Unreal Engine Issues
Unreal Engine Issues
SceneTexture:WorldNormal Expression failing to Compile in World Align Blend Function
UE - Graphics Features - Jul 18, 2017While attempting to modify the World Align Blend function in order to map decals to a surface based on a world vector input, I discovered the function fails to compile while passing the SceneTexture ...
SColorGradientEditor Does Not Trigger OnCurveChanged Events
Tools - Feb 26, 2016User Description: "SCurveEditor, class which is used for float ramps, seems to trigger OnCurveChanged events for the underlying curve; however SColorGradientEditor (constructed by SCurveEditor) seem ...
GPU-ARM Mali 400 series phones will render an Opaque Unlit Material as black
UE - Platform - Mobile - Feb 12, 2016ARM Mali 400 Series GPUs are rendering Opaque Unlit Materials as Black instead of the designated color. This is a *regression* from 4.10.2.Devices where Issue OccursDevice NameBrandBug Description ...
Physics not reacting correctly with physical material if velocity is not high enough
UE - Simulation - Physics - Feb 3, 2015There are issues with the way Physics is being handled with physical materials. Having a physical material setup with a restitution of 1 and a high max depenetration value will result in no bounce. ...
VR billboard problems
UE - Platform - XR - May 3, 2018https://udn.unrealengine.com/questions/429242/419-psvr-dynamic-resolution.html "We are experiencing a rendering regression in PSVR when upgrading from 4.17 to 4.19. A MaterialBillboardComponent tha ...
DynamicMeshBuilder.cpp does not add a value to the InTangentY variable in the AddVertex function
UE - Graphics Features - Mar 4, 2021This was found as a result of Licensees doing a Code Review of the Engine code. Here's the code snippet in question. It seems to be missing a line similar to Vertex->TangentY = InTangentY;.: int32 ...
Substrate- black outline appears when using sharp contrast mask to blend slabs
UE - Graphics Features - Oct 4, 2024Substrate materials have a thin border of black pixels between slabs. These lines can be made more apparent by changing the Diffuse Albedo color of the two slabs to pure white. This will remove the ...
"Allow Custom Depth Writes" Creates Artifacts In Depth Buffer
UE - Graphics Features - Jan 5, 2017When a transparent material has "Allow Custom Depth Writes" enabled it is prone to have artifacts in the custom depth buffer under specific conditions. The conditions are as follows:The translucent ...
[CrashReport] Assertion failed: !PinRef->bWasTrashed - UEdGraphPin::SerializePin()
UE - Gameplay - Blueprint - Sep 8, 2017This is a common and longstanding crash that has affected more than 200 users since at least 4.15. This crashGroup was previously associated with [Link Removed], but that specific repro case has be ...
[CrashReport] ULevel::GetWorldSettings - UMaterialFunctionThumbnailRenderer::Draw
Tools - Oct 30, 2017This is a common crash that has occurred since at least 4.16. The callstack is nearly identical to [Link Removed], which appears to be fixed in 4.18; and [Link Removed], which has not. The differen ...