ENH: Add a new test that will test multitexturing using a shader.
ENH: Add a new test that will test multitexturing using a shader.

keithroe/vtkoptix,candy7393/VTK,berendkleinhaneveld/VTK,biddisco/VTK,gram526/VTK,demarle/VTK,hendradarwin/VTK,sankhesh/VTK,arnaudgelas/VTK,spthaolt/VTK,collects/VTK,sumedhasingla/VTK,biddisco/VTK,daviddoria/PointGraphsPhase1,msmolens/VTK,ashray/VTK-EVM,Wuteyan/VTK,sumedhasingla/VTK,candy7393/VTK,sumedhasingla/VTK,ashray/VTK-EVM,sankhesh/VTK,jmerkow/VTK,msmolens/VTK,msmolens/VTK,mspark93/VTK,naucoin/VTKSlicerWidgets,sankhesh/VTK,demarle/VTK,keithroe/vtkoptix,mspark93/VTK,msmolens/VTK,spthaolt/VTK,berendkleinhaneveld/VTK,keithroe/vtkoptix,SimVascular/VTK,daviddoria/PointGraphsPhase1,berendkleinhaneveld/VTK,keithroe/vtkoptix,spthaolt/VTK,SimVascular/VTK,hendradarwin/VTK,aashish24/VTK-old,sumedhasingla/VTK,ashray/VTK-EVM,collects/VTK,candy7393/VTK,berendkleinhaneveld/VTK,mspark93/VTK,jmerkow/VTK,jmerkow/VTK,ashray/VTK-EVM,jmerkow/VTK,ashray/VTK-EVM,johnkit/vtk-dev,sumedhasingla/VTK,jmerkow/VTK,Wuteyan/VTK,gram526/VTK,keithroe/vtkoptix,jeffbaumes/jeffbaumes-vtk,johnkit/vtk-dev,Wuteyan/VTK,biddisco/VTK,biddisco/VTK,spthaolt/VTK,arnaudgelas/VTK,jeffbaumes/jeffbaumes-vtk,demarle/VTK,demarle/VTK,mspark93/VTK,johnkit/vtk-dev,biddisco/VTK,aashish24/VTK-old,msmolens/VTK,jeffbaumes/jeffbaumes-vtk,SimVascular/VTK,keithroe/vtkoptix,cjh1/VTK,berendkleinhaneveld/VTK,johnkit/vtk-dev,candy7393/VTK,mspark93/VTK,hendradarwin/VTK,jmerkow/VTK,ashray/VTK-EVM,demarle/VTK,johnkit/vtk-dev,SimVascular/VTK,jeffbaumes/jeffbaumes-vtk,aashish24/VTK-old,SimVascular/VTK,demarle/VTK,sumedhasingla/VTK,hendradarwin/VTK,gram526/VTK,sankhesh/VTK,johnkit/vtk-dev,msmolens/VTK,candy7393/VTK,collects/VTK,Wuteyan/VTK,SimVascular/VTK,gram526/VTK,jeffbaumes/jeffbaumes-vtk,daviddoria/PointGraphsPhase1,msmolens/VTK,candy7393/VTK,daviddoria/PointGraphsPhase1,jmerkow/VTK,cjh1/VTK,naucoin/VTKSlicerWidgets,Wuteyan/VTK,collects/VTK,sankhesh/VTK,arnaudgelas/VTK,aashish24/VTK-old,hendradarwin/VTK,mspark93/VTK,naucoin/VTKSlicerWidgets,cjh1/VTK,msmolens/VTK,sumedhasingla/VTK,sankhesh/VTK,collects/VTK,sankhesh/VTK,Wuteyan/VTK,gram526/VTK,candy7393/VTK,berendkleinhaneveld/VTK,ashray/VTK-EVM,berendkleinhaneveld/VTK,daviddoria/PointGraphsPhase1,demarle/VTK,mspark93/VTK,johnkit/vtk-dev,arnaudgelas/VTK,aashish24/VTK-old,candy7393/VTK,sankhesh/VTK,naucoin/VTKSlicerWidgets,biddisco/VTK,naucoin/VTKSlicerWidgets,aashish24/VTK-old,keithroe/vtkoptix,hendradarwin/VTK,gram526/VTK,naucoin/VTKSlicerWidgets,cjh1/VTK,spthaolt/VTK,SimVascular/VTK,sumedhasingla/VTK,spthaolt/VTK,gram526/VTK,mspark93/VTK,hendradarwin/VTK,arnaudgelas/VTK,arnaudgelas/VTK,cjh1/VTK,ashray/VTK-EVM,collects/VTK,demarle/VTK,daviddoria/PointGraphsPhase1,SimVascular/VTK,cjh1/VTK,jmerkow/VTK,biddisco/VTK,Wuteyan/VTK,gram526/VTK,spthaolt/VTK,keithroe/vtkoptix,jeffbaumes/jeffbaumes-vtk