[Bug 5876] big xvideo issues with ATI Radeon RV100 family (Mobility M6 LY, ...)

bugzilla-daemon at annarchy.freedesktop.org bugzilla-daemon at annarchy.freedesktop.org
Mon Dec 4 15:38:44 PST 2006

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------- Additional Comments From sroland at tungstengraphics.com  2006-12-04 15:38 -------
I actually think now the behaviour is correct. At least the "tearing" I got when
making the driver wait wasn't tearing, but simply the result of the asynchronous
X protocol. What happens if the driver is too slow is that somewhere those
XvPutImage requests get queued up. Since mplayer only uses 2 different buffers,
and the driver just does all requests in-order, it will end up copying buffers
which no longer exist (i.e. have been replaced with newer data), if it gets
enough cpu time (that is, if it had 20 requests queued up, and would now get
enough cpu time it would copy the newest 2 buffers for 10 times till the queue
is empty), which will obviously look broken as the image gets back in time...
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