From Brede Johansen,

"- Replaced some member attributes with local variables in Face record.
 - Multitexture support in Vertex class.
 - Renamed VertexList to VertexListRecord (VertexList is now a Vertex array)
 - new Mesh (with reserved field at offset 12, thanks to Paul Martz)
 - new LocalVertexPool
 - new MeshPrimitive
 - Use ProxyNode for externals.
 - Local cache for externals"

src/osgPlugins/OpenFlight/Vertex.cpp

@@ -13,43 +13,50 @@ Vertex::Vertex():
     _color(1,1,1,1),
     _normal(0,0,1),
     _validColor(false),
-    _validNormal(false),
-    _validUV(false)
+    _validNormal(false)
 {
+    for (int layer=0; layer<MAX_LAYERS; layer++)
+        _validUV[layer] = false;
 }
 
 Vertex::Vertex(const Vertex& vertex):
     _coord(vertex._coord),
     _color(vertex._color),
     _normal(vertex._normal),
-    _uv(vertex._uv),
     _validColor(vertex._validColor),
-    _validNormal(vertex._validNormal),
-    _validUV(vertex._validUV)
+    _validNormal(vertex._validNormal)
 {
+    for (int layer=0; layer<MAX_LAYERS; layer++)
+    {
+        _uv[layer] = vertex._uv[layer];
+        _validUV[layer] = vertex._validUV[layer];
+    }
 }
 
-void Vertex::setCoord(osg::Vec3 coord)
+void Vertex::setCoord(const osg::Vec3 coord)
 {
     _coord = coord;
 }
 
-void Vertex::setColor(osg::Vec4 color)
+void Vertex::setColor(const osg::Vec4 color)
 {
     _color = color;
     _validColor = true;
 }
 
-void Vertex::setNormal(osg::Vec3 normal)
+void Vertex::setNormal(const osg::Vec3 normal)
 {
     _normal = normal;
     _validNormal = true;
 }
 
-void Vertex::setUV(osg::Vec2 uv)
+void Vertex::setUV(int layer, const osg::Vec2 uv)
 {
-    _uv = uv;
-    _validUV = true;
+    if (layer>=0 && layer<MAX_LAYERS)
+    {
+        _uv[layer] = uv;
+        _validUV[layer] = true;
+    }
 }