integrate HAVS algorithm with OpenGL2 rendering background

Hello community ,
We are affected by a fatal issue on VTK8.0 .
If we build VTK8.0 with OpenGL(rendering background), there are some classes about HAVS algorithm (such like vtkHAVSVolumeMapper) built successfully. But with OpenGL2 ,they won’t .
So i want to know there is any wonderful idea that could integrate vtkHAVSVolumeMapper into VTK with OpenGL2 rendering background.
Any clue ?