Unreal Engine Issues
Unreal Engine Issues
Material Instance values lost when using Material Parameters inside of multiple Material Functions
UE - Rendering Architecture - Materials - Mar 30, 2018Material Instance parameters (that derive from parents using material functions) can have their data shifted or not saved. ...
depth calculation is not functioning properly on mobile ES 3.1 preview
UE - Platform - Mobile - Feb 21, 2023In 5.1.1, the depth calculation is not functioning properly on mobile ES 3.1 preview, resulting in reflections occurring in areas where they should not. When checking with RenderDoc in ES 3.1 Previ ...
Upgrading from 4.6 to 4.7 can cause the loss of functionality for blueprints
UE - Gameplay - Blueprint - Mar 8, 2015When the user clicks PIE the project functions as intended (the mummy rotates to follow the player). However, when the user plays in Standalone the mummy no longer rotates properly. ...
AI Controller Possess Function Called When Opening a Character Blueprint with AutoPossessAI Set to Spawned
UE - AI - Apr 11, 2017AI Controllers' Possess function is being called when opening a blueprint that has the Auto Possess AI option set to Spawned. ...
Recent change to Material Expression code missing a case for "exp2" function in switch (cpp)
UE - Editor - Content Pipeline - Datasmith - Mar 4, 2024The function "FMaterialDerivativeAutogen::GetFunc1ReturnType(...)" does not have a case for "EFunc1::Exp2". Also found in Release-5.4, CL: 331987674 ...
Thin Translucent materials opaque with FS lighting mode and Output velocities active
UE - Rendering Architecture - Materials - Nov 15, 2021Im not 100% sure this is a combination of settings that "should" work anyway, but need someone to have a look.Thin TranslucencyOutput velocities during base passForward Shading lighting modeProject ...
BP function node inputs can unintentionally add or clobber metadata
UE - Gameplay - Blueprint - Dec 19, 2018Blueprint inputs are added to nodes as metadata, with the key set to the pin name and the value set to the default for that pin. Since blueprint functions allow you to name your own input pins, this ...
Rect light LTC textures fail to load when cooking with bSharedLinearTextureEncoding enabled
UE - Texture - Apr 2, 2025When running a build with bSharedLinearTextureEncoding enabled, View.GGXLTCMatTexture and View.GGXLTCAmpTexture are pointing at the black texture fallback, which affects correctness of rect lighting ...
Forward Rendering Stationary Light Artifact
UE - Graphics Features - May 11, 2018The user who reported the issue has provided a video that also shows the issue: [Link Removed] ...
Custom Primitive Data are not (fully) functional with Instanced Static Mesh components
UE - Graphics Features - Mar 29, 2022If the ISM component is not in a blueprint, but added directly inside the level, the CPD works. If the CPD value is set from a construction script through either the Default or Transient function, i ...