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…	2344	143556	March 1, 2026
RAD Game Tools’ Oodle—cross-platform data compression solutions unreal-engine	29	15419	November 17, 2021
How do I make a opacity mask on Nanite objects? question , unreal-engine	1	4	March 10, 2026
Shadow issue. Lumen/VSM question , unreal-engine	0	3	March 10, 2026
Skylight Broken question , unreal-engine	0	5	March 10, 2026
Screen Rendering Black UNLESS Level Sequence Is Opened While Debugging (UE 4.27) question , unreal-engine	2	3	March 10, 2026
Show actor in scene capture only question , unreal-engine	2	19	March 10, 2026
Weird Difference Between SM5 and SM6? question , unreal-engine	0	17	March 9, 2026
How to prevent SkyAtmosphere appearing in scene captures? unreal-engine	6	1782	March 9, 2026
UE5 PC black screen and 100% fans question , unreal-engine	2	12	March 9, 2026
Metallic value shown in Ray Tracing Debug visualization appears gamma corrected compared to the actual input value question , viewport , Debugging , unreal-engine , Ray-Tracing , metallic	0	11	March 9, 2026
Epic's GPUlightmass unreal-engine	857	71286	March 9, 2026
Trees and grass create shadows that glare, create noise and shimmer. question , unreal-engine	4	74	March 9, 2026
Shot/Camera "no shot" When Rendering Level Sequence in Movie Render Queue question , Rendering , unreal-engine , Render , UE5-0	36	16279	March 9, 2026
Packed Level Actors or Level Instances with baked lightmaps question , editor , Rendering , unreal-engine	7	1155	March 8, 2026
WPO shadow bug when used in Instant static mesh question , bug-report , unreal-engine	0	15	March 8, 2026
Twinmotion 2025 crashes on Path Tracer export above 2K (worked fine in 2024) question , twinmotion	16	737	March 8, 2026
Shadow Artifacts question , unreal-engine	4	36	March 7, 2026
Nanite Foliage and 5.6 unreal-engine	1	27	March 7, 2026
Why do I get these strange artifacts switching from Lumen to GPU lightmass Baked GI? question , unreal-engine	1	81	March 7, 2026
PNG with Alpha: How do you get them to work? unreal-engine	12	41543	March 7, 2026
Light specular reflections visible through walls question , Reflections , Lighting , Rendering , specular , unreal-engine	3	59	March 6, 2026
Pixelated textures on Oculus Quest unreal-engine	3	1054	March 6, 2026
Having issues using Quixel Megaplants/Nanite Foliage with Pathtracer? Nanite , Foliage , skeletalmesh , unreal-engine	1	23	March 6, 2026
exr renders question , Rendering , unreal-engine	2	41	March 6, 2026
Rendering Albedo, Roughness, Specular passes unreal-engine	2	36	March 6, 2026
animated 360 camera render unreal-engine	0	7	March 6, 2026
Green lightmap density still blocky shadows question , unreal-engine	1	19	March 6, 2026
Leaks and "dirty" baked shadows question , unreal-engine	0	15	March 6, 2026
Why are my rtxgi light probes black (it does not reflect light) question , unreal-engine	1	175	March 6, 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…