# VTK Examples - New Physically Based Rendering examples
**URL:** https://discourse.vtk.org/t/vtk-examples-new-physically-based-rendering-examples/9737
**Category:** Announcements
**Created:** [November 4, 2022, 5:05am UTC](https://discourse.vtk.org/t/vtk-examples-new-physically-based-rendering-examples/9737 "2022-11-04T05:05:56Z")
**Posts on this page:** 5
**Page:** 1
### Author:  [@amaclean](https://discourse.vtk.org/u/amaclean)
#### Post date: [November 4, 2022, 5:05am UTC](https://discourse.vtk.org/t/vtk-examples-new-physically-based-rendering-examples/9737/1 "2022-11-04T05:05:56Z")
I have added fourteen PBR examples to vtk-examples.
They are:
| C++ | Python | Description |
| --- | --- | --- |
| [PBR Anisotropy](https://kitware.github.io/vtk-examples/site/Cxx/Rendering/PBR_Anisotropy/) | [PBR Anisotropy](https://kitware.github.io/vtk-examples/site/Python/Rendering/PBR_Anisotropy/) | Render spheres with different anisotropy values. |
| [PBR\_Clear\_Coat](https://kitware.github.io/vtk-examples/site/Cxx/Rendering/PBR_Clear_Coat/) | [PBR\_Clear\_Coat](https://kitware.github.io/vtk-examples/site/Python/Rendering/PBR_Clear_Coat/) | Render a cube with custom texture mapping and a coat normal texture. |
| [PBR Edge Tint](https://kitware.github.io/vtk-examples/site/Cxx/Rendering/PBR_Edge_Tint/) | [PBR Edge Tint](https://kitware.github.io/vtk-examples/site/Python/Rendering/PBR_Edge_Tint/) | Render spheres with different edge colors using a skybox as image based lighting. |
| [PBR HDR Environment](https://kitware.github.io/vtk-examples/site/Cxx/Rendering/PBR_HDR_Environment/) | [PBR HDR Environment](https://kitware.github.io/vtk-examples/site/Python/Rendering/PBR_HDR_Environment/) | Renders spheres with different materials using a skybox as image based lighting. |
| [PBR Mapping](https://kitware.github.io/vtk-examples/site/Cxx/Rendering/PBR_Mapping/) | [PBR Mapping](https://kitware.github.io/vtk-examples/site/Python/Rendering/PBR_Mapping/) | Render a cube with custom texture mapping. |
| [PBR Materials](https://kitware.github.io/vtk-examples/site/Cxx/Rendering/PBR_Materials/) | [PBR Materials](https://kitware.github.io/vtk-examples/site/Python/Rendering/PBR_Materials/) | Renders spheres with different materials using a skybox as image based lighting. |
| [PBR Materials Coat](https://kitware.github.io/vtk-examples/site/Cxx/Rendering/PBR_Materials_Coat/) | [PBR Materials Coat](https://kitware.github.io/vtk-examples/site/Python/Rendering/PBR_Materials_Coat/) | Render spheres with different coat materials using a skybox as image based lighting. |
These examples are derived from the various VTK PBR tests. I hope that they will encourage those considering Physically Based Rendering to experiment. As the results are oftern really beautiful.
They all use a common JSON file which should make things easy as PBR often requires lots of files.
---
### Author:  [@will.schroeder](https://discourse.vtk.org/u/will.schroeder)
#### Post date: [November 4, 2022, 10:58am UTC](https://discourse.vtk.org/t/vtk-examples-new-physically-based-rendering-examples/9737/2 "2022-11-04T10:58:45Z")
Wow, just wow! Wonderful additions
---
### Author:  [@cory.quammen](https://discourse.vtk.org/u/cory.quammen)
#### Post date: [November 4, 2022, 2:57pm UTC](https://discourse.vtk.org/t/vtk-examples-new-physically-based-rendering-examples/9737/3 "2022-11-04T14:57:56Z")
Amazing! Thank you, Andrew!
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### Author:  [@amaclean](https://discourse.vtk.org/u/amaclean)
#### Post date: [November 4, 2022, 11:54pm UTC](https://discourse.vtk.org/t/vtk-examples-new-physically-based-rendering-examples/9737/4 "2022-11-04T23:54:31Z")
You can now view tthe PBR examples as a group in:
- [CxxHowTo](https://kitware.github.io/vtk-examples/site/CxxHowTo/#physically-based-rendering)
- [PythonHowTo](https://kitware.github.io/vtk-examples/site/PythonHowTo/#physically-based-rendering)
You can also see the relevant pictures there.
---
### Author:  [@amaclean](https://discourse.vtk.org/u/amaclean)
#### Post date: [November 7, 2022, 3:20am UTC](https://discourse.vtk.org/t/vtk-examples-new-physically-based-rendering-examples/9737/5 "2022-11-07T03:20:30Z")
I have now updated the original three examples `PBR_Skybox`, `PBR_Skybox_Texturing` and `PBR_Skybox_Anisotropy`. They have a new command line parameter `-t` that activates tone mapping. When this is activated, a slider for exposure will appear.
For all the PBR examples:
- The description of the JSON file is here: [PBR JSON file format](https://kitware.github.io/vtk-examples/site/Documentation/PBR_JSON_format/).
- The function reading the JSON parameter file is the same.
- The function displaying the parameters is the same.
- Functions for the reading of cube maps and equirectangular files are also the same .