I am trying to write a program where several threads are running, each with their own self-contained
vtkRenderer, pipeline, etc. If I don’t mix any VTK objects between threads, is this possible and/or safe?
https://vtk.org/Wiki/VTK/FAQ#Is_VTK_thread-safe_.3F seems to indicate this is not.
Also, note that most of the OpenGL libraries are not thread-safe. Therefore, if you are rendering to multiple render windows from different threads, you are likely to get in trouble, even if you have mutex locks around the render calls.
Is this still accurate? If so, in which way could I achieve the closest approximation of this?