Screen Space Global Illumination appears really dark when using the Vulkan RHI on Windows and Linux. This behavior is also present in a Shipping build.

This was reported and tested on 4.24.1 (CL-10757647) and reproduced in Main 4.25 (CL-11062379). The results in Main are much clearer than in 4.24

Steps to Reproduce
  1. Open the UE4 Editor on Linux or Windows (-vulkan) and create a Third Person project
  2. Run the r.SSGI.Enable 1 command in PIE or in a Packaged Shipping build

Results: Screen goes dark and fuzzy (see attached)

Expected: Smooth SSGI

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Cannot Reproduce
ComponentUE - Rendering - RHI
Affects Versions4.24.14.25
Target Fix5.0
CreatedJan 20, 2020
ResolvedJan 20, 2022
UpdatedJan 21, 2022