The format of the image has nothing to do with the rendering output which is always 16 or 32 bit (modern cards don't support anything else for 3D contexts).
Don't know if BM supports 8 Bit Alpha Images. Always thought 8Bit alpha is only available on 32Bit images (I mean true alpha, as gray scale won't represent any alpha in BM)
Don't know if BM supports 8 Bit Alpha Images. Always thought 8Bit alpha is only available on 32Bit images (I mean true alpha, as gray scale won't represent any alpha in BM)