Unreal Engine Issues
Unreal Engine Issues
Split Struct Pin on a Function output will return a compiler error
UE - Gameplay - Blueprint - Jan 13, 2015Split Struct Pin on a Function output will return a compiler error: Error Pin New Param 1 X named NewParam1_X doesn't match any parameters of function NewFunction_0 Error Pin New Param 1 Z name ...
Emissive material lighting falloff regression in GPU Lightmass
UE - Graphics Features - Sep 12, 2023Forum user noted that emissive lighting being built with GPU Lightmass is in fact being built, just not around the mesh, but in a larger radius and with reduced strength compared to 5.1.1. They foun ...
Crash when mousing over array parameter in Blueprint function graph while debugging
UE - Gameplay - Blueprint Editor - Mar 3, 2020Mousing over an array input inside a Blueprint function can lead to a crash. For this to occur, the first parameter of the function must be a User Defined Struct. ...
Custom lighting channels ignored when object culled in stereoscopic
UE - Platform - XR - Apr 14, 2016When a light that uses lighting channels is only visible in one view during stereoscopic rendering, it affects the default light channel instead of the assigned one in the view that it's not visible ...
Cannot create a return node with an execution pin only for a function
UE - Gameplay - Blueprint - Apr 20, 2015The user can not create a return node for a function that only has an execution pin if they create the function via the my blueprint panel. However, if they create a function by collapsing down a se ...
Bright Flickering or Black Squares with Rectangle Lights Intersecting Meshes
UE - Graphics Features - May 31, 2024Rect Lights that intersect geometry can produce NaN pixels in SceneColor, which will affect bloom, FXAA, and other future passes. This can lead to large visible artifacts. The NaN values are produc ...
Connecting Blueprint Function Input to Another Node Resets Default Value
UE - Gameplay - Blueprint - Mar 15, 2017Connecting an input of a function in a Blueprint Function Library that has a default value to a node will cause its default value to be reset to 0 when the function is called in another blueprint. ...
Rect light artifacts from NaN pixels on surfaces that are coplanar with light position
UE - Graphics Features - May 10, 2024Rect lights cause artifacts (nan pixels) on pixels of surfaces that are coplanar with light position. In RectLight.ush, in RectIrradianceLambert, at line 106, c30 is -1, so rsqrt(0) causes a nan to ...
[Metal-Epic:iOS] Directional Light graphics corruption when using the Metal Desktop Forward Renderer on iOS
UE - Graphics Features - Jan 25, 2018When enabling the Metal Desktop Forward Renderer on iOS, Directional Light's with Light Shaft Bloom enabled will cause full screen graphics corruption when looking at the light source. ...
Translucent light grid injection behavior
UE - Graphics Features - Nov 15, 2024Light injection into the Translucent Light Grid voxels does not use the correct location for clipping or attenuation. Both of these points are outside the voxel that is being updated. Light attenua ...