<table><tr><td style="">zzag created this revision.<br />zzag added a reviewer: KWin.<br />Herald added a project: KWin.<br />Herald added a subscriber: kwin.<br />zzag requested review of this revision.
</td><a style="text-decoration: none; padding: 4px 8px; margin: 0 8px 8px; float: right; color: #464C5C; font-weight: bold; border-radius: 3px; background-color: #F7F7F9; background-image: linear-gradient(to bottom,#fff,#f1f0f1); display: inline-block; border: 1px solid rgba(71,87,120,.2);" href="https://phabricator.kde.org/D25768">View Revision</a></tr></table><br /><div><strong>REVISION SUMMARY</strong><div><p>If the XRender scene has cross-faded a window, then, eventually, KWin/X11 will<br />
crash in the destructor of the XRenderPictureData class during tear down with<br />
the following message in the terminal</p>
<div class="remarkup-code-block" style="margin: 12px 0;" data-code-lang="text" data-sigil="remarkup-code-block"><pre class="remarkup-code" style="font: 11px/15px "Menlo", "Consolas", "Monaco", monospace; padding: 12px; margin: 0; background: rgba(71, 87, 120, 0.08);">ASSERT: "qApp" in file /home/vlad/Workspace/KDE/src/kde/workspace/kwin/libkwineffects/kwinxrenderutils.cpp, line 163</pre></div>
<p>The crash happens because X11StandalonePlatform attempts to clean up XRender<br />
resources, including XRenderUtils::s_blendPicture, after the application object<br />
has been destroyed.</p>
<p>In order to fix the crash, we have to destroy the platform object before the<br />
destructor of QCoreApplication is executed.</p></div></div><br /><div><strong>TEST PLAN</strong><div><ul class="remarkup-list">
<li class="remarkup-list-item">Enable maximize effect</li>
<li class="remarkup-list-item">Maximize a window</li>
<li class="remarkup-list-item">Replace the current instance of KWin/X11 with another one</li>
</ul>
<p>Without this patch, KWin/X11 crashes after the third step.</p></div></div><br /><div><strong>REPOSITORY</strong><div><div>R108 KWin</div></div></div><br /><div><strong>BRANCH</strong><div><div>adjust-xrender-scene</div></div></div><br /><div><strong>REVISION DETAIL</strong><div><a href="https://phabricator.kde.org/D25768">https://phabricator.kde.org/D25768</a></div></div><br /><div><strong>AFFECTED FILES</strong><div><div>main.cpp<br />
main.h</div></div></div><br /><div><strong>To: </strong>zzag, KWin<br /><strong>Cc: </strong>kwin, LeGast00n, The-Feren-OS-Dev, sbergeron, jraleigh, fbampaloukas, GB_2, mkulinski, ragreen, jackyalcine, iodelay, crozbo, bwowk, ZrenBot, ngraham, alexeymin, himcesjf, lesliezhai, ali-mohamed, hardening, romangg, jensreuterberg, abetts, sebas, apol, ahiemstra, mart<br /></div>