Rendering

Topic	Replies	Views	Activity
Lumen GI and Reflections feedback thread Lumen , unreal-engine , Staff-Pick-UE Hi everyone, I’m starting this thread for feedback and discussion about Lumen GI and Reflections in UE5. We’re under a lot of pressure with internal deadlines so can’t promise responses, but we will read everything here…	2380	168700	July 25, 2026
RAD Game Tools’ Oodle—cross-platform data compression solutions unreal-engine	29	16332	November 17, 2021
UE 5.8 is Hierachical Instance meshes not supported for Lumen? question , unreal-engine	3	65	October 19, 2026
How to prevent pausing caused by scene capture? question , Rendering , unreal-engine	3	142	October 19, 2026
How do I get a TArray of grayscale pixels from a Render Target question , CPP , Rendering , memory , unreal-engine	2	1075	October 19, 2026
Resource->ReadPixels is very slow... faster way? question , CPP , Rendering , unreal-engine , render-target , rendertarget	18	8844	October 19, 2026
Wierd shadow apears on mesh question , unreal-engine	1	24	October 19, 2026
Light Flickering with Cinematic question , unreal-engine	1	37	October 19, 2026
Unreal Engine Buffers/Passing values. Blueprint , InsideUnreal , question , CPP , Shaders , Post-Processing , Rendering , unreal-engine , Render , buffer , Post-Process , data	3	53	October 16, 2026
Translucent Wall Leaks Light question , unreal-engine	2	31	October 16, 2026
How to adjust the complex collision body to align with the original vertex positions of the grid body question , unreal-engine	2	34	October 16, 2026
Path Tracing Artifiacts question , unreal-engine	2	36	October 16, 2026
Help with static mesh importing very low despite high polygons... question , unreal-engine	1	39	October 16, 2026
UE 5.8 – Skeletal Meshes lose shadows with MegaLights at GI Medium (fix) Lumen , Shadows , unreal-engine , Scalability , scalability-settings , MegaLights	0	58	October 15, 2026
Screen Capture Not Rendering Shadow Blueprint , question , Lighting , Rendering , unreal-engine	5	240	October 15, 2026
How can I extract and export SceneDepth and SceneColor from SceneCapture2D in a Blueprint? question , Rendering , unreal-engine , UE5-0	7	1619	October 15, 2026
Screenshot at runtime without stutter question , CPP , Rendering , unreal-engine , engine	3	1265	October 15, 2026
Read Pixel outputs different results depending on platform? question , unreal-engine , Mobile , render-target , windows , UE-5	10	772	October 15, 2026
UE 5.7 – Substrate + Clear Coat + Lumen HWRT causes colorfill square artifact question , bug-report , unreal-engine	5	294	October 15, 2026
Incorrect Rendering results with Negative Scale When Using Packaged Level Actor / FastGeo ISMTransformer unreal-engine , hism	2	74	October 15, 2026
Depth Fade fog bug question , unreal-engine	3	81	October 14, 2026
Epic's GPUlightmass unreal-engine	1035	89903	October 14, 2026
Screen Space Reflection worse in 5.7 compared to 5.3 question , unreal-engine	1	62	October 14, 2026
Distance Field shader doesn't appear in editor but does when changing values question , unreal-engine	1	36	October 14, 2026
Emissive not rendering on a transparent background PNG with movie render queue question , Rendering , unreal-engine , logo , Render , alpha , emissive , sequence , png	14	206	October 14, 2026
UE5.8: Lumen Hardware Ray Tracing shows abnormal lighting and reflection results when running in the Editor on AMD 6000+ series GPUs (images attached). Is there a way to fix this issue? question , unreal-engine	2	84	October 14, 2026
Emissive material gone crazy question , unreal-engine	6	129	October 14, 2026
World Space Widget becomes darker randomly / mouse movement sometimes fixes it Blueprint , fortnite , unreal-editor-for-fortnite	2	25	October 13, 2026
Camera Cut binding being Overwritten question , Rendering , unreal-engine	2	74	October 13, 2026
Bug Report: GPU remains idle (0-1%) and render time stalls when exporting Lumen video with MP4 video textures twinmotion	1	47	October 13, 2026

Lumen GI and Reflections feedback thread

Lumen , unreal-engine , Staff-Pick-UE

Hi everyone, I’m starting this thread for feedback and discussion about Lumen GI and Reflections in UE5. We’re under a lot of pressure with internal deadlines so can’t promise responses, but we will read everything here…