In UE 4.14 when lightmaps are built from commandline using:
UE4Editor-cmd.exe ProjectName -run=resavepackages -buildlighting -allowcommandletrendering -map=MapName
only the *.umap files are saved afterwards, while the *_BuiltData.uasset files are not saved (and they contain lightmap data ;))
this does not happend while using UE4Editor.exe ProjectName -run=resavepackages -buildlighting -allowcommandletrendering -map=MapName
but I prefer the first one …
Actually, this is still an issue internally as well. Sorry about that.
There still isn’t a ticket but the change was fixed in CL-3252784 on January 10th. I’ll see if we can get this change put into the 4.15 release but I cannot guarantee it. If not, it looks like it’ll be in 4.16 at the earliest.
Hi,
I tested with 4.15 preview 3. With some simple scenes engine finishes building, but _BuiltData files are saved not in .uasset but in .umap. If I rename all _BuiltData.umap files to _BuiltData.uasset, the result becomes as expected. I hope this bug will also be fixed soon. Followings are a part of the log:
[2017.02.07-11.11.37:276][ 0]LogTexture:Display: Building textures: HQ_Lightmap0_1 (AutoDXT)
[2017.02.07-11.11.37:276][ 0]LogTexture:Display: Building textures: LQ_Lightmap_0_1 (DXT1)
[2017.02.07-11.11.37:276][ 0]LogTexture:Display: Building textures: ShadowMapTexture2D_0 (BGRA8)
[2017.02.07-11.11.38:873][ 0]LogTexture:Display: Building textures: HQ_Lightmap0_1 (AutoDXT)
[2017.02.07-11.11.38:873][ 0]LogTexture:Display: Building textures: LQ_Lightmap_0_1 (DXT1)
[2017.02.07-11.11.39:348][ 0]LogSavePackage:Display: Finished SavePackage ../../../../../../Users/user/Documents/Unreal Projects/Simple/Content/Untitled_BuiltData.umap
[2017.02.07-11.11.39:358][ 0]LogSavePackage:Display: Finished SavePackage ../../../../../../Users/user/Documents/Unreal Projects/Simple/Content/Lights.umap
[2017.02.07-11.11.39:373][ 0]LogSavePackage:Display: Finished SavePackage ../../../../../../Users/user/Documents/Unreal Projects/Simple/Content/Lights_BuiltData.umap