Description

Encountered a strange issue where switching to RT Translucency on a PPV would cause it to appear incorrect. However, if you swap the viewmode to Path Tracing, it does appear correct. See screenshots and log attached.

Tested regression in //UE5/Release-5.3 @ CL29314046 and the issue does not occur. This is a confirmed regression.

Steps to Reproduce
  1. Create an Archvis template project
  2. Open the Interior level
  3. Navigate to the two translucent spheres
  4. Open the Post Process Volume (PPV) and search for 'Translucency'
  5. Toggle between 'Raster' and 'Ray Tracing'
  6. Notice the differences
  7. Change the view mode to Path Tracing and toggle again between 'Raster' and 'Ray Tracing'

Results: RT Translucency appears broken in Lit viewmode but works in PT viewmode
Expceted: RT Translucency works correct in both Lit and PT viewmodes

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Fixed
ComponentUE - Graphics Features - Ray Tracing
Affects Versions5.4
Target Fix5.5
Fix Commit36444550
CreatedApr 15, 2024
ResolvedSep 19, 2024
UpdatedOct 14, 2024
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