X-Git-Url: http://git.tdb.fi/?p=libs%2Fgl.git;a=blobdiff_plain;f=blender%2Fio_mesh_mspgl%2Fexport_mspgl.py;h=d54d1e38478a860c5b4619deb9d8505813f3c53f;hp=e2082cb8d04770b1b4c510eaca90c4797114afcc;hb=2298b92eddff337760561b12311d1f4e82745486;hpb=fc503f2996e663e6bea88d95e4b251dd87428161

diff --git a/blender/io_mesh_mspgl/export_mspgl.py b/blender/io_mesh_mspgl/export_mspgl.py
index e2082cb8..d54d1e38 100644
--- a/blender/io_mesh_mspgl/export_mspgl.py
+++ b/blender/io_mesh_mspgl/export_mspgl.py
@@ -256,13 +256,22 @@ class Exporter:
 			else:
 				texunits = list(range(len(mesh.uv_textures)))
 
+			tbn_unit = 0
+			if self.tbn_vecs:
+				uvtex_names = [u.name for u in mesh.uv_textures]
+				if self.tbn_uvtex in uvtex_names:
+					tbn_unit = uvtex_names.index(uvtex)
+					del texunits[tbn_unit]
+					texunits.insert(0, tbn_unit)
+
 			for i in texunits:
 				progress.set_task("Splitting UVs", 0.35+0.3*i/len(texunits), 0.35+0.3*(i+1)/len(texunits))
 				mesh.split_uv(i, progress)
+				if self.tbn_vecs and i==tbn_unit:
+					mesh.compute_uv()
+					mesh.compute_tbn(i)
 
 			mesh.compute_uv()
-			if self.tbn_vecs:
-				mesh.compute_tbn(self.tbn_uvtex)
 
 		strips = []
 		loose = mesh.faces