> ## Documentation Index
> Fetch the complete documentation index at: https://docs.altoura.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Installing Unity

# Choosing a Unity Version

Altoura is built on Unity 2021.3.56f2 LTS and the app currently supports direct asset bundles built only on this platform.

# Basic Installation

You can find Unity 2021.3.56f2 installation on the [Unity LTS Release page](https://unity.com/releases/editor/whats-new/2021.3.56f2).

<Check>
  ### Unity Hub

  We highly recommend using [Unity Hub](https://unity3d.com/get-unity/download) to manage installations.
</Check>

When installing, you will want to select the following components to add to Unity to create content across the spectrum of Altoura supported devices.

<img src="https://mintcdn.com/altoura-785c3552/FoIV9SzgFfYMUXXv/images/docs/25c559a-hubdownload2.PNG?fit=max&auto=format&n=FoIV9SzgFfYMUXXv&q=85&s=37ba2aacc257fc14c9320d252df73812" alt="" width="967" height="873" data-path="images/docs/25c559a-hubdownload2.PNG" />

Then just wait for the editor to download and install.

# Create a Project

You can name it AltouraTutorial or anything you would like. The only important thing is to select the 3D project type and hit create.

<img src="https://mintcdn.com/altoura-785c3552/_Fb1P96m80-mEejg/images/docs/5707b18-unityHub.PNG?fit=max&auto=format&n=_Fb1P96m80-mEejg&q=85&s=2f1d3274dd1ae16acd19dfb57e540f26" alt="1571" width="1571" height="754" data-path="images/docs/5707b18-unityHub.PNG" />

<Warning>
  ### For HoloLens creators

  There is an additional rendering setting that needs to be set in Unity so that the scene renders correctly. If it is not set, asset bundle content that is viewed on HoloLens will be viewed only through one eye, which very uncomfortable for HoloLens users.

  This setting is very important.
</Warning>

# To set the HoloLens rendering mode to Single-Pass Instanced.

Under **File -> Build Settings**, switch the *Platform* to **Universal Windows Platform**. Then select the **Player Settings** button in the lower left hand corner of the **Build Settings** menu to bring up the **Project Settings**.

<img src="https://mintcdn.com/altoura-785c3552/ZuSJMQqW-zq_BCI_/images/docs/c30ae7c-BuildSettings.JPG?fit=max&auto=format&n=ZuSJMQqW-zq_BCI_&q=85&s=1988442e706df9995167266bf1ec185f" alt="948" width="948" height="917" data-path="images/docs/c30ae7c-BuildSettings.JPG" />

Inside of the **Project Settings**, go to **OpenXR** under **XR Plug-in Management**. Set *Render Mode* to *Single Pass Instanced*.

<img src="https://mintcdn.com/altoura-785c3552/pvN_b_9fLlPnvtUQ/images/docs/068469b-renderingModeUnity2020.PNG?fit=max&auto=format&n=pvN_b_9fLlPnvtUQ&q=85&s=1308d3e3e658e3e5e28fbd3dac39061d" alt="1030" width="1030" height="923" data-path="images/docs/068469b-renderingModeUnity2020.PNG" />

Now select the **Switch Platform** button to apply these settings. (Don't worry if you are doing work for other devices like PC or iOS, switching platforms will NOT be required for each device.)

<img src="https://mintcdn.com/altoura-785c3552/ZuSJMQqW-zq_BCI_/images/docs/b22c8ce-BuildSettings3.JPG?fit=max&auto=format&n=ZuSJMQqW-zq_BCI_&q=85&s=bc2ecd16191c8f14dd181a89b79deb97" alt="940" width="940" height="400" data-path="images/docs/b22c8ce-BuildSettings3.JPG" />

* [Install Unity Asset Bundle Browser](/docs/unity/import-content/create-asset-bundle)