Functionnality break in handling transparency of vtkContextItem vtkContextActor vtkContext2D
This issue was created automatically from an original Mantis Issue. Further discussion may take place here.
Hi,
In PCL (www.pointclouds.org), we have several structures that inherit from vtkContextItem that we add to the scene per user request (circle, rectangle, image...) using a vtkContextActor through: vtkSmartPointer new_actor = vtkSmartPointer::New (); new_actor->GetScene ()->AddItem (some_item);
They used to work perfectly with vtk-5.8 with a transparent actor and only the shape opaque. Without changing any code in our side but just building against vtk-5.10.1 the transparency is not there anymore, there is black shade and the shape drawn upon it.
I am attaching screen shots of the visual result with both vtk-5.8 and vtk-5.10 so that you can notice the difference yourself. Results were obtained on a ubuntu precise I have no clue on how this can be fixed from our side or yours but I would appreciate your help to get back 5.8 results.
Cheers,
Nizar