OK, this is basic but I did tweak the Bloom in A:M Composite.
How can I get the alpha channel involved in a composite? As it is the only thing I can get from A:M Composite is a black background. I had to render a TGA with the alpha buffer turned on and bring both images into PhotoShop to get the white background.
I know I'm missing something, I just don't know what it is...
My camera has a white background, it just renders black.