UE4 Vertex Paint alpha not working?

melviso · Jun 2017

Having this same issue today. Is this a bug with ue4 16.1 version?
https://answers.unrealengine.com/questions/667739/vertex-color-alpha-channel-wont-work-for-me.html

Painting the alpha channel of vertex paint yields no result.

Nate Broach · Jun 2017

Did you have any luck figuring out the problem? I too am experiencing this. RGB works just fine, but alpha is totally unresponsive to vertex painting.

melviso · Jul 2017

Unfortunately no. I haven't been able to figure out the problem.

Klawd · Apr 2020

Just stumbled upon this. I know this thread is from 2017, but I thought I'd leave a reply anyway, for posterity you know...

Basically the default vector4, when painting alpha vertex color, has alpha value set to 1, both on white and on black. Image to understand better:

Image: https://us.v-cdn.net/5021068/uploads/editor/4p/yng0po6rxni0.png

Raindrawp · Jan 2022

https://polycount.com/discussion/comment/2722143#Comment_2722143

bloody legend, thank you for your service

Klawd · Jan 2022

Happy to help ;)

UE4 Vertex Paint alpha not working?

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