What about desktop? <div class="gmail_quote">2010/12/20 <<a href="mailto:wayland-devel-request@lists.freedesktop.org">wayland-devel-request@lists.freedesktop.org</a>> <blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;"> Send wayland-devel mailing list submissions to <a href="mailto:wayland-devel@lists.freedesktop.org">wayland-devel@lists.freedesktop.org</a> To subscribe or unsubscribe via the World Wide Web, visit <a href="http://lists.freedesktop.org/mailman/listinfo/wayland-devel" target="_blank">http://lists.freedesktop.org/mailman/listinfo/wayland-devel</a> or, via email, send a message with subject or body 'help' to <a href="mailto:wayland-devel-request@lists.freedesktop.org">wayland-devel-request@lists.freedesktop.org</a> You can reach the person managing the list at <a href="mailto:wayland-devel-owner@lists.freedesktop.org">wayland-devel-owner@lists.freedesktop.org</a> When replying, please edit your Subject line so it is more specific than "Re: Contents of wayland-devel digest..." Today's Topics: 1. Re: Wayland in N900 (Sami Ky?stil?) 2. Re: Wayland in N900 (Andreas Pokorny) ---------------------------------------------------------------------- Message: 1 Date: Mon, 20 Dec 2010 10:26:08 +0200 From: Sami Ky?stil? <<a href="mailto:sami.kyostila@nokia.com">sami.kyostila@nokia.com</a>> Subject: Re: Wayland in N900 To: ext Esa T?rmikoski <<a href="mailto:esa.tormikoski@nomovok.com">esa.tormikoski@nomovok.com</a>> Cc: H?gsberg <<a href="mailto:krh@bitplanet.net">krh@bitplanet.net</a>>, <a href="mailto:Esa@freedesktop.org">Esa@freedesktop.org</a>, ext, <a href="mailto:wayland-devel@lists.freedesktop.org">wayland-devel@lists.freedesktop.org</a> Message-ID: <<a href="mailto:201012201026.09123.sami.kyostila@nokia.com">201012201026.09123.sami.kyostila@nokia.com</a>> Content-Type: Text/Plain; charset="utf-8" On Friday 17 December 2010 20:28:34 ext Esa T?rmikoski wrote: > On 12/16/2010 11:06 AM, Sami Ky?stil? wrote: > > Hi, > > > > On Wednesday 15 December 2010 20:43:13 ext Kristian H?gsberg wrote: > >> On Wed, Dec 15, 2010 at 1:13 PM, Esa T?rmikoski > >> > >> <<a href="mailto:esa.tormikoski@nomovok.com">esa.tormikoski@nomovok.com</a>> wrote: > >>> Looks like I'm trying to get Wayland running in Nokia N900. Is there > >>> any experiences about that already? All help and estimations about > >>> work amount is welcome. > >> > >> Hi, > >> > >> I don't know that anybody has tried that. The big unknown is how to > >> integrate with the graphics drivers on the device - the GL stack and > >> modesetting. And the GL stack has to provide a way for processes to > >> share 2d pixel buffers (for example an EGLImage). I've never worked > >> with the n900 platform, so I don't know, but a good first step towards > >> Wayland would be to try to run EGL+GLES2 on the framebuffer or such. > > > > You can run the graphics stack on N900 on the framebuffer without X, but > > the problem is there's no way to share EGLImages across processes in > > that configuration. That is, the graphics driver does not support > > EGL_MESA_drm_image or any equivalent. > > > > With X, sharing EGLImages between processes is possible by backing them > > with pixmaps. So in theory you could run Wayland on N900 by using X for > > resource management -- but that would mostly defeat the purpose. > > > >> Kristian > > > > - Sami > > Doomed right in the start :( Need to find some other topic for thesis > work then if this is impossible.. Yeah, all the bits that would need to be modified for this are in the closed source graphics driver. Of course, if you're only doing this for research and aren't looking for an optimal system, you could implement buffer sharing with an explicit userspace copy (i.e., glReadPixels). The performance will be abysmal, though. > -- Esa - Sami ------------------------------ Message: 2 Date: Mon, 20 Dec 2010 10:57:52 +0100 From: Andreas Pokorny <<a href="mailto:andreas.pokorny@gmail.com">andreas.pokorny@gmail.com</a>> Subject: Re: Wayland in N900 To: <a href="mailto:Darxus@chaosreigns.com">Darxus@chaosreigns.com</a> Cc: Esa T?rmikoski <<a href="mailto:esa.tormikoski@nomovok.com">esa.tormikoski@nomovok.com</a>>, <a href="mailto:wayland-devel@lists.freedesktop.org">wayland-devel@lists.freedesktop.org</a> Message-ID: <<a href="mailto:AANLkTimSn42b0RjtyHcedDGMOAyMPCDHiuE5xhzh4rh_@mail.gmail.com">AANLkTimSn42b0RjtyHcedDGMOAyMPCDHiuE5xhzh4rh_@mail.gmail.com</a>> Content-Type: text/plain; charset=UTF-8 Hi Esa, 2010/12/17 <<a href="mailto:Darxus@chaosreigns.com">Darxus@chaosreigns.com</a>>: > On 12/17, Esa T?rmikoski wrote: > [...] >> Doomed right in the start :( Need to find some other topic for >> thesis work then if this is impossible.. > > Ask Nokia to implement EGLImage sharing across processes? > > I assume the driver is closed? The kernel part is open and provides access to buffer management. The Imagination driver has a sort of texture streaming extension. That allows you to attach special shared memory buffers, that were allocated by for the GPU. TI added a so called buffer class as a loadable module [1], to manage the buffer allocation. All in all maybe not enough to implement proper sharing of buffers, but maybe it can be abused somehow.... 1: <a href="http://processors.wiki.ti.com/index.php/OpenGLES_Texture_Streaming_-_bc-cat_User_Guide" target="_blank">http://processors.wiki.ti.com/index.php/OpenGLES_Texture_Streaming_-_bc-cat_User_Guide</a> regards Andreas ------------------------------ _______________________________________________ wayland-devel mailing list <a href="mailto:wayland-devel@lists.freedesktop.org">wayland-devel@lists.freedesktop.org</a> <a href="http://lists.freedesktop.org/mailman/listinfo/wayland-devel" target="_blank">http://lists.freedesktop.org/mailman/listinfo/wayland-devel</a> End of wayland-devel Digest, Vol 3, Issue 18 ******************************************** </blockquote></div>