[4.7.2] generate lightmap uvs

pragmascript · March 4, 2015, 10:36pm

I’m using UE 4.7.2 and im trying to import an FBX file with currently only one UV channel and get Unreal to autogenerate the 2nd UV channel with the lightmap data.

However no matter how i change the import settings i can’t seem to get unreal to generate the 2nd UV channel with the lightmap data. (bGenerateLightmapUVs is checked)

i have attached the file for the case the bug is specific to this FBX.

https://dl.dropboxusercontent.com/u/13427506/OP_VE_15_03_04.fbx

Jacky · March 4, 2015, 11:09pm

Have you tried generating UV’s in static mesh editor after you import the mesh?

pragmascript · March 4, 2015, 11:30pm

yes, I changed the build settings in the static mesh editor but that didn’t have any effect sadly. (generate lightmap UVs source lightmap index and destination lightmap index). The static mesh editor only displays one UV channel (UV Channel 0).

Lovecraft_K · March 5, 2015, 10:04pm

Hey pragmascript -

Your Min Lightmap Resolution is set by default to low for such a massive asset. You can increase the Min Lightmap Resolution to 256 with Generate Lightmap UVs set to True and Apply Changes and you will get your second UV Channel.

Thank You

Eric Ketchum

pragmascript · March 6, 2015, 11:34am

Thanks that worked.

anonymous_user_a07add701 · May 11, 2016, 2:44pm

thanks for this!!!