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Enlighten UE4 3.12 Documentation
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  • Welcome to Enlighten
  • How Enlighten works
  • Install and build
  • Beginner tutorials
  • From static to dynamic lighting
  • How actors interact with Enlighten
  • Lightmap lighting
  • Probe lighting
  • Local reflections
  • Change the lighting resolution
  • World properties
  • Level properties
  • Precompute your level
  • Enlighten light properties
  • Light reflected from the sky
  • Material properties
  • Light volumetric fog
  • Turn off Enlighten updates in game
  • Mesh destruction
  • LOD for lighting
  • Real-world sun/sky intensity
  • Collaborate on a level
  • Reserved texture samplers
  • Visualizations and statistics
  • Debug with Enlighten tools
  • Convert to vanilla UE4
  • Troubleshooting and support
  • Third-party licences
  • Release notes
    Calendars
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Light volumetric fog

    This is the documentation for Enlighten.

    Light volumetric fog

    Dec 22, 2020

    Enlighten provides real time indirect lighting for volumetric fog by sampling per-pixel from nearby probes.

    Refer to the UE4 documentation for an overview of the volumetric vog feature.

    Enable Enlighten indirect lighting

    To enable Enlighten real time indirect lighting for Volumetric Fog:

    • In your project settings, enable per-pixel sampling. Refer to the Probe sampling page for instructions.
    • Place volumetric fog in your level. For details, please refer to the UE4 documentation. 

    • Place Enlighten Adaptive Probe Volume actors to cover all areas where fog is visible. (Refer to the Probes placement page).

      If volumetric fog is visible across the entire world, this might result in a very large number of probes.
      To avoid this, reduce the Adaptive Probe Resolution. Please refer to Change the lighting resolution for information.

    Control the intensity

    To adjust the intensity of Enlighten indirect lighting, modify the Enlighten world property Volumetric Fog Scattering Boost.

    To exaggerate the effect of Enlighten indirect lighting, choose a larger value. A value of zero completely disables Enlighten indirect lighting for all fog.



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