Re: capturing user reaction times in msecs
Re: capturing user reaction times in msecs
- Subject: Re: capturing user reaction times in msecs
- From: Scott Ribe <email@hidden>
- Date: Tue, 19 Dec 2006 09:07:03 -0700
- Thread-topic: capturing user reaction times in msecs
It's rather hard to know to ms precision when the display change actually
becomes visible. Everything is double-buffered and the system generally
updates the display on its own notion of when it "should", and of course in
the worst case some displays (60Hz interlaced) may take as much as ~30ms to
complete display of the new image.
I don't know if there's a way to find out accurately when the updated
display is actually flushed to the device. I've asked this question myself
before, and got no answer.
--
Scott Ribe
email@hidden
http://www.killerbytes.com/
(303) 722-0567 voice
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