Niagara effects do not display as expected VR when using instance stereo

UE - Platform - XR - Aug 12, 2019

When using instance stereo it appears that Niagara particles do not render as expected in VR ...

Color obtained in Retainer Box differs from color visible in material preview when set by Vector Parameter

UE - Graphics Features - Aug 12, 2019

Color set by Vector Parameters in a material differs in preview from color obtained in retainer box. Obtained color does not match either sRGB or Linear values of color visible in material preview. ...

The "Random Integer in Range from Stream" returns the same value if the seed is power of 2 of anything above 22.

UE - Foundation - Core - Aug 7, 2019

When using the "Random Integer in Range from Stream" where the seed is a power of 2 after a certain point (2^22) the random integer that is returned is the always the same. If the seed is 2^23 + 1 i ...

Reading data back from rendertarget not working on Android opengles 3.x

UE - Platform - Mobile - Aug 7, 2019

From user: "I believe the issue is deal to the implementation of FAndroidOpenGL, there is no overriding of FOpenGL::SupportsMapBuffer(),which always return from the base FOpenGLES2 method and it is ...

Certain combinations of 'bRenderStatic' and 'bNoSkeletonUpdate' on SkeletalMeshComponent produce undesirable behavior.

UE - Graphics Features - Aug 7, 2019

Issues observed:  - When bRenderStatic is on and bNoSkeletonUpdate is off, CachedMeshDrawCommands takes a significant chunk of time, because the scene primitive transform is being updated every fra ...

Android Client unable to join VOIP Host Session

UE - Online - Aug 6, 2019

Android client is unable to join a VOIP Hosted Session. The following messaging occurs when the Client tries to join a found session on Android:LogInit: BSD_Android: I am localhost (127.0.0.1:0) L ...

FLODUtilities::RegenerateLOD does not account for disabled cloth sections getting stripped

UE - Simulation - Physics - Character - Aug 6, 2019

When FLODUtilities::RegenerateLOD retrieves the ClothBindings, it does not account for disabled cloth sections getting stripped and can connect the Cloth Data to the wrong sections. See FillCloth ...

OnRep_Controller is not called when Controller is set in AController::OnRep_Pawn()

UE - Networking - Aug 6, 2019

We don't call OnRep_Controller after it's set to null in AController::OnRep_Pawn, so overridden implementations won't get called. While it's a little weird to call OnReps explicitly on the client o ...

Procecdural Mesh Components without a material assigned crashes on conversion to Static Mesh

UE - Graphics Features - Aug 6, 2019

This bug doesn't occur in 4.21. The issue is at line 157 in ProceduralMeshComponentDetails.cpp . When the procedural mesh has a material the crash doesn't occur. File location: Runtime/ProceduralMe ...

FPlanarReflectionRenderTarget didn't release RenderTargetTextureRHI

UE - Rendering Architecture - RHI - Aug 6, 2019