Developer Notes

This issue has been closed as 'Won't Fix' due to an extended period of time without updates. If this issue is important to you please let us know by posting on the AnswerHub or UDN, and Epic will re-open the ticket for further review.


When a material with the exact same values are input into the Base color, Specular, Metallic, and Roughness they display differently in the Buffer Visualizer Overview.

Steps to Reproduce
  1. Start Editor (any project)
  2. Create new level > Empty Level
  3. Create Material > in material graph add a Linear gradient node
  4. Pull from UGradient Pin and plug into Base Color, Metallic, Specular, and Roughness > Compile
  5. Drag a cube into the level from the basic tab and apply material
  6. Apply material you just created and click view mode > Buffer Visualization > Overview

The roughness visuals differ from the other maps despite same exact input. (See Screenshot)

The roughness map looks exactly the same as the other maps.

Have Comments or More Details?

Head over to the existing Questions & Answers thread and let us know what's up.

Login to Vote

Won't Fix
ComponentUE - Rendering
Affects Versions4.
CreatedJul 25, 2016
ResolvedFeb 17, 2017
UpdatedJan 13, 2021