# Tesseract - Open World Planetary Engine

**URL:** <https://discourse.threejs.org/t/tesseract-open-world-planetary-engine/1473>\
**Category:** Showcase\
**Tags:** planetary-rendering, dual-contouring, volumetric-terrain, engine, terrain, auto-instancing, open-world, performance\
**Created:** [December 20, 2017, 10:58pm UTC](https://discourse.threejs.org/t/tesseract-open-world-planetary-engine/1473 "2017-12-20T22:58:44Z")\
**Posts on this page:** 1\
**Showing post:** 7

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**Author:** ![Harold](https://yyz1.discourse-cdn.com/flex035/user_avatar/discourse.threejs.org/harold/32/32136_2.png) [@Harold](https://discourse.threejs.org/u/Harold)\
**Post date:** [December 22, 2017, 2:07pm UTC](https://discourse.threejs.org/t/tesseract-open-world-planetary-engine/1473/7 "2017-12-22T14:07:23Z")

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This looks amazing. Very well done!

I have to ask though, how did you achieve this fog effect?  
 ![fog](https://cdck-file-uploads-canada1.s3.dualstack.ca-central-1.amazonaws.com/flex035/uploads/threejs/original/1X/3a42632c5084ccfa12cf942812ffaf875d8ea83d.png)

I’ve been looking for a (post processing) shader that allows me to create this effect, but have been unsuccessful so far. Would you care sharing this or point me in the right direction?

Thanks in advance!

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