Unreal Engine Issues
Unreal Engine Issues
Error during packaging if nativizing a blueprint that contains a TMap with a UserDefinedEnum as a key
UE - Gameplay - Blueprint - Jun 17, 2019Certain Map container calls (e.g. Find, Add) will fail to compile at packaging time if a Blueprint class containing a Map variable with a user-defined enumeration as the key type is nativized. This ...
Instanced static meshes fire an erroneous performance assert about loose parameters.
UE - Graphics Features - Sep 4, 2019"This ensure is intended to catch regressions where rendering programmers add a loose parameter to LocalVertexFactory, breaking dynamic instancing on regular static meshes. InstancedStaticMeshes c ...
BP timelines: when converting internal curve to external, the external curve isn't used until BP is recompiled
UE - Gameplay - Blueprint Editor - Aug 28, 2023Blueprint timelines: when converting an internal curve to an external curve asset, the curve asset's data isn't used until the blueprint is recompiled. This is confusing as there is no indication th ...
'GetClassDefaults' Can Cause Blueprint To Become Modified When Unrelated Blueprint Is Compiled
UE - Gameplay - Blueprint - Sep 22, 2023The stems from a really old change (CL 2948683) to fix [Link Removed]. Compiling ObjectA will call RefreshExternalBlueprintDependencyNodes on its dependent BP, ObjectB_ReferencesA, which reconstru ...
Enabling World Composition Skips Intro Movies
Tools - Jun 24, 2016Startup movies are skipped when World Composition is enabled. Even with the 'Wait for Movies to Complete' option enabled, the startup movie plays for a very short time, and then the level is loaded ...
Moving Landscape causes Crash with Landscape Grass Output in Landscape Material
UE - LD & Modeling - Terrain - Landscape - Jun 16, 2016Editor crashes when utilizing the Landscape Grass Output node within a Material, and then attempting to move the landscape with the material applied. I narrowed this down to being directly related ...
XAudio2 DestroyVoice call causes significant hitching on some architectures
UE - Audio - Aug 10, 2015Another thread: https://answers.unrealengine.com/questions/241358/amd-cpu-very-low-performance-because-ixaudio2sourc.html Note: This not a regression and has existed since our first implementation ...
Shader compile error using Point Lights Nvidia Shield
UE - Platform - Mobile - Jan 19, 2016On the Nvidia Shield (portable with the controller attached) if you have a dynamic directional light and at least one dynamic point light no lights will be rendered in the level. Or even just using ...
Painted Vertex Colors not Passing Color when used with Emissive for Static Lighting Setting
UE - Graphics Features - May 24, 2016When painting Vertex Colors on a mesh, and enabling the 'Emissive for Static Lighting' option, the painted colors are not passed to surfaces receiving the emissive static lighting. The regular emis ...
Auto-weld is Enabled even if the blueprint component is set to Simulate
UE - Simulation - Physics - Jan 4, 2017Auto-weld is Enabled even if the blueprint component is set to Simulate. This only effects blueprint, static mesh actors in the world still disable Auto-weld if set to Simulate. This is a Regressio ...