I'm trying to export a semi-transparent png. There is an addition layer with giving a bloom/glow(not really sure what to else call it) which shows up fine when there is a black background, but disappears when I hide the layer and/or export it.
I had a very similar problem in blender when making the model while exporting it. The only way to properly get around it was to export two layers, one with traansparency and one with a black background, and then in gimp reduce the lightness of the layer with transparency to zero, and set the mode for the layer with the background to addition.
I want to be able to export this as semi-transparent so I can composite it over a video without the hassle of having to export two files and set them up in the video editing.