Problem with Pygaze OS plugins using xpyriment backend
Hi all and happy new year!
kicking it off, I am having problems using the xpyriment backend for my eyetracking experiment, using Tobii tx300 eyetracker.
first, the dimensions in which the calibration is presented in the screen as well as the entire experiment display in the screen seems off.
I am using a 1024 x 768 display, and while the pygame backend displays both the calibration and the experiment in those dimensions, when using the xpyriment backend the calibration dots don't move all the way to the coordinates of these coordinates, they occupy a much smaller rectangle (if you were tio draw one) and the same is true for the instructions in the experiment, even though the stimuli per se occupies the entire screen (1024x768) as it does with pygame. Also, the calibration only runs once, the validation is not shown, nor the results of the calibration, but I can see in the debug window that the calibration is usually unsuccessful when using this backend, while in pygame things go fine. As a result, my log files in xpyriment don't have any data, other than just the log messages. I can't quite get why is this happening.
A second issue is that when I look at the debug window while the experiment is running using the expyriment backend I get these warning] canvas.show() took 54.0 ms repeatedly.
Any ideas why this might be happening, as I would like to use xpyriment backend for timing purposes, and psycho backend is not working with my stimuli.
On another note, has anyone here experienced reduced sensitivity using tobii TX300, such that it affects you calibration or takes a while to find an ideal position for gaze tracking?
this is on windows 7, OS 3.2.5