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Fog experts> minimal setup for ExponentialHeightFog

[FONT=Lucida Sans Unicode]Have spent several hours testing, and also read the documentation
https://dq8iqaixvew1d.cloudfront.net…Fog/index.html

Yet still a couple questions.

  1. [FONT=Lucida Sans Unicode]Is it possible to create a fog effect by simply having a Directional Light (with value>0 for Volumetric Scattering Intensity) and ExponentialHeightFog actor (with Volumetric Fog disabled)? Or is it ALWAYS necessary to enable the Volumetric Fog option on ExponentialHeightFog?
  2. [FONT=Lucida Sans Unicode]When Volumetric Fog is enabled, is it necessary to use a Sky Light (set to Stationary) in order for your fog to be affected by GI? My understanding is that the Sky Light when baking will transfer the light information to your Volumetric Lightmaps (I still think of them as Light Probes coming from Unity) Your fog then uses this transferred light information.

[FONT=Lucida Sans Unicode]Any feedback appreciated!