hey, facing similar problem , can anyone provide the working procedure to compile vtk with direct x including the libs or dll files to be moved. regards -- View this message in context: http://vtk.1045678.n5.nabble.com/about-the-vtkGPUVolumeRayCastMapper-tp5521644p5713731.html Sent from the VTK - Users mailing list archive at Nabble.com.