Draw Material To Render Target impossible to control alpha - always fully transparent

[Rawalanche]

@unit23

So I am not sure about texture formats, but perhaps all you need to do is invert the alpha channel, which requires a OneMinus node from the texture alpha to your opacity material pin, as I outline here in some context on rendering the player to the UI https://www.youtube.com/watch?v=XvhtSwXp8D8

Did not work. I tried all those shenanigans, inverting it, all the different shading and blend modes with alpha being 1,0 or -1. Only thing that worked was additive mode, but that added the image contribution so each frame was subsequently brighter.