BUG: Added a glFinish() before swapping buffers. There seems to be an issue with nVidia drivers sometimes not rendering without it.
BUG: Added a glFinish() before swapping buffers. There seems to be an issue with nVidia drivers sometimes not rendering without it.

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