Unreal Engine Issues
Unreal Engine Issues
Certain particle effects in ContentExamples pause when looked at on Mac with Metal
UE - Platform - Apple - Aug 20, 2016Certain particle effects in ContentExamples stop playing when looked at from a specific angle. The affected demos are 2.1, 2.4, 2.5, and 2.7 Seen on an Nvidia MacbookPro and AMD MacPro Does not o ...
Subsurface materials display dark lines in the middle of the viewport
UE - Graphics Features - Dec 8, 2017AMD gpus are displaying an issue with subsurface materials. Dark lines appear on the material that run through the middle of the viewport, (See screenshot attached). This was seen on AMD drivers 17. ...
Failed to compile UE4 on Mac using incompatible Xcode version
UE - Platform - Apple - Apr 7, 2017Clone the GitHub repo for 4.15.1, run setup, gpf, then build UE4. Fails to compile due to metal errors. It would be nice if we could produce a warning if the compiler being used is newer than what ...
The Radial Blur Shader Doesn't Look Correct With Raytracing Translucency Enabled
UE - Graphics Features - Lumen - Jan 21, 2020The Radial Blur shader doesn't look correct with ray tracing translucency enabled. Found in 4.24.1 CL#10757647 Reproduced in 4.25 Main CL#11050671 ...
Persona code calling incorrect extenders when building menus.
OLD - Anim - Jan 25, 2017Certain files for building menus is calling the wrong extenders List of known conflicting functions:FSkeletalMeshEditor::ExtendMenu() [Engine\Source\Editor\SkeletalMeshEditor\Private\SkeletalMeshEd ...
AnimCurveCompressionSettings is reset to CompressedRichCurve at editor startup
OLD - Anim - May 21, 2019AnimCurveCompressionSettings's codec is reset to CompressedRichCurve when user open the project, so user can not keep the state changed to UniformlySampled. The following code in the constructor of ...
[GPU Lightmass] bake artifact w/ two actors of same static mesh
UE - Graphics Features - Jun 22, 2022As per a bug report from Pixomondo: if there are two static meshes in the scene and one has a rotation, it gets a GPULM bake artifact as if it is intersecting with the unrotated version of itself. S ...
MoviePipeline: Python Editor example can double-up objects in-scene
UE - Anim - Sequencer - Jan 4, 2022See the UDN for sample project. This is caused by the Editor Python sample not using the UMoviePipelineQueueSubsystem, which (when rendering) blocks the Sequencer from auto-binding to PIE. The fix ...
Alembic Files Import With Blocky UVs
UE - Editor - Content Pipeline - Import and Export - Dec 6, 2019Alembic files imported come in with blocky UVs. Attached is a zip with the files and pictures that show the issue. Found in 4.23.1 CL#9631420 Reproduced in 4.24 Preview 4 CL#10387632, 4.25 Main CL# ...
REGRESSION: HierarchicalInstancedStaticMeshComponent LOD transitions are broken in 4.9 and Main
UE - Graphics Features - Aug 24, 2015While testing another fix I noticed HISM LOD transitions are not working in Main or 4.9 branch. There is no screen-door effect and multiple LODs seem to be rendering simultaneously compared to 4.8. ...