thank you very much for sharing what you ve been able to do! that was useful, and I managed to get what I wanted with some edits 
@BurritoGoblin , did you or anyone else reading ever get rid of the black background?
Any advice would be appreciated.
Thanks.
I think maybe this issue needs to be flagged as a bug in the engine.
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@Everynone Wow! That did it. All that was missing was multiplying in the RGBA pin from the Texture sample. Thank you so much.
Here’s my final material for making a procedural faded square mask for use with a retainer box.
Now if only I could figure this issue HERE, my pop-up menu would be complete.
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Maybe a daft question, but how do you get the RGBA pin to show up?
its new in 4.22
Technically, it should be just alpha I think. Updated it.
Thank you @MC1RScorpion and @Everynone
Just paying it forward…to everyone here, be sure to set your retainer material blending to Alpha Composite (Premultiplied Alpha), otherwise your colors will be all wrong. Good luck!
2 Likes
Thank you so much! This helped me figure out how to fade my scroll boxes and make them look nice!
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I’m glad it helped, curious, is this still applicable in UE5?