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Blender Static Mesh turns "BLACK" after building Lighting

( The Light_Map_Res is "128" and the Light_Map_Coord_Res is "1" )

"LightMapRes 115 does not work either"

I Imported from blender. Other than changing the values LightMapRes & LightMapCoordIndex, How do I stop the Static Mesh from turning black after I build Lighting?

Product Version: UE 4.15
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asked Feb 16 '18 at 11:06 PM in Using UE4

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Did you make your own lightmap (2nd uv on your mesh) or you let Unreal to generate it? (to be sure which channel to use for lightmap) There is another possibility that your faces are flipped...

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answered Feb 16 '18 at 11:27 PM

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avatar image ThompsonN13 Feb 16 '18 at 11:36 PM

it wouldnt be normals in this case or as you say flipped faces. if you have inverted normals in unreal they just dont get rendered.

avatar image Jacob9moon00 Feb 17 '18 at 12:26 AM

I see, How would I fix this?

avatar image Jacob9moon00 Feb 17 '18 at 02:02 AM

I inverted the Normals/Faces in blnder and imported it, but I could just see through part of it and it was still black after Building the lighting. I messed around with the settings and importing stuff. I really have no clue on how to fix this.

avatar image Makigirl Feb 17 '18 at 03:05 AM

You should see face orientation in Blender I guess... Do you have 2 uv channels? Is the correct one (lightmap uv channel) is set as Ligth Map Coord Index?

avatar image Jacob9moon00 Feb 17 '18 at 03:09 AM

I figured it out. mybad. When exporting in blender. Mesh was not the only thing selected. It automatically selected everything. Thank you for your help though

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