Unreal Engine Issues
Unreal Engine Issues
Incorrect render target index assignment in GLSLBackend
UE - Graphics Features - May 18, 2018While investigating [Link Removed], I have found that GLSLBackend always automatically generates render target location indices, regardless of user-specified ones via SV_TargetX HLSL semantics. Rel ...
Packaging a runtime plugin in a Blueprint project causes some Editor files to be deleted
UE - Foundation - Cpp Tools - Oct 22, 2018Attempting to package a runtime plugin (does not occur with a Development plugin) in a Blueprint project fails in 4.21 Preview 2. This also causes some Editor files to be deleted, including the Modu ...
Project no longer builds when .cc file is included in the project
UE - Foundation - Cpp Tools - Jan 15, 2019Including files with a .cc extension instead of .cpp in a code project used to build fine in Visual Studio. This is no longer the case in 4.21.2. The error message that results indicates that only C ...
UMG Widgets containing child widgets that have bound animations fail to save
UE - Editor - UI Systems - Jan 10, 2020Adding a child widget that contains a bound animation to a separate widget blueprint results in failure to save. Working in 4.22.3 Tested in: 4.22.3 CL#7053642, 4.24.1 CL#10757647, 4.25 CL#108892 ...
[AI] Navmesh tiles on different layers get removed while streaming out in WP Dynamic Modifiers Only navmesh
UE - Runtime - Character - Feb 6, 2025Streaming out the navmesh and streaming the area back into the world before the GC runs causes the navmesh streamed back into the world to only have navmesh tiles on a layer with tiles that would b ...
Rect light LTC textures fail to load when cooking with bSharedLinearTextureEncoding enabled
UE - Texture - Apr 2, 2025When running a build with bSharedLinearTextureEncoding enabled, View.GGXLTCMatTexture and View.GGXLTCAmpTexture are pointing at the black texture fallback, which affects correctness of rect lighting ...
Translucent Surface Material and Additive Particles not rendering on Metal in Shipping/Distribution
UE - Platform - Mobile - Oct 22, 2015Certain Translucent Materials with Surface Lighting Models and Additive Material based Particle Systems will not render in Shipping/Distribution configuration using Metal Rendering on an iPhone 6*. ...
Preview Meshes in Material Instances lose their association to material on close.
UE - Rendering - Architecture - Materials - Aug 13, 2015When you assign a Preview Mesh to a Material Instance, save and close the instance, on reopening instance, the Preview Mesh will not retain connection to the Instance and will revert back to its ass ...
Setting scale to 0 in any direction breaks overlap events
UE - Simulation - Physics - May 26, 2015When the scale of an actor is set to 0 in either X, Y or Z any overlap events will fail to trigger overlap events. ...
[MAC][OPENGL][METAL]: Investigate why planar reflections on translucent surfaces may not be working
Tools - Jun 29, 2015See Comments. User reported planar reflections aren't being applied to translucent materials on Mac OpenGL, which may also affect Linux OpenGL and Mac Metal. Need to investigate what this feature r ...