# Rendering **URL:** https://forums.unrealengine.com/c/development-discussion/rendering/36.md?page=89 [Latest](https://forums.unrealengine.com/latest.md) · [Categories](https://forums.unrealengine.com/categories.md) · [Tags](https://forums.unrealengine.com/tags.md) **Page:** 90 --- ## [2025.2 preview Effects like confetti are not working in animation](https://forums.unrealengine.com/t/2025-2-preview-effects-like-confetti-are-not-working-in-animation/2658454)
**Author:** [@severe\_009](https://forums.unrealengine.com/u/severe_009)\ **Replies:** 0\ **Last updated:** [September 20, 2025, 12:50pm UTC](https://forums.unrealengine.com/t/2025-2-preview-effects-like-confetti-are-not-working-in-animation/2658454 "2025-09-20T12:50:55Z")
Effects such as confetti are not working in the latest preview, theyre just static when rendering the animations. --- ## [After enabling RT Shdows my shadows come out spiky ](https://forums.unrealengine.com/t/after-enabling-rt-shdows-my-shadows-come-out-spiky/2658470)
**Author:** [@Sho.ae](https://forums.unrealengine.com/u/Sho.ae)\ **Replies:** 0\ **Last updated:** [September 20, 2025, 1:13pm UTC](https://forums.unrealengine.com/t/after-enabling-rt-shdows-my-shadows-come-out-spiky/2658470 "2025-09-20T13:13:17Z")
--- ## [Light is flickering in my scene ](https://forums.unrealengine.com/t/light-is-flickering-in-my-scene/2658464)
**Author:** [@federicofritz21](https://forums.unrealengine.com/u/federicofritz21)\ **Replies:** 0\ **Last updated:** [September 20, 2025, 1:12pm UTC](https://forums.unrealengine.com/t/light-is-flickering-in-my-scene/2658464 "2025-09-20T13:12:23Z")
Hello there, I am working in this scene. I am having problems with the lighting. There is this very weird flickering all around. At the moment i am using a post process volume, a skylight with specific cube map and jus… --- ## [\[BUG\] Building lighting always stuck at 0%](https://forums.unrealengine.com/t/bug-building-lighting-always-stuck-at-0/389450)
**Author:** [@anonymous\_user\_2ae1d017](https://forums.unrealengine.com/u/anonymous_user_2ae1d017)\ **Replies:** 10\ **Last updated:** [September 20, 2025, 2:09am UTC](https://forums.unrealengine.com/t/bug-building-lighting-always-stuck-at-0/389450 "2025-09-20T02:09:19Z")
TL/DR: Build lighting never gets past 0% on any map (even with nothing in the map), even with firewalls disabled. UE 4.15, Mac OSX. I’ve tried building lighting for a number of different projects from complex samples, … --- ## [Building lighting stuck at 0%](https://forums.unrealengine.com/t/building-lighting-stuck-at-0/401738)
**Author:** [@So\_Robro](https://forums.unrealengine.com/u/So_Robro)\ **Replies:** 14\ **Last updated:** [September 20, 2025, 2:08am UTC](https://forums.unrealengine.com/t/building-lighting-stuck-at-0/401738 "2025-09-20T02:08:45Z")
Hello, I just created a new project, an empty project. I placed directional light and sky light. I created a standart 2x2 landscape.I pressed build and it got stuck at: Building lighting 0%. I tried it again a couple ti… --- ## [What is the 5.6 replacement for InvalidationBox::CacheRelativeTransforms from UE4? ](https://forums.unrealengine.com/t/what-is-the-5-6-replacement-for-invalidationbox-cacherelativetransforms-from-ue4/2666155)
**Author:** [@anonymous-edc](https://forums.unrealengine.com/u/anonymous-edc)\ **Replies:** 4\ **Last updated:** [September 19, 2025, 6:55pm UTC](https://forums.unrealengine.com/t/what-is-the-5-6-replacement-for-invalidationbox-cacherelativetransforms-from-ue4/2666155 "2025-09-19T18:55:54Z")
Our CPU time is getting hit pretty bad from Slate objects invalidating every frame whenever the camera moves. I’m pretty sure we’d get a speed bump from CacheRelativeTransforms but it looks like it’s gone in 5.6. What’s… --- ## [TM 2025.2 Lumen Surface visualization](https://forums.unrealengine.com/t/tm-2025-2-lumen-surface-visualization/2657291)
**Author:** [@espacedub](https://forums.unrealengine.com/u/espacedub)\ **Replies:** 5\ **Last updated:** [September 19, 2025, 6:19pm UTC](https://forums.unrealengine.com/t/tm-2025-2-lumen-surface-visualization/2657291 "2025-09-19T18:19:55Z")
I’m testing out the Lumen in TM 2025.2, but the “Lumen Surface” display option (using the dropdown from upper right corner, where the eye icon and the full-screen button also are), and there seems to be no change in what… --- ## [3D widgets affected by lighting](https://forums.unrealengine.com/t/3d-widgets-affected-by-lighting/306299)
**Author:** [@Anslem\_1](https://forums.unrealengine.com/u/Anslem_1)\ **Replies:** 55\ **Last updated:** [September 19, 2025, 5:09pm UTC](https://forums.unrealengine.com/t/3d-widgets-affected-by-lighting/306299 "2025-09-19T17:09:00Z")
I’m trying to create a UI that displays on parts of my character, I have it set up and working but I’m having issues with the 3D widgets. They’re affected by lighting. How do I turn that off? I’ve tried checking the tex… --- ## [Incorrect lighting after migrating a level](https://forums.unrealengine.com/t/incorrect-lighting-after-migrating-a-level/2658069)
**Author:** [@VashTStampede](https://forums.unrealengine.com/u/VashTStampede)\ **Replies:** 6\ **Last updated:** [September 19, 2025, 11:01am UTC](https://forums.unrealengine.com/t/incorrect-lighting-after-migrating-a-level/2658069 "2025-09-19T11:01:22Z")
Hello everyone in the community. I really need help; I've tried everything, but I can't solve this problem. I'm creating a game that, like almost all games, has multiple levels. To avoid overloading the main project wi… --- ## [DFAO artefacts in shadows caused by movable SkyLight](https://forums.unrealengine.com/t/dfao-artefacts-in-shadows-caused-by-movable-skylight/2655932)
**Author:** [@Stefan\_9911](https://forums.unrealengine.com/u/Stefan_9911)\ **Replies:** 4\ **Last updated:** [September 19, 2025, 6:14am UTC](https://forums.unrealengine.com/t/dfao-artefacts-in-shadows-caused-by-movable-skylight/2655932 "2025-09-19T06:14:39Z")
Hi I have a video that shows the black artefacts (splotches) appear in shadows and that it’s caused by SkyLight’s cast shadows option. And that the SkyLight is probably using distance field AO to produce those shadows. I… --- ## [Cloud Shadows Artifact Sky Atmosphere ](https://forums.unrealengine.com/t/cloud-shadows-artifact-sky-atmosphere/2666618)
**Author:** [@anonymous-edc](https://forums.unrealengine.com/u/anonymous-edc)\ **Replies:** 13\ **Last updated:** [September 19, 2025, 4:50am UTC](https://forums.unrealengine.com/t/cloud-shadows-artifact-sky-atmosphere/2666618 "2025-09-19T04:50:59Z")
With Cloud Shadows enabled it seems that the SkyAtmosphere is getting shadowed using the volumetric cloud shadow map. I would expect the atmosphere beyond the clouds to not blend with the shadow map. The artifacts disa… --- ## [Raytracing . Landscape does not appear correctly in ray traced reflections.](https://forums.unrealengine.com/t/raytracing-landscape-does-not-appear-correctly-in-ray-traced-reflections/2658060)
**Author:** [@kurylo3d](https://forums.unrealengine.com/u/kurylo3d)\ **Replies:** 0\ **Last updated:** [September 19, 2025, 12:13am UTC](https://forums.unrealengine.com/t/raytracing-landscape-does-not-appear-correctly-in-ray-traced-reflections/2658060 "2025-09-19T00:13:00Z")
Landscape does not appear correct in ray traced reflections.. thats basically just a tiling grass material that i got from brushify. Am i doing somethign wrong? Thoughts or approaches to make this better? --- ## [First person rendering feature clipping issues](https://forums.unrealengine.com/t/first-person-rendering-feature-clipping-issues/2500287)
**Author:** [@anonymous-edc](https://forums.unrealengine.com/u/anonymous-edc)\ **Replies:** 7\ **Last updated:** [September 18, 2025, 12:11pm UTC](https://forums.unrealengine.com/t/first-person-rendering-feature-clipping-issues/2500287 "2025-09-18T12:11:38Z")
Hi, We are trying to use the first person rendering feature from 5.5 to replace our internal material based solution. From our understanding the new first person rendering feature should prevent first person geometry fr… --- ## [Seam visible when using a material with BumpOffset on a Nanite mesh ](https://forums.unrealengine.com/t/seam-visible-when-using-a-material-with-bumpoffset-on-a-nanite-mesh/2666439)
**Author:** [@anonymous-edc](https://forums.unrealengine.com/u/anonymous-edc)\ **Replies:** 4\ **Last updated:** [September 18, 2025, 11:50am UTC](https://forums.unrealengine.com/t/seam-visible-when-using-a-material-with-bumpoffset-on-a-nanite-mesh/2666439 "2025-09-18T11:50:52Z")
When having a material that uses BumpOffset that is fed into the Emissive Color of Surface Opaque Default Lit material that is then applied to a nanite mesh, a visible seam can be seen along edges and the intersections w… --- ## [(need help) Small distance do not cast shadow](https://forums.unrealengine.com/t/need-help-small-distance-do-not-cast-shadow/2657822)
**Author:** [@leoletsrock](https://forums.unrealengine.com/u/leoletsrock)\ **Replies:** 1\ **Last updated:** [September 18, 2025, 11:18am UTC](https://forums.unrealengine.com/t/need-help-small-distance-do-not-cast-shadow/2657822 "2025-09-18T11:18:40Z")
Hello, Why is my wall do not cast shadow like the photo? I tried different way to model the wall, like enabling / disabling nanite, remesh to 1million triangle, model in ue5 directly, model in sketchup and import. But … --- ## [Blocky shadows on Single Layer Water](https://forums.unrealengine.com/t/blocky-shadows-on-single-layer-water/1151034)
**Author:** [@3DMoss](https://forums.unrealengine.com/u/3DMoss)\ **Replies:** 15\ **Last updated:** [September 18, 2025, 10:21am UTC](https://forums.unrealengine.com/t/blocky-shadows-on-single-layer-water/1151034 "2025-09-18T10:21:11Z")
This has been an issue forever it seems. Is there any way to fix these blocky shadows on water yet, without resorting to raytracing? I looks like they fixed it for Fortnite as seen in the video here, but it certainly… --- ## [How to retrieve UEnum by Type?](https://forums.unrealengine.com/t/how-to-retrieve-uenum-by-type/418501)
**Author:** [@DaDummy](https://forums.unrealengine.com/u/DaDummy)\ **Replies:** 5\ **Last updated:** [September 18, 2025, 9:20am UTC](https://forums.unrealengine.com/t/how-to-retrieve-uenum-by-type/418501 "2025-09-18T09:20:15Z")
When I define an UEnum in C++ like this: UENUM(BlueprintType) enum class EMySampleEnum : uint8 { One, Two, Three }; I’d like to be able to access its static UEnum instance like I’m used to with UStruct and UClass wh… --- ## [a lot of out of video memory crashes on 5.6.0](https://forums.unrealengine.com/t/a-lot-of-out-of-video-memory-crashes-on-5-6-0/2651528)
**Author:** [@Flame](https://forums.unrealengine.com/u/Flame)\ **Replies:** 5\ **Last updated:** [September 18, 2025, 9:15am UTC](https://forums.unrealengine.com/t/a-lot-of-out-of-video-memory-crashes-on-5-6-0/2651528 "2025-09-18T09:15:03Z")
its been happening to us a lot, on 3 different machines(with 3 different graphic cards(one of them is an RTX 4080). Before none of the machines had this issue. This has been happening since we moved to 5.6.0. (two of t… --- ## [FRHICommandListImmediate::EndScene 崩溃 ](https://forums.unrealengine.com/t/frhicommandlistimmediate-endscene/2666435)
**Author:** [@anonymous-edc](https://forums.unrealengine.com/u/anonymous-edc)\ **Replies:** 12\ **Last updated:** [September 18, 2025, 9:03am UTC](https://forums.unrealengine.com/t/frhicommandlistimmediate-endscene/2666435 "2025-09-18T09:03:49Z")
在FRHICommandListImmediate::EndScene()： void FRHICommandListImmediate::EndScene() { check(IsImmediate() && IsInRenderingThread()); if (Bypass()) { GetContext().RHIEndScene(); return; } ALLOC\_COMMAND(FRHICommandEn… --- ## [UE5 FGPUSkinCache::ProcessEntry() Crash ](https://forums.unrealengine.com/t/ue5-fgpuskincache-processentry-crash/2666442)
**Author:** [@anonymous-edc](https://forums.unrealengine.com/u/anonymous-edc)\ **Replies:** 8\ **Last updated:** [September 18, 2025, 5:57am UTC](https://forums.unrealengine.com/t/ue5-fgpuskincache-processentry-crash/2666442 "2025-09-18T05:57:37Z")
Crash堆栈如下： \[2025.09.01-13.09.01:400\]\[290\]LogWindows: Error: === Critical error: === \[2025.09.01-13.09.01:400\]\[290\]LogWindows: Error: \[2025.09.01-13.09.01:400\]\[290\]LogWindows: Error: Assertion failed: !AllocationFlags\[… --- ## [Can't set 'Cloud Scattered luminance Scale' via BP ](https://forums.unrealengine.com/t/cant-set-cloud-scattered-luminance-scale-via-bp/2666156)
**Author:** [@anonymous-edc](https://forums.unrealengine.com/u/anonymous-edc)\ **Replies:** 2\ **Last updated:** [September 18, 2025, 3:32am UTC](https://forums.unrealengine.com/t/cant-set-cloud-scattered-luminance-scale-via-bp/2666156 "2025-09-18T03:32:07Z")
Hi there, I am trying to create a sunset/sunrise lighting effect (golden hour) using volumetric clouds. I notice that the only way to control the multi-scattering color of the volumetric cloud is through directional lig… --- ## [Frosted Glass in TM 2023.1 - no blur effect behind glass](https://forums.unrealengine.com/t/frosted-glass-in-tm-2023-1-no-blur-effect-behind-glass/1831627)
**Author:** [@chrobatem](https://forums.unrealengine.com/u/chrobatem)\ **Replies:** 4\ **Last updated:** [September 18, 2025, 2:26am UTC](https://forums.unrealengine.com/t/frosted-glass-in-tm-2023-1-no-blur-effect-behind-glass/1831627 "2025-09-18T02:26:58Z")
In this version of Twinmotion, effects from Frosted Glass are not visible - not only in preview (Real time render), but also in final render. I've tried different level of roughness. In previous version this material wor… --- ## [Crash in InitializeVertexBuffersResources ](https://forums.unrealengine.com/t/crash-in-initializevertexbuffersresources/2667504)
**Author:** [@anonymous-edc](https://forums.unrealengine.com/u/anonymous-edc)\ **Replies:** 4\ **Last updated:** [September 22, 2025, 6:46pm UTC](https://forums.unrealengine.com/t/crash-in-initializevertexbuffersresources/2667504 "2025-09-22T18:46:33Z")
This question was created in reference to: \[UE5.5.4 - Crash in FNiagaraRibbonGpuBuffer::Allocate and \[Content removed\] Just wanted to call out that since our upgrade from 5.5.4 to 5.6.1, we have also been seeing this cr… --- ## [Out-of-range Nanite page indices + SceneCapture component? ](https://forums.unrealengine.com/t/out-of-range-nanite-page-indices-scenecapture-component/2672254)
**Author:** [@anonymous-edc](https://forums.unrealengine.com/u/anonymous-edc)\ **Replies:** 22\ **Last updated:** [October 7, 2025, 9:05pm UTC](https://forums.unrealengine.com/t/out-of-range-nanite-page-indices-scenecapture-component/2672254 "2025-10-07T21:05:41Z")
We are running into a similar error/crash to that in the question \[Out of range streaming request on \[Content removed\] where we are occasionally hitting a RangeCheck error in FStreamingManager::AddParentNewRequestsRecurs… --- ## [UE 5.5 Lumen volumetric fog brightens background](https://forums.unrealengine.com/t/ue-5-5-lumen-volumetric-fog-brightens-background/2634685)
**Author:** [@Khadyko](https://forums.unrealengine.com/u/Khadyko)\ **Replies:** 1\ **Last updated:** [September 17, 2025, 8:52pm UTC](https://forums.unrealengine.com/t/ue-5-5-lumen-volumetric-fog-brightens-background/2634685 "2025-09-17T20:52:29Z")
Hey! I run into an issue when volumetric intensity is increased on any light it’s “cone” brightens everything behind it. You can see that the corridor is completely dark, no light sources inside, but through the cone … --- ## [How to remove all flickering?](https://forums.unrealengine.com/t/how-to-remove-all-flickering/2657390)
**Author:** [@Zimaell](https://forums.unrealengine.com/u/Zimaell)\ **Replies:** 5\ **Last updated:** [September 17, 2025, 7:16pm UTC](https://forums.unrealengine.com/t/how-to-remove-all-flickering/2657390 "2025-09-17T19:16:54Z")
I encounter constant flickering in any situation with any settings, and I also noticed that this flickering happens to absolutely everyone. I’ve searched through a bunch of threads about this problem and this is what I f… --- ## [Is it possible to get a lower resolution of the SceneTexture's PostProcessInput0?](https://forums.unrealengine.com/t/is-it-possible-to-get-a-lower-resolution-of-the-scenetextures-postprocessinput0/787265)
**Author:** [@PatGBG](https://forums.unrealengine.com/u/PatGBG)\ **Replies:** 17\ **Last updated:** [September 17, 2025, 4:55pm UTC](https://forums.unrealengine.com/t/is-it-possible-to-get-a-lower-resolution-of-the-scenetextures-postprocessinput0/787265 "2025-09-17T16:55:17Z")
Hello everyone, As a newcomer to the Unreal Engine, I’m loving the possibilities it offers for creating immersive games and stunning visual effects. However, as I delve deeper into the engine’s capabilities, I find myse… --- ## [Will Mutable Support Nanite Metahumans in Future Unreal Engine Versions? ](https://forums.unrealengine.com/t/will-mutable-support-nanite-metahumans-in-future-unreal-engine-versions/2666163)
**Author:** [@anonymous-edc](https://forums.unrealengine.com/u/anonymous-edc)\ **Replies:** 2\ **Last updated:** [September 17, 2025, 4:50pm UTC](https://forums.unrealengine.com/t/will-mutable-support-nanite-metahumans-in-future-unreal-engine-versions/2666163 "2025-09-17T16:50:09Z")
In the recent “A Peek at Some Future Features Coming to Unreal Engine | Unreal Fest Orlando 2025” talk, Nanite Metahumans were mentioned. If we continue using Mutable, will we miss out on these Nanite-based Metahumans? I… --- ## [5.5 - Advice on Aftermath crash report gathering ](https://forums.unrealengine.com/t/5-5-advice-on-aftermath-crash-report-gathering/2647827)
**Author:** [@anonymous-edc](https://forums.unrealengine.com/u/anonymous-edc)\ **Replies:** 4\ **Last updated:** [September 17, 2025, 4:37pm UTC](https://forums.unrealengine.com/t/5-5-advice-on-aftermath-crash-report-gathering/2647827 "2025-09-17T16:37:36Z")
Hello, We have a released game with a crash report system integration. One of the larger types of crash we see are GPU crashes and its something we have poor visibility on, and generally we are not able to reproduce int… --- ## [Broken Lighmaps (GPU Lightmass) after changing 3060Ti - \> 5070Ti. Totally black objects.](https://forums.unrealengine.com/t/broken-lighmaps-gpu-lightmass-after-changing-3060ti-5070ti-totally-black-objects/2657225)
**Author:** [@9Evgeny9](https://forums.unrealengine.com/u/9Evgeny9)\ **Replies:** 3\ **Last updated:** [September 17, 2025, 2:35pm UTC](https://forums.unrealengine.com/t/broken-lighmaps-gpu-lightmass-after-changing-3060ti-5070ti-totally-black-objects/2657225 "2025-09-17T14:35:40Z")
I have an scene. Lighting is good, lightmaps are perfect for me. All scene made in 5.5.3 with 3060Ti. I upgrade card to 5070Ti, NOTHING changed in scene, so objects are totally black after re-building gpu lightmass. … [Previous page](https://forums.unrealengine.com/c/development-discussion/rendering/36.md?page=88) [Next page](https://forums.unrealengine.com/c/development-discussion/rendering/36.md?page=90)