# VTK 9.1 OpenVR Demo Render Volume Problem

**URL:** https://discourse.vtk.org/t/vtk-9-1-openvr-demo-render-volume-problem/7663
**Category:** VR/AR
**Created:** [January 18, 2022, 9:57am UTC](https://discourse.vtk.org/t/vtk-9-1-openvr-demo-render-volume-problem/7663 "2022-01-18T09:57:53Z")
**Posts on this page:** 1
**Page:** 1

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### Author: ![zist8888](https://discourse.vtk.org/user_avatar/discourse.vtk.org/zist8888/32/3833_2.png) [@zist8888](https://discourse.vtk.org/u/zist8888)
#### Post date: [January 18, 2022, 9:57am UTC](https://discourse.vtk.org/t/vtk-9-1-openvr-demo-render-volume-problem/7663/1 "2022-01-18T09:57:53Z")

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I use VTK9.1 OpenVR demo，and render volume by Dicom data ,which can show ,but obtained Incorrect viewing angle from HTC comos device. but VTK9.0 is good!