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List: kde-core-devel
Subject: Re: Review Request: Add support for building libplasma with GLES2
From: Martin_Gräßlin <kde () martin-graesslin ! com>
Date: 2011-02-23 17:29:38
Message-ID: 20110223172938.12259.48565 () vidsolbach ! de
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The GLApplet seems to be unmaintained and is nowhere used in KDE (see \
http://lxr.kde.org/ident?i=GLApplet ). There was once one demo applet using it, but \
it has vanished.
GLApplet uses OpenGL only for glClear before passing the QPainter to the Plasmoid. I \
think we could just remove the background clearing and require it from the applet and \
drop the link to OpenGL completely.
Another thing is that given that it is just not used adding the complete GLES \
detection and building to Plasma does not make sense. It's probably better just to \
add a cmake option to disable building of the plasma applet (maybe using the mobile \
profile for that?).
The CMake stuff to find GLES is unfortunately not in a state to be included in \
kdelibs. I contacted build system some time ago and they gave me a nice list of \
things which need to be improved and it's still on my TODO stack :-(
It would be nice to have some input from Plasma devs here. Could you please add the \
Plasma group to the review?
- Martin
On Feb. 21, 2011, 4:06 p.m., Jammy Zhou wrote:
>
> -----------------------------------------------------------
> This is an automatically generated e-mail. To reply, visit:
> http://git.reviewboard.kde.org/r/100705/
> -----------------------------------------------------------
>
> (Updated Feb. 21, 2011, 4:06 p.m.)
>
>
> Review request for kdelibs.
>
>
> Summary
> -------
>
> After build kwin with GLES2 code path, the kwin binary still has dependency on \
> libGL.so, which is introduced by libplasma.so. Then we also need to add GLES2 \
> support to libplasma, so that kwin/plasma only has dependency on libGLESv2.so in \
> this case.
> The new option "BUILD_PLASMA_WITH_OPENGLES" added in attached patch is disabled by \
> default, and distributions can turn it on when do packaging for OpenGL ES2.0 \
> support.
>
> Diffs
> -----
>
> CMakeLists.txt 2dcc5ec
> cmake/modules/FindOpenGLES.cmake PRE-CREATION
> includes/CMakeLists.txt 9954c37
> plasma/CMakeLists.txt 8e6b0d7
>
> Diff: http://git.reviewboard.kde.org/r/100705/diff
>
>
> Testing
> -------
>
> After turn the "BUILD_PLASMA_WITH_OPENGLES" option on, kwin-gles has no dependency \
> on libGL.so now. And by default, libplasma still depends on libGL.so when run ldd.
>
> Thanks,
>
> Jammy
>
>
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This is an automatically generated e-mail. To reply, visit:
<a href="http://git.reviewboard.kde.org/r/100705/">http://git.reviewboard.kde.org/r/100705/</a>
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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;">The GLApplet seems to be \
unmaintained and is nowhere used in KDE (see http://lxr.kde.org/ident?i=GLApplet ). \
There was once one demo applet using it, but it has vanished.
GLApplet uses OpenGL only for glClear before passing the QPainter to the Plasmoid. I \
think we could just remove the background clearing and require it from the applet and \
drop the link to OpenGL completely.
Another thing is that given that it is just not used adding the complete GLES \
detection and building to Plasma does not make sense. It's probably better just \
to add a cmake option to disable building of the plasma applet (maybe using the \
mobile profile for that?).
The CMake stuff to find GLES is unfortunately not in a state to be included in \
kdelibs. I contacted build system some time ago and they gave me a nice list of \
things which need to be improved and it's still on my TODO stack :-(
It would be nice to have some input from Plasma devs here. Could you please add the \
Plasma group to the review?</pre> <br />
<p>- Martin</p>
<br />
<p>On February 21st, 2011, 4:06 p.m., Jammy Zhou wrote:</p>
<table bgcolor="#fefadf" width="100%" cellspacing="0" cellpadding="8" \
style="background-image: \
url('http://git.reviewboard.kde.orgrb/images/review_request_box_top_bg.png'); \
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<div>Review request for kdelibs.</div>
<div>By Jammy Zhou.</div>
<p style="color: grey;"><i>Updated Feb. 21, 2011, 4:06 p.m.</i></p>
<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;">After build kwin with GLES2 code path, the kwin binary still has \
dependency on libGL.so, which is introduced by libplasma.so. Then we also need to add \
GLES2 support to libplasma, so that kwin/plasma only has dependency on libGLESv2.so \
in this case.
The new option "BUILD_PLASMA_WITH_OPENGLES" added in attached patch is \
disabled by default, and distributions can turn it on when do packaging for OpenGL \
ES2.0 support.</pre> </td>
</tr>
</table>
<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;">After turn the "BUILD_PLASMA_WITH_OPENGLES" option on, \
kwin-gles has no dependency on libGL.so now. And by default, libplasma still depends \
on libGL.so when run ldd.</pre> </td>
</tr>
</table>
<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Diffs</b> </h1>
<ul style="margin-left: 3em; padding-left: 0;">
<li>CMakeLists.txt <span style="color: grey">(2dcc5ec)</span></li>
<li>cmake/modules/FindOpenGLES.cmake <span style="color: \
grey">(PRE-CREATION)</span></li>
<li>includes/CMakeLists.txt <span style="color: grey">(9954c37)</span></li>
<li>plasma/CMakeLists.txt <span style="color: grey">(8e6b0d7)</span></li>
</ul>
<p><a href="http://git.reviewboard.kde.org/r/100705/diff/" style="margin-left: \
3em;">View Diff</a></p>
</td>
</tr>
</table>
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