# \#ray-tracing

**URL:** https://discourse.vtk.org/tag/ray-tracing/52.md

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## [RayCastMapper for SDF](https://discourse.vtk.org/t/raycastmapper-for-sdf/16409)

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**Author:** [@Jens\_Munk\_Hansen](https://discourse.vtk.org/u/Jens_Munk_Hansen)\
**Replies:** 2\
**Last updated:** [May 10, 2026, 8:15pm UTC](https://discourse.vtk.org/t/raycastmapper-for-sdf/16409 "2026-05-10T20:15:35Z")

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Hi Developers We’ve prototyped a single-surface sphere-tracing mapper by forking vtkOpenGLGPUVolumeRayCastMapper. The fork keeps all of the parent’s pipeline plumbing — NDC→texture ray setup, depth-buffer composition, …

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## [Questions about VTK ray tracing roadmap - Anari, visRTX, OptiX](https://discourse.vtk.org/t/questions-about-vtk-ray-tracing-roadmap-anari-visrtx-optix/16375)

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**Author:** [@scotsman60](https://discourse.vtk.org/u/scotsman60)\
**Replies:** 5\
**Last updated:** [May 7, 2026, 7:52pm UTC](https://discourse.vtk.org/t/questions-about-vtk-ray-tracing-roadmap-anari-visrtx-optix/16375 "2026-05-07T19:52:58Z")

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I recently built vtk with support for ray tracing - latest VTK : 9.6, ANARI SDK : 0.15, VisRTX : 0.13, NVIDIA OptiX : 8.1 on Windows and the system works well. But there are several gaps between what IS supported in VT…