This guide will show you how to add the Meta Quest video passthrough feature to a StereoKit project. This how-to guide is for Native Android based StereoKit projects. (If you are looking to add passthrough to a .NET Core StereoKit project, check out this post instead.) You can find all the code in this guide over at this git repo.
Prerequisites
- Meta Quest 2
- Visual Studio 2019 or 2022
- Windows 10 or 11
- USB-C cable
- Quest native development environment (https://developer.oculus.com/documentation/native/android/mobile-device-setup/)
Step 1: Get the code
We’ll start from the ground up with a new StereoKit Project. For this tutorial, we will start with the cross-platform template. First, head over to this GitHub repository and clone it locally to your computer: https://github.com/StereoKit/SKTemplate-Universal. To clone, run this command in a command prompt:
git clone https://github.com/StereoKit/SKTemplate-Universal.git
Next, fire up Visual Studio (2019 or 2022), click Open a project or Solution, and open the file StereoKitTemplate.sln that you just cloned. If successful, you should see something like this in the Solution Explorer.
Next, we are going to add the FBExtension class to the StereoKitApp project. To do this, right click on StereoKitApp, click Add, then click Class. Create a new file named PassthroughFBExt.cs. Then paste this code into your new class file:
PassthroughFBExt.cs
using System;
using System.Runtime.InteropServices;
namespace StereoKit.Framework
{
class PassthroughFBExt : IStepper
{
bool extAvailable;
bool enabled;
bool enabledPassthrough;
bool enableOnInitialize;
bool passthroughRunning;
XrPassthroughFB activePassthrough = new XrPassthroughFB();
XrPassthroughLayerFB activeLayer = new XrPassthroughLayerFB();
Color oldColor;
bool oldSky;
public bool Available => extAvailable;
public bool Enabled { get => extAvailable && enabled; set => enabled = value; }
public bool EnabledPassthrough { get => enabledPassthrough; set {
if (Available && enabledPassthrough != value) {
enabledPassthrough = value;
if ( enabledPassthrough) StartPassthrough();
if (!enabledPassthrough) EndPassthrough();
}
} }
public PassthroughFBExt() : this(true) { }
public PassthroughFBExt(bool enabled = true)
{
if (SK.IsInitialized)
Log.Err("PassthroughFBExt must be constructed before StereoKit is initialized!");
Backend.OpenXR.RequestExt("XR_FB_passthrough");
enableOnInitialize = enabled;
}
public bool Initialize()
{
extAvailable =
Backend.XRType == BackendXRType.OpenXR &&
Backend.OpenXR.ExtEnabled("XR_FB_passthrough") &&
LoadBindings();
if (enableOnInitialize)
EnabledPassthrough = true;
return true;
}
public void Step()
{
if (!EnabledPassthrough) return;
XrCompositionLayerPassthroughFB layer = new XrCompositionLayerPassthroughFB(
XrCompositionLayerFlags.BLEND_TEXTURE_SOURCE_ALPHA_BIT, activeLayer);
Backend.OpenXR.AddCompositionLayer(layer, -1);
}
public void Shutdown()
{
EnabledPassthrough = false;
}
void StartPassthrough()
{
if (!extAvailable) return;
if (passthroughRunning) return;
passthroughRunning = true;
oldColor = Renderer.ClearColor;
oldSky = Renderer.EnableSky;
XrResult result = xrCreatePassthroughFB(
Backend.OpenXR.Session,
new XrPassthroughCreateInfoFB(XrPassthroughFlagsFB.IS_RUNNING_AT_CREATION_BIT_FB),
out activePassthrough);
result = xrCreatePassthroughLayerFB(
Backend.OpenXR.Session,
new XrPassthroughLayerCreateInfoFB(activePassthrough, XrPassthroughFlagsFB.IS_RUNNING_AT_CREATION_BIT_FB, XrPassthroughLayerPurposeFB.RECONSTRUCTION_FB),
out activeLayer);
Renderer.ClearColor = Color.BlackTransparent;
Renderer.EnableSky = false;
}
void EndPassthrough()
{
if (!passthroughRunning) return;
passthroughRunning = false;
xrPassthroughPauseFB (activePassthrough);
xrDestroyPassthroughLayerFB(activeLayer);
xrDestroyPassthroughFB (activePassthrough);
Renderer.ClearColor = oldColor;
Renderer.EnableSky = oldSky;
}
#region OpenXR native bindings and types
enum XrStructureType : UInt64
{
XR_TYPE_PASSTHROUGH_CREATE_INFO_FB = 1000118001,
XR_TYPE_PASSTHROUGH_LAYER_CREATE_INFO_FB = 1000118002,
XR_TYPE_PASSTHROUGH_STYLE_FB = 1000118020,
XR_TYPE_COMPOSITION_LAYER_PASSTHROUGH_FB = 1000118003,
}
enum XrPassthroughFlagsFB : UInt64
{
None = 0,
IS_RUNNING_AT_CREATION_BIT_FB = 0x00000001
}
enum XrCompositionLayerFlags : UInt64
{
None = 0,
CORRECT_CHROMATIC_ABERRATION_BIT = 0x00000001,
BLEND_TEXTURE_SOURCE_ALPHA_BIT = 0x00000002,
UNPREMULTIPLIED_ALPHA_BIT = 0x00000004,
}
enum XrPassthroughLayerPurposeFB : UInt32
{
RECONSTRUCTION_FB = 0,
PROJECTED_FB = 1,
TRACKED_KEYBOARD_HANDS_FB = 1000203001,
MAX_ENUM_FB = 0x7FFFFFFF,
}
enum XrResult : UInt32
{
Success = 0,
}
#pragma warning disable 0169 // handle is not "used", but required for interop
struct XrPassthroughFB { ulong handle; }
struct XrPassthroughLayerFB { ulong handle; }
#pragma warning restore 0169
[StructLayout(LayoutKind.Sequential)]
struct XrPassthroughCreateInfoFB
{
private XrStructureType type;
public IntPtr next;
public XrPassthroughFlagsFB flags;
public XrPassthroughCreateInfoFB(XrPassthroughFlagsFB passthroughFlags)
{
type = XrStructureType.XR_TYPE_PASSTHROUGH_CREATE_INFO_FB;
next = IntPtr.Zero;
flags = passthroughFlags;
}
}
[StructLayout(LayoutKind.Sequential)]
struct XrPassthroughLayerCreateInfoFB
{
private XrStructureType type;
public IntPtr next;
public XrPassthroughFB passthrough;
public XrPassthroughFlagsFB flags;
public XrPassthroughLayerPurposeFB purpose;
public XrPassthroughLayerCreateInfoFB(XrPassthroughFB passthrough, XrPassthroughFlagsFB flags, XrPassthroughLayerPurposeFB purpose)
{
type = XrStructureType.XR_TYPE_PASSTHROUGH_LAYER_CREATE_INFO_FB;
next = IntPtr.Zero;
this.passthrough = passthrough;
this.flags = flags;
this.purpose = purpose;
}
}
[StructLayout(LayoutKind.Sequential)]
struct XrPassthroughStyleFB
{
public XrStructureType type;
public IntPtr next;
public float textureOpacityFactor;
public Color edgeColor;
public XrPassthroughStyleFB(float textureOpacityFactor, Color edgeColor)
{
type = XrStructureType.XR_TYPE_PASSTHROUGH_STYLE_FB;
next = IntPtr.Zero;
this.textureOpacityFactor = textureOpacityFactor;
this.edgeColor = edgeColor;
}
}
[StructLayout(LayoutKind.Sequential)]
struct XrCompositionLayerPassthroughFB
{
public XrStructureType type;
public IntPtr next;
public XrCompositionLayerFlags flags;
public ulong space;
public XrPassthroughLayerFB layerHandle;
public XrCompositionLayerPassthroughFB(XrCompositionLayerFlags flags, XrPassthroughLayerFB layerHandle)
{
type = XrStructureType.XR_TYPE_COMPOSITION_LAYER_PASSTHROUGH_FB;
next = IntPtr.Zero;
space = 0;
this.flags = flags;
this.layerHandle = layerHandle;
}
}
delegate XrResult del_xrCreatePassthroughFB (ulong session, [In] XrPassthroughCreateInfoFB createInfo, out XrPassthroughFB outPassthrough);
delegate XrResult del_xrDestroyPassthroughFB (XrPassthroughFB passthrough);
delegate XrResult del_xrPassthroughStartFB (XrPassthroughFB passthrough);
delegate XrResult del_xrPassthroughPauseFB (XrPassthroughFB passthrough);
delegate XrResult del_xrCreatePassthroughLayerFB (ulong session, [In] XrPassthroughLayerCreateInfoFB createInfo, out XrPassthroughLayerFB outLayer);
delegate XrResult del_xrDestroyPassthroughLayerFB (XrPassthroughLayerFB layer);
delegate XrResult del_xrPassthroughLayerPauseFB (XrPassthroughLayerFB layer);
delegate XrResult del_xrPassthroughLayerResumeFB (XrPassthroughLayerFB layer);
delegate XrResult del_xrPassthroughLayerSetStyleFB(XrPassthroughLayerFB layer, [In] XrPassthroughStyleFB style);
del_xrCreatePassthroughFB xrCreatePassthroughFB;
del_xrDestroyPassthroughFB xrDestroyPassthroughFB;
del_xrPassthroughStartFB xrPassthroughStartFB;
del_xrPassthroughPauseFB xrPassthroughPauseFB;
del_xrCreatePassthroughLayerFB xrCreatePassthroughLayerFB;
del_xrDestroyPassthroughLayerFB xrDestroyPassthroughLayerFB;
del_xrPassthroughLayerPauseFB xrPassthroughLayerPauseFB;
del_xrPassthroughLayerResumeFB xrPassthroughLayerResumeFB;
del_xrPassthroughLayerSetStyleFB xrPassthroughLayerSetStyleFB;
bool LoadBindings()
{
xrCreatePassthroughFB = Backend.OpenXR.GetFunction<del_xrCreatePassthroughFB> ("xrCreatePassthroughFB");
xrDestroyPassthroughFB = Backend.OpenXR.GetFunction<del_xrDestroyPassthroughFB> ("xrDestroyPassthroughFB");
xrPassthroughStartFB = Backend.OpenXR.GetFunction<del_xrPassthroughStartFB> ("xrPassthroughStartFB");
xrPassthroughPauseFB = Backend.OpenXR.GetFunction<del_xrPassthroughPauseFB> ("xrPassthroughPauseFB");
xrCreatePassthroughLayerFB = Backend.OpenXR.GetFunction<del_xrCreatePassthroughLayerFB> ("xrCreatePassthroughLayerFB");
xrDestroyPassthroughLayerFB = Backend.OpenXR.GetFunction<del_xrDestroyPassthroughLayerFB> ("xrDestroyPassthroughLayerFB");
xrPassthroughLayerPauseFB = Backend.OpenXR.GetFunction<del_xrPassthroughLayerPauseFB> ("xrPassthroughLayerPauseFB");
xrPassthroughLayerResumeFB = Backend.OpenXR.GetFunction<del_xrPassthroughLayerResumeFB> ("xrPassthroughLayerResumeFB");
xrPassthroughLayerSetStyleFB = Backend.OpenXR.GetFunction<del_xrPassthroughLayerSetStyleFB>("xrPassthroughLayerSetStyleFB");
return
xrCreatePassthroughFB != null &&
xrDestroyPassthroughFB != null &&
xrPassthroughStartFB != null &&
xrPassthroughPauseFB != null &&
xrCreatePassthroughLayerFB != null &&
xrDestroyPassthroughLayerFB != null &&
xrPassthroughLayerPauseFB != null &&
xrPassthroughLayerResumeFB != null &&
xrPassthroughLayerSetStyleFB != null;
}
#endregion
}
}
For the latest version of this code, check out the source at:
https://github.com/StereoKit/StereoKit/blob/master/Examples/StereoKitTest/Tools/PassthroughFBExt.cs
Now we are going to tweak this code a bit to get it to fit nicely into the cross-platform app. Make the class public by adding the keyword public in line 6.
PassthroughFBExt.cs
using System;
using System.Runtime.InteropServices;
namespace StereoKit.Framework
{
public class PassthroughFBExt : IStepper
{
bool extAvailable;
bool enabled;
bool enabledPassthrough;
bool enableOnInitialize;
bool passthroughRunning;
XrPassthroughFB activePassthrough = new XrPassthroughFB();
XrPassthroughLayerFB activeLayer = new XrPassthroughLayerFB();
Color oldColor;
bool oldSky;
public bool Available => extAvailable;
public bool Enabled { get => extAvailable && enabled; set => enabled = value; }
public bool EnabledPassthrough { get => enabledPassthrough; set {
if (Available && enabledPassthrough != value) {
enabledPassthrough = value;
if ( enabledPassthrough) StartPassthrough();
if (!enabledPassthrough) EndPassthrough();
}
} }
public PassthroughFBExt() : this(true) { }
public PassthroughFBExt(bool enabled = true)
{
if (SK.IsInitialized)
Log.Err("PassthroughFBExt must be constructed before StereoKit is initialized!");
Backend.OpenXR.RequestExt("XR_FB_passthrough");
enableOnInitialize = enabled;
}
public bool Initialize()
{
extAvailable =
Backend.XRType == BackendXRType.OpenXR &&
Backend.OpenXR.ExtEnabled("XR_FB_passthrough") &&
LoadBindings();
if (enableOnInitialize)
EnabledPassthrough = true;
return true;
}
public void Step()
{
if (!EnabledPassthrough) return;
XrCompositionLayerPassthroughFB layer = new XrCompositionLayerPassthroughFB(
XrCompositionLayerFlags.BLEND_TEXTURE_SOURCE_ALPHA_BIT, activeLayer);
Backend.OpenXR.AddCompositionLayer(layer, -1);
}
public void Shutdown()
{
EnabledPassthrough = false;
}
void StartPassthrough()
{
if (!extAvailable) return;
if (passthroughRunning) return;
passthroughRunning = true;
oldColor = Renderer.ClearColor;
oldSky = Renderer.EnableSky;
XrResult result = xrCreatePassthroughFB(
Backend.OpenXR.Session,
new XrPassthroughCreateInfoFB(XrPassthroughFlagsFB.IS_RUNNING_AT_CREATION_BIT_FB),
out activePassthrough);
result = xrCreatePassthroughLayerFB(
Backend.OpenXR.Session,
new XrPassthroughLayerCreateInfoFB(activePassthrough, XrPassthroughFlagsFB.IS_RUNNING_AT_CREATION_BIT_FB, XrPassthroughLayerPurposeFB.RECONSTRUCTION_FB),
out activeLayer);
Renderer.ClearColor = Color.BlackTransparent;
Renderer.EnableSky = false;
}
void EndPassthrough()
{
if (!passthroughRunning) return;
passthroughRunning = false;
xrPassthroughPauseFB (activePassthrough);
xrDestroyPassthroughLayerFB(activeLayer);
xrDestroyPassthroughFB (activePassthrough);
Renderer.ClearColor = oldColor;
Renderer.EnableSky = oldSky;
}
#region OpenXR native bindings and types
enum XrStructureType : UInt64
{
XR_TYPE_PASSTHROUGH_CREATE_INFO_FB = 1000118001,
XR_TYPE_PASSTHROUGH_LAYER_CREATE_INFO_FB = 1000118002,
XR_TYPE_PASSTHROUGH_STYLE_FB = 1000118020,
XR_TYPE_COMPOSITION_LAYER_PASSTHROUGH_FB = 1000118003,
}
enum XrPassthroughFlagsFB : UInt64
{
None = 0,
IS_RUNNING_AT_CREATION_BIT_FB = 0x00000001
}
enum XrCompositionLayerFlags : UInt64
{
None = 0,
CORRECT_CHROMATIC_ABERRATION_BIT = 0x00000001,
BLEND_TEXTURE_SOURCE_ALPHA_BIT = 0x00000002,
UNPREMULTIPLIED_ALPHA_BIT = 0x00000004,
}
enum XrPassthroughLayerPurposeFB : UInt32
{
RECONSTRUCTION_FB = 0,
PROJECTED_FB = 1,
TRACKED_KEYBOARD_HANDS_FB = 1000203001,
MAX_ENUM_FB = 0x7FFFFFFF,
}
enum XrResult : UInt32
{
Success = 0,
}
#pragma warning disable 0169 // handle is not "used", but required for interop
struct XrPassthroughFB { ulong handle; }
struct XrPassthroughLayerFB { ulong handle; }
#pragma warning restore 0169
[StructLayout(LayoutKind.Sequential)]
struct XrPassthroughCreateInfoFB
{
private XrStructureType type;
public IntPtr next;
public XrPassthroughFlagsFB flags;
public XrPassthroughCreateInfoFB(XrPassthroughFlagsFB passthroughFlags)
{
type = XrStructureType.XR_TYPE_PASSTHROUGH_CREATE_INFO_FB;
next = IntPtr.Zero;
flags = passthroughFlags;
}
}
[StructLayout(LayoutKind.Sequential)]
struct XrPassthroughLayerCreateInfoFB
{
private XrStructureType type;
public IntPtr next;
public XrPassthroughFB passthrough;
public XrPassthroughFlagsFB flags;
public XrPassthroughLayerPurposeFB purpose;
public XrPassthroughLayerCreateInfoFB(XrPassthroughFB passthrough, XrPassthroughFlagsFB flags, XrPassthroughLayerPurposeFB purpose)
{
type = XrStructureType.XR_TYPE_PASSTHROUGH_LAYER_CREATE_INFO_FB;
next = IntPtr.Zero;
this.passthrough = passthrough;
this.flags = flags;
this.purpose = purpose;
}
}
[StructLayout(LayoutKind.Sequential)]
struct XrPassthroughStyleFB
{
public XrStructureType type;
public IntPtr next;
public float textureOpacityFactor;
public Color edgeColor;
public XrPassthroughStyleFB(float textureOpacityFactor, Color edgeColor)
{
type = XrStructureType.XR_TYPE_PASSTHROUGH_STYLE_FB;
next = IntPtr.Zero;
this.textureOpacityFactor = textureOpacityFactor;
this.edgeColor = edgeColor;
}
}
[StructLayout(LayoutKind.Sequential)]
struct XrCompositionLayerPassthroughFB
{
public XrStructureType type;
public IntPtr next;
public XrCompositionLayerFlags flags;
public ulong space;
public XrPassthroughLayerFB layerHandle;
public XrCompositionLayerPassthroughFB(XrCompositionLayerFlags flags, XrPassthroughLayerFB layerHandle)
{
type = XrStructureType.XR_TYPE_COMPOSITION_LAYER_PASSTHROUGH_FB;
next = IntPtr.Zero;
space = 0;
this.flags = flags;
this.layerHandle = layerHandle;
}
}
delegate XrResult del_xrCreatePassthroughFB (ulong session, [In] XrPassthroughCreateInfoFB createInfo, out XrPassthroughFB outPassthrough);
delegate XrResult del_xrDestroyPassthroughFB (XrPassthroughFB passthrough);
delegate XrResult del_xrPassthroughStartFB (XrPassthroughFB passthrough);
delegate XrResult del_xrPassthroughPauseFB (XrPassthroughFB passthrough);
delegate XrResult del_xrCreatePassthroughLayerFB (ulong session, [In] XrPassthroughLayerCreateInfoFB createInfo, out XrPassthroughLayerFB outLayer);
delegate XrResult del_xrDestroyPassthroughLayerFB (XrPassthroughLayerFB layer);
delegate XrResult del_xrPassthroughLayerPauseFB (XrPassthroughLayerFB layer);
delegate XrResult del_xrPassthroughLayerResumeFB (XrPassthroughLayerFB layer);
delegate XrResult del_xrPassthroughLayerSetStyleFB(XrPassthroughLayerFB layer, [In] XrPassthroughStyleFB style);
del_xrCreatePassthroughFB xrCreatePassthroughFB;
del_xrDestroyPassthroughFB xrDestroyPassthroughFB;
del_xrPassthroughStartFB xrPassthroughStartFB;
del_xrPassthroughPauseFB xrPassthroughPauseFB;
del_xrCreatePassthroughLayerFB xrCreatePassthroughLayerFB;
del_xrDestroyPassthroughLayerFB xrDestroyPassthroughLayerFB;
del_xrPassthroughLayerPauseFB xrPassthroughLayerPauseFB;
del_xrPassthroughLayerResumeFB xrPassthroughLayerResumeFB;
del_xrPassthroughLayerSetStyleFB xrPassthroughLayerSetStyleFB;
bool LoadBindings()
{
xrCreatePassthroughFB = Backend.OpenXR.GetFunction<del_xrCreatePassthroughFB> ("xrCreatePassthroughFB");
xrDestroyPassthroughFB = Backend.OpenXR.GetFunction<del_xrDestroyPassthroughFB> ("xrDestroyPassthroughFB");
xrPassthroughStartFB = Backend.OpenXR.GetFunction<del_xrPassthroughStartFB> ("xrPassthroughStartFB");
xrPassthroughPauseFB = Backend.OpenXR.GetFunction<del_xrPassthroughPauseFB> ("xrPassthroughPauseFB");
xrCreatePassthroughLayerFB = Backend.OpenXR.GetFunction<del_xrCreatePassthroughLayerFB> ("xrCreatePassthroughLayerFB");
xrDestroyPassthroughLayerFB = Backend.OpenXR.GetFunction<del_xrDestroyPassthroughLayerFB> ("xrDestroyPassthroughLayerFB");
xrPassthroughLayerPauseFB = Backend.OpenXR.GetFunction<del_xrPassthroughLayerPauseFB> ("xrPassthroughLayerPauseFB");
xrPassthroughLayerResumeFB = Backend.OpenXR.GetFunction<del_xrPassthroughLayerResumeFB> ("xrPassthroughLayerResumeFB");
xrPassthroughLayerSetStyleFB = Backend.OpenXR.GetFunction<del_xrPassthroughLayerSetStyleFB>("xrPassthroughLayerSetStyleFB");
return
xrCreatePassthroughFB != null &&
xrDestroyPassthroughFB != null &&
xrPassthroughStartFB != null &&
xrPassthroughPauseFB != null &&
xrCreatePassthroughLayerFB != null &&
xrDestroyPassthroughLayerFB != null &&
xrPassthroughLayerPauseFB != null &&
xrPassthroughLayerResumeFB != null &&
xrPassthroughLayerSetStyleFB != null;
}
#endregion
}
}
Step 2: Initialize the PassthroughFBExt stepper
Next, we’ll define an instance of the PassthroughFBExt in our App.cs file. We’ll define it in App.cs so that it will be conveniently available across the app. In the StereoKitApp/App.cs file, declare a public PassthroughFBExt field (line 14). Add the using StereoKit.Framework statement at the top of the file (line 2):
StereoKitApp/App.cs
using StereoKit;
using StereoKit.Framework;
namespace StereoKitApp
{
public class App
{
public SKSettings Settings => new SKSettings {
appName = "StereoKit Template",
assetsFolder = "Assets",
displayPreference = DisplayMode.MixedReality
};
public static PassthroughFBExt Passthrough;
Pose cubePose = new Pose(0, 0, -0.5f, Quat.Identity);
Model cube;
Matrix floorTransform = Matrix.TS(new Vec3(0, -1.5f, 0), new Vec3(30, 0.1f, 30));
Material floorMaterial;
public void Init()
{
// Create assets used by the app
cube = Model.FromMesh(
Mesh.GenerateRoundedCube(Vec3.One * 0.1f, 0.02f),
Default.MaterialUI);
floorMaterial = new Material(Shader.FromFile("floor.hlsl"));
floorMaterial.Transparency = Transparency.Blend;
}
public void Step()
{
if (SK.System.displayType == Display.Opaque)
Default.MeshCube.Draw(floorMaterial, floorTransform);
UI.Handle("Cube", ref cubePose, cube.Bounds);
cube.Draw(cubePose.ToMatrix());
}
}
}
Now we need to initialize this PassthroughFBExt object. To do that, head over to file Platforms/StereoKit_Android/MainActivity.cs. In the Task.Run method, we will initialize the object before StereoKit it initialized. Then, after StereoKit is initialized, we turn on the passthrough!
Platforms/StereoKit_Android/MainActivity.cs
Task.Run(() => {
// If the app has a constructor that takes a string array, then
// we'll use that, and pass the command line arguments into it on
// creation
Type appType = typeof(App);
app = appType.GetConstructor(new Type[] { typeof(string[]) }) != null
? (App)Activator.CreateInstance(appType, new object[] { new string[0] { } })
: (App)Activator.CreateInstance(appType);
if (app == null)
throw new System.Exception("StereoKit loader couldn't construct an instance of the App!");
// Create passthrough stepper here. MUST be done before call to SK.Initialize
App.Passthrough = SK.AddStepper(new PassthroughFBExt());
// Initialize StereoKit, and the app
SKSettings settings = app.Settings;
settings.androidActivity = activityHandle;
if (!SK.Initialize(settings))
return;
app.Init();
// Turn on the passthrough!
App.Passthrough.EnabledPassthrough = true;
// Now loop until finished, and then shut down
SK.Run(app.Step);
Android.OS.Process.KillProcess(Android.OS.Process.MyPid());
});
}
Step 3: Tweak Android Manifest
In order for our Android app to use the passthrough, we’ll need to add the feature to the android manifest. Head over to Platforms/StereoKit_Android/Properties/AndroidManifest.xml. Add this line of code to the manifest:
<uses-feature android:name="com.oculus.feature.PASSTHROUGH" android:required="true" />
Step 4: Run it!
In the Solution Explorer, right click on StereoKit_Android and select Set as Startup Project. Plug in your Quest to your computer using a USB-C cable. Click Play!
... and voilà!
Summary
To access all the code files used in this guide, check out this git repo here: https://github.com/jackdaus/StereoKitPassthroughNativeAndroid. You can clone this repository and run the completed project on your Quest!