Fixed Foveated Rendering

Set the FFR Level

There are multiple ways to set the FFR level. FFR level is one of the following values:

  • FFR Off (index = 0): No reduction of resolution. (Default)
  • FFR Low (index = 1): The lowest level of resolution reduction.
  • FFR Medium (index = 2): The medium level of resolution reduction.
  • FFR High (index = 3): High level of resolution reduction.
  • FFR High Top (index = 4): The highest level of resolution reduction. Provides more detail near the bottom of the view and more foveation near the top.

Project Settings

You can set the FFR level in your Unreal project settings. To access these settings:

  • In Unreal go to Edit > Project Settings > Plugins > YVR OpenXR.

  • Use the FFRlevel to set the desired foveation level.

    FFRLevel

API to Set FFR

You can set the level of FFR to any the following indexes using the following method:

void UYvrFunctionLibrary::SetFixedFoveatedRenderingLevel(EFixedFoveatedRenderingLevel level)

Blueprints to Get and Set the FFR Level

You can get and set the FFR level using the following blueprints:

GetFixedFoveatedRenderingLevel

SetFixedFoveatedRenderingLevel

Note

Currently only support this feature with both OpenGLES and Multi-View enabled.

Dynamic Fixed Foveated Rendering

Under settings, check Dynamic FFR, the system will dynamically adapt the level of foveation based on current GPU utilization

DynamicFFR