# Volume Raycasting

**URL:** https://discourse.vtk.org/t/volume-raycasting/7280
**Category:** Support
**Created:** [November 26, 2021, 7:39am UTC](https://discourse.vtk.org/t/volume-raycasting/7280 "2021-11-26T07:39:49Z")
**Posts on this page:** 3
**Page:** 1

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### Author: ![Wenhui-person](https://discourse.vtk.org/user_avatar/discourse.vtk.org/wenhui-person/32/4345_2.png) [@Wenhui-person](https://discourse.vtk.org/u/Wenhui-person)
#### Post date: [November 26, 2021, 7:39am UTC](https://discourse.vtk.org/t/volume-raycasting/7280/1 "2021-11-26T07:39:49Z")

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An alternative to vtkVolumeRayCastCompositeFunction in the latest version.

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### Author: ![mwestphal](https://discourse.vtk.org/user_avatar/discourse.vtk.org/mwestphal/32/19_2.png) [@mwestphal](https://discourse.vtk.org/u/mwestphal)
#### Post date: [November 26, 2021, 8:37am UTC](https://discourse.vtk.org/t/volume-raycasting/7280/2 "2021-11-26T08:37:27Z")

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Translate google:

> Alternative to vtkVolumeRayCastCompositeFunction in the latest version

You may be looking for classvtkOpenGLGPUVolumeRayCastMapper.  
[https://vtk.org/doc/nightly/html/classvtkOpenGLGPUVolumeRayCastMapper.html](https://vtk.org/doc/nightly/html/classvtkOpenGLGPUVolumeRayCastMapper.html)

BTW, this is an english speaking discussion board, please try writing in english.

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### Author: ![Wenhui-person](https://discourse.vtk.org/user_avatar/discourse.vtk.org/wenhui-person/32/4345_2.png) [@Wenhui-person](https://discourse.vtk.org/u/Wenhui-person)
#### Post date: [November 26, 2021, 10:47am UTC](https://discourse.vtk.org/t/volume-raycasting/7280/3 "2021-11-26T10:47:45Z")

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Thank you for your advice.