# Ray traced shadows and mesh scaled to 0 glitch

**URL:** <https://forums.unrealengine.com/t/ray-traced-shadows-and-mesh-scaled-to-0-glitch/316923>\
**Category:** Rendering\
**Tags:** ray-traced-distance-, unreal-engine, Ray-Tracing, Lighting, question\
**Created:** [April 30, 2015, 1:25am UTC](https://forums.unrealengine.com/t/ray-traced-shadows-and-mesh-scaled-to-0-glitch/316923 "2015-04-30T01:25:31Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![hamsterPL](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/hamsterpl/32/1194680_2.png) [@hamsterPL](https://forums.unrealengine.com/u/hamsterPL)\
**Post date:** [April 30, 2015, 1:25am UTC](https://forums.unrealengine.com/t/ray-traced-shadows-and-mesh-scaled-to-0-glitch/316923/1 "2015-04-30T01:25:31Z")

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Hi

I stumbled uppon a glitch with ray traced lighting. I needed to scale down a mesh to 0 during gameplay and it seems ray traced shadows are glitching. I was able to reproduce this on new 3rd person project. UE 4.7.3.

Steps:

put mesh on scene

put light on scene with ray traced distance fields enabled, to lit mesh

scale down mesh to 0

 ![40793-ray+traced+shadow+and+mesh+scaled+to+0.jpg](https://d3kjluh73b9h9o.cloudfront.net/original/4X/c/1/5/c15dfecbc328143bfdbd3d8c97c243e63685f7bc.jpeg)

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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 30, 2015, 9:09pm UTC](https://forums.unrealengine.com/t/ray-traced-shadows-and-mesh-scaled-to-0-glitch/316923/2 "2015-04-30T21:09:32Z")

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Hi hamsterPL,

I was able to reproduce this and have submitted a ticket (UE-14784) for this issue.

Once there is any relevant information to pass along I will make sure to update you here.

Thank you!

Tim