Updated 1.4 to resolve some issues when importing models with multiple materials on them.
Latest 1.4.1
https://sites.google.com/site/bitcpy/do ... sion-1.4.1
@minmay
Thanks for finding the model import issue, I had made a small mistake when assigning materials to faces on models with multiple materials on them.
I fixed the issue and uploaded a new version, 1.4.1 should work fine.
For the plant model, I'm a bit unsure what to do, maybe make sure Blender doesn't alter the normals when importing (was supprised that it actually did).
From what I can tell by looking at the model it appears the artists has used smoothed normals on the grass planes through transfered normal attributes.
It's a good trick when working with planes, but I'm not sure Blender can actually do that out of the box since it would require the user to be able to lock the normals or apply vertex-normal maps.
Works really well with short hair on faces as well as you would simply transfer the vertex normals from the mesh below onto the hair planes.
I know I seen some better articles on it but this page from polycount does a fairly good job at describing the effect.
It also shows how to do it in Maya, Modo or Max.
http://wiki.polycount.com/wiki/VertexNormal