===== Requirements =====

The vrdoro platform is a web application that requires a web browser and an active internet connection.

==== Software ====

All software systems and devices are supported in the latest versions. We specify a minimum version for some environments. For technical reasons, the use of versions older than the latest version cannot be fully guaranteed.

  * Operating system
    * Windows (from version 10)
    * MacOs / iOS / iPadOS
    * Android (+Samsung)
    * Linux
    * Meta Horizon OS

  * Browser
    * Chrome
    * Firefox
    * Safari
    * Samsung
    * Edge

==== Hardware ====

    * Desktop PCs
    * Notebooks
    * Smartphones
    * Tablets
    * VR headsets (Meta Quest 2, 3 and Pro)
    * Apple Vision Pro (in development)

Application options such as VR tours, 360-degree views, the vrdoro store and the 3D configurator vrdoro-visualiser allow the use of VR headsets.

==== Notes on WebGL ====
The technology required to display 3D scenes is WebGL2. This is supported from the following browser versions:
  * Chrome from version 56
  * Firefox from version 51
  * Safari from version 15
  * Edge from version 79
  * Meta Quest Browser from Quest 1

For Android devices, at least the following browser version must be available
  * Chrome from version 124
  * Firefox from version 125
  * Samsung from version 7.2

Source: https://caniuse.com/?search=webgl2

If WebGL2 is not available, this message appears:

//The configurator cannot be displayed without WebGL2 support. Please update the graphics card drivers and try again. You can find details about your device at [[https://webglreport.com/?v=2|WebGL2 Report]]//

WebGL 2 support may be disabled when using a Firefox browser. Therefore, check this in Firefox:
  - Enter ''about:config'' in the URL line
  - Confirm that you want to edit the settings
  - Filter for ''webgl2''
  - Set the value ''webgl.enable-webgl2'' to ''true''

{{:pasted:20240527-084451.png}}

Also check the value ''webgl.disabled''. Here ''false'' is the correct value.



==== Notes on use with a headset ====

=== Exiting the VR view ===
After exiting the VR view, the 3D view should be reloaded in the browser so that the position of the virtual viewer is updated.

=== Headset calibration ===
Calibrating the VR headset ensures correct size perception and ground position in the VR views. With the Meta Quest 3, repeatedly taking the VR headset off and on can lead to the feeling that the floor is too high. The feet then feel as if they are below the floor. This can be checked by placing the hand controller on the real floor. The virtual hand controller visible in the VR view must then also be on or above the floor. If this is not the case and the controller is below the floor, the VR headset (or the Guardian) must be recalibrated.