# BETA UPDATED again...

**URL:** <https://psychtoolbox.discourse.group/t/beta-updated-again/1642>\
**Category:** Uncategorized\
**Created:** [June 12, 2006, 2:17am UTC](https://psychtoolbox.discourse.group/t/beta-updated-again/1642 "2006-06-12T02:17:20Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![mariokleiner](https://avatars.discourse-cdn.com/v4/letter/m/13edae/32.png) [@mariokleiner](https://psychtoolbox.discourse.group/u/mariokleiner)\
**Post date:** [June 12, 2006, 2:17am UTC](https://psychtoolbox.discourse.group/t/beta-updated-again/1642/1 "2006-06-12T02:17:20Z")

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This time new in beta:  
  
\* Support for automatic full-scene anti-aliasing:  
  
See "Screen OpenWindow?" - the online help for the new optional  
parameter 'multiSample' and message 4574 for explanation.  
  
This needs a modern graphics card to work and will do nothing on older  
hardware. On OS-X all cards except the Rage128 (Pro) should work with  
up to 4x multisampling, although the NVidia GeForceFX5200 seems to be  
broken with OS-X 10.4.6 wrt. this (driver bug?).  
  
On other OS'es support depends on your hardware. GeForce 3 and higher  
should work.  
  
\* GetMouse on M$-Windows now correctly reports mouse button state.  
  
\* DownloadPsychtoolbox and UpdatePsychtoolbox fixed based on Daniel  
Shimas comments. Well mostly: Matlab will still throw a warning  
regarding rethrow.m  
  
\* There's a new implementatin of GetChar() for MacOS-X in this  
release, written by Allen Ingling. This one is based on Java and seems  
to work very reliably afaict. It won't work in matlab -nojvm mode, so  
don't update now if you need to run matlab -nojvm. A future release  
will automatically switch between the old GetChar for -nojvm mode and  
the new GetChar for JVM mode.  
  
UpdatePsychtoolbox now also allows you to \*downgrade\* Psychtoolbox. In  
case you encounter a bug after an update, that wasn't present in an  
earlier release, you can downgrade to an earlier release by specifying  
the new optional 'targetRevision' parameter, setting it to 'PREV' to  
downgrade in decrements of 1 version per call to UpdatePsychtoolbox.  
See 'help UpdatePsychtoolbox' for further explanation.  
  
This is especially useful in case the newest beta makes trouble,  
because i'll be offline for most of this week ;) - Other than that,  
hopefully there won't be much need to downgrade.  
  
enjoy,  
-mario