Does anyone have a (good) reference for the mskHasAlpha masking value for ILBM? I'm struggling to find out what it means with regard to how the bitmap is stored and information seems to be somewhat scarce.
I understand it means that "the image has an alpha channel", but I'm looking for how it affects the encoding of the scanlines when storing as a file. Is it like mskHasMask in that it implies one or more interleaved scan lines (but I would assume a full 8 lines would make that RGBA and 32-bit not 24)? Does it denote the transparent "colour" somehow and, if so, why does that differ from mskHasTransparentColor? I'm hoping there's some kind of spec somewhere and it's just eluding me..
Thanks in advance.