I'm currently using a simple textured cube exported from Blender (2.58a) to 3ds to render a sample scene. But when two cubes are rendered side by side there is a clear light intensity step between them, probably because each vertex has only one normal vector that is shared between the faces. So the cube is lighted more like a sphere than a cube. I already have split the cube in Blender to not share the vertices between faces, but the appearance stays the same. Only if I separate the edges a little bit the faces look shaded correctly, but of course I don't want the gaps.

I assume that the vertex sharing of jPCT gets in the way here. Is there a way around this? I also read in the description of the 3ds format that faces can belong to "smoothing groups". I assume that faces not sharing any smoothing group should have a sharp edge between them. Does jPCT support this feature? (But I don't even know if the export filter of Blender uses this feature.)

Regards,
Uwe