[cairo] Possible A8 Compositing Bug

Jeremy Moles jeremy at emperorlinux.com
Fri Sep 17 10:38:16 PDT 2010

I have attached a very small C application (~15 lines of code)
demonstrating what I believe to be a bug in CAIRO_FORMAT_A8 when using
the CLEAR operator. It only appears to be clearing those areas in DEST
where SRC's alpha isn't full intensity (if that terminology makes any
sense :)).

The bug exists in 1.10 at least, but NOT in the versions of cairo
provided by Ubuntu 10.04 and Fedora 13 by default.

-------------- next part --------------
A non-text attachment was scrubbed...
Name: bug.c
Type: text/x-csrc
Size: 519 bytes
Desc: not available
URL: <http://lists.cairographics.org/archives/cairo/attachments/20100917/032e1eab/attachment.c>

More information about the cairo mailing list