Description

The real time thumbnails are much darker when using forward shading in the editor. You have to open or edit an asset so that the thumbnail updates after enabling forward shading to see the effect. Also, while testing I noticed that if you disable real-time thumbnails prior to changing to forward shading the thumbnails will become black.

Steps to Reproduce
  1. Open a blank project
  2. Duplicate the cube static mesh found in EngineContent>BasicShapes to the content folder
  3. Enable Forward Shading in the project settings and restart editor
  4. When the editor has reloaded open the static mesh in the static mesh editor

RESULT
The thumbnail will update and will become much darker. User Reported Black thumbnails in their case.

EXPECTED
The thumbnail updates with the mesh still clearly visible.

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Fixed
ComponentUE - Graphics Features
Affects Versions4.14.34.15
Target Fix4.17
Fix Commit3480600
Main Commit3511602
CreatedFeb 24, 2017
ResolvedJun 8, 2017
UpdatedApr 27, 2018
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