# Depth Mesh

Depth mesh is the creation of triangle-based meshes surfaces detected by Nreal Light. The mesh is used for real-time occlusion rendering and for collision detection with digital content. Unlike Plane Detection, which only detects planar surfaces, Meshing can detect a variety of surfaces.

## Capabilities

Depth mesh expands many AR capabilities.

* **Visualization**: Provide visual feedback as users scan their environment.
* **Occlusion**: Hide virtual objects behind real ones, especially in larger outdoor environments where Depth-based Occlusion may not be practical.
* **Physics**: With the help of <mark style="color:purple;">MeshCollider</mark>s, virtual objects and characters interact with the environment and real objects.
* **Procedural Object Placement**: Populate the AR world with more flexibility than Plane Detection.

## Best Practice

The mesh quality depends on the image texture, related to the scene material, lighting, motion speed, etc.

**Good quality**:

* Uniform illumination
* Move smoothly and slowly
* Highly textured surfaces: carpets, wallpapers, wood floors
* The appropriate range of distances: 0.5m to 3m

**Poor quality**:

* Moving objects
* Dark environments
* Transparent/Semi-transparent or reflective surfaces
* Thin objects: chair legs, fences
* Textureless surface: white walls, painted desktop

## **Device compatibility**

Depth Mesh has been fully tested on the following Android phones:

* OnePlus: 7T / 9
* SONY: Xperia 5iii
* OPPO: Find X2 / Find x3 Pro
* HUAWEI: P30 / Mate40Pro
* LG: VELVET / V50s / G900N / style&#x20;
* SAMSUNG: Galaxy Note20Ultra / Galaxy Note20 / Galaxy S21 5G / Galaxy Z Fold3 5G / Galaxy S20 Ultra

Depth Mesh can also run on devices besides the above, the stability however is not guaranteed. For the complete compatibility list, please refer to[ Device Compatibility](https://xreal.gitbook.io/nrsdk/v1.10.2/nrsdk-fundamentals/xreal-devices/compatibility).