Description

EA 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 graph event is being inserted between the PSO compilation task and the RHI commandlist dispatch step, which causes the render thread to block until the task is completed. This can be fixed by modifying PipelineStateCache::GetAndOrCreateComputePipelineState to reflect the same behavior of PipelineStateCache::GetAndOrCreateGraphicsPipelineState

 

[Image Removed]

 

Steps to Reproduce

This was an issue reported by a licensee and is therefore difficult to reproduce

Have Comments or More Details?

There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-247828 in the post.

1
Login to Vote

Fixed
ComponentUE - Rendering Architecture - RHI
Affects Versions5.55.4.4
Target Fix5.5.4
Fix Commit39988718
CreatedFeb 13, 2025
ResolvedFeb 14, 2025
UpdatedFeb 20, 2025
View Jira Issue