# Stereo rendering

> Understand stereo rendering for XR platforms.

VR and most MR devices require rendering the Unity scene in stereo. Unity XR supports multi-pass and single-pass stereo rendering, which both have different performance benefits.

| **Topic**                                                                                                                              | **Description**                                                                    |
| -------------------------------------------------------------------------------------------------------------------------------------- | ---------------------------------------------------------------------------------- |
| **[Introduction to stereo rendering](/engine/6000.5/manual/xr/graphics/stereo-rendering/single-pass-stereo-rendering.md)**             | Compare multi-pass and single-pass instanced modes and configure your XR provider. |
| **[Single-pass instanced rendering and custom shaders](/engine/6000.5/manual/xr/graphics/stereo-rendering/single-pass-instancing.md)** | Update custom shaders to support single-pass stereo instanced rendering.           |

## Additional resources

* [Multiview Render Regions](/engine/6000.5/manual/xr/graphics/multiview-render-regions.md)
* [VR frame timing](/engine/6000.5/manual/xr/graphics/vrframe-timing.md)