# Shadow rendering issue with transparency

**URL:** <https://discourse.slicer.org/t/shadow-rendering-issue-with-transparency/36557>\
**Category:** Support\
**Created:** [June 2, 2024, 3:33pm UTC](https://discourse.slicer.org/t/shadow-rendering-issue-with-transparency/36557 "2024-06-02T15:33:31Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![lassoan](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/lassoan/32/13_2.png) [@lassoan](https://discourse.slicer.org/u/lassoan)\
**Post date:** [June 3, 2024, 2:27pm UTC](https://discourse.slicer.org/t/shadow-rendering-issue-with-transparency/36557/2 "2024-06-03T14:27:34Z")

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> [@mohammed\_alshakhas](#):
>
> I find the shadow visibility feature to be so good, I love it but  
> is it possible to make the effect stronger / weaker?

Yes - see [here](https://discourse.slicer.org/t/improve-ambient-occlusion-in-volume-rendering/33590/6). I just did not get around to integrate this improvement.

> [@mohammed\_alshakhas](#):
>
> I wish it were not ON by default

It is configurable. You can set it to be on or off by default in application settings / Views / Shadows visibility.

> [@mohammed\_alshakhas](#):
>
> it has an issue when segments are transparent.

There are some limitations.

Transparent surfaces don’t cast a shadow, so even if you set your opacity to 99%, you won’t see any shadow casted by that model. This can be considered either a feature or a limitation (it may be useful in some cases).

Depth peeling does not seem to work when shadows are enabled. This can be probably fixed, but most likely would need dedicated funding sent to Kitware.

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_[View the full topic](https://discourse.slicer.org/t/shadow-rendering-issue-with-transparency/36557)._