# Why does my baked lighting have these issues?

**URL:** <https://forums.unrealengine.com/t/why-does-my-baked-lighting-have-these-issues/1599338>\
**Category:** Rendering\
**Tags:** unreal-engine, question\
**Created:** [January 8, 2024, 3:36pm UTC](https://forums.unrealengine.com/t/why-does-my-baked-lighting-have-these-issues/1599338 "2024-01-08T15:36:40Z")\
**Posts on this page:** 1\
**Showing post:** 6

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**Author:** ![Jimbohalo10](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/jimbohalo10/32/961440_2.png) [@Jimbohalo10](https://forums.unrealengine.com/u/Jimbohalo10)\
**Post date:** [January 8, 2024, 7:34pm UTC](https://forums.unrealengine.com/t/why-does-my-baked-lighting-have-these-issues/1599338/6 "2024-01-08T19:34:01Z")

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> [@ChSt15](#):
>
> The landscape does not cast shadows

Hi @ChSt15,  
Your problem is directly related to fix of my patch from the Epic GPU Lightmass which requires DX12 and SM6 enabled along with installing my backported patch  
[EpicGPULightMassPatch/README.md at main · jimshalo10/EpicGPULightMassPatch (github.com)](https://github.com/jimshalo10/EpicGPULightMassPatch/blob/main/README.md)

This was built to fix the problem

[GPU Lightmass not working on Landscape - Development / Rendering - Epic Developer Community Forums (unrealengine.com)](https://forums.unrealengine.com/t/gpu-lightmass-not-working-on-landscape/1371174/18)

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