Virtual Reality in the High Definition Render Pipeline

To use Virtual Reality (VR) in the High Definition Render Pipeline (HDRP), you must enable VR in your Unity Project. To do this, see the VR tab in the Render Pipeline Wizard.

HDRP has been designed to fully support Single-Pass Instanced mode. This mode gives you the best performance on all platforms. HDRP also supports multi-pass but this is slower and some features, like Auto-Exposure, can cause issues. If you encounter an issue with a specific feature, you can disable it in your Project’s HDRP Asset.

Supported Platforms and Devices

  • PC with DX11:
    • Oculus Rift
    • OpenVR
    • Windows Mixed Reality
  • PS4:
    • PSVR

Resolution Control

There are multiple methods that you can use to control the resolution of your render targets in HDRP, but be aware that HDRP does not support every method available in standard Unity using the built-in render pipeline. XRSettings.renderViewportScale has no effect in HDRP and generates a warning if you use it. Use one of the following methods instead:

  • Dynamic Resolution: You can use the dynamic resolution system to change the resolution at runtime. This is the best method to use if you want to change the resolution at runtime.
  • Eye Texture: You can set the device back-buffer resolution by changing XRSettings.eyeTextureResolutionScale. This is a resource intensive operation that reallocates all render targets.

C# defines

You can use the following defines to include or exclude code from your scripts.