}}.
 
 
{| class="wikitable" style="margin: 1em auto 1em auto;"
 
|-
 
! Test
 
! GPU
 
! Before
 
! After
 
|-
 
| glxgears
 
| r9 280x (gigabyte)
 
| 3258.964 FPS
 
| 19291.922 FPS
 
|}
 
 
glxgears is a very simple test and it won't give you real world results, but you can use it to test a driver's 3D performance relative to the default one, which normally comes with it disabled out of the box. As you can see here, the results speak for themselves and indicate a performance increase of roughly 560%. For a real-world focused benchmark, scroll down—in CPU bound scenarios you are likely to see performance increases of up to 40%, assuming DRI2 was enabled and you have successfully enabled DRI3.
 
  
 
=== Requirements & dependencies ===
 
=== Requirements & dependencies ===
  `--  media-libs/mesa  (>=11.0, preferably -git<sup>[http://www.x.org/wiki/radeonBuildHowTo/]</sup>)
+
  `--  media-libs/mesa  (>=11.0, preferably -git as this will have a major effect on performance, more so than this component<sup>[http://www.x.org/wiki/radeonBuildHowTo/]</sup>)
 
  `--  x11-libs/libdrm  (>=2.4.58, preferably -git<sup>[http://www.x.org/wiki/radeonBuildHowTo/]</sup>, since this is the library DRI uses)
 
  `--  x11-libs/libdrm  (>=2.4.58, preferably -git<sup>[http://www.x.org/wiki/radeonBuildHowTo/]</sup>, since this is the library DRI uses)
 
  `--  x11-libs/libpciaccess (>=0.8.0)
 
  `--  x11-libs/libpciaccess (>=0.8.0)
Line 71: Line 50:
 
# {{ic|git clone git://anongit.freedesktop.org/xorg/driver/xf86-video-ati}}
 
# {{ic|git clone git://anongit.freedesktop.org/xorg/driver/xf86-video-ati}}
 
# {{ic|cd xf86-video-ati}}
 
# {{ic|cd xf86-video-ati}}
# {{ic|<nowiki>./autogen.sh --prefix=/opt/xorg</nowiki>}}
+
# {{ic|<nowiki>./autogen.sh</nowiki>}}
# {{ic|make}}
+
# {{ic|<nowiki>CFLAGS="-O3 -march=native" ./configure --prefix=/opt/xorg</nowiki>}}
 +
# {{ic|make -jn }}, where n is the number of jobs you want to spawn
 
# {{ic|sudo make install}}
 
# {{ic|sudo make install}}
  
Afterwards, edit:
+
Example xorg.conf (compulsory reading, since you need to determine the ModulePath under files): http://pastebin.com/raw/aE3e21Bn
{{hc|/etc/X11/xorg.conf|<nowiki>
 
Section "Files"
 
  ModulePath "/opt/xorg/lib/xorg/modules,/usr/lib/xorg/modules"
 
EndSection
 
</nowiki>}}
 
 
 
Make sure you have these as well:
 
 
 
{{bc|<nowiki>
 
Section "Module"
 
  Load "dri"
 
  Load "dbe" # Double buffer extension // See compatibility on features page
 
  Load "glx" # OpenGL X protocol interface // See compatibility on features page
 
  Load "extmod" # Misc. required extension // See compatibility on features page
 
EndSection
 
   
 
Section "DRI"
 
  Group        "video"
 
  Mode        0666
 
EndSection
 
</nowiki>}}
 
 
 
Then, edit:
 
{{hc|/etc/X11/xorg.conf.d/20-radeon.conf|<nowiki>
 
Section "Device"
 
  Identifier "radeonVGA"
 
  Driver "radeon"
 
  Option "AccelMethod" "Glamor" # See compatibility on features page
 
  Option "DRI3" "on" # Compatibility not very well documented, remove it if it fails
 
  Option "EnablePageFlip" "on"
 
EndSection
 
</nowiki>}}
 
 
 
Feel free to run {{ic|sudo chattr +i /etc/X11/xorg.conf}} to keep X from overwriting this ({{ic|chattr -i}} will undo this).
 
 
 
Example xorg.conf: http://pastebin.com/raw/aE3e21Bn
 
 
 
'''IMPORTANT''': Recompiling the driver will become a necessity after each major X upgrade (eg: 1.16 --> 1.17, not 1.16 --> 1.16.4), due to ABI changes.
 
  
=== Testing ===
+
{{warning|Recompiling the driver will become a necessity after each major X upgrade (eg: 1.16 --> 1.17, not 1.16 --> 1.16.4), due to ABI changes.}}
To ensure DRI3 is enabled, run {{ic|<nowiki>cat /var/log/Xorg.0.log | grep -i DRI3</nowiki>}}.
 
Output should be as follows:
 
{{bc|<nowiki>
 
[    14.031] (**) RADEON(0): Option "DRI3" "on"
 
[    16.723] (**) RADEON(0): DRI3 enabled
 
</nowiki>}}
 
  
 
== External links ==
 
== External links ==
*[http://www.x.org/wiki/radeonBuildHowTo/ For more info (eg: building libdrm and mesa from source, in this order)]
+
*[http://www.x.org/wiki/radeonBuildHowTo/ For more info (eg: building libdrm and mesa from source)]
 
*[https://www.phoronix.com/scan.php?page=article&item=radeon-dri3-perf&num=1 Real world benchmarks]
 
*[https://www.phoronix.com/scan.php?page=article&item=radeon-dri3-perf&num=1 Real world benchmarks]
  

Latest revision as of 15:39, 14 February 2017

Xf86-video-ati.png

Radeon is part of the Linux open-source graphics driver stack for AMD/ATI Radeon graphics cards that is often replaced by fglrx, the proprietary alternative, due to seemingly poor 3D acceleration and threading (soon to be provided by Mesa).

The stack consists of xf86-video-ati, mesa, and, for some older cards, llvm (to compile the shaders). Some cards support the new AMDGPU driver that replaces this one, as well as mesa.

Building from source

Warning: This is quite bleeding edge and might not work. Should it fail, you will be on your own.

Before starting

Check your cards feature-set: https://wiki.freedesktop.org/xorg/RadeonFeature/#index6h2 "Decoder ring for engineering vs marketing names" will tell you what model your card actually is.

Back your xorg.conf up by issuing sudo cp /etc/X11/xorg.conf /etc/X11/xorg.conf~

Requirements & dependencies

`--  media-libs/mesa  (>=11.0, preferably -git as this will have a major effect on performance, more so than this component[1])
`--  x11-libs/libdrm  (>=2.4.58, preferably -git[2], since this is the library DRI uses)
`--  x11-libs/libpciaccess (>=0.8.0)
`--  x11-base/xorg-server (ideally, >=1.17)
`--  x11-libs/glamor (>=0.6)
`--  virtual/udev
`--  x11-proto/fontsproto
`--  x11-proto/randrproto
`--  x11-proto/renderproto
`--  x11-proto/videoproto
`--  x11-proto/xextproto
`--  x11-proto/xf86driproto
`--  x11-proto/xproto
`--  sys-devel/automake  (>1.15)
`--  sys-devel/autoconf  (>=2.69)
`--  sys-devel/libtool  (>=2.4)
`--  sys-devel/m4
`--  x11-misc/util-macros  (>=1.18)
`--  media-fonts/font-util  (>=1.2.0)
`--  virtual/pkgconfig
`--  x11-proto/glproto
`--  x11-proto/dri2proto
`--  x11-proto/dri3proto
`--  x11-proto/xineramaproto

Certain package managers can automatically build the dependency tree for you. However, you ought to double check to make sure the above requirements coincide, in terms of versions.

  • Aptitude: run sudo apt-get build-dep xserver-xorg-video-ati;
  • Yum: run sudo yum-builddep xorg-x11-drv-ati;
  • Portage: emerge the actual driver to satisfy all dependencies;
  • BUILDPKG (Arch): run sudo makepkg -s xf86-video-ati.

Compiling

  1. git clone git://anongit.freedesktop.org/xorg/driver/xf86-video-ati
  2. cd xf86-video-ati
  3. ./autogen.sh
  4. CFLAGS="-O3 -march=native" ./configure --prefix=/opt/xorg
  5. make -jn , where n is the number of jobs you want to spawn
  6. sudo make install

Example xorg.conf (compulsory reading, since you need to determine the ModulePath under files): http://pastebin.com/raw/aE3e21Bn

Warning: Recompiling the driver will become a necessity after each major X upgrade (eg: 1.16 --> 1.17, not 1.16 --> 1.16.4), due to ABI changes.

External links