Now I’ve got a scene in UE5 and UE4,and the requirement it to match the GI of lumen with Ue4’s lightmass,any trick or suggestion?
Since Lightmass is an offline baker, I suppose you should get pretty similar, if not better, results. It will be quite some fiddeling, though, I guess. Lumen gives you everything instantly, while Lightmass might need quite some iterations until it looks the way you want.
True,therotically lightmass should do better in lightmap way,but how abt only using VLM instead of lightmap.And neither way of lightmass can not result in strong AO effect like Lumen does,any suggestion?
VLM is almost always the better option (compared to Sparse Volume Lightmap). It allows for movable objects to be lit by the lightmap and has skylight occlusion support. You can enable AO baking in the world settings if you want to overcompensate. But keep in mind, that this AO can often lead to very dark areas in your scenes.