Re: Freerunner and Wayland

2011-07-13 Thread Thomas White
On Thu, 7 Jul 2011 18:05:02 +0100
Neil Jerram neiljer...@gmail.com wrote:

 Just wondering... is it at all feasible, in the nearish future, for
 Wayland to run on the Freerunner?  I mean directly on KMS, not as an X
 client.
 
 Would there be any advantage to that, compared to the current X usage?
  I'm imagining it might perform better, but I don't really know.

It's feasible, but not easy.  Wayland is essentially a thin wrapper
around the low-level DRM and KMS stuff allowing clients to submit
hardware command sequences directly rather than going via X's
acceleration pathways.  A lot of the performance difficulties with the
X pathway (not just on our hardware) seem to be because the server
can't possibly know enough about what the client wants to accelerate it
effectively. Fast and smooth graphics on the Freerunner should be
perfectly possible, but would rely on exactly this kind of
clairvoyance from the X server.

So, getting Wayland to run on its own shouldn't be too difficult
(famous last words..), but writing programs which can actually make use
of it is significantly more difficult.

Tom

-- 
Thomas White t...@bitwiz.org.uk

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[QtMoko] Suggestion for an external mailing list

2011-07-13 Thread Giacomo 'giotti' Mariani

Hello everyone,
this is not the first time http://lists.openmoko.org/ has some
problem (I don't know why it happens). In this moment it is
unreachable... will this email ever arrive to you?
Anyway, since QtMoko is hosted on sourceforge and the site offers a
mailing list service[1] I thought we could use it.

What do you think?

Regards
   Giacomo

[1] http://sourceforge.net/apps/trac/sourceforge/wiki/Mailing%20lists


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Re: Freerunner and Wayland

2011-07-13 Thread Neil Jerram
Hi Tom,

Thanks for your answer...

On 13 July 2011 10:01, Thomas White t...@bitwiz.org.uk wrote:

 acceleration pathways.  A lot of the performance difficulties with the
 X pathway (not just on our hardware) seem to be because the server
 can't possibly know enough about what the client wants to accelerate it
 effectively. Fast and smooth graphics on the Freerunner should be
 perfectly possible, but would rely on exactly this kind of
 clairvoyance from the X server.

 So, getting Wayland to run on its own shouldn't be too difficult
 (famous last words..), but writing programs which can actually make use
 of it is significantly more difficult.

I have read that some toolkits, like Gtk+ and Cairo, have (or are in
the process of having) support for Wayland as their backend directly
(i.e. not via X).  Also that it's possible to write clients using a GL
API directly, and that the library providing that API would use
Wayland directly.

I guessed from that that the toolkit or GL implementation might be in
a better position to have exactly that kind of clairvoyance - i.e. to
know what kind of acceleration would be useful, and to ask the
hardware driver for that.

Hence, I thought, there might be some performance benefit in the
acceleration-potential being in the toolkit or library, instead of in
X; and also perhaps in just cutting out one of the layers.  Also, I
presume, I could write a new client today using e.g. the Cairo API,
and that should Just Work.

Is any of that correct?

(Having said that, I don't recall reading yet of any Wayland support
in the E toolkit, and certainly that would be a specific problem for
SHR usage.  But maybe Wayland is still worth experimenting with in a
non-SHR setup.)

Thanks again,
   Neil

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Re: Freerunner and Wayland

2011-07-13 Thread Al Johnson
On Wednesday 13 July 2011, Neil Jerram wrote:
 Hi Tom,
 
 Thanks for your answer...
 
 On 13 July 2011 10:01, Thomas White t...@bitwiz.org.uk wrote:
  acceleration pathways.  A lot of the performance difficulties with the
  X pathway (not just on our hardware) seem to be because the server
  can't possibly know enough about what the client wants to accelerate it
  effectively. Fast and smooth graphics on the Freerunner should be
  perfectly possible, but would rely on exactly this kind of
  clairvoyance from the X server.
  
  So, getting Wayland to run on its own shouldn't be too difficult
  (famous last words..), but writing programs which can actually make use
  of it is significantly more difficult.
 
 I have read that some toolkits, like Gtk+ and Cairo, have (or are in
 the process of having) support for Wayland as their backend directly
 (i.e. not via X).  Also that it's possible to write clients using a GL
 API directly, and that the library providing that API would use
 Wayland directly.

Add Qt to that list. Meego may be using it, and kwin is being ported as the 
first stage in letting kde run on Wayland. Both of these may be a little heavy 
for the Glamo's GL capabilitites, but it shows writing applications for 
Wayland is getting much easier.

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replacement screens for USA owners of OM Freerunner

2011-07-13 Thread William Vidrine
Does anybody know of a source for replacement screens for OM Freerunner owners 
in the United States?
My screen got cracked, and shipping it to Pulster would be slow and expensive 
(plus my bank says the wire transfer might take up to 2 weeks!)
I would be paying VAT in Germany for another thing.
There used to be an eBay seller, but he disappeared.

Thanks!
William

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Re: replacement screens for USA owners of OM Freerunner

2011-07-13 Thread matteo sanvy
did you tried from handheld-linux? i noticed that they sell displays
for GTA-04 project, maybe it is less expensive than Pulster...
here is a link ;)
http://www.handheld-linux.com/wiki.php?page=GTA04-Early-Adopter

Best Regards,
Sanvy

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Re: [QtMoko] Suggestion for an external mailing list

2011-07-13 Thread Alishams Hassam
badly isn't a word, it's poorly ;p but only grammar- I like the opinion.
Especially now that Radak plans on using FSO, posts are only going to get
more relevant to the community at large. The community of QTmoko is small
enough now that just one general mailing list is enough. If it ever gets the
size of SHR, then I would agree.

On Wed, Jul 13, 2011 at 9:30 AM, matteo sanvy sanvym...@gmail.com wrote:

 Hello Giotti :D
 I reply to confirm that I get this email 1 hour ago, so now it seems to
 work...
 Anyway, I think that we should keep this mailing list, because today
 this is the most followed by the whole community, and to see that this
 project is so well developed can make understand that not all is dead.
 This is my (badly expressed) opinion :)

 Best Regards

 Sanvy

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Re: [QtMoko] Suggestion for an external mailing list

2011-07-13 Thread Ranjit Pillai
yep, I do vote for a dedicated qtmoko mailing list(sf.net), but do
agree that subscribing to OM mailing list(little hiccups negligible
:)) is/was one of the best step ever in my life. I 'll prefer
following both  ML.

Rgds

On 7/14/11, Alishams Hassam alishams.has...@gmail.com wrote:
 badly isn't a word, it's poorly ;p but only grammar- I like the opinion.
 Especially now that Radak plans on using FSO, posts are only going to get
 more relevant to the community at large. The community of QTmoko is small
 enough now that just one general mailing list is enough. If it ever gets the
 size of SHR, then I would agree.

 On Wed, Jul 13, 2011 at 9:30 AM, matteo sanvy sanvym...@gmail.com wrote:

 Hello Giotti :D
 I reply to confirm that I get this email 1 hour ago, so now it seems to
 work...
 Anyway, I think that we should keep this mailing list, because today
 this is the most followed by the whole community, and to see that this
 project is so well developed can make understand that not all is dead.
 This is my (badly expressed) opinion :)

 Best Regards

 Sanvy

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 community@lists.openmoko.org
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-- 
Ranjit Pillai
gnumen.org

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