Editing Direct Rendering Infrastructure (section)

== History ==
The project was started by Jens Owen and Kevin E. Martin from Precision Insight (funded by [[Silicon Graphics]] and [[Red Hat]]).<ref name="DRI history"/><ref name="DRI design document">{{cite web|last1=Owen|first1=Jens|last2=Martin|first2=Kevin E.|title=A Multipipe Direct Rendering Architecture for 3D|url=http://dri.sourceforge.net/doc/design_high_level.html|date=15 September 1998|access-date=16 April 2016|archive-date=3 March 2016|archive-url=https://web.archive.org/web/20160303230126/http://dri.sourceforge.net/doc/design_high_level.html|url-status=dead}}</ref> It was first made widely available as part of [[XFree86]] 4.0<ref name="DRI history"/><ref>{{cite web|title=Release Notes for XFree86 4.0|url=http://www.xfree86.org/4.0/RELNOTES2.html#12|website=XFree86 Project|date=7 March 2000|access-date=16 April 2016}}</ref> and is now part of the [[X.Org Server]]. It is currently maintained by the [[free software community]].

Work on DRI2 started at the 2007 X Developers' Summit from a proposal by [[Kristian Høgsberg]].<ref>{{cite web|title=X Developers' Summit 2007 - Notes|url=http://www.x.org/wiki/Events/XDS2007/Notes/|website=X.Org|access-date=7 March 2016}}</ref><ref>{{cite mailing list|mailing-list=xorg|last=Høgsberg|first=Kristian|title=DRI2 Design Wiki Page|date=3 October 2007|url=https://lists.x.org/archives/xorg/2007-October/028746.html}}</ref> Høgsberg himself wrote the new DRI2 extension and the modifications to [[Mesa (computer graphics)|Mesa]] and [[GLX]].<ref>{{cite mailing list|mailing-list=xorg|last=Høgsberg|first=Kristian|title=Plans for merging DRI2 work|date=4 February 2008|url=https://lists.x.org/archives/xorg/2008-February/032412.html}}</ref> In March 2008 DRI2 was mostly done,<ref>{{cite mailing list|mailing-list=xorg|last=Høgsberg|first=Kristian|title=DRI2 committed|date=15 February 2008|url=https://lists.x.org/archives/xorg/2008-February/032693.html}}</ref><ref>{{cite mailing list|mailing-list=xorg|last=Høgsberg|first=Kristian|title=DRI2 direct rendering|date=31 March 2008|url=https://lists.x.org/archives/xorg/2008-March/034048.html}}</ref><ref name="Høgsberg 2008 DRI2">{{cite web|last1=Høgsberg|first1=Kristian|title=DRI2 Direct Rendering|url=http://hoegsberg.blogspot.com/2008/03/i-just-committed-last-bit-of-dri2-work.html|date=31 March 2008|access-date=20 April 2016}}</ref> but it couldn't make into [[X.Org Server]] version 1.5<ref name="Høgsberg DRI2 GEM">{{cite mailing list|mailing-list=xorg|last=Høgsberg|first=Kristian|title=Backing out DRI2 from server 1.5|date=4 August 2008|url=https://lists.x.org/archives/xorg/2008-August/037512.html}}</ref> and had to wait until version 1.6 from February 2009.<ref>{{cite web|title=Server 1.6 branch|url=http://www.x.org/wiki/Server16Branch/|website=X.org|access-date=7 February 2015}}</ref> The DRI2 extension was officially included in the X11R7.5 release of October 2009.<ref>{{cite web|title=Release Notes for X11R7.5|url=http://www.x.org/releases/X11R7.5/doc/RELNOTES.html|website=X.Org|access-date=20 April 2016}}</ref> The first public version of the DRI2 protocol (2.0) was announced in April 2009.<ref name="dri2proto 2.0">{{cite mailing list|mailing-list=xorg-announce|last=Høgsberg|first=Kristian|title=[ANNOUNCE] dri2proto 2.0|date=20 April 2009|url=https://lists.x.org/archives/xorg-announce/2009-April/000827.html}}</ref> Since then there have been several revisions, the most recent being version 2.8 from July 2012.<ref name="dri2proto 2.8">{{cite mailing list|mailing-list=xorg-announce|last=Airlie|first=Dave|title=[ANNOUNCE] dri2proto 2.8|date=11 July 2012|url=https://lists.freedesktop.org/archives/xorg-announce/2012-July/002001.html}}</ref>

Due to several limitations of DRI2, a new extension called DRI-Next was proposed by Keith Packard and Emma Anholt at the X.Org Developer's Conference 2012.<ref name="Packard 2012 DRI-Next" /> The extension was proposed again as DRI3000 at [[Linux.conf.au]] 2013.<ref name="Willis 2013" /><ref name="Packard 2013 DRI3000" /> DRI3 and Present extensions were developed during 2013 and merged into the X.Org Server 1.15 release from December 2013.<ref>{{cite web|last1=Packard|first1=Keith|title=[ANNOUNCE] xorg-server 1.14.99.901|url=http://lists.freedesktop.org/archives/xorg/2013-November/056148.html|website=X.org|date=November 2013 |access-date=9 February 2015}}</ref><ref>{{cite web|last1=Larabel|first1=Michael|title=X.Org Server 1.15 Release Has Several New Features|url=https://www.phoronix.com/scan.php?page=news_item&px=MTU1NDQ|website=Phoronix|access-date=9 February 2015}}</ref> The first and only version of the DRI3 protocol (1.0) was released in November 2013.<ref name="dri3proto 1.0">{{cite mailing list|mailing-list=xorg-announce|last=Packard|first=Keith|title=[ANNOUNCE] dri3proto 1.0|date=1 November 2013|url=https://lists.x.org/archives/xorg-announce/2013-November/002349.html}}</ref>

<gallery>
Linux graphics drivers 2D.svg|2D drivers inside of the [[display server|X server]]
Linux graphics drivers Utah GLX.svg|Indirect rendering over [[GLX]], using [[Utah GLX]]; separate: [[fbdev]]
Linux graphics drivers DRI early.svg|Early DRI: [[Mode setting]] is still being performed by the [[X display server]], which forces it to be run as [[superuser|root]]
Linux graphics drivers DRI current.svg|Finally all access goes through the [[Direct Rendering Manager]]
Linux graphics drivers DRI Wayland.svg|In Linux kernel 3.12 ''render nodes'' were introduced; [[Direct Rendering Manager|DRM]] and the [[KMS driver]] were split. [[Wayland (display server protocol)|Wayland]] implements direct rendering over [[EGL (API)|EGL]]
</gallery>