r.SupportPointLightWholeSceneShadows Set to False Causes Crash When Trying to Place a PointLight

Rendering - Jul 25, 2018

If you disable Support PointLightWholeSceneShadows and try to place a point light in a level the editor will crash.  Current work around is put shadows to low from engine scalability settings. Wor ...

Crash On Startup If a Cubemap Texture For a Skylight Is Set In The Constructor

Rendering - Jul 23, 2018

Crash on startup If a cubemap texture for a skylight is set in the constructor.  Attached images of where the user thinks the crash is coming from. Works Properly in 4.19 CL# 4033788 Found in 4.20 ...

NaN in eye adaptation

Rendering - Jul 23, 2018

What happens is eye adaptation may sample outside view rect, and end up with NaN in eye adaptation buffer, that effectively stays there forever, generating black screen. ...

Volumetric Lightmap grid uneven placement over flat floor

Rendering - Jul 17, 2018

https://udn.unrealengine.com/questions/441682/volumetric-lightmap-grid-anomaly.html Certain maps have large gaps in Volumetric Lightmap cell density where even density is expected.   A repro map ...

Object Scale Material Node Returning Incorrect Information When Rotated to Certain Angles

Rendering - Jul 17, 2018

When using the object scale node in a material it will return incorrect values if rotated to certain angles. Found in 4.19 CL# 4033788, 4.20 Preview 20 CL# 4173640, 4.21 CL# 4209927 ...

When "Support Material Layers" is Enabled Material Instance Parameter Values Reset to Default Value When Override is Unchecked

Rendering - Jul 14, 2018

If "Support Material Layers" is enabled, every time you uncheck an overridden parameter box in a material instance the value of that parameter will reset to its parent's default value instead of sta ...

Light Function Material with Volumetric Fog Causes Screen-Space Banding

Rendering - Jul 12, 2018

With a light function being used on a light and volumetric fog enabled if you move the camera around it will cause screen-space banding at the edges of the screen. Found in 4.19 CL# 4033788, 4.20 P ...

Rect Lights does not illuminate Volumetric Fog except at extreme intensities

Rendering - Jul 9, 2018

Rectangular Area Lights require extremely high values in order to illuminate Volumetric Fog and Volumetric Materials. This means they do not appear to match the output of other light types of identi ...

Cine Camera focus does not blur transparent materials

Rendering - Jul 9, 2018

The cine camera focus does not blur transparent materials. Found In 4.18 CL# 3832480, 4.19 CL# 4033788, 4.20 Preview 5 CL# 4173640, 4.21 CL# 4195822 ...

Speedtree shader node broken in a Shipping package.

Rendering - Jul 6, 2018

I attached the 4.19 and 4.20 version of the project. The trees have no leaves when packaging with Shipping in 4.20 preview 5. It works fine in 4.19. ...