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This is an automatically generated e-mail. To reply, visit:
<a href="https://git.reviewboard.kde.org/r/128763/">https://git.reviewboard.kde.org/r/128763/</a>
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<p style="margin-top: 0;">On August 26th, 2016, 7:49 a.m. UTC, <b>Martin Gräßlin</b> wrote:</p>
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<a href="https://git.reviewboard.kde.org/r/128763/diff/1/?file=475422#file475422line682" style="color: black; font-weight: bold; text-decoration: underline;">src/declarativeimports/core/windowthumbnail.cpp</a>
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(Diff revision 1)
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<td colspan="4"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">void WindowThumbnail::discardPixmap()</pre></td>
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<th bgcolor="#f0f0f0" style="border-right: 1px solid #C0C0C0;" align="right"><font size="2">654</font></th>
<td bgcolor="#ffffff" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="k">if</span> <span class="p">(</span><span class="n">m_image</span> <span class="o">!=</span> <span class="n">EGL_NO_IMAGE_KHR</span><span class="p">)</span> <span class="p">{</span></pre></td>
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<td bgcolor="#ffffff" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="k">if</span> <span class="p">(</span><span class="n">m_image</span> <span class="o">!=</span> <span class="n">EGL_NO_IMAGE_KHR</span><span class="p">)</span> <span class="p">{</span></pre></td>
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<td bgcolor="#ffffff" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="p">((</span><span class="n">eglDestroyImageKHR_func</span><span class="p">)(</span><span class="n">m_eglDestroyImageKHR</span><span class="p">))(</span><span class="n">eglGetCurrentDisplay</span><span class="p">(),</span> <span class="n">m_image</span><span class="p">);</span></pre></td>
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<td bgcolor="#ffffff" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="p">((</span><span class="n">eglDestroyImageKHR_func</span><span class="p">)(</span><span class="n">m_eglDestroyImageKHR</span><span class="p">))(</span><span class="n">eglGetCurrentDisplay</span><span class="p">(),</span> <span class="n">m_image</span><span class="p">);</span></pre></td>
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<td bgcolor="#ffffff" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="n">m_image</span> <span class="o">=</span> <span class="n">EGL_NO_IMAGE_KHR</span><span class="p">;</span></pre></td>
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<td bgcolor="#ffffff" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="n">m_image</span> <span class="o">=</span> <span class="n">EGL_NO_IMAGE_KHR</span><span class="p">;</span></pre></td>
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<td bgcolor="#ffffff" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="n">glDeleteTextures</span><span class="p">(</span><span class="mi">1</span><span class="p">,</span> <span class="o">&</span><span class="n">m_texture</span><span class="p">);</span></pre></td>
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<td bgcolor="#ffffff" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="n">glDeleteTextures</span><span class="p">(</span><span class="mi">1</span><span class="p">,</span> <span class="o">&</span><span class="n">m_texture</span><span class="p">);</span></pre></td>
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<td bgcolor="#ffffff" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="p">}</span></pre></td>
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<td bgcolor="#ffffff" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="p">}</span></pre></td>
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<pre style="white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;"><p style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: inherit;">we probably need to do the same for EGL, don't we?</p></pre>
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<pre style="margin-left: 1em; white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;"><p style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: inherit;">GLX and ELG are the same.
I was dropping the xcb_free_pixmap from here, as that is also in stopRedirecting.</p></pre>
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<p>- David</p>
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<p>On August 26th, 2016, 1:04 a.m. UTC, David Edmundson wrote:</p>
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<div>Review request for KDE Frameworks and Plasma.</div>
<div>By David Edmundson.</div>
<p style="color: grey;"><i>Updated Aug. 26, 2016, 1:04 a.m.</i></p>
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<b style="color: #575012; font-size: 10pt;">Repository: </b>
plasma-framework
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<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Description </h1>
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<pre style="margin: 0; padding: 0; white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;"><p style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: inherit;">WindowThumbnail did some open GL operations, discarding old textures, in the GUI thread. Whislt it's not going to cause a threading issue (as updatePaintNode always ran when the main thread was blocked) we're not meant to mix threads with openGL contexts.</p>
<p style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: inherit;">It also seems to have a GL leak on nvidia, which was previously masked
by the double delete fixed in https://git.reviewboard.kde.org/r/126131/diff/2/
It seems only one worked, and in the applied version we went with the wrong one.</p>
<p style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: inherit;">This patch makes use of QQuickItem::releaseResources to delete the GL
textures on window change and destructor; it's then removed from
stopRedirecting so that start/stop redirecting handles xcb on the GUI thread and updatePaintNode/discardPixmap is the GL stuff on the render thread. </p>
<p style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: inherit;">See http://doc.qt.io/qt-5/qquickitem.html#graphics-resource-handling</p>
<p style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: inherit;">REVIEW:</p></pre>
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<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Testing </h1>
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<pre style="margin: 0; padding: 0; white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;"><p style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: inherit;">Using nvidia with proprietory drivers (which puts me QSG_RENDER_LOOP=threaded) mouse over the panel a lot. VRAM didn't increase. Previews still appear.
"Used Dedicated Memory:" in nvidia-settings remained roughly static, rather than constantly increasing.</p></pre>
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<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Diffs</b> </h1>
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<li>src/declarativeimports/core/windowthumbnail.h <span style="color: grey">(7276f95de16e71006618f3282d8eaf419a199d1d)</span></li>
<li>src/declarativeimports/core/windowthumbnail.cpp <span style="color: grey">(d106994315099ab6e6f948c31a606d5309ae03e2)</span></li>
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<p><a href="https://git.reviewboard.kde.org/r/128763/diff/" style="margin-left: 3em;">View Diff</a></p>
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