Unreal Engine Issues

CreateD3D12Texture causes the Low Level Memory system to register two allocations for the same pointer on the same track channel

CreateD3D12Texture causes two OnLowLevelAllocs in LLM to be called with the same pointer and the same channel, leading to a warning. LLM WARNING: Replacing allocation in tracking map. Alloc/Free Mi ...

D3D12Texture::Lock incorrectly sizes staging buffer when locking block compressed resources

D3D12Texture::Lock computes the size of the staging buffer on Line 1541 of D3D12Texture.cpp. This size uses the RowPitch, which for BCn resources encapsulates the size in bytes of a single row of bl ...

iOS package with Metal Desktop Renderer enabled crashes on iPhone

iOS package with Metal Desktop Renderer enabled crashes on iPhoneThis issue does not occur if Metal Desktop Renderer is disabled ...

Race condition between D3D12 Buffer Defrag and View creation

A UDN user reported that the D3D12 resource allocator defragmentation operation races with view creation. View creation needs to be always deferred to the RHI thread. ...

FVulkanDynamicRHI::RHIReadSurfaceData​ incorrect for FLinearColor​.

The FLinearColor implementation for FVulkanDynamicRHI is incorrect. FLinearColor stores 32 bit floats in linear space, while FColor stores 8 bit integers encoded with sRGB applied. The implementatio ...

PSO Creation hangs on task in Shipping build

Running with `r.AsyncPipelineCompile=0` causes the issue not to happen. It fails to open about 4 times out of 5. No such problem in development build., it always succeeds. We noticed that if we de ...

Crash when copying PF_Stencil format from the GPU to the CPU

This is a crash related to copying depth-stencil render targets to the CPU. See linked UDN for more info. ...

Assert when toggling RHIThread

Crashes occur when creating a static texture from a non-HDR Cube Render Target in DirectX12

While working with DirectX 12 in the project settings, the editor crashes by check() code when attempting to create a static texture from a non-HDR Cube Render Target asset. This crash doesn't occur ...

Gauntlet test warnings in QAGame Win64 Development BootTest

QAGame Win64 Development BootTest: * Ensure: Ensure condition failed: oldValue == newValue [File:D:\build\++UE5\Sync\Engine\Source\Runtime\Core\Private\HAL\ThreadingBase.cpp] [Line: 311] oldVal ...