Gary:
I, too, am trying to get my OpenGL ES 2.0 application to work nicely
within the Maemo environment.
I'm currently testing by killing off the window manager and other
related stuff - back to the old X11 wallpaper pattern, then running my
app. Works fine, as it goes.
I knew I'd have to come up with a solution one day, but since the
conversation on this list recently (below), I thought I'd take this
opportunity to probe a little deeper.
> I'm getting round this by designing my framework to allow both
> standalone unshared instances to be run (multiple XV overlays
> are allowed) and I have also put the core principles in place for
> dynamically loading shared application widgets into the playground.
Fact is, I don't understand this, and was hoping you'd elaborate... =0)
--------------
Does anyone else on the list know the Official Maemo Way to develop
OpenGL ES 2.0 applications?
My approach is that I just run the PowerVR SDK in the X86 mode. I
notice that the lib/.h files have now arrived for cross-compiling to ARM.
By the way, it's amazing how many levels and layers you can go through.
In case anyone else is put off trying it: I run in X86 SDK mode to the
PVR ES 2.0 emulation lib, which presumably uses the X86 SDK's GL
libraries and then goes to the Xephyr X11 app. This then runs into my
Ubuntu's X11, which is created by VMWare inside Windows XP inside a
laptop with Intel Graphics chips. (So I'm not expecting great
performance! But it works fine for testing. =0) I get "direct
rendering: Yes" from glxinfo inside my VMWare guest, so there's a slight
chance that there is some acceleration going on somewhere in the pipes...
Anyone else got experiences to report?
Perhaps we should start a wiki page somewhere to give the official
instructions for GL app devs, and to document successes and failures
like this?
Cheers!
Duncan Cragg
--
*Q:* /What's The Killer App for Mobile 2.0?/
*A:* See http://the-u-web.org
Subject:
Re: Clutter in Fremantle (Alpha SDK)
From:
gary liquid <liq...@gmail.com>
Date:
Tue, 17 Mar 2009 09:28:34 +0000
To:
Henrik Hedberg <henrik.hedb...@innologies.fi>
CC:
maemo-developers@maemo.org
Hendrik,
I assume that to use clutter in your application is to somehow get the
window manager to shutdown the opengl context and then open yours for
the duration before once again reopening the window manager.
A somewhat challenging prospect!
Whilst its possible to use x11 compositing to bring in a gtk or qt
window, I assume there is no extension to composite an opengl window itself.
And since its "difficult" to allow sharing of data between applications
this is not something that could be fixed elegently.
really makes you appreciate the underlying beauty of x11 :)
I'm getting round this by designing my framework to allow both
standalone unshared instances to be run (multiple XV overlays are
allowed) and I have also put the core principles in place for
dynamically loading shared application widgets into the playground.
It should be as simple as a change in the makefile to switch a properly
designed application between standalone or shared :)
gary
On Tue, Mar 17, 2009 at 7:37 AM, Henrik Hedberg
<henrik.hedb...@innologies.fi <mailto:henrik.hedb...@innologies.fi>> wrote:
Hi,
How is Clutter supposed to work in applications in Fremantle? Will
the Clutter-GTK library be included in the final SDK?
I have tried to run a Clutter application that works in desktop
environment. It compiles fine, but nothing happens when starting it in
the Alpha SDK. Also, even the simplest example application from
Programming with Clutter tutorial does not work [1].
Is this somehow related to this statement: "It is assumed that we
will have only one OpenGL drawing context, and thus a single process
running in the system will be using Clutter at a time. This process will
be the window manager and the implementor of all challenging graphical
UI effects on the screen." [2]
What is the trick to get a working Clutter stage in Fremantle
application?
BR,
Henrik
[1]
http://www.openismus.com/documents/clutter_tutorial/0.8/docs/tutorial/html/sec-stage.html#sec-stage-basics
[2] http://maemo.org/development/sdks/maemo5_alpha_overview/
--
Henrik Hedberg - http://www.henrikhedberg.net/
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