You could set Entity Blend to Add (on the mapped object) to have Black becoming transparent (on black background) but that's not the perfect solution.
Backbuffer has no alpha channel as far as I know, so you will have to perform and additional step on the texture before displaying it, I am afraid you will have to dive into more low level code to get this working properly.
Backbuffer has no alpha channel as far as I know, so you will have to perform and additional step on the texture before displaying it, I am afraid you will have to dive into more low level code to get this working properly.