Not sure about gamespace maybe someone can reply that use's it.
In truespace after you select direct x as a export click the settings button bottom right of the window if you have the settings choices avalible like the photo above you can export the materials.
You will end up with a model and new copys of all the material images exported along with it.
Your model will also need something simular to this
MeshMaterialList {
1;
12;
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0;;
Material Cube_1Material_0_0 {
0.000000; 0.000000; 0.000000; 1.000000;;
44.000000;
0.100000; 0.100000; 0.100000;;
0.000000; 0.000000; 0.000000;;
TextureFilename {
"grass1.png";
if you open your .x model with notepad you can check to see if the material data has been exported out or not.
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