# Epic's GPUlightmass

**URL:** <https://forums.unrealengine.com/t/epics-gpulightmass/139357>\
**Category:** Rendering\
**Tags:** unreal-engine\
**Created:** [March 5, 2020, 12:52pm UTC](https://forums.unrealengine.com/t/epics-gpulightmass/139357 "2020-03-05T12:52:56Z")\
**Posts on this page:** 1\
**Showing post:** 231

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**Author:** ![Miguel1900](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/miguel1900/32/1010694_2.png) [@Miguel1900](https://forums.unrealengine.com/u/Miguel1900)\
**Post date:** [June 9, 2021, 10:36am UTC](https://forums.unrealengine.com/t/epics-gpulightmass/139357/231 "2021-06-09T10:36:06Z")

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I was trying to make a collaborative thread where share all our results and comparisons, evidencing problems to Epic Games, so they can focus on something, but no one has contributed:

> [@Lighting Lab - Testing CPU, GPU(E) & GPU(L) light builds - Let's collaborate!](https://forums.unrealengine.com/t/lighting-lab-testing-cpu-gpu-e-gpu-l-light-builds-lets-collaborate/227361):
>
> Hi all, I specially wanted to test the new GPU Lightmass (Epic Games) versus the ‘old’ GPU Lightmass (Luoshuang), so I created a map where I could simulate very different scenarios, where lighting could encounter problems. I would want to ask you to collaborate making your own tests on this same scene, so, maybe, we can contribute to improve the lighting systems, when reporting and evidencing issues to Epic. In this first attemp, I have made a GPU(Luosuang) test, but I can’t get any similar w…

 ![](https://d3kjluh73b9h9o.cloudfront.net/uploads/default/original/3X/0/c/0c4724ad92c9c61d120678c1712efa4df851237e.jpeg)

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