Method notifyFrameCompleted

src/core/renderloop.cpp:143–174

}

void RenderLoopPrivate::notifyFrameCompleted(std::chrono::nanoseconds timestamp, std::optional<RenderTimeSpan> renderTime, PresentationMode mode, OutputFrame *frame)
{
    if (output && s_printDebugInfo && !m_debugOutput) {
        m_debugOutput = std::fstream(qPrintable("kwin perf statistics " + output->name() + ".csv"), std::ios::out);
        *m_debugOutput << "target pageflip timestamp,pageflip timestamp,render start,render end,safety margin,refresh duration,vrr,tearing,predicted render time\n";
    }
    if (m_debugOutput) {
        auto times = renderTime.value_or(RenderTimeSpan{});
        const bool vrr = mode == PresentationMode::AdaptiveSync || mode == PresentationMode::AdaptiveAsync;
        const bool tearing = mode == PresentationMode::Async || mode == PresentationMode::AdaptiveAsync;
        *m_debugOutput << frame->targetPageflipTime().time_since_epoch().count() << "," << timestamp.count() << "," << times.start.time_since_epoch().count() << "," << times.end.time_since_epoch().count()
                       << "," << safetyMargin.count() << "," << frame->refreshDuration().count() << "," << (vrr ? 1 : 0) << "," << (tearing ? 1 : 0) << "," << frame->predictedRenderTime().count() << "\n";
    }

    Q_ASSERT(pendingFrameCount > 0);
    pendingFrameCount--;

    notifyVblank(timestamp);

    if (renderTime) {
        renderJournal.add(renderTime->end - renderTime->start, timestamp);
    }
    if (compositeTimer.isActive()) {
        // reschedule to match the new timestamp and render time
        scheduleRepaint(lastPresentationTimestamp);
    }
    if (!inhibitCount && pendingReschedule) {
        scheduleNextRepaint();
    }

    Q_EMIT q->framePresented(q, timestamp, mode);
}

void RenderLoopPrivate::notifyVblank(std::chrono::nanoseconds timestamp)
{