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 setting a material to Use Material Attributes and then feeding in a Refraction value with MakeMaterialAttributes, the refraction doesn't work properly

Reported in 4.8, but I tested in Main as well and got the same results.

Steps to Reproduce

(See attached images)
1. Create a material as shown with refraction of 1.5
2. Assign to a mesh and note the refraction effect
3. Create another material as shown in the second image with the same settings, but using MakeMaterialAttributes instead
4. Assign to a mesh and note that there is no refraction effect

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Won't Fix
ComponentUE - Graphics Features
Affects Versions4.224.234.24
CreatedSep 14, 2015
ResolvedAug 18, 2021
UpdatedAug 18, 2021
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