QT painter - tear issue.
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I have inherited the qtopengl - then the image in opencv Mat array is converted in to Q image,
then using QPainter i just painted the frames from the camera -
the tear issue is comming in the video .
when i save the video or the image its fine.
when i use imshow in opencv for display and the adjusting the force composition pipeline on the tear is not coming but the same thing not working in the QPainter disaplay ,f.i: the video from the camera rendering in 60 frames per second.
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You have reimplemented paintEvent(...) to show the images. Apart from drawing image what else are you doing inside the paintEvent(..) function ? Is there some operation inside the function taking time ?
