Unreal Engine Issues
Unreal Engine Issues
crash at checkUERenderCommandPipeIsReplaying in RenderScenecpp
UE - Rendering Architecture - Jul 15, 2024Drawing a material to a render target when that material samples an RVT can cause an editor crash. In our testing, the check() did not always occur on the first PIE session, but would always occur ...
UE5.4 Regression - crash when disabling shader optimization while raytracing is enabled on D3D12
UE - Rendering Architecture - Shaders - Jul 15, 2024Certain interactions between a Rect Light with a Light Function and a Post-Process volume lead to a check() when compiling a Ray Tracing PSO for tracing lights. This check() only happens when shader ...
Compilation errors with UE_NET_ENABLE_REPLICATIONREADER_LOG enabled
UE - Networking - Iris - Jul 15, 2024Enabling UE_NET_ENABLE_REPLICATIONREADER_LOG results in the following errors: {{4>[1/5] Compile [x64] ReplicationReader.cpp 4>D:\P4V\UE5-Main\Engine\Source\Runtime\Experimental\Iris\Core\Private\Ir ...
Niagara compiler error, branch in custom hlsl doesn't work properly
UE - Niagara - Scripting - Jul 15, 2024Material ParticleRandom node doesn't have proper value returned in specific case
UE - Niagara - Jul 14, 2024Natively declared Gameplay Tags aren't counted by Reference Viewer when set default by ctor
UE - Gameplay - Jul 11, 2024Similar to Issue 199247 ([Link Removed]), Natively declared Gameplay Tags aren't counted by Reference Viewer when used in a variable set in a C++ ctor. ...
Flickering shadows/GI when DrawMaterialToRenderTarget is called per tick in PIE
UE - Rendering Architecture - Jul 11, 2024When DrawMaterialToRenderTarget function is called on tick and actors are spawned in game, the lumen shadow/GI visually flickers. Debugging shows that the lumen screen probes are flickering as well. ...
Sandbox Visitors can fail on empty directories on non-Windows platforms
UE - Foundation - Jul 11, 2024When a Sandbox Visitor checks a directory and it doesn't exist, it returns true on Windows and false on other platforms. The code that uses the result of this check, IterateDirectory, doesn't conti ...
Integer overflow in NaniteBuilder can lead to an editor crash on certain meshes
UE - Graphics Features - Nanite - Jul 10, 2024NaniteBuilder uses an int8 type for ExternalEdges and counts adjacency with a int32. The bug stems for the cast to int8 when adding the adjacency count into the ExternalEdges array. The precision l ...
PCG Graph callback fails after compiling blueprint
UE - World Creation - Procedural Tools - Jul 9, 2024PCG graph callbacks in BP do not appear to get called correctly after the blueprint is compiled. ...