# Issue when using shadowGenerator.transparencyShadow = true

**URL:** <https://forum.babylonjs.com/t/issue-when-using-shadowgenerator-transparencyshadow-true/55401>\
**Category:** Questions\
**Created:** [December 16, 2024, 2:19pm UTC](https://forum.babylonjs.com/t/issue-when-using-shadowgenerator-transparencyshadow-true/55401 "2024-12-16T14:19:35Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![bvaisman](https://sea2.discourse-cdn.com/flex024/user_avatar/forum.babylonjs.com/bvaisman/32/20835_2.png) [@bvaisman](https://forum.babylonjs.com/u/bvaisman)\
**Post date:** [December 16, 2024, 2:19pm UTC](https://forum.babylonjs.com/t/issue-when-using-shadowgenerator-transparencyshadow-true/55401/1 "2024-12-16T14:19:35Z")

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Hi everybody,

I have an issue when using shadowGenerator.transparencyShadow = true.

I need to manage transparencies when using materials with alpha AND using materials with opacitytexture.

Here’s my PG : [https://playground.babylonjs.com/#C77SMH#30](https://playground.babylonjs.com/#C77SMH#30)

When keeping the line 86, it works with my opacitytexture but not with the transparent box and it is the opposite when deleting the line 86.

Could you help me to find a solution which works in both cases ?

Thanks,

Boris

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<div class="post-metadata">

**Author:** ![Evgeni\_Popov](https://sea2.discourse-cdn.com/flex024/user_avatar/forum.babylonjs.com/evgeni_popov/32/4432_2.png) [@Evgeni\_Popov](https://forum.babylonjs.com/u/Evgeni_Popov)\
**Post date:** [December 16, 2024, 3:47pm UTC](https://forum.babylonjs.com/t/issue-when-using-shadowgenerator-transparencyshadow-true/55401/2 "2024-12-16T15:47:57Z")

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I’m not sure to understand, your PG seems to work:

 ![image](https://us1.discourse-cdn.com/flex024/uploads/babylonjs/original/3X/f/4/f4c4c1c6c56da337290498e1755d8f61c4cb5671.png)

What should we see?

If you want a soft shadow for the transparent glass, you can set `shadowGenerator.enableSoftTransparentShadow = true`:

 ![image](https://us1.discourse-cdn.com/flex024/uploads/babylonjs/original/3X/f/5/f5bb3561ebd6b87ce072ff5d16319e3cbdeaf9df.png)

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<div class="post-metadata">

**Author:** ![bvaisman](https://sea2.discourse-cdn.com/flex024/user_avatar/forum.babylonjs.com/bvaisman/32/20835_2.png) [@bvaisman](https://forum.babylonjs.com/u/bvaisman)\
**Post date:** [December 17, 2024, 7:53am UTC](https://forum.babylonjs.com/t/issue-when-using-shadowgenerator-transparencyshadow-true/55401/3 "2024-12-17T07:53:01Z")

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Thanks a lot…