Blender 3DS export.

Greetings.

I have in issue with exporting models from blender to 3ds files. Seems that I`m loosing normals.

I have a program that uses DirecX. Im loading 3d models in it in .X files. Models are made in 2 programs - SketchUp and Blender, after compliting I export models to .3DS and after that Im using Microsoft Windows ConvertX Utility (conv3ds) to make an .X from .3DS.
After loading .Xs to program it seems that models from Blender loose their normals. I cant use light sources at all. Models just ignore them. Files from SketchUP are correct, and work with light sources ok. I have checked .X files in text editor and yes - .X that was made from Blender .3DS misses any info about normals. It`s info ends after material data.

Ive copy-pasted normals data from SketchUP->3DS->X file and mine broken mesh begin to work with light too, but all faces were messed up cause of different vertex data, so just copy-paste dont work properly.

Also Ive exported Blender Mesh to .OBJ and checked it in text editor - normal data (vns) was there.

I have searched google a lot but haven`t found any info about it. Any help will be appreciated.

Any ideas? :slight_smile:

I have found a solution. Its not so good as it can be, but it works. I have exported model from blender in .OBJ with all normals included, then Ive used Wings3D. Dont know if links are accepted here, but you can easely google it. Import OBJ to Wings3D then export it to X (Wings have this option) and used X in my program. Normals were there, lights are working! Unfortunatelly export to 3ds seems not working OK in blender and I havent found any info about it.