# \#baked-lighting **URL:** https://forums.unrealengine.com/tag/baked-lighting/2918.md [Latest](https://forums.unrealengine.com/latest.md) · [Categories](https://forums.unrealengine.com/categories.md) · [Tags](https://forums.unrealengine.com/tags.md) --- ## [No indirect lighting baked CPU Lightmass 5.7.1 and 5.6.1](https://forums.unrealengine.com/t/no-indirect-lighting-baked-cpu-lightmass-5-7-1-and-5-6-1/2689636)
**Author:** [@SStoytchev](https://forums.unrealengine.com/u/SStoytchev)\ **Replies:** 6\ **Last updated:** [September 5, 2026, 1:25pm UTC](https://forums.unrealengine.com/t/no-indirect-lighting-baked-cpu-lightmass-5-7-1-and-5-6-1/2689636 "2026-09-05T13:25:41Z")
Hi, anyone having issues baking lights? I’ve been spending two days on this, trying all kinds of solutions, but nothing works. I’m basically getting no Global Illumination, only the direct lighting is getting baked. I re… --- ## [CPU Lightmass UE 5.8](https://forums.unrealengine.com/t/cpu-lightmass-ue-5-8/2729372)
**Author:** [@apfelbaum](https://forums.unrealengine.com/u/apfelbaum)\ **Replies:** 3\ **Last updated:** [August 26, 2026, 3:00pm UTC](https://forums.unrealengine.com/t/cpu-lightmass-ue-5-8/2729372 "2026-08-26T15:00:48Z")
Summary CPU Lightmass is broken. Skylight bounce is not working on static meshes as well as clear coat enabled materials dont have skylight occlusion. this affects legacy as well as substrate materials. The name of the … --- ## [Animated custom skybox or HDR?](https://forums.unrealengine.com/t/animated-custom-skybox-or-hdr/441227)
**Author:** [@live4film](https://forums.unrealengine.com/u/live4film)\ **Replies:** 2\ **Last updated:** [May 20, 2026, 1:36am UTC](https://forums.unrealengine.com/t/animated-custom-skybox-or-hdr/441227 "2026-05-20T01:36:16Z")
I am facing a huge FPS issue in my game. The entire wold’s ground plane/terrain is animated so the lighting can’t be baked, and even if I could it is so vastly infinite that I run out of memory. I also tried animating th… --- ## [How can I bake lighting for only a small specific area in UE5? ](https://forums.unrealengine.com/t/how-can-i-bake-lighting-for-only-a-small-specific-area-in-ue5/2721518)
**Author:** [@xipigta](https://forums.unrealengine.com/u/xipigta)\ **Replies:** 3\ **Last updated:** [May 15, 2026, 12:26pm UTC](https://forums.unrealengine.com/t/how-can-i-bake-lighting-for-only-a-small-specific-area-in-ue5/2721518 "2026-05-15T12:26:52Z")
I’m currently working on a very large-scale world in UE5, and for performance reasons I decided to use a traditional baked lighting workflow instead of Lumen. For this project, being able to bake lighting for only a sma… --- ## [Unreal (5.4.4 and 5.6 Preview) Lightmass on Mac stopping at 0%](https://forums.unrealengine.com/t/unreal-5-4-4-and-5-6-preview-lightmass-on-mac-stopping-at-0/2530543)
**Author:** [@GameAnim](https://forums.unrealengine.com/u/GameAnim)\ **Replies:** 15\ **Last updated:** [April 22, 2026, 6:41pm UTC](https://forums.unrealengine.com/t/unreal-5-4-4-and-5-6-preview-lightmass-on-mac-stopping-at-0/2530543 "2026-04-22T18:41:55Z")
I am unable to get Unreal to build lighting on an Apple MacBook Pro M4, with it stopping at 0% before failing, and offering no errors beyond: LogStaticLightingSystem: Warning: Failed to build lighting!!! Lighting build … --- ## [Movable mesh not casting shadows from stationary light (Unreal 5.3.2 and 5.4 source)](https://forums.unrealengine.com/t/movable-mesh-not-casting-shadows-from-stationary-light-unreal-5-3-2-and-5-4-source/1753438)
**Author:** [@JW3153](https://forums.unrealengine.com/u/JW3153)\ **Replies:** 2\ **Last updated:** [February 27, 2026, 2:06pm UTC](https://forums.unrealengine.com/t/movable-mesh-not-casting-shadows-from-stationary-light-unreal-5-3-2-and-5-4-source/1753438 "2026-02-27T14:06:33Z")
Hi All I have found an interesting issue that I cannot seem to solve regarding stationary directional light and a moveable static mesh (specifically a door) in a baked (GPU) lighting situation. When I bake the light fo… --- ## [Does Lightmass Important volumes actually do anything?](https://forums.unrealengine.com/t/does-lightmass-important-volumes-actually-do-anything/2694681)
**Author:** [@DanielOS96](https://forums.unrealengine.com/u/DanielOS96)\ **Replies:** 0\ **Last updated:** [January 24, 2026, 8:35pm UTC](https://forums.unrealengine.com/t/does-lightmass-important-volumes-actually-do-anything/2694681 "2026-01-24T20:35:45Z")
Do Lightmass Importance volumes actually do anything if you bake lighting with volumetric lighting? Or is this some kind of social experiment from Epic to see if we will play along and just place random boxes over cool s… --- ## [Material Error on Startup that I cannot Fix](https://forums.unrealengine.com/t/material-error-on-startup-that-i-cannot-fix/2694344)
**Author:** [@DanielOS96](https://forums.unrealengine.com/u/DanielOS96)\ **Replies:** 1\ **Last updated:** [January 23, 2026, 1:53pm UTC](https://forums.unrealengine.com/t/material-error-on-startup-that-i-cannot-fix/2694344 "2026-01-23T13:53:17Z")
I get this error every time I start the UE5 editor. I have baked a scene with the M\_ProcGrid material so the bUsedWithStaticLighting becomes available, ticked the box so it is on and saved the material. I still get this … --- ## [Ambient Occlusion (AO) with GPU Lightmass](https://forums.unrealengine.com/t/ambient-occlusion-ao-with-gpu-lightmass/1998383)
**Author:** [@Dan.Smith2](https://forums.unrealengine.com/u/Dan.Smith2)\ **Replies:** 2\ **Last updated:** [December 19, 2025, 5:22am UTC](https://forums.unrealengine.com/t/ambient-occlusion-ao-with-gpu-lightmass/1998383 "2025-12-19T05:22:19Z")
Hi, im baking my lights for VR with GPU lightmass, everything looks good but the AO could use a little boosting. I dont want to add the AO through the Post process, as it kills my VR performance, so is there a way to con… --- ## [Can't get UE5 to build lighting?](https://forums.unrealengine.com/t/cant-get-ue5-to-build-lighting/671933)
**Author:** [@crEA-tEch](https://forums.unrealengine.com/u/crEA-tEch)\ **Replies:** 21\ **Last updated:** [July 1, 2025, 4:32pm UTC](https://forums.unrealengine.com/t/cant-get-ue5-to-build-lighting/671933 "2025-07-01T16:32:40Z")
Hello all Either I’m being thick or this just isn’t working like its supposed to? I’ve just opened a brand new first person template, set all lights to static, turned off lumen, even added an extra point light and then… --- ## [UE 5.5 Baked Lightning Weird Black Mesh Problem](https://forums.unrealengine.com/t/ue-5-5-baked-lightning-weird-black-mesh-problem/2534580)
**Author:** [@HorizonNK](https://forums.unrealengine.com/u/HorizonNK)\ **Replies:** 2\ **Last updated:** [May 31, 2025, 8:22am UTC](https://forums.unrealengine.com/t/ue-5-5-baked-lightning-weird-black-mesh-problem/2534580 "2025-05-31T08:22:42Z")
Hello, a few days ago, I tried to switch the lighting in my project from Lumen to Baked Light, but it seems I wasn’t successful. The ceiling and floor are completely black no matter what I do. I enabled Generate UVs, adj… --- ## [LOD and Light bake](https://forums.unrealengine.com/t/lod-and-light-bake/2523216)
**Author:** [@Shunitzo](https://forums.unrealengine.com/u/Shunitzo)\ **Replies:** 1\ **Last updated:** [May 24, 2025, 12:59pm UTC](https://forums.unrealengine.com/t/lod-and-light-bake/2523216 "2025-05-24T12:59:11Z")
I have used UE for a few years, but I still can’t comprehend light baking… For some reason LOD 1 to N won’t bake light normaly. LOD 0 looks fine. I use GPU Lightmass, but normal bake gives same results. Any ideas… --- ## [Static lights have a cut off after baking. ](https://forums.unrealengine.com/t/static-lights-have-a-cut-off-after-baking/2463057)
**Author:** [@Plaugh](https://forums.unrealengine.com/u/Plaugh)\ **Replies:** 0\ **Last updated:** [April 18, 2025, 1:16pm UTC](https://forums.unrealengine.com/t/static-lights-have-a-cut-off-after-baking/2463057 "2025-04-18T13:16:59Z")
I‘m using UE5.4 for the project, and after light baking, two of the rectangle lights have harsh cut off on the mesh, I’ve been able to fix it by making a new light and putting it back in the old spot, but now it doesn’t … --- ## [GPU Lightmass support for RX7000/RDNA3 GPU's](https://forums.unrealengine.com/t/gpu-lightmass-support-for-rx7000-rdna3-gpus/2450307)
**Author:** [@stormergames001](https://forums.unrealengine.com/u/stormergames001)\ **Replies:** 0\ **Last updated:** [April 10, 2025, 9:33pm UTC](https://forums.unrealengine.com/t/gpu-lightmass-support-for-rx7000-rdna3-gpus/2450307 "2025-04-10T21:33:22Z")
My question is simple, what are the known issues/compatibility for GPU lightmass lightmap baking with AMD RX7000/RDNA3 GPU’s? I am using an RX 7900 XTX and I have had zero success with baking light maps through GPU light… --- ## [Lighting Needs to be Rebuilt | GPU Lightmass](https://forums.unrealengine.com/t/lighting-needs-to-be-rebuilt-gpu-lightmass/2170458)
**Author:** [@BestMZ123](https://forums.unrealengine.com/u/BestMZ123)\ **Replies:** 2\ **Last updated:** [March 6, 2025, 9:46am UTC](https://forums.unrealengine.com/t/lighting-needs-to-be-rebuilt-gpu-lightmass/2170458 "2025-03-06T09:46:34Z")
I bake lightning with GPU lightmass. But 480 of the 5,400 objects remain unbuilt. --- ## [Issue: Use Two Sided Lighting doesn't work](https://forums.unrealengine.com/t/issue-use-two-sided-lighting-doesnt-work/440701)
**Author:** [@Roshondas](https://forums.unrealengine.com/u/Roshondas)\ **Replies:** 3\ **Last updated:** [March 6, 2025, 2:05am UTC](https://forums.unrealengine.com/t/issue-use-two-sided-lighting-doesnt-work/440701 "2025-03-06T02:05:56Z")
Hi Guys! I found today a very serious error with the burning lightmass on two sided material objects." Use Two Sided Lighting" flag does not work. Indirect lights are not displayed on two sided objects. This is a seriou… --- ## [Why are static light baked shadows are so pixelated compared to stationary?](https://forums.unrealengine.com/t/why-are-static-light-baked-shadows-are-so-pixelated-compared-to-stationary/2344662)
**Author:** [@Kligan](https://forums.unrealengine.com/u/Kligan)\ **Replies:** 5\ **Last updated:** [February 19, 2025, 11:46am UTC](https://forums.unrealengine.com/t/why-are-static-light-baked-shadows-are-so-pixelated-compared-to-stationary/2344662 "2025-02-19T11:46:00Z")
Same light source, same lightmap resolution on the surface. But on the first screenshot the light is set to static, and on the second - to stationary. Both scenarios were baked. Why does static light looks so much wo… --- ## [light leak](https://forums.unrealengine.com/t/light-leak/2341490)
**Author:** [@Kratos\_again](https://forums.unrealengine.com/u/Kratos_again)\ **Replies:** 3\ **Last updated:** [February 18, 2025, 9:36am UTC](https://forums.unrealengine.com/t/light-leak/2341490 "2025-02-18T09:36:36Z")
I have this problem with Gpu lightmass and I am not sure how to solve it, light is hiden static, everything is boxed except ceiling but behind ceiling there is another double box ceiling so light doesn’t come from the ba… --- ## [Moving Sub-Level Location does not also move Baked Lighting with it.](https://forums.unrealengine.com/t/moving-sub-level-location-does-not-also-move-baked-lighting-with-it/417882)
**Author:** [@Shadow\_Knights](https://forums.unrealengine.com/u/Shadow_Knights)\ **Replies:** 14\ **Last updated:** [February 16, 2025, 7:49am UTC](https://forums.unrealengine.com/t/moving-sub-level-location-does-not-also-move-baked-lighting-with-it/417882 "2025-02-16T07:49:25Z")
Hello, I have what appears to be a bug with regards to Baked Lighting information not moving with Sub Levels in the Persistent Level. This causes each SubLevel to have incorrect lighting information on the terrain/room… --- ## [How to bake lightmap on same object with multiple materials](https://forums.unrealengine.com/t/how-to-bake-lightmap-on-same-object-with-multiple-materials/325759)
**Author:** [@anonymous\_user\_e3a752f6](https://forums.unrealengine.com/u/anonymous_user_e3a752f6)\ **Replies:** 3\ **Last updated:** [February 14, 2025, 1:14pm UTC](https://forums.unrealengine.com/t/how-to-bake-lightmap-on-same-object-with-multiple-materials/325759 "2025-02-14T13:14:07Z")
I’m doing an architectural visualization and I would like to be able to change the material of a sofa when I hit the “C” button. I used “Set material function” to do this job and I’m able to that in the game. The proble… --- ## [Baking lightning problem](https://forums.unrealengine.com/t/baking-lightning-problem/2331098)
**Author:** [@Kratos\_again](https://forums.unrealengine.com/u/Kratos_again)\ **Replies:** 0\ **Last updated:** [February 13, 2025, 3:02pm UTC](https://forums.unrealengine.com/t/baking-lightning-problem/2331098 "2025-02-13T15:02:00Z")
I have problem on picture and have no idea how to solve it, guess its indirect illumination because no direct light goes in that spot, only indirect, so its shadow… Lights are static and its all baked lightmaps. Its not … --- ## [GPU lightmass progress bar](https://forums.unrealengine.com/t/gpu-lightmass-progress-bar/2328250)
**Author:** [@Kratos\_again](https://forums.unrealengine.com/u/Kratos_again)\ **Replies:** 0\ **Last updated:** [February 11, 2025, 9:24pm UTC](https://forums.unrealengine.com/t/gpu-lightmass-progress-bar/2328250 "2025-02-11T21:24:47Z")
So when enabled GPU lightmass doesn’t show progress bar like swarm agent that show you seconds and percentage so you can calculate how much do you need to wait aprox. I just have same percentage notification in bottom ri… --- ## [Issue with Light Baking](https://forums.unrealengine.com/t/issue-with-light-baking/2320523)
**Author:** [@LONEWOLF\_004](https://forums.unrealengine.com/u/LONEWOLF_004)\ **Replies:** 19\ **Last updated:** [February 6, 2025, 9:50pm UTC](https://forums.unrealengine.com/t/issue-with-light-baking/2320523 "2025-02-06T21:50:24Z")
Uhm… hello guys… i am currently learning unreal and i think this might be very basic problem but i can’t able to solve it… i had this issue with light baking… before building my lighting the scene look like this… so… --- ## [Light maps not baking right at all](https://forums.unrealengine.com/t/light-maps-not-baking-right-at-all/2301116)
**Author:** [@wolffang042](https://forums.unrealengine.com/u/wolffang042)\ **Replies:** 4\ **Last updated:** [January 25, 2025, 3:35am UTC](https://forums.unrealengine.com/t/light-maps-not-baking-right-at-all/2301116 "2025-01-25T03:35:57Z")
I have no idea what is happerning but when i use dynamic light it works fine but when i bake it, it does this. please help :frowning: --- ## [how to remove this weird texture loadings?](https://forums.unrealengine.com/t/how-to-remove-this-weird-texture-loadings/2173533)
**Author:** [@NURSI111](https://forums.unrealengine.com/u/NURSI111)\ **Replies:** 0\ **Last updated:** [December 5, 2024, 12:24pm UTC](https://forums.unrealengine.com/t/how-to-remove-this-weird-texture-loadings/2173533 "2024-12-05T12:24:34Z")
--- ## [Bakaed lighting stuck at 0%](https://forums.unrealengine.com/t/bakaed-lighting-stuck-at-0/2130143)
**Author:** [@Pouyad](https://forums.unrealengine.com/u/Pouyad)\ **Replies:** 0\ **Last updated:** [November 17, 2024, 6:05am UTC](https://forums.unrealengine.com/t/bakaed-lighting-stuck-at-0/2130143 "2024-11-17T06:05:17Z")
I’m working on a project, I’m on 5.4 version and I’m using baked lighting; swarm agent no GPU Lightmass. The light building process gets stuck at 0% for a looooooooooooooong time then starts very slowly. I have kept al… --- ## [Stationary lights in stream level error after light bake](https://forums.unrealengine.com/t/stationary-lights-in-stream-level-error-after-light-bake/878834)
**Author:** [@Bad\_Vices\_Games](https://forums.unrealengine.com/u/Bad_Vices_Games)\ **Replies:** 1\ **Last updated:** [October 6, 2024, 6:21am UTC](https://forums.unrealengine.com/t/stationary-lights-in-stream-level-error-after-light-bake/878834 "2024-10-06T06:21:51Z")
Hello, I’m experiencing weird issues when baking stationary lights in sub-levels. In the sub level loaded in the persistent level I see all the stationary lights with red crosses even though they don’t overlap, I’m awa… --- ## [Precomputed Visibility Volume not building Data](https://forums.unrealengine.com/t/precomputed-visibility-volume-not-building-data/1882616)
**Author:** [@Pebblebz](https://forums.unrealengine.com/u/Pebblebz)\ **Replies:** 1\ **Last updated:** [September 19, 2024, 1:51am UTC](https://forums.unrealengine.com/t/precomputed-visibility-volume-not-building-data/1882616 "2024-09-19T01:51:29Z")
I cannot get precomputed visibility to work. I have tried on multiple projects. I must be missing something, but after looking through the docs and multiple forums nothing is working. Precomputed visibility is on My … --- ## [How can I inspect baked lightmaps?](https://forums.unrealengine.com/t/how-can-i-inspect-baked-lightmaps/284413)
**Author:** [@anonymous\_user\_389e656c](https://forums.unrealengine.com/u/anonymous_user_389e656c)\ **Replies:** 7\ **Last updated:** [July 25, 2024, 11:24pm UTC](https://forums.unrealengine.com/t/how-can-i-inspect-baked-lightmaps/284413 "2024-07-25T23:24:14Z")
How can I inspect baked lightmaps texture? I’m trying to understand the source of some artifacts and viewing the baked textures would be helpful. From other questions and comments I got that They are stored in the map… --- ## [Quixel Bridge models don't have Lightmap UVs, and if generated, lightmass bake them black!](https://forums.unrealengine.com/t/quixel-bridge-models-dont-have-lightmap-uvs-and-if-generated-lightmass-bake-them-black/667220)
**Author:** [@Renanmgs](https://forums.unrealengine.com/u/Renanmgs)\ **Replies:** 3\ **Last updated:** [July 10, 2024, 5:12am UTC](https://forums.unrealengine.com/t/quixel-bridge-models-dont-have-lightmap-uvs-and-if-generated-lightmass-bake-them-black/667220 "2024-07-10T05:12:09Z")
Hi, i created a new blank project to test this and all my generated UV for lights are being baked black. I have 3 objects in my scene. From Left to R, the first black cube is a cube generated form Modeling Mode, wit… [Next page](https://forums.unrealengine.com/tag/baked-lighting/2918.md?match_all_tags=true&page=1&tags%5B%5D=baked-lighting)