Unreal Engine Issues
Unreal Engine Issues
[MRQ] Simulating in editor during runtime rendering causes an assertion to fail after rendering is done
UE - Graphics Features - Apr 19, 2022Simulating in editor during runtime rendering causes an assertion to fail after rendering is done. Repro Rate: 4/4 Tested this in //UE4/Release-4.27 @ CL#18319896 and the issue did not occur there ...
Android build fails with GPU Lightmass plugin enabled
UE - Platform - Mobile - Nov 5, 2020Packaging for Android fails with the GPU Lightmass plugin enabled. A customer reported this and I was able to successfully repro it, however my callstack was different. I'm attaching my logs and cal ...
Missing info in GPU breadcrumbs and DRED logs
UE - Graphics Features - Apr 21, 2025Some breadcrumbs and D3D12 logs are missing data which should normally be filled in e.g. Breadcrumbs: > PostProcessMaterial %dx%d Material=%s [Active]. After investigating this, there seems to be a ...
Race condition between D3D12 Buffer Defrag and View creation
UE - Rendering Architecture - RHI - Jun 11, 2024A UDN user reported that the D3D12 resource allocator defragmentation operation races with view creation. View creation needs to be always deferred to the RHI thread. ...
StylizedRendering app fails to launch on tvOS
Docs - Samples - Aug 16, 2016StylizedRendering app fails to start on tvOS ...
[CrashReport] UE4Editor_XAudio2!FXAudio2SoundSource::PrepareForInitialization() [xaudio2source.cpp:517]
UE - Audio - Jun 24, 2016joseph.w - attempting to PIE in advanced vehicle blueprint templateCrash when selecting pie ...
Metal - Support 32bit index buffers
UE - Graphics Features - Apr 3, 2015Metal is not taking the non-uniform buffer path for GPU skinning. ...
Using the "-opengl" commandline argument on a client project will trigger an Access Violation breakpoint.
UE - Graphics Features - Dec 3, 2014Running a client in debug mode in Visual Studio with the "-opengl" commandline argument will trigger an Access Violation breakpoint. ...
UAIPerceptionStimuliSourceComponent never registers with required senses
UE - AI - Nov 6, 2015UAIPerceptionStimuliSourceComponent::OnRegister tries to remove nulls from RegisterAsSourceForSenses but the condition in RemoveAllSwap is wrong. It should be SenseClass == nullptr instead. ...