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List: kwin
Subject: Re: Review Request: Swap vsync order, trade in 1frame lag, try harder to detect nvidia framerate (re
From: Thomas_Lübking <thomas.luebking () web ! de>
Date: 2012-03-12 0:06:37
Message-ID: 20120312000637.29919.67908 () vidsolbach ! de
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This is an automatically generated e-mail. To reply, visit:
http://git.reviewboard.kde.org/r/103058/
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(Updated March 12, 2012, 12:06 a.m.)
Review request for kwin and Martin Gr=C3=A4=C3=9Flin.
Changes
-------
Forward to current master
Description
-------
This performs a paint & glFlush immediately after the buffer swapping and d=
efers the next swapping to the next anticipated frame (or idling)
The behavior is still not as deterministic as we hoped to be since we canno=
t measure the time for the actual vsync :\
I set a fuzzyness of 6ms what leads to a majority of 2-3ms times in waitsyn=
c but single wait times up to 8 or 9ms occur (what ultimately can be part o=
f the syncing itself)
There's some debug code to print lagging.
TODO:
- attempt egl support
- probably lie to the effects about the time
Diffs (updated)
-----
kwin/CMakeLists.txt 0b89d98 =
kwin/composite.cpp 342f0c7 =
kwin/libkwineffects/kwinglutils_funcs.h 97a7a6c =
kwin/libkwineffects/kwinglutils_funcs.cpp 6d79507 =
kwin/options.h c0ab6b2 =
kwin/options.cpp f17a421 =
kwin/scene.h c7e462f =
kwin/scene.cpp 2af2262 =
kwin/scene_basic.h PRE-CREATION =
kwin/scene_basic.cpp PRE-CREATION =
kwin/scene_opengl.h 98d4dd4 =
kwin/scene_opengl.cpp a0e0e0f =
kwin/scene_opengl_egl.cpp d0ce360 =
kwin/scene_opengl_glx.cpp efde30a =
kwin/scene_xrender.h b544b0b =
kwin/scene_xrender.cpp c9caa87 =
kwin/workspace.h f8316b3 =
kwin/workspace.cpp 66fb50c =
Diff: http://git.reviewboard.kde.org/r/103058/diff/
Testing
-------
I've used a CRT for testing which can sync every 11ms ie. 85Hz and lowered =
the maxFPS down to 10fps with pretty constant results for the time lost wai=
ting for the sync.
Thanks,
Thomas L=C3=BCbking
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This is an automatically generated e-mail. To reply, visit:
<a href="http://git.reviewboard.kde.org/r/103058/">http://git.reviewboard.kde.org/r/103058/</a>
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<div>Review request for kwin and Martin Gräßlin.</div>
<div>By Thomas Lübking.</div>
<p style="color: grey;"><i>Updated March 12, 2012, 12:06 a.m.</i></p>
<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Changes</h1>
<table width="100%" bgcolor="#ffffff" cellspacing="0" cellpadding="10" style="border: \
1px solid #b8b5a0"> <tr>
<td>
<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;">Forward to current master</pre> </td>
</tr>
</table>
<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Description </h1>
<table width="100%" bgcolor="#ffffff" cellspacing="0" cellpadding="10" \
style="border: 1px solid #b8b5a0"> <tr>
<td>
<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;">This performs a paint & glFlush immediately after the buffer \
swapping and defers the next swapping to the next anticipated frame (or idling) The \
behavior is still not as deterministic as we hoped to be since we cannot measure the \
time for the actual vsync :\ I set a fuzzyness of 6ms what leads to a majority of \
2-3ms times in waitsync but single wait times up to 8 or 9ms occur (what ultimately \
can be part of the syncing itself)
There's some debug code to print lagging.
TODO:
- attempt egl support
- probably lie to the effects about the time</pre>
</td>
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<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Testing </h1>
<table width="100%" bgcolor="#ffffff" cellspacing="0" cellpadding="10" style="border: \
1px solid #b8b5a0"> <tr>
<td>
<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;">I've used a CRT for testing which can sync every 11ms ie. 85Hz and \
lowered the maxFPS down to 10fps with pretty constant results for the time lost \
waiting for the sync.</pre> </td>
</tr>
</table>
<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Diffs</b> \
(updated)</h1> <ul style="margin-left: 3em; padding-left: 0;">
<li>kwin/CMakeLists.txt <span style="color: grey">(0b89d98)</span></li>
<li>kwin/composite.cpp <span style="color: grey">(342f0c7)</span></li>
<li>kwin/libkwineffects/kwinglutils_funcs.h <span style="color: \
grey">(97a7a6c)</span></li>
<li>kwin/libkwineffects/kwinglutils_funcs.cpp <span style="color: \
grey">(6d79507)</span></li>
<li>kwin/options.h <span style="color: grey">(c0ab6b2)</span></li>
<li>kwin/options.cpp <span style="color: grey">(f17a421)</span></li>
<li>kwin/scene.h <span style="color: grey">(c7e462f)</span></li>
<li>kwin/scene.cpp <span style="color: grey">(2af2262)</span></li>
<li>kwin/scene_basic.h <span style="color: grey">(PRE-CREATION)</span></li>
<li>kwin/scene_basic.cpp <span style="color: grey">(PRE-CREATION)</span></li>
<li>kwin/scene_opengl.h <span style="color: grey">(98d4dd4)</span></li>
<li>kwin/scene_opengl.cpp <span style="color: grey">(a0e0e0f)</span></li>
<li>kwin/scene_opengl_egl.cpp <span style="color: grey">(d0ce360)</span></li>
<li>kwin/scene_opengl_glx.cpp <span style="color: grey">(efde30a)</span></li>
<li>kwin/scene_xrender.h <span style="color: grey">(b544b0b)</span></li>
<li>kwin/scene_xrender.cpp <span style="color: grey">(c9caa87)</span></li>
<li>kwin/workspace.h <span style="color: grey">(f8316b3)</span></li>
<li>kwin/workspace.cpp <span style="color: grey">(66fb50c)</span></li>
</ul>
<p><a href="http://git.reviewboard.kde.org/r/103058/diff/" style="margin-left: \
3em;">View Diff</a></p>
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