[visionegg] openGL dot drawing problem

Hello all, 

Should be a simple question (I hope).

I have a script that involves the movement of various circular items.  I simply
created my own Stimuli2D module based on the Target2D module, but using 
gl.glEnable( gl.GL_POINT_SMOOTH ) and             gl.glBegin(gl.GL_POINTS) to
draw a circular point.

This works fine for dots of any size on our PC and our G5 running Tiger, but
when trying to run the very same script on an older Powerbook G4 Titanium, ATI
64 MB video, running Panther (10.3.9), the resulting circles come out as
squares.

Tried updating to the latest Textures.py from the CVS repository, no difference.
 Even the dots.py demo shows squares moving instead of dots.

Is there an issue with the OpenGL implementation on this older G4?  (I wouldn't
think so, but who knows).

I've included the check-config.py dump at the end of this email... happy
holidays!

cheers, 
-=Gabriel Nevarez
Research Programmer
Psychology Department
Cardiff University
http://www.cf.ac.uk/psych

check-config.py dump:
check-config.py for Vision Egg 0.9.5a2.
[2003/09/19 03:54:27 CVS revision 1.19]
Beginning configuration check.
Mac OS X - It appears you are running this script
            from the commandline -- turning off GUIs.

VisionEgg version 1.0-cvs

VisionEgg modules in
/System/Library/Frameworks/Python.framework/Versions/2.3/lib/python2.3/site-packages/VisionEgg
VisionEgg system directory
/System/Library/Frameworks/Python.framework/Versions/2.3/VisionEgg
VisionEgg user directory /Users/alexholcombe/VisionEgg

Config file found at
/System/Library/Frameworks/Python.framework/Versions/2.3/VisionEgg/VisionEgg.cfg

SYNCLYNC_PRESENT = 0
VISIONEGG_ALWAYS_START_LOGGING = 0
VISIONEGG_CONFIG_FILE =
/System/Library/Frameworks/Python.framework/Versions/2.3/VisionEgg/VisionEgg.cfg
VISIONEGG_DARWIN_CONVENTIONAL_PRIORITY = -20
VISIONEGG_DARWIN_MAXPRIORITY_CONVENTIONAL_NOT_REALTIME = 1
VISIONEGG_DARWIN_PTHREAD_PRIORITY = max
VISIONEGG_DARWIN_REALTIME_COMPUTATION_DENOM = 2400
VISIONEGG_DARWIN_REALTIME_CONSTRAINT_DENOM = 1200
VISIONEGG_DARWIN_REALTIME_PERIOD_DENOM = 120
VISIONEGG_DARWIN_REALTIME_PREEMPTIBLE = 0
VISIONEGG_FRAMELESS_WINDOW = 0
VISIONEGG_FULLSCREEN = 1
VISIONEGG_GAMMA_FILE = 
VISIONEGG_GAMMA_INVERT_BLUE = 2.1
VISIONEGG_GAMMA_INVERT_GREEN = 2.1
VISIONEGG_GAMMA_INVERT_RED = 2.1
VISIONEGG_GAMMA_SOURCE = none
VISIONEGG_GUI_INIT = 1
VISIONEGG_GUI_ON_ERROR = 1
VISIONEGG_HIDE_MOUSE = 1
VISIONEGG_LOG_FILE = VisionEgg.log
VISIONEGG_LOG_TO_STDERR = 1
VISIONEGG_MAXPRIORITY = 0
VISIONEGG_MONITOR_REFRESH_HZ = 85.0
VISIONEGG_PREFERRED_BPP = 32
VISIONEGG_REQUEST_ALPHA_BITS = 0
VISIONEGG_REQUEST_BLUE_BITS = 8
VISIONEGG_REQUEST_GREEN_BITS = 8
VISIONEGG_REQUEST_RED_BITS = 8
VISIONEGG_REQUEST_STEREO = 0
VISIONEGG_SCREEN_H = 768
VISIONEGG_SCREEN_W = 1024
VISIONEGG_SYNC_SWAP = 1
VISIONEGG_SYSTEM_DIR =
/System/Library/Frameworks/Python.framework/Versions/2.3/VisionEgg
VISIONEGG_TKINTER_OK = 1
VISIONEGG_USER_DIR = /Users/alexholcombe/VisionEgg

Version checklist:

Python version 2.3 (OK)
extra Python info: (#1, Sep 13 2003, 00:49:11) [GCC 3.3 20030304 (Apple
Computer, Inc. build 1495)]
Numeric version 23.7 (OK)
PyOpenGL (package "OpenGL") version 2.0.2.01 (OK)
pygame version 1.7.0 (OK)
Python Imaging Library (package "Image") version 1.1.5 (OK)

Optional module(s):

Pyro version 3.4 (OK)
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