On Tue, 11 Jan 2022 at 08:55, Stefan BrĂ¼ns stefan.bruens@rwth-aachen.de wrote:
I have rerun the test with WINETEST_DEBUG=2, see https://testbot.winehq.org/JobDetails.pl?Key=105001
This seems to be an issue on the Debian 11 CI system. It is a small rendering glitch, the (first)test is supposed to paint a plain rectangle, but on Debian both horizontal edges are thinned by one pixel (see attached PNGs or ASCII art below). All 4 joins are rendered correctly.
ASCII art - Win/TW || Debian:
*====* *____* | | | | | | | | *====* *____*
On my openSUSE Tumbleweed, the output matches the reference, so it may be a graphics driver issue.
IIRC that particular machine is using llvmpipe, which unfortunately cares a bit more about speed than correctness. Sadly, I don't think a solution is likely to happen; sorry you ran into this.