# Fake thickness / opacity material - Help

**URL:** <https://forums.unrealengine.com/t/fake-thickness-opacity-material-help/433132>\
**Category:** Rendering\
**Tags:** opacity, unreal-engine, question\
**Created:** [September 4, 2018, 2:39am UTC](https://forums.unrealengine.com/t/fake-thickness-opacity-material-help/433132 "2018-09-04T02:39:19Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![LyubomirIko](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@LyubomirIko](https://forums.unrealengine.com/u/LyubomirIko)\
**Post date:** [September 4, 2018, 2:39am UTC](https://forums.unrealengine.com/t/fake-thickness-opacity-material-help/433132/1 "2018-09-04T02:39:19Z")

</div>

Hello.  
I need to make fake thickness on opacity masked material (some sort of fence)

I use Bump offset - but I have problems of stacking the bump offset-s+opacity - Very messy results :-/  
Can someone show me how to stack them correctly?

**Example picture of what I want to make:**

 ![](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/0/4/204c0e51d103ee913743b65bcb15fa66d90726c8.jpeg)

---

<div class="post-metadata">

**Author:** ![mercusson](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@mercusson](https://forums.unrealengine.com/u/mercusson)\
**Post date:** [August 19, 2025, 11:27pm UTC](https://forums.unrealengine.com/t/fake-thickness-opacity-material-help/433132/2 "2025-08-19T23:27:07Z")

</div>

If you’re still searching smh or for anyone else searching,

You can use the “ parallax ocllusion mapping “ node to add depth to your texture without adding any vertices with a masked materials to achieves this effect.

 ![Sans titre](https://d3kjluh73b9h9o.cloudfront.net/original/4X/d/d/7/dd703b912120ac9ce0c6f67e2ebdd3bc03c51f11.png)