Calcultate fps
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Hi,
I want to display number of frame per second (fps) in my user interface, is there a simple way to do this in Qt ? and in QML ?
Regards
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The example below illustrates how this can be done, it is based on how this is done internally in Qt:
@class FPS : public QWidget
{public:
FPS() : m_frameCount(0) {}void paintEvent(QPaintEvent *e) { if (m_frameCount == 0) { m_time.start(); } else { printf("FPS is %f ms\n", m_time.elapsed() / float(m_frameCount)); } m_frameCount++; // Painting goes here... } QTime m_time; int m_frameCount;
};@
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Nice, thanks for answer.
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That would gave you 'time elapsed per frame'. If you want 'frame per second' (FPS), your printf should be:
@printf("FPS is %f\n", m_frameCount / (float(m_timer.elapsed()) / 1000.0f));@