Editing Quake engine (section)

{{Short description|Video game engine developed by id Software}}
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{{DISPLAYTITLE:''Quake'' engine}}
{{Infobox software
| name = ''Quake'' engine
| logo = 
| screenshot = 
| caption = ''[[Quake (video game)|Quake]]'' (1996) powered by ''Quake'' engine.
| collapsible = 
| developer = [[id Software]] ([[John Carmack]], [[Michael Abrash]], John Cash)
| replaces = [[Doom engine|''Doom'' engine]]
| replaced_by = [[Quake II engine|''Quake II'' engine]], [[GoldSrc]]
| latest release version = 1.09
| latest release date = {{Start date and age|1999|12|21}}
| discontinued = yes
| repo = [http://github.com/id-Software/Quake github.com/id-Software/Quake]
<!--| tools                  = [[Quake Army Knife]] -->| programming language = [[C (programming language)|C]], [[Assembly language|Assembly]] (for software rendering & optimization)
| platform = [[DOS]], [[AmigaOS]], [[Microsoft Windows]], [[macOS]], [[Linux]], [[Nintendo 64]], [[Zeebo]], [[Xbox One]], [[Xbox Series X/S]], [[PlayStation 4]], [[PlayStation 5]]
| license = [[GNU General Public License|GNU GPL-2.0-or-later]]
}}
[[File:Nexuiz (screenshot 04).jpg|thumb|Ingame screenshot of the first-person shooter ''[[Nexuiz]]'', running on a modified ''Quake'' engine]]

The '''''Quake'' engine''' (part of '''[[id Tech 2]]''') is the [[game engine]] developed by [[id Software]] to power their 1996 video game ''[[Quake (video game)|Quake]]''. It featured [[true 3D]] [[real-time rendering]]. Since 1999, it has been licensed under the terms of [[GNU General Public License|GNU General Public License v2.0 or later]].

After release, the ''Quake'' engine was immediately [[fork (software development)|fork]]ed. Much of the engine remained in ''[[Quake II]]'' and ''[[Quake III Arena]]''. The ''Quake'' engine, like the [[Doom engine|''Doom'' engine]], used [[binary space partitioning]] (BSP) to optimise the world rendering. The ''Quake'' engine also used [[Gouraud shading]] for moving objects, and a static [[lightmap]] for non-moving objects.

Historically, the ''Quake'' engine has been treated as a separate engine from its successor, the [[Quake II engine|''Quake II'' engine]]. Although the codebases for ''Quake'' and ''Quake II'' were separate GPL releases,<ref>{{cite web |title=Quake engine GPL release |url=https://github.com/id-Software/Quake |access-date=May 24, 2020 |website=[[GitHub]]}}</ref><ref>{{cite web |title=id Tech 2 GPL release |url=https://github.com/id-Software/Quake-2 |access-date=May 24, 2020 |website=[[GitHub]]}}</ref> both engines are now considered variants of id Tech 2.<ref>{{cite web|url=http://www.idsoftware.com/business/idtech2/|title=id Tech 2 page|publisher=[[id Software]]|archive-url=https://web.archive.org/web/20080917045739/http://www.idsoftware.com/business/idtech2/|archive-date=2008-09-17}}</ref>