# Cast Translucent Shadow as Masked won't bake

**URL:** <https://forums.unrealengine.com/t/cast-translucent-shadow-as-masked-wont-bake/353215>\
**Category:** Rendering\
**Tags:** shadow, Lightmass, translucent, unreal-engine, question\
**Created:** [April 6, 2016, 11:31pm UTC](https://forums.unrealengine.com/t/cast-translucent-shadow-as-masked-wont-bake/353215 "2016-04-06T23:31:04Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![Sapphire](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Sapphire](https://forums.unrealengine.com/u/Sapphire)\
**Post date:** [April 6, 2016, 11:31pm UTC](https://forums.unrealengine.com/t/cast-translucent-shadow-as-masked-wont-bake/353215/1 "2016-04-06T23:31:04Z")

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I cannot seem to get the “Cast Shadow as Masked” Material parameter to work with a Translucent material.

If I load up the Material\_Properties Content Example map, and rebuild the lighting, the shadow that appears in the sample disappears. Any ideas what I am missing?

![85693-cast_translucent_shadow.png](https://d3kjluh73b9h9o.cloudfront.net/original/4X/b/1/6/b1660b6426e9a619cd3bf27a56211d5c4853bf9e.png)

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**Author:** ![Tim\_Hobson](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Tim\_Hobson](https://forums.unrealengine.com/u/Tim_Hobson)\
**Post date:** [April 7, 2016, 6:17pm UTC](https://forums.unrealengine.com/t/cast-translucent-shadow-as-masked-wont-bake/353215/2 "2016-04-07T18:17:35Z")

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Hi Sapphire,

This appears to be a bug and no longer working properly from what I can see. I’ve submitted UE-29198 for this to be investigated and addressed.

Thank you!

-Tim

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**Author:** ![anonymous\_user\_1ea9cccb](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_1ea9cccb](https://forums.unrealengine.com/u/anonymous_user_1ea9cccb)\
**Post date:** [January 11, 2018, 9:21pm UTC](https://forums.unrealengine.com/t/cast-translucent-shadow-as-masked-wont-bake/353215/3 "2018-01-11T21:21:10Z")

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Is there any update on this? It seems that I have still this bug. Version. 18.2

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**Author:** ![GabrielDamato](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@GabrielDamato](https://forums.unrealengine.com/u/GabrielDamato)\
**Post date:** [December 31, 2018, 2:47pm UTC](https://forums.unrealengine.com/t/cast-translucent-shadow-as-masked-wont-bake/353215/4 "2018-12-31T14:47:35Z")

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I am still having this issue in 4.21 as well.

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**Author:** ![kurylo3d](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/kurylo3d/32/1150889_2.png) [@kurylo3d](https://forums.unrealengine.com/u/kurylo3d)\
**Post date:** [January 2, 2023, 10:18pm UTC](https://forums.unrealengine.com/t/cast-translucent-shadow-as-masked-wont-bake/353215/5 "2023-01-02T22:18:23Z")

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I seem to have this problem with 5.1 … been trying to make boxmask work for baking lights. Wont work on cpu or gpu lightmass… with gpu its a solid shadow … with cpu lightmass its no shadow… realtime shadows work though.

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**Author:** ![TirushOne](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@TirushOne](https://forums.unrealengine.com/u/TirushOne)\
**Post date:** [March 18, 2023, 7:01am UTC](https://forums.unrealengine.com/t/cast-translucent-shadow-as-masked-wont-bake/353215/6 "2023-03-18T07:01:11Z")

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yeah I am having this issue in 5.1 as well