Chaos No Editor Development Build Errors

UE - Simulation - Physics - Sep 30, 2019

During run-time of a no editor development build using chaos, errors with GeometryCollectionDrawComponent are logged and Geometry Collections remain floating in the air, not fracturing as expected. ...

[Datasmith] [Sketchup] Material maps wrong when using colors or applying materials directly to grouped object

UE - Editor - Content Pipeline - Datasmith - Exporters - Sep 30, 2019

The problem occurs when a material gets added to a group inside sketchup directly instead of individual faces before grouping. The materials that are just colors are doing the same thing. This was ...

Image appears blank when using Export Render Target on Android

UE - Platform - Mobile - Sep 25, 2019

When using the node Export Render Target it appears that the image produces does not display as expected and appears blank when used on Android ...

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 ...

Umask ignored on Linux

UE - Platform - Linux - Aug 28, 2019

UE4 is hardcoded to use 755 for files and directories. See mkdir() in Engine/Source/Runtime/Core/Private/Unix/UnixPlatformFile.cpp This is also repeated for Android, HTML5, and Lumin but i cannot c ...

Using "Collapse to Function" in a const blueprint (such as an anim notify) does not flag the function as const, resulting in a compile error

UE - Gameplay - Blueprint Editor - Aug 28, 2019

You can manually open up the graph settings for the function and check const there, but we should either auto-set const when the function is created, or imply const for all user added functions in a ...

[CrashReport] UE4Editor-D3D11RHI!VerifyD3D11Result(long,char const *,char const *,unsigned int,ID3D11Device *) [D3D11Util.cpp:249]

UE - Rendering Architecture - RHI - Aug 16, 2019

Generated from CrashReporter Updated ticket for [Link Removed] which was stale. ...

Set Order of Additive Anim Type and Force Root Lock cause different results

OLD - Anim - Aug 16, 2019

The order in which Additive Anim Type is set to Mesh Space and Force Root Lock is enabled/disabled changes the end result. This seems to be related to the animation compression and DDC. ...

Severe ghosting on animated objects when camera stops moving in sequences when using path tracer

UE - Graphics Features - Lumen - Aug 2, 2019

Pixels seem to stop updating in the path tracer when a camera stops moving in sequence. Old color values from objects that have moved seem to still affect pixels they should not.  ...