Created attachment 117986 [details] Screenshots and test program I'm getting strange behavior when I: 1. Do an XCopyArea from one part of a window to another... 2. Having an origin with one or both coordinates < 0... 3. With a clip mask. Sometimes I get the window background and no source area, sometimes I get a sliver of the source area, sometimes the area in the destination outside of the source has a checkerboard window background from the clip mask, and sometimes it's solid. And the only thing that changes is the origin for the source area rectangle. This can't be right...can it? This has happened on every X server I've tried so far. I'm attaching a test program so you can try it on yours.
FWIW, version numbers: name of display: :0.0 version number: 11.0 vendor string: The X.Org Foundation vendor release number: 11604000 X.Org version: 1.16.4 name of display: /tmp/launch-m3zGmD/org.macports:0 version number: 11.0 vendor string: The X.Org Foundation vendor release number: 11604000 X.Org version: 1.16.4 name of display: :0 version number: 11.0 vendor string: The Cygwin/X Project vendor release number: 11501000
Please attach the corresponding /var/log/Xorg.0.log file.
Created attachment 118204 [details] X log files Log files coming up. (These machines don't correspond with either the screenshots or the xdpyinfo dumps, but I was able to verify that they demonstrate the issue at hand just the same.)
Looks like it happens with non-Xorg DDXen as well.
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