# Issue with Surface TranslucencyVolume and backfaces **URL:** \ **Category:** Rendering\ **Tags:** Water, translucent, unreal-engine, question\ **Created:** [June 28, 2015, 7:45pm UTC](https://forums.unrealengine.com/t/issue-with-surface-translucencyvolume-and-backfaces/323354 "2015-06-28T19:45:14Z")\ **Posts on this page:** 1\ **Showing post:** 12
**Author:** ![anonymous\_user\_cc69b907](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_cc69b907](https://forums.unrealengine.com/u/anonymous_user_cc69b907)\ **Post date:** [July 21, 2015, 2:56pm UTC](https://forums.unrealengine.com/t/issue-with-surface-translucencyvolume-and-backfaces/323354/12 "2015-07-21T14:56:36Z")
Hey joelr, In order to truly understand you methodology with that formula I will need a screenshot of your material and how you are implementing Gerstner’s algorithms. I know that if you don’t set the algorithm up exactly correct then it WILL break your models. Also I have a link to a guy who has already done the math and set the project up in UE4’s node based system. You can download his project through GitHub. I know the way he is implementing it, it will never be used inside of an engine. I will also link you to our wiki page where a much more cost efficient way implementing waves and translucency has been used. Link to Gerstner > **[\[Community Project\] WIP Weather & Water Shader](https://forums.unrealengine.com/showthread.php?42092-Community-Project-WIP-Weather-amp-Ocean-Water-Shader&highlight=Ocean%2BWaves)** > > \*\*Welcome to the community created Simulation, Weather (WIP), and Dynamic TOD system! \*\* \*\*The point of project is twofold. First, it aims to provide a realistic water simulation that is both highly customizable, and being as physically accurate... Link to our wiki > **[A new, community-hosted Unreal Engine Wiki](https://forums.unrealengine.com/t/a-new-community-hosted-unreal-engine-wiki/141494)** > > After over a year in maintenance mode, the official Unreal Engine Wiki is now permanently offline. These resources now live on a new community-run Unreal Engine Community Wiki — https://unrealcommunity.wiki/! You will be able to find content from... Hope this helps, --- _[View the full topic](https://forums.unrealengine.com/t/issue-with-surface-translucencyvolume-and-backfaces/323354)._