Developer Resource: Difference between revisions - VR & AR Wiki - Virtual Reality & Augmented Reality Wiki

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==SDKs==

[[SDKs]] or [[Software Development Kits]] are used to build [[VR]] [[~~games]] and [[experiences~~]]~~. A game/experience~~ can either implement [[OVR]] or [[OpenVR]] or both. This means that the ~~game/experience~~ has access to native functionality in it's corresponding runtime. '''SDKs do not handle [[asynchronous timewarp]] or [[reprojection]], those are handled by the runtime!'''

[[SDKs]] or [[Software Development Kits]] are used to build [[VR apps]]. An [[app]] can either implement [[OVR]] or [[OpenVR]] or both. This means that the app has access to native functionality in it's corresponding runtime. '''SDKs do not handle [[asynchronous timewarp]] or [[reprojection]], those are handled by the runtime!'''

*'''[[OVR]]''' - Made by [[Oculus VR]] for the [[Oculus Rift]]. Current version (14th May 2016) is 1.3.1 and can access all features of the [[Oculus Runtime]].

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==Wrappers and Injectors==

[[Oculus Rift]] [[~~games]]/[[experiences~~]], or better said ~~games/experiences~~ compiled with the [[OVR]] [[dll]]s do not render to the [[HMD]] directly. They render their images and send them to the [[runtime]]. The interface for that are the dlls. [[Wrappers]] replace the content of the dlls with functions that are named identically, but redirect the games rendered image to a different runtime. Equally, they provide the game with the [[rotational tracking|rotation]] and [[positional tracking|position]] data of the headset.

[[Oculus Rift]] [[apps]], or better said apps compiled with the [[OVR]] [[dll]]s do not render to the [[HMD]] directly. They render their images and send them to the [[runtime]]. The interface for that are the dlls. [[Wrappers]] replace the content of the dlls with functions that are named identically, but redirect the games rendered image to a different runtime. Equally, they provide the game with the [[rotational tracking|rotation]] and [[positional tracking|position]] data of the headset.

*[[ReVive]] replaces the content of the dlls with functions that communicate with the [[SteamVR Runtime]]. The game thinks it's connected to a [[Rift]], but it is not. The SteamVR runtime is rendering the game and supports [[reprojection]], but not [[asynchronous timewarp]] (remember, this is a feature of the [[Oculus Runtime]]).