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<b><a class="bz_bug_link
bz_status_UNCONFIRMED "
title="UNCONFIRMED - [GTK] Move towards Xvfb-less testing"
href="https://bugs.webkit.org/show_bug.cgi?id=71849#c8">Comment # 8</a>
on <a class="bz_bug_link
bz_status_UNCONFIRMED "
title="UNCONFIRMED - [GTK] Move towards Xvfb-less testing"
href="https://bugs.webkit.org/show_bug.cgi?id=71849">bug 71849</a>
from <span class="vcard"><a class="email" href="mailto:clopez@igalia.com" title="Carlos Alberto Lopez Perez <clopez@igalia.com>"> <span class="fn">Carlos Alberto Lopez Perez</span></a>
</span></b>
<pre>I have opened the following bugs to track the WebGL, 3D and compositing related failures:
<a class="bz_bug_link
bz_status_NEW "
title="NEW - [GTK] Lots of css3/blending tests fail. Enable support for CSS_COMPOSITING"
href="show_bug.cgi?id=169916">bug 169916</a> (css3/blending failures)
<a class="bz_bug_link
bz_status_NEW "
title="NEW - [GTK] Many Compositing tests fail."
href="show_bug.cgi?id=169918">bug 169918</a> (compositing failures)
<a class="bz_bug_link
bz_status_NEW "
title="NEW - [GTK] Many WebGL tests fail, are slow or timeout."
href="show_bug.cgi?id=169917">bug 169917</a> (webgl failures)
<a class="bz_bug_link
bz_status_NEW "
title="NEW - [GTK] WebGL2 support"
href="show_bug.cgi?id=166536">bug 166536</a> (webgl2 not enabled)
I also rebaselined a bunch of tests that looked to me like they were passing fine
(either the produced image was very similar to the Mac ports or the text diff was only a few pixels of difference)
I have tested to run all this tests inside Xvfb vs native X11/Xorg and the differences
where minimal and all related to WebGL. I summarized those differences here: <a class="bz_bug_link
bz_status_NEW "
title="NEW - [GTK] Many WebGL tests fail, are slow or timeout."
href="show_bug.cgi?id=169917#c2">https://bugs.webkit.org/show_bug.cgi?id=169917#c2</a>
I expect the differences when running on wayland to be bigger.
I tried to run the tests with the virtualized weston (by passing --display-server=weston to run-webkit-tests script)
and indeed I got a big diff:
Regressions: Unexpected text-only failures (156)
Regressions: Unexpected image-only failures (4)
Regressions: Unexpected timeouts (8)
My bet is that this is caused because the nested compositor is unable to run in that environment. I will watch our Wayland bot (that runs on real wayland with an Intel GPU) to check what differences are compared to X.</pre>
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