Unreal Scene sample

Updated: May 11, 2026

Overview

Deprecated: This sample has been replaced by Unreal-MRUtilityKitSample⁠.

The Unreal Scene sample is a Blueprint-only project with a single level (BouncingBall) that demonstrates Scene Anchor population from the Scene Model, passthrough with an opacity slider, stereo layer UI, ball throwing with occlusion detection (line-trace, red/gray material switch), 48000 Hz audio, and entity type filtering (walls, ceilings, floors, etc.).

View the sample source code on GitHub⁠.

What you will learn

Scene Anchor population from Scene Model

Passthrough rendering with opacity control

Stereo layer UI implementation

Occlusion detection via line-trace

Entity type filtering for spatial elements

Requirements

Meta Quest 2, Quest 3, or Quest 3S

UE development environment

Get started

Clone the repository.

Open the project in Unreal Engine.

Deploy to your Quest device.

Ensure Room Setup has been completed on the device.

Explore the sample

File / Scene	What it demonstrates	Key concepts
BouncingBall level	Complete Scene API demo	Scene Anchors, passthrough, occlusion
Scene Anchor population	Loading spatial data	Scene Model query and anchor creation
Passthrough system	Mixed reality rendering	Opacity slider, passthrough layer
Ball throwing	Physics interaction	Line-trace occlusion, red/gray material switch
Stereo layer UI	Interface rendering	Stereo layer composition
Entity type filtering	Spatial classification	Walls, ceilings, floors, furniture filtering

Runtime behavior

The BouncingBall level loads Scene Anchors from the Scene Model and renders passthrough with an adjustable opacity slider. Users can throw balls that interact with the physical environment. Occlusion is detected via line-trace, switching ball materials between red (visible) and gray (occluded). Audio plays at 48000 Hz. Entity types can be filtered to show only specific spatial elements.

Key concepts

Scene Anchor population

Scene Anchors are populated from the Scene Model, providing spatial data about the user’s physical environment including walls, ceilings, floors, and furniture.