Unreal Engine Issues

UE-187434

Path Tracing shadow artifacts

Path Tracing shadow artifacts

EPS
Description

First picture lit is used

[Image Removed]

Second picture PT is used, this occurs under certain angles of incidence.

[Image Removed]

Steps to Reproduce
  1. Download attached project
  2. Open test project
  3. Observe no artifacts in lit mode from the startup position
  4. Switch to Path Tracing
  5. Observe shadows artifacts on the sphere
    1. Observation Location: 
      BugItGo 205.236980 75.327327 172.541467 -6.200000 -92.599996
-0.000000

Have Comments or More Details?

There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-187434 in the post.

2
Login to Vote
Won't Fix
ComponentUE - Graphics Features - Path Tracer
Affects Versions5.2, 5.3
Target Fix5.6
CreatedMay 31, 2023
ResolvedMay 7, 2025
UpdatedJun 16, 2025
View Jira Issue