View source for Dota 2 engine branch (Source)

{{tabs|Dota 2 engine branch|source=1|source2=1}}
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{{Infobox engine
| title		 = Dota 2 engine branch
| developer	 = [[Valve Corporation]]
| platform	 = {{Win|1}}</br>{{mac|1}}</br>{{linux|1}}
| releasedates	 = July 9, 2013
| latest_releasedates	 = September 2, 2015</br><small>(replaced by {{src2}})</small>
| status = Discontinued
| sdk		 = None
| forks		 = 
| previousengine = {{csgobranch|2}}
| nextengine = 
}}
The {{dota2branch|4}} was introduced in 2013 with the release of {{dota2|2}}. It succeeded the {{csgobranch|3.1|nt=0}}, and was the final post-Orange Box Source branch to be made. This branch was quickly succeeded by the release of {{dota2|1}} Reborn update in 2015, which upgraded the game to the then-new {{src2|4}} engine, and made CS:GO branch the latest post-Orange Box Source 1 branch to be available for licensing and maintained until the release of {{cs2|1}} (which made {{portal2branch|1}} the latest post-OB Source 1 branch that still being maintained with updates). Additionally, this is the only Source 1 engine branch that was never licensed to third-party developers. 

== Features {{confirm}} ==

New since the {{csgobranch|4}} is:

; Cloth simulation
: Real-time cloth simulation (i.e. soft-body physics).
; Global lighting
: The world is lit and shadowed dynamically with {{Ent|env_global_light}} (in addition to pre-compiled light).
; [[Steamworks]] integration
: Building upon community-driven features from {{tf2|3.1}} players will be able to share strategy guides and coach newer players through Steamworks.
; MultiBlend Textures
: 4-way texture blending, upgrading/replacing [[WorldVertexTransition]]
; Screen-space Anti-aliasing
: Anti-aliasing for use with deferred shading
; Screen Space Ambient Occlusion
: [[SSAO]] post-process shader
; Published demo file format
: [[Dota 2 Demo Format]] contains a link and instructions for parsing the ''Dota 2'' demo files
; Custom Addon Support
: See the [[Dota 2 Workshop Tools|Dota 2 Workshop Tools]] for more details.

== Availability and usage ==
Source code and SDK Base for these branches is not available, and this branch was not available for licensing. Additionally, unlike the rest of Source 1 branches, this branch does not have official tools (like {{hammer|1}}) whatsoever.
* {{Code|2013}}{{dota2|4}} (formerly, uses {{source2|4}} since the Reborn update.)

== See also ==
*[[Dota 2 engine branch (Source 2)]]
*{{dota2|4}}
*{{csgobranch|4}}

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