Ensure that the background is rendered behind the text.
Ensure that the background is rendered behind the text.

For GL2PS vtkTextActor3D exports. Should fix #15345:

http://vtk.org/Bug/view.php?id=15345

sumedhasingla/VTK,SimVascular/VTK,mspark93/VTK,gram526/VTK,jmerkow/VTK,gram526/VTK,keithroe/vtkoptix,keithroe/vtkoptix,jmerkow/VTK,SimVascular/VTK,mspark93/VTK,SimVascular/VTK,gram526/VTK,msmolens/VTK,sumedhasingla/VTK,demarle/VTK,msmolens/VTK,sankhesh/VTK,mspark93/VTK,sumedhasingla/VTK,keithroe/vtkoptix,SimVascular/VTK,gram526/VTK,jmerkow/VTK,sankhesh/VTK,sumedhasingla/VTK,sankhesh/VTK,jmerkow/VTK,jmerkow/VTK,sumedhasingla/VTK,demarle/VTK,sankhesh/VTK,keithroe/vtkoptix,jmerkow/VTK,candy7393/VTK,jmerkow/VTK,keithroe/vtkoptix,gram526/VTK,sumedhasingla/VTK,gram526/VTK,demarle/VTK,SimVascular/VTK,SimVascular/VTK,candy7393/VTK,mspark93/VTK,mspark93/VTK,jmerkow/VTK,SimVascular/VTK,keithroe/vtkoptix,demarle/VTK,keithroe/vtkoptix,sumedhasingla/VTK,mspark93/VTK,candy7393/VTK,msmolens/VTK,demarle/VTK,keithroe/vtkoptix,mspark93/VTK,candy7393/VTK,msmolens/VTK,msmolens/VTK,candy7393/VTK,candy7393/VTK,sankhesh/VTK,mspark93/VTK,demarle/VTK,candy7393/VTK,msmolens/VTK,demarle/VTK,gram526/VTK,sankhesh/VTK,gram526/VTK,msmolens/VTK,sankhesh/VTK,sankhesh/VTK,candy7393/VTK,msmolens/VTK,SimVascular/VTK,demarle/VTK,sumedhasingla/VTK