bind buffers

WFObj.cc

@@ -549,6 +549,8 @@ void WFObj::draw()
 {
     if (!m_valid)
         return;
+    glBindBuffer(GL_ARRAY_BUFFER, m_data_vbo);
+    glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, m_index_vbo);
     for (map<string, vector<Face> >::iterator it = m_faces.begin();
             it != m_faces.end();
             it++)