The first one, the default. I've built VTK with default options. Did not try VTK_RENDERING_BACKEND OpenGL2. -- View this message in context: http://vtk.1045678.n5.nabble.com/TEXTURE-BUFFER-fails-pure-OpenGL-vs-vtkgl-tp5731938p5731960.html Sent from the VTK - Users mailing list archive at Nabble.com.