On Oct 7, 2011, at 11:45 AM, Elliot Poger wrote: > I was having problems with lots of image mismatches running WebKit layout > tests on a headless MacPro (10.6.8). (The image diffs were very minor > adjustments in scroll bar shading.) > > Eventually, out of frustration, I tried running the same test on that > headless MacPro as well as my desktop MacPro (also 10.6.8). The test > succeeded on my desktop MacPro but not the headless MacPro. > > One difference I have noticed is that the Display Profile (under System > Preferences > Displays > Color) is set to "sRGB IEC61966-2.1" (my desktop was > set to "Generic RGB Profile"). I tried setting it to "Generic RGB Profile" > on the headless machine, but when I closed and reopened System Preferences it > had reverted to "sRGB IEC61966-2.1". > > I tried setting the Display Profile on my desktop to "sRGB IEC61966-2.1", and > the color scheme was noticeably brighter... but when I ran layout tests > afterwards, I saw that layout tests automatically set the profile back to > "Generic RGB Profile" temporarily for the test. When I run layout tests on > the headless MacPro, it seems that it fails to change the color profile (and > I don't see any error in the output of layout tests). > > I tried it on a headless Mac Mini (10.6.8) and there layout tests was able to > change to Generic RGB Profile (and thus the tests passed). > > For now, my fix is going to be: don't run layout tests on headless MacPros; > use headless MacMinis instead. Is this a Known Issue? Any suggestions?
I'm aware that there are color profile issues when running pixel tests, but I was not aware of differences between hardware. We may be able to fix DumpRenderTree/WebKitTestRunner to change the color profile just for the test window, and not globally. I haven't tried that yet. Finally, I've noticed some changes in color profile behavior on Lion, so if you try running tests there, you may see a new set of problems. Simon _______________________________________________ webkit-dev mailing list webkit-dev@lists.webkit.org http://lists.webkit.org/mailman/listinfo.cgi/webkit-dev
