It appears that when using GPU Lightmass for light baking, Distance Field Indirect Shadows (DFIS) are not functioning correctly—shadows are completely missing. However, after switching to CPU Lightmass, DFIS works as expected.
Is this feature not supported by GPU Lightmass? Could it be related to Volumetric Lightmaps? Are there any known issues with Volumetric Lightmaps when using GPU Lightmass?
Any help would be greatly appreciated!
Interestingly, everything works perfectly when using Luoshuang’s GPULightmass, a feature developed by a single person back in 2018! 
1 Like
for me i have the opposite issue, DFIS just doesnt work at all with CPU lightmass because it seems the final output of it doesnt match the size of the viewport