# integrate HAVS algorithm with OpenGL2 rendering background

**URL:** https://discourse.vtk.org/t/integrate-havs-algorithm-with-opengl2-rendering-background/1824
**Category:** Development
**Tags:** proposal
**Created:** [September 26, 2019, 12:46am UTC](https://discourse.vtk.org/t/integrate-havs-algorithm-with-opengl2-rendering-background/1824 "2019-09-26T00:46:49Z")
**Posts on this page:** 1
**Page:** 1

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### Author: ![fanfanliangliang](https://discourse.vtk.org/letter_avatar_proxy/v4/letter/f/71e660/32.png) [@fanfanliangliang](https://discourse.vtk.org/u/fanfanliangliang)
#### Post date: [September 26, 2019, 12:46am UTC](https://discourse.vtk.org/t/integrate-havs-algorithm-with-opengl2-rendering-background/1824/1 "2019-09-26T00:46:49Z")

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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 ?