# The entire map gets dark after light building for( Mobile\\tablet) ( scalable 3d or 2d) projects **URL:** \ **Category:** Mobile\ **Tags:** unreal-engine, bug-report, question\ **Created:** [May 12, 2016, 9:58pm UTC](https://forums.unrealengine.com/t/the-entire-map-gets-dark-after-light-building-for-mobile-tablet-scalable-3d-or-2d-projects/357258 "2016-05-12T21:58:07Z")\ **Posts on this page:** 11\ **Page:** 1
**Author:** ![anonymous\_user\_277c86b9](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_277c86b9](https://forums.unrealengine.com/u/anonymous_user_277c86b9)\ **Post date:** [May 12, 2016, 9:58pm UTC](https://forums.unrealengine.com/t/the-entire-map-gets-dark-after-light-building-for-mobile-tablet-scalable-3d-or-2d-projects/357258/1 "2016-05-12T21:58:07Z")
only BSP brushes stay light and none of light sources emit light ---
**Author:** ![anonymous\_user\_277c86b9](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_277c86b9](https://forums.unrealengine.com/u/anonymous_user_277c86b9)\ **Post date:** [May 12, 2016, 10:31pm UTC](https://forums.unrealengine.com/t/the-entire-map-gets-dark-after-light-building-for-mobile-tablet-scalable-3d-or-2d-projects/357258/2 "2016-05-12T22:31:49Z")
I have a level of static meshes that is created from BSP brushes( I converted BSP brushes to static meshes) and directional light has no effect on them and also point lights and spot lights. I put a regular static mesh cube next to them and built then that regular static mesh got light and those static meshes that I created from BSP brushes got dark. ---
**Author:** ![anonymous\_user\_277c86b9](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_277c86b9](https://forums.unrealengine.com/u/anonymous_user_277c86b9)\ **Post date:** [May 12, 2016, 10:42pm UTC](https://forums.unrealengine.com/t/the-entire-map-gets-dark-after-light-building-for-mobile-tablet-scalable-3d-or-2d-projects/357258/3 "2016-05-12T22:42:10Z")
![90380-before+build.png](https://d3kjluh73b9h9o.cloudfront.net/original/4X/e/e/1/ee1cb8e64b58151ba6b8a7f6fe876eb2a48b6959.png) ![90381-after+build.png](https://d3kjluh73b9h9o.cloudfront.net/original/4X/5/a/1/5a1c6e7765e239e7ecf5aa50f9a018c171a65a37.png) ---
**Author:** ![anonymous\_user\_277c86b9](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_277c86b9](https://forums.unrealengine.com/u/anonymous_user_277c86b9)\ **Post date:** [May 12, 2016, 10:43pm UTC](https://forums.unrealengine.com/t/the-entire-map-gets-dark-after-light-building-for-mobile-tablet-scalable-3d-or-2d-projects/357258/4 "2016-05-12T22:43:43Z")
lights have no effect on static meshes created from BSP brushes ---
**Author:** ![anonymous\_user\_277c86b9](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_277c86b9](https://forums.unrealengine.com/u/anonymous_user_277c86b9)\ **Post date:** [May 12, 2016, 10:49pm UTC](https://forums.unrealengine.com/t/the-entire-map-gets-dark-after-light-building-for-mobile-tablet-scalable-3d-or-2d-projects/357258/5 "2016-05-12T22:49:41Z")
first I supposed that the materials that used on them are not supported by mobile devices but they get dark with every kind of materials ---
**Author:** ![anonymous\_user\_277c86b9](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_277c86b9](https://forums.unrealengine.com/u/anonymous_user_277c86b9)\ **Post date:** [May 12, 2016, 10:55pm UTC](https://forums.unrealengine.com/t/the-entire-map-gets-dark-after-light-building-for-mobile-tablet-scalable-3d-or-2d-projects/357258/6 "2016-05-12T22:55:11Z")
and also it sounds that those static meshes created from BSP brushes have some issues related to LODs. during trying to build lighting the level, a folder named HLOD was being repeatedly created in content folder and in levels folder. I thought that that was a virus 😃 ---
**Author:** ![anonymous\_user\_277c86b9](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_277c86b9](https://forums.unrealengine.com/u/anonymous_user_277c86b9)\ **Post date:** [May 12, 2016, 10:59pm UTC](https://forums.unrealengine.com/t/the-entire-map-gets-dark-after-light-building-for-mobile-tablet-scalable-3d-or-2d-projects/357258/7 "2016-05-12T22:59:40Z")
this issue has ruined me because I finally found a way to design my level like what i want using BSP brushes and now they cannot be there . ---
**Author:** ![anonymous\_user\_277c86b9](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_277c86b9](https://forums.unrealengine.com/u/anonymous_user_277c86b9)\ **Post date:** [May 13, 2016, 10:44am UTC](https://forums.unrealengine.com/t/the-entire-map-gets-dark-after-light-building-for-mobile-tablet-scalable-3d-or-2d-projects/357258/8 "2016-05-13T10:44:13Z")
static meshes created form BSP brushes have shadow but are completely dark like their shadow. i have already tested them in UE4.8 without this problem ---
**Author:** ![anonymous\_user\_277c86b9](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_277c86b9](https://forums.unrealengine.com/u/anonymous_user_277c86b9)\ **Post date:** [May 13, 2016, 10:53am UTC](https://forums.unrealengine.com/t/the-entire-map-gets-dark-after-light-building-for-mobile-tablet-scalable-3d-or-2d-projects/357258/9 "2016-05-13T10:53:19Z")
static meshes created from every kind of volumes have this problem ---
**Author:** ![Tim\_Hobson](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Tim\_Hobson](https://forums.unrealengine.com/u/Tim_Hobson)\ **Post date:** [May 13, 2016, 1:51pm UTC](https://forums.unrealengine.com/t/the-entire-map-gets-dark-after-light-building-for-mobile-tablet-scalable-3d-or-2d-projects/357258/10 "2016-05-13T13:51:18Z")
Hi Saeedc, I’ve moved this out of Bug Reports since this isn’t bug with the editor or functionality. This is just a low lightmap resolution and the wrong coordinate index used for the BSP converted to a Static Mesh. Follow the information here for more details: > **[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... Thank you! ---
**Author:** ![anonymous\_user\_277c86b9](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_277c86b9](https://forums.unrealengine.com/u/anonymous_user_277c86b9)\ **Post date:** [May 13, 2016, 2:32pm UTC](https://forums.unrealengine.com/t/the-entire-map-gets-dark-after-light-building-for-mobile-tablet-scalable-3d-or-2d-projects/357258/11 "2016-05-13T14:32:11Z")
thank you so much . you are great