Color space transform in the UI composition is incorrect on DX12 HDR (r.HDR.UI.CompositeMode=1)

UE - Rendering - Jun 11, 2021

Color space conversion in the UI composition is incorrect on DX12 HDR. In the main() function In CompositeUIPixelShader.usf, you can see the following color space transform.// sRGB -> RRT -> ODT ...

Update to AndroidX

UE - Platform - Mobile - Jun 11, 2021

Upgrade to use AndroidX ...

Mouse collision is offset when fullscreen at non-regular resolutions

UE - Editor - UI Systems - Slate - Jun 10, 2021

The source of the issue is differences between viewport resolution and screen resolution. Cursor position is reported w.r.t. screen space, but we need to map that value to the viewport to correctly ...

Masked areas render as black if material uses any virtual texture

UE - Rendering - Jun 9, 2021

Masked materials that sample virtual texture don't function correctly. They render black instead of masked. This happens when there is no depth pre pass enabled. Automatically enabling depth pre p ...

Hair sampling/aliasing in editor with sequencer

UE - Rendering - Jun 9, 2021

UPD: affected version 4.26 so regression for 4.27 is no ...

Crash when using EditConditionHides with a struct in an array

UE - Editor - UX - Jun 8, 2021

A crash can occur in FStructurePropertyNode::GetValuePtrOfInstance when using EditConditionHides with arrays of structs. When deleting an element from the array, ParentBaseAddress will be null. ...

Staging Directory in Project Packaging Settings should not be saved as absolute path

UE - Foundation - Core - Cooker - Jun 8, 2021

When you package a project via the editor, it updates the ProjectPackagingSettings to set the StagingDirectory to the specific one chosen by the user. However, it saves this path as an absolute path ...

Child blueprint classes do not inherit "ClassGroup" from their native parents

UE - Gameplay - Blueprint Editor - Jun 7, 2021

When creating a blueprint component based off of a custom native class that utilizes the ClassGroup metadata  ...

HDR is washed out or broken across multiple platforms

UE - Rendering - Jun 4, 2021

Default HDR images look incorrect for different reasons on each platform: PC SDR:[Image Removed] PC HDR:[Image Removed] ...