Unreal Engine Issues
Unreal Engine Issues
Crash in RHIBreadcrumbs during loading of Bundled PSO Cache if capturing an Insights trace on Win64 Development
UE - Rendering Architecture - RHI - Feb 17, 2025When compiling a PSO, RHI Breadcrumbs can be fed a bad FRHIBreadcrumbNode, resulting in reading random memory and crashing during the recursive node iteration. This only happens when tracing. The i ...
Bundled compute PSO compilation stalling tender thread
UE - Rendering Architecture - RHI - Feb 13, 2025EA Motive has pointed out a potential bug they found related task graph synchronization and when compiling compute PSOs: [Link Removed]. From the screenshot they sent over, it seems that a task grap ...
D3D12 Does Not Correctly Validate Static Uniform Buffers Correctly
UE - Rendering Architecture - RHI - Feb 12, 2025When adding a Uniform Buffer Struct that has one 4x4 matrix to a mesh pass, validation will fail, due to a Uniform Buffer Struct mismatch. This can be reproduced by adding a mesh pass in project-si ...
5.4, FRHIMemoryPool leaks memory
UE - Rendering Architecture - RHI - Feb 12, 2025FRHIMemoryPool will leak data when it is destroyed. "FRHIMemoryPool::Init()" will create "FRHIMemoryPool::DesiredAllocationPoolSize" new "FRHIPoolAllocationData" objects, stored in "FRHIMemoryPool: ...
Bindless Textures do not mip stream as expected
UE - Rendering Architecture - RHI - Jan 29, 2025Bindless textures do not appear to stream mip levels. This issue is separate from an already reported bindless virtual texture streaming issue. When the editor is freshly launched or when mip level ...
Fix a crash in Callback_ResolveMarker when handing a GPU crash
UE - Rendering Architecture - RHI - Jan 20, 2025Licensees have reported crashes being triggered while the engine is resolving debug markers for an Nvidia Aftermath dump. This makes it difficult to properly investigate crashes ...
FRenderThreadCommandPipe::EnqueueAndLaunch does not properly capture/reapply LLM Context in all situations
UE - Rendering Architecture - RHI - Dec 3, 2024When multiple render commands are enqueued before the graph task runs for a prior enqueued command, the new commands will be put into the Queue for the task to run and no context is captured. When t ...
CreateD3D12Texture causes the Low Level Memory system to register two allocations for the same pointer on the same track channel
UE - Rendering Architecture - RHI - Oct 31, 2024CreateD3D12Texture 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
UE - Rendering Architecture - RHI - Oct 23, 2024D3D12Texture::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 ...
[CrashReport][Assert] UnrealEditor-D3D12RHI!FD3D12ResourceLocation::ReleaseResource() [Engine/Source/Runtime/D3D12RHI/Private/D3D12Resources.cpp:1392]
UE - Rendering Architecture - RHI - Oct 22, 2024Users affected: 73 Total occurrences: 156 Last occurrence: October 22nd 2024, 9:59:58 am First occurrence: October 2nd 2024, 4:53:30 pm Latest version: ++UE5+Release-5.5-CL-36679577 Platform: Win64 ...