Exposure Metering Mode "Auto Exposure Basic" Disables Histogram Min/Max Control

Rendering - Oct 11, 2018

Auto Exposure Basic disables histogram min/max controls. Working as expected in 4.19 CL# 4033788 and 4.20 CL# 4369336 Found in 4.21 Preview 1 CL# 4435822 and 4.22 CL# 4448303 This is a regression ...

Editor Crashes when enabling Vertex Colors on an imported Skeletal Mesh with Morph Target Animations

Rendering - Oct 11, 2018

Licensee wants to be able to import skeletal meshes which have Vertex Colours (their entire game is Vertex Coloured) and Morph Target animation, but they're seeing a crash when toggling Vertex Color ...

Lighting Only Affects Tilemaps From One Direction

Rendering - Oct 9, 2018

Lighting only affects tilemaps from one direction.  Found in 4.19 CL# 4033788, 4.20 CL# 4369336, 4.22 CL# 4435744 ...

Cinematic DOF Does Not Work With TemporalAA Upsampling Enabled

Rendering - Oct 9, 2018

Cinematic DOF does not work correctly if TemporalAA Upsampling is enabled. Standard Circle DOF works as expected with Upsampling. However, enabling the New DOF Algorithm produces almost no blur when ...

Lightmap Density Of Imported FBX Offsetting When Lighting Is Built

Rendering - Oct 8, 2018

Lightmap density of imported fbxs will be offset when lighting is built.  Working as expected in 4.19 CL# 4033788 Found in 4.20 CL# 4369336, 4.22 CL# 4433008 This is a regression  ...

Race condition whilst cooking material layers: Invalid DDC key

Rendering - Oct 5, 2018

When cooking the DDC key for a material layers parameter set may become invalid which causes issues reading/writing to the global material shader map and can lead to a crash. See original UDN post f ...

Foliage Lightmaps Are Incorrect When Using a Precomputed Lighting Scenario

Rendering - Oct 2, 2018

Foliage lightmaps will not match properly to the lighting when using a lighting scenario. They will look normal if you select the Foliage tool but in PIE they will still be incorrect. Working as ex ...

Translucent Materials Receiving Incorrect Shadows in Forward Shading

Rendering - Oct 2, 2018

Translucent Materials will receive incorrect shadows in forward shading. This is working as expected in 4.18 CL# 3832480 Found in 4.19 CL# 4033788, 4.20 CL# 4369336, 4.21 CL# 4408769, 4.22 CL# 4413 ...

Static Mesh 's Light Map Coordinate Index set to 4 and execute a light build, the result will be incorrect.

Rendering - Oct 1, 2018

Light Map Resolution is set to a small value (4 or 8), it will build normally. ...

Web Browser UMG Widget Does Not Work in DX12

Rendering - Sep 28, 2018

The Web Browser UMG Widget does not work in DX12. Found in 4.20 CL# 4369336 and 4.21 CL# 4404204 ...