Hi, I do not have experience with transparency, but I saw following detial example+article that could be helpfull.<div><a href="http://www.vtk.org/Wiki/VTK/Examples/Cxx/Visualization/CorrectlyRenderingTranslucentGeometry">http://www.vtk.org/Wiki/VTK/Examples/Cxx/Visualization/CorrectlyRenderingTranslucentGeometry</a><br>
<div><br></div></div><div>Jana</div>