OSX Roadmap?

1
Hi,

Does anyone know if the developers have released the updates
on the posted OSX 'Roadmap'? From what I can tell, the latest
OSX version is still 1.0.5. I am particularly interested in
showing long movies (> 4000 frames). If anyone can suggest a
good hack to do this, that would be great too.

Thanks,

Nick Lesica

_____________________

Roadmap

The current OS X Psychtoolbox is version 1.0.5, released on 11 April
2005. Here is the schedule for future releases. Major features and
bugs are listed as milestones.
Version Date

Milestone
1.0.6 June 1 Adds LoadClut and Screen('Gamma')
1.0.7 June 8 Fixes GetChar
1.0.8 June 28

Support for 8-bit CLUT animation
1.0.9 July 10 Adds rotation for drawing
1.1.0 July 20 Unlimited number of offscreen windows and textures
2
Thanks Mario, it seems to be working well, and the time to create all
the textures is not as bad as I thought it would be.

Nick


--- In psychtoolbox@yahoogroups.com, "Mario Kleiner"
<mario.kleiner@t...> wrote:
> The blue screen at the beginning is ok. Screen('OpenWindow') performs
> a couple of internal tests & calibrations when called. During this
> period
> it shows a blue screen to notify you about that -- and because i like
> blue screens ;)
>
> You can shorten the "blue screen period" via the command...
> Screen('Preference', 'SkipSyncTests', 1);
> ...at the risk of some problems with your setup going unnoticed
> that PTB would have otherwise detected and reported to you.
> --> use this command only during debugging & development,
> not when running real studies.
>
> Your textures appear blurry because PTB does bilinear texture
> filtering by default since this version. You can get the old
> nearest-neighbour filtering back by providing an additional
> parameter filterMode=0 to Screen('DrawTexture').
>
> Type "Screen DrawTexture?" at the Matlab-prompt for usage info.
>
> I've just updated the code to add this option. You'll find the Zip
> file with
> the new Screen.mexmac again on my webpage. Our webserver
> needs time for updating, so the update should be available around
> Sunday morning 4.00 am CEST.
>
> The bugs reported by Frans Cornelissen are also fixed and a new
> demo illustrates how to do gaze-contingent displays.
>
> URL:
>
> <http://www.kyb.tuebingen.mpg.de/bu/people/kleinerm/ptbosx/>
>
> Btw.: What is the squeeze() command in your script supposed to do?
> If i understand its meaning correctly then it shouldn't have any
> effect,
> except wasting a bit of computation time?
>
> best,
> -mario
>
>
>
> --- In psychtoolbox@yahoogroups.com, "lesica3" <lesica3@y...> wrote:
> > Thanks Mario, I think this will work well.
> > However, I'm having some trouble with the new version.
> >
> > All I did was replace the old Screen.mex file with the new one.
> > Is there more to do?
> >
> > The behavior of my program differs with the new Screen file.
> > First, when I start my program the screen goes blue for a few
> seconds
> > before the desired behavior starts.
> > Second, when I show my white-noise checkerboard there are some
> > problems. The image is 64 x 64 squares, with each square about 6 x 6
> > pixels. When I show with old Screen file, the squares are nice and
> > crisp. When I show with the new file, its as if the whole board has
> > been convolved with a 2D Gaussian -- the squares bleed into each
> other.
> >
> > Any idea what is going on?
> >
> > Here is some of the code for your reference:
> >
> > [w,rect]=Screen('OpenWindow',screenNumber,0,[],8,2);
> > for i=1:1000,
> > tex(i)=Screen('MakeTexture',w,squeeze(Intensities(i,:,:))');
> > end
> >
> > for i=1:1000,
> > Screen('DrawTexture',w,tex(i),[1 1 64 64],[177 17 624 464]);
> > Screen('Flip', w);
> > end
> >
> > Let me know if you need any more information.
> >
> > Thanks!
> >
> > Nick
> >
> > --- In psychtoolbox@yahoogroups.com, "Mario Kleiner"
> > <mario.kleiner@t...> wrote:
> > > Hello,
> > >
> > > please read my forum message about the "NEW PTB 1.0.6 prerelease"
> > > and follow the download-instructions on the website.
> > >
> > > The Screen.mexmac file in that update removes the max.
> > > 4000 offscreen windows limit. It allows for a number of
> > > offscreen windows/textures that is only limited by the
> > > available system memory in your computer.
> > >
> > > Regarding the "saving the textures" question: Sorry. That would
> > > require us to implement our own binary load-/save - routines
> > > for textures with our own proprietary data-format. Not so great
> > > and certainly nothing that will happen soonish, as the MakeTexture
> > > and DrawTexture implementation is going to change in the next
> > > PTB release anyway...
> > >
> > > I agree with you that loading 20000 textures will take a lot
> > > of time.
> > >
> > > What kind of stimuli do you use? Maybe you could create them
> > > on-the-fly in your presentation loop instead of precreating them
> > > as image files?
> > >
> > > If you can't do that (e.g., real natural movie sequence), it may
> be
> > > possible to just create a texture before drawing it, instead of
> > > Loading- Making all textures before the trial?
> > >
> > > Something like...
> > >
> > > for i=1:20000
> > > img = imread(imagename(i));
> > > tex = Screen('MakeTexture', window, img);
> > > Screen('DrawTexture', window, tex);
> > > Screen('Close', tex);
> > > Screen('Flip');
> > > end;
> > >
> > > ... Maybe your machine is fast enough for this? - I never tried
> it...
> > >
> > > You could also try encoding your movie as an AVI file and then
> > > read it via Matlabs "aviread" command instead of imread, that
> > > may give you faster disk read speeds... - Never tried that
> either...
> > >
> > > ciao,
> > > -mario
> > >
> > > --- In psychtoolbox@yahoogroups.com, "lesica3" <lesica3@y...>
> wrote:
> > > > Hi,
> > > >
> > > > 25,000 would be great. I have another related question. Now, to
> > > > show a movie, I must make all the textures before showing them.
> > > > There is a significant latency when making a few
> > > > thousand textures, and I'm sure it will be quite long for
> 20,000.
> > > > But I am always showing the same movies, so if I could save the
> > > > textures, and just load them before each run, rather than
> recreating
> > > > them from my image files before each run, it would save a lot
> of
> > > > time. Am I being clear? According to the documentation, the
> > > > textures are all stored in regular memory after they are made,
> > > > just like any other variable, but they are currently not
> directly
> > > > accessible, i.e. the only thing in my workspace is the array
> > > > of pointers to each texture, but not the textures themselves.
> > > > Any thoughts on this? Thanks,
> > > >
> > > > Nick
> > > >
> > > > --- In psychtoolbox@yahoogroups.com, "Mario Kleiner"
> > > > <mario.kleiner@t...> wrote:
> > > > > How long would be long enough? The current maximum
> > > > > number of offscreen-windows / textures is 4000, but that
> > > > > can be easily changed by modifying a constant in the source
> > > > > code and recompiling, albeit at the cost of wasted memory -
> > > > > one pays 4 Bytes per window.
> > > > >
> > > > > Would 25000 be enough for your current purpose?
> > > > >
> > > > > gr.,
> > > > > -mario
> > > > >
> > > > >
> > > > > --- In psychtoolbox@yahoogroups.com, "lesica3" <lesica3@y...>
> > > wrote:
> > > > > > Hi,
> > > > > >
> > > > > > Does anyone know if the developers have released the updates
> > > > > > on the posted OSX 'Roadmap'? From what I can tell, the
> latest
> > > > > > OSX version is still 1.0.5. I am particularly interested in
> > > > > > showing long movies (> 4000 frames). If anyone can suggest
> a
> > > > > > good hack to do this, that would be great too.
> > > > > >
> > > > > > Thanks,
> > > > > >
> > > > > > Nick Lesica
> > > > > >
> > > > > > _____________________
> > > > > >
> > > > > > Roadmap
> > > > > >
> > > > > > The current OS X Psychtoolbox is version 1.0.5, released on
> 11
> > > April
> > > > > > 2005. Here is the schedule for future releases. Major
> features
> > > and
> > > > > > bugs are listed as milestones.
> > > > > > Version Date
> > > > > >
> > > > > > Milestone
> > > > > > 1.0.6 June 1 Adds LoadClut and Screen('Gamma')
> > > > > > 1.0.7 June 8 Fixes GetChar
> > > > > > 1.0.8 June 28
> > > > > >
> > > > > > Support for 8-bit CLUT animation
> > > > > > 1.0.9 July 10 Adds rotation for drawing
> > > > > > 1.1.0 July 20 Unlimited number of offscreen windows and
> > > textures