# Does Paraview support custom shaders?
**URL:** https://discourse.paraview.org/t/does-paraview-support-custom-shaders/5495
**Category:** ParaView Support
**Created:** [October 5, 2020, 11:41am UTC](https://discourse.paraview.org/t/does-paraview-support-custom-shaders/5495 "2020-10-05T11:41:54Z")
**Posts on this page:** 4
**Page:** 1
### Author:  [@jone](https://discourse.paraview.org/u/jone)
#### Post date: [October 5, 2020, 11:41am UTC](https://discourse.paraview.org/t/does-paraview-support-custom-shaders/5495/1 "2020-10-05T11:41:54Z")
Or are there other shaders available?The figure below means that there is such an interface:
Thanks in advance for your answers.
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### Author:  [@ben.boeckel](https://discourse.paraview.org/u/ben.boeckel)
#### Post date: [May 15, 2021, 6:08pm UTC](https://discourse.paraview.org/t/does-paraview-support-custom-shaders/5495/2 "2021-05-15T18:08:18Z")
I don’t think there are prepackaged ones, but this does allow one to replace (parts of) the shaders that VTK uses internally.
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### Author:  [@mwestphal](https://discourse.paraview.org/u/mwestphal)
#### Post date: [May 17, 2021, 8:12am UTC](https://discourse.paraview.org/t/does-paraview-support-custom-shaders/5495/3 "2021-05-17T08:12:32Z")
You can write your own and store them using this interface.
Some examples here:
> [@Is there any documents or examples for Custom shader / Shader Replacement?](https://discourse.paraview.org/t/is-there-any-documents-or-examples-for-custom-shader-shader-replacement/1423):
>
> I am trying to shading a point cloud in point gaussian representation. But I cannot figure out how to get vertex normal or how to get camera position through shader replacement/ custom shader. Could someone give me some hints? Thanks!
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### Author:  [@Joachim\_P](https://discourse.paraview.org/u/Joachim_P)
#### Post date: [May 18, 2021, 6:50am UTC](https://discourse.paraview.org/t/does-paraview-support-custom-shaders/5495/4 "2021-05-18T06:50:53Z")
This interface allows to specify a set of shader replacement strings (and NOT the full shader code) which are a low level mechanism in how VTK manages the shader construction depending on the data type and involved mappers. The related properties editor frame help of ParaView shows a short documentation about what is expected. Basically it’s a JSON list that describes, for each replacement: the type of shader, the shader string to search, the replacement string. Clearly, it is a very advanced feature as you must know/guess the shader code.
Hope this helps.
