Hi, I'm trying to paste an RGBA image onto another RGBA image but the blending is not working as I would expect it to.
The code is something like this, where src and dst are both RGBA: src = Image.open( 'img.png' ) dst = Image.open( 'img2.png' ) dst.paste( src, None, src ) What I expect to happen is that the alpha value of 'dst' stays the same. However, what actually happens is that the new alpha value is being computed by blending 'src' alpha and 'dst' alpha together. It could be argued that this is the desired behaviour, but I don't think that it isn't consistent with other cases of using paste. In fact I found a workaround that behaves how I would expect it to. The trick is to convert src to a RGB image first, then just use the original src as the mask. src = Image.open( 'img.png' ) dst = Image.open( 'img2.png' ) srcRGB = src.convert( 'RGB' ) dst.paste( srcRGB, None, src ) Actually I did a search and found that this same problem has come up before in this thread: http://www.mail-archive.com/image-sig@python.org/msg00773.html Cheers, James Sayer _______________________________________________ Image-SIG maillist - Image-SIG@python.org http://mail.python.org/mailman/listinfo/image-sig
