Use Deferred Shading (r.Mobile.ShadingPath=1)

Enable DBuffer Decal

All Lights’s mobility is Static

Decal Material settings : 

  • Material Domain - Deferred Decal
  • Blend Mode - Translucent
  • Decal Blend Mode - DBuffer Translucent Color

Decal is not visible when the metallic value of the metal responding to Decal is zero.

Steps to Reproduce
  1. Open “[MyProject]/Config/DefaultEngine.ini” file
  2. Add “r.Mobile.ShadingPath=1”
  3. Open “Project Settings”
  4. Enable “DBuffer Decal”
  5. Enable “Support armv7”
  6. Enable “Support Vulkan”
  7. Restart if neccessary
  8. Change All of Lights’s mobility to “Static” 
  9. Build Lighting
  10. View Vulkan Mobile Preview

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Won't Fix
ComponentUE - Platform - Mobile
Affects Versions4.26
Target Fix5.1
CreatedJul 22, 2021
ResolvedAug 9, 2022
UpdatedAug 30, 2022