From: Mikko Rasa <tdb@tdb.fi>
Date: Mon, 5 May 2014 19:27:07 +0000 (+0300)
Subject: Some fixes to UV coordinate exporting
X-Git-Url: http://git.tdb.fi/?a=commitdiff_plain;h=53b63b5ed79badaf9f7b79bbe59d6fc7dd3612c9;p=libs%2Fgl.git

Some fixes to UV coordinate exporting
---

diff --git a/blender/io_mspgl/export_mesh.py b/blender/io_mspgl/export_mesh.py
index c1dd2ac0..39bf87b5 100644
--- a/blender/io_mspgl/export_mesh.py
+++ b/blender/io_mspgl/export_mesh.py
@@ -243,13 +243,20 @@ class MeshExporter:
 			mesh.generate_material_uv()
 
 		texunits = []
-		if mesh.uv_layers and self.export_uv!="NONE":
+		force_unit0 = False
+		if mesh.uv_layers and (self.export_uv!="NONE" or self.material_tex):
 			# Figure out which UV layers to export
-			if self.export_uv=="UNIT0":
-				if mesh.uv_layers[0].unit==0:
-					texunits = [0]
-			else:
+			if self.export_uv=="ALL":
 				texunits = range(len(mesh.uv_layers))
+			elif self.material_tex:
+				# The material UV layer is always the last one
+				texunits = [len(mesh.uv_layers)-1]
+				force_unit0 = True
+			else:
+				for i, u in enumerate(mesh.uv_layers):
+					if u.unit==0:
+						texunits = [i]
+						break
 			texunits = [(i, mesh.uv_layers[i]) for i in texunits]
 			texunits = [u for u in texunits if not u[1].hidden]
 
@@ -285,7 +292,7 @@ class MeshExporter:
 		fmt = ["NORMAL3"]
 		if texunits:
 			for i, u in texunits:
-				if u.unit==0:
+				if u.unit==0 or force_unit0:
 					fmt.append("TEXCOORD2")
 				else:
 					fmt.append("TEXCOORD2_%d"%u.unit)
@@ -296,7 +303,7 @@ class MeshExporter:
 		fmt.append("VERTEX3")
 		out_file.begin("vertices", *fmt)
 		normal = None
-		uvs = [None]*len(texunits)
+		uvs = [None]*(max(u[0] for u in texunits)+1)
 		tan = None
 		bino = None
 		group = None
@@ -306,7 +313,7 @@ class MeshExporter:
 				normal = v.normal
 			for i, u in texunits:
 				if v.uvs[i]!=uvs[i]:
-					if u.unit==0:
+					if u.unit==0 or force_unit0:
 						out_file.write("texcoord2", *v.uvs[i])
 					else:
 						out_file.write("multitexcoord2", u.unit, *v.uvs[i])