adding support to store all the layered textures

code/FBXMaterial.cpp

@@ -227,7 +227,6 @@ Texture::~Texture()
 
 LayeredTexture::LayeredTexture(uint64_t id, const Element& element, const Document& /*doc*/, const std::string& name)
 : Object(id,element,name)
-,texture(0)
 ,blendMode(BlendMode_Modulate)
 ,alpha(1)
 {
@@ -249,7 +248,7 @@ LayeredTexture::LayeredTexture(uint64_t id, const Element& element, const Docume
 
 LayeredTexture::~LayeredTexture()
 {
-
+    
 }
 
 void LayeredTexture::fillTexture(const Document& doc)
@@ -267,7 +266,7 @@ void LayeredTexture::fillTexture(const Document& doc)
 
         const Texture* const tex = dynamic_cast<const Texture*>(ob);
 
-        texture = tex;
+        textures.push_back(tex);
     }
 }