The state of Distance Field GI in 4.8

[John_Alcatraz]

@John Alcatraz;310614

Another thing I wonder about is how can we enable Heightfield GI but disable DFGI? If I don’t specify r.DistanceFieldGI = 1 in the ConsoleVariables.ini then DFGI is disabled but HeightfieldGI also is disabled.

@DanielW;314003

Yes. There are three cvars:
r.DistanceFieldGI - must be enabled for either feature to work, defaults to off
r.VPLMeshGlobalIllumination - must be enabled for surfel GI, defaults to on
r.HeightfieldGlobalIllumination - must be enabled for heightfield GI, defaults to on

So you can get heightfield GI but not surfel GI by using
r.DistanceFieldGI=1
r.VPLMeshGlobalIllumination=0

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