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2 Layers - 1 Picture - 1 GreyScale - Merge So the GreyScale Changes the Alpha On The Picture

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Is this possible?


I have 2 layers. One is a Picture. One is a Greyscale.


The Greyscale represents what alpha value I want on the Picture Layer. Ie 255/255/255 on the greyscale represents a 255 alpha on the picture, where the picture retains the same RGB value. A 0/0/0 on the Greyscale represents a totally see through pixel on the picture. The other varying levels of grey indicate the other possible alpha values.


Is there there a way I can merge the two layers so the greyscale alters the alpha on the picture layer?


Edited by JAA
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That's kinda old. If you're using the latest Paint.NET (v5+), reinstall my plugin pack and you'll have:


Effects > Object > Apply Mask




And, to create a mask from a normal layer, use


Effects > Object > Switch Alpha to Gray...



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