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How to Auto-Generate Lightmaps for my Blender model?

SPOILER: Im new to Game development and 3-d modelling so be patient with me :P

So the meshes i made in blender when exported to unreal, were becoming "black" in color when i built the lighting. The problem i found was that i wasnt addding any lightmaps to my mesh. (i had no idea what a ligthmap is) I searched around the net to find out how to make/add light map to my mesh and found the solution on how to do it in blender. But i also found another video: https://www.youtube.com/watch?v=UnUn4nRoh-E in which unreal can auto-generate lightmaps for your meshes at the time of import

Here is my test mesh alt text

When i import this mesh into unreal as an fbx i get the import menu in which there is a ticked checkbox that says "Generate Lightmap UV's": alt text

But the mesh still doesnt have any lightmaps and still gets dark when i build the lighting, however it worked for the guy in the video (unreal auto-generated lightmaps for his mesh): Here is a SS of the blank lightmaps for my test mesh after exporting to unreal(both the channels, 0 and 1 are blank): alt text

What am i missing here? how do i make unreal auto generate lightmaps for my blender mesh NOTE: no extra settings have been made for the blender mesh, i just opened it and extruded the faces of the cube in random directions and exported it as fbx Thanks for sparing time to read! i would really appreciate some help asap

Product Version: UE 4.10
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asked Feb 03 '16 at 10:28 AM in Using UE4

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I think you forget create UV0 in Blender. The geometry that you want to import into UE4 should contain UV0.

Use this tutorial for create UV0 in Blender.

Blender 2.7 Tutorial #13 : UV Mapping (Unwrapping for Image Textures)

And try again to import the corrected model.

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answered Feb 03 '16 at 01:16 PM

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