# Shadow spots on clear coat shader

**URL:** <https://forums.unrealengine.com/t/shadow-spots-on-clear-coat-shader/479410>\
**Category:** Rendering\
**Tags:** dynamic-lighting, Shadows, Raytracing, dynamic-shadows, unreal-engine, question\
**Created:** [February 25, 2021, 3:16pm UTC](https://forums.unrealengine.com/t/shadow-spots-on-clear-coat-shader/479410 "2021-02-25T15:16:43Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![Andy\_M23](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Andy\_M23](https://forums.unrealengine.com/u/Andy_M23)\
**Post date:** [February 25, 2021, 3:16pm UTC](https://forums.unrealengine.com/t/shadow-spots-on-clear-coat-shader/479410/1 "2021-02-25T15:16:43Z")

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hi,

Can anyone help me please?? I’m getting really weirder marks in my raytraced shadows on clear coat shades like car paints. You can see in the images.

How can I get rid of them?? iv also attached the setting for the Directional Light and my post process volume.

Thanks Andy

 ![330865-postprocessvolume-settings-1.jpg](https://d3kjluh73b9h9o.cloudfront.net/original/4X/8/9/1/89114dc3e8cdc675b5aad464cd59993380d73f7d.jpeg)

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**Author:** ![anonymous\_user\_5f527ec4](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_5f527ec4](https://forums.unrealengine.com/u/anonymous_user_5f527ec4)\
**Post date:** [March 17, 2021, 9:40am UTC](https://forums.unrealengine.com/t/shadow-spots-on-clear-coat-shader/479410/2 "2021-03-17T09:40:10Z")

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Having the same issue with 4.26.1, hoping to get some fix for this soon.

I’ve noticed another issue with Clearcoat shaders since moving to 4.26 - changing the spotlight radius to anything other than the default 0 seems to completely mess the specular on the object with clearcoat shader applied, creating some really weird artifacts.

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**Author:** ![anonymous\_user\_5f527ec4](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_5f527ec4](https://forums.unrealengine.com/u/anonymous_user_5f527ec4)\
**Post date:** [March 17, 2021, 3:08pm UTC](https://forums.unrealengine.com/t/shadow-spots-on-clear-coat-shader/479410/3 "2021-03-17T15:08:44Z")

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did a bit more digging into this - problem seems to be coming from the Source Angle parameter of the Directional Light. Keeping it at 0 eliminates the weird shadow patches, but of course that means we can’t get nice soft shadows…

Likewise, the bug I mentioned before related to the Spotlight and changing its radius seems to be connected to the Directional Light issue - I am by no means an expert on how graphics work, but so far it looks like the Specular seems to glitch out completely on Clearcoat shaders when using lights with custom Radius/Source Angle values.

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**Author:** ![mpta](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@mpta](https://forums.unrealengine.com/u/mpta)\
**Post date:** [May 11, 2022, 2:07am UTC](https://forums.unrealengine.com/t/shadow-spots-on-clear-coat-shader/479410/4 "2022-05-11T02:07:52Z")

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Hi guys 🙂 Still no fix for it?