/*
 * Render the contents of this window. First polish, then sync, render
 * then finally swap.
 *
 * Note: This render function does not implement aborting
 * the render call when sync step results in no scene graph changes,
 * like the threaded renderer does.
 */
void QSGWindowsRenderLoop::renderWindow(QQuickWindow *window)
{
    RLDEBUG("renderWindow");
    QQuickWindowPrivate *d = QQuickWindowPrivate::get(window);

    if (!d->isRenderable())
        return;

    if (!m_gl->makeCurrent(window))
        return;

    QSG_RENDER_TIMING_SAMPLE(time_start);

    RLDEBUG(" - polishing");
    d->polishItems();
    QSG_RENDER_TIMING_SAMPLE(time_polished);

    RLDEBUG(" - syncing");
    d->syncSceneGraph();
    QSG_RENDER_TIMING_SAMPLE(time_synced);

    RLDEBUG(" - rendering");
    d->renderSceneGraph(window->size());
    QSG_RENDER_TIMING_SAMPLE(time_rendered);

    RLDEBUG(" - swapping");
    m_gl->swapBuffers(window);
    QSG_RENDER_TIMING_SAMPLE(time_swapped);

    RLDEBUG(" - frameDone");
    d->fireFrameSwapped();

#ifndef QSG_NO_RENDER_TIMING
        if (qsg_render_timing) {
            qDebug("WindowsRenderLoop(t=%d): window=%p, polish=%d ms, sync=%d ms, render=%d ms, swap=%d ms",
                   int(qsg_render_timer.elapsed()),
                   window,
                   int((time_polished - time_start)/1000000),
                   int((time_synced - time_polished)/1000000),
                   int((time_rendered - time_synced)/1000000),
                   int((time_swapped - time_rendered)/1000000));
        }
        if (QQmlProfilerService::enabled) {
            QQmlProfilerService::sceneGraphFrame(
                        QQmlProfilerService::SceneGraphWindowsPolishFrame,
                        time_polished - time_start
                        );

            QQmlProfilerService::sceneGraphFrame(
                        QQmlProfilerService::SceneGraphRenderLoopFrame,
                        time_synced - time_polished,
                        time_rendered - time_synced,
                        time_swapped - time_rendered
                        );
        }
#endif
}
QImage QSGWindowsRenderLoop::grab(QQuickWindow *window)
{
    RLDEBUG("grab");
    if (!m_gl)
        return QImage();

    m_gl->makeCurrent(window);

    QQuickWindowPrivate *d = QQuickWindowPrivate::get(window);
    d->polishItems();
    d->syncSceneGraph();
    d->renderSceneGraph(window->size());

    QImage image = qt_gl_read_framebuffer(window->size() * window->effectiveDevicePixelRatio(), false, false);
    return image;
}
QImage QSGWindowsRenderLoop::grab(QQuickWindow *window)
{
    RLDEBUG("grab");
    if (!m_gl)
        return QImage();

    m_gl->makeCurrent(window);

    QQuickWindowPrivate *d = QQuickWindowPrivate::get(window);
    d->polishItems();
    d->syncSceneGraph();
    d->renderSceneGraph(window->size());

    bool alpha = window->format().alphaBufferSize() > 0 && window->color().alpha() != 255;
    QImage image = qt_gl_read_framebuffer(window->size() * window->effectiveDevicePixelRatio(), alpha, alpha);
    return image;
}
/*
 * Render the contents of this window. First polish, then sync, render
 * then finally swap.
 *
 * Note: This render function does not implement aborting
 * the render call when sync step results in no scene graph changes,
 * like the threaded renderer does.
 */
void QSGWindowsRenderLoop::renderWindow(QQuickWindow *window)
{
    RLDEBUG("renderWindow");
    QQuickWindowPrivate *d = QQuickWindowPrivate::get(window);

    if (!d->isRenderable())
        return;

    if (!m_gl->makeCurrent(window)) {
        // Check for context loss.
        if (!m_gl->isValid()) {
            d->cleanupNodesOnShutdown();
            m_rc->invalidate();
            if (m_gl->create() && m_gl->makeCurrent(window))
                m_rc->initialize(m_gl);
            else
                return;
        }
    }

    d->flushDelayedTouchEvent();
    // Event delivery or processing has caused the window to stop rendering.
    if (!windowData(window))
        return;

    QSG_LOG_TIME_SAMPLE(time_start);
    Q_QUICK_SG_PROFILE_START(QQuickProfiler::SceneGraphPolishFrame);

    RLDEBUG(" - polishing");
    d->polishItems();
    QSG_LOG_TIME_SAMPLE(time_polished);
    Q_QUICK_SG_PROFILE_SWITCH(QQuickProfiler::SceneGraphPolishFrame,
                              QQuickProfiler::SceneGraphRenderLoopFrame);

    emit window->afterAnimating();

    RLDEBUG(" - syncing");
    d->syncSceneGraph();
    QSG_RENDER_TIMING_SAMPLE(QQuickProfiler::SceneGraphRenderLoopFrame, time_synced);

    RLDEBUG(" - rendering");
    d->renderSceneGraph(window->size());
    QSG_RENDER_TIMING_SAMPLE(QQuickProfiler::SceneGraphRenderLoopFrame, time_rendered);

    RLDEBUG(" - swapping");
    if (!d->customRenderStage || !d->customRenderStage->swap())
        m_gl->swapBuffers(window);
    QSG_RENDER_TIMING_SAMPLE(QQuickProfiler::SceneGraphRenderLoopFrame, time_swapped);

    RLDEBUG(" - frameDone");
    d->fireFrameSwapped();

    qCDebug(QSG_LOG_TIME_RENDERLOOP()).nospace()
            << "Frame rendered with 'windows' renderloop in: " << (time_swapped - time_start) / 1000000 << "ms"
            << ", polish=" << (time_polished - time_start) / 1000000
            << ", sync=" << (time_synced - time_polished) / 1000000
            << ", render=" << (time_rendered - time_synced) / 1000000
            << ", swap=" << (time_swapped - time_rendered) / 1000000
            << " - " << window;

    Q_QUICK_SG_PROFILE_REPORT(QQuickProfiler::SceneGraphRenderLoopFrame);
}
void QQuickTrivialWindowManager::renderWindow(QQuickWindow *window)
{
    bool renderWithoutShowing = QQuickWindowPrivate::get(window)->renderWithoutShowing;
    if ((!window->isExposed() && !renderWithoutShowing) || !m_windows.contains(window))
        return;

    WindowData &data = const_cast<WindowData &>(m_windows[window]);

    QQuickWindow *masterWindow = 0;
    if (!window->isVisible() && !renderWithoutShowing) {
        // Find a "proper surface" to bind...
        for (QHash<QQuickWindow *, WindowData>::const_iterator it = m_windows.constBegin();
             it != m_windows.constEnd() && !masterWindow; ++it) {
            if (it.key()->isVisible())
                masterWindow = it.key();
        }
    } else {
        masterWindow = window;
    }

    if (!masterWindow)
        return;

    if (!QQuickWindowPrivate::get(masterWindow)->isRenderable()) {
        qWarning().nospace()
            << "Unable to find a renderable master window "
            << masterWindow << "when trying to render"
            << window << " (" << window->geometry() << ").";
        return;
    }

    if (!gl) {
        gl = new QOpenGLContext();
        gl->setFormat(masterWindow->requestedFormat());
        gl->create();
        if (!gl->makeCurrent(masterWindow))
            qWarning("QQuickWindow: makeCurrent() failed...");
        sg->initialize(gl);
    } else {
        gl->makeCurrent(masterWindow);
    }

    bool alsoSwap = data.updatePending;
    data.updatePending = false;

    QQuickWindowPrivate *cd = QQuickWindowPrivate::get(window);
    cd->polishItems();

    int renderTime = 0, syncTime = 0;
    QTime renderTimer;
    if (qquick_render_timing())
        renderTimer.start();

    cd->syncSceneGraph();

    if (qquick_render_timing())
        syncTime = renderTimer.elapsed();

    cd->renderSceneGraph(window->size());

    if (qquick_render_timing())
        renderTime = renderTimer.elapsed() - syncTime;

    if (data.grabOnly) {
        grabContent = qt_gl_read_framebuffer(window->size(), false, false);
        data.grabOnly = false;
    }

    if (alsoSwap && window->isVisible()) {
        gl->swapBuffers(window);
        cd->fireFrameSwapped();
    }

    if (qquick_render_timing()) {
        static QTime lastFrameTime = QTime::currentTime();
        const int swapTime = renderTimer.elapsed() - renderTime - syncTime;
        qDebug() << "- Breakdown of frame time; sync:" << syncTime
                 << "ms render:" << renderTime << "ms swap:" << swapTime
                 << "ms total:" << swapTime + renderTime + syncTime
                 << "ms time since last frame:" << (lastFrameTime.msecsTo(QTime::currentTime()))
                 << "ms";
        lastFrameTime = QTime::currentTime();
    }

    // Might have been set during syncSceneGraph()
    if (data.updatePending)
        maybeUpdate(window);
}
Exemple #6
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void QSGSoftwareRenderLoop::renderWindow(QQuickWindow *window, bool isNewExpose)
{
    QQuickWindowPrivate *cd = QQuickWindowPrivate::get(window);
    if (!m_windows.contains(window))
        return;

    WindowData &data = const_cast<WindowData &>(m_windows[window]);

    //If were not in grabOnly mode, dont render a non-renderable window
    if (!data.grabOnly && !cd->isRenderable())
        return;

    //Resize the backing store if necessary
    if (m_backingStores[window]->size() != window->size()) {
        m_backingStores[window]->resize(window->size());
    }

    // ### create QPainter and set up pointer to current window/painter
    QSGSoftwareRenderContext *ctx = static_cast<QSGSoftwareRenderContext*>(cd->context);
    ctx->initializeIfNeeded();

    bool alsoSwap = data.updatePending;
    data.updatePending = false;

    if (!data.grabOnly) {
        cd->flushFrameSynchronousEvents();
        // Event delivery/processing triggered the window to be deleted or stop rendering.
        if (!m_windows.contains(window))
            return;
    }
    QElapsedTimer renderTimer;
    qint64 renderTime = 0, syncTime = 0, polishTime = 0;
    bool profileFrames = QSG_RASTER_LOG_TIME_RENDERLOOP().isDebugEnabled();
    if (profileFrames)
        renderTimer.start();
    Q_QUICK_SG_PROFILE_START(QQuickProfiler::SceneGraphPolishFrame);

    cd->polishItems();

    if (profileFrames)
        polishTime = renderTimer.nsecsElapsed();
    Q_QUICK_SG_PROFILE_SWITCH(QQuickProfiler::SceneGraphPolishFrame,
                              QQuickProfiler::SceneGraphRenderLoopFrame,
                              QQuickProfiler::SceneGraphPolishPolish);

    emit window->afterAnimating();

    cd->syncSceneGraph();
    rc->endSync();

    if (profileFrames)
        syncTime = renderTimer.nsecsElapsed();
    Q_QUICK_SG_PROFILE_RECORD(QQuickProfiler::SceneGraphRenderLoopFrame,
                              QQuickProfiler::SceneGraphRenderLoopSync);

    //Tell the renderer about the windows backing store
    auto softwareRenderer = static_cast<QSGSoftwareRenderer*>(cd->renderer);
    if (softwareRenderer)
        softwareRenderer->setBackingStore(m_backingStores[window]);

    cd->renderSceneGraph(window->size());

    if (profileFrames)
        renderTime = renderTimer.nsecsElapsed();
    Q_QUICK_SG_PROFILE_RECORD(QQuickProfiler::SceneGraphRenderLoopFrame,
                              QQuickProfiler::SceneGraphRenderLoopRender);

    if (data.grabOnly) {
        grabContent = m_backingStores[window]->handle()->toImage();
        data.grabOnly = false;
    }

    if (alsoSwap && window->isVisible()) {
        //Flush backingstore to window
        if (!isNewExpose)
            m_backingStores[window]->flush(softwareRenderer->flushRegion());
        else
            m_backingStores[window]->flush(QRegion(QRect(QPoint(0,0), window->size())));
        cd->fireFrameSwapped();
    }

    qint64 swapTime = 0;
    if (profileFrames)
        swapTime = renderTimer.nsecsElapsed();
    Q_QUICK_SG_PROFILE_END(QQuickProfiler::SceneGraphRenderLoopFrame,
                           QQuickProfiler::SceneGraphRenderLoopSwap);

    if (QSG_RASTER_LOG_TIME_RENDERLOOP().isDebugEnabled()) {
        static QTime lastFrameTime = QTime::currentTime();
        qCDebug(QSG_RASTER_LOG_TIME_RENDERLOOP,
                "Frame rendered with 'software' renderloop in %dms, polish=%d, sync=%d, render=%d, swap=%d, frameDelta=%d",
                int(swapTime / 1000000),
                int(polishTime / 1000000),
                int((syncTime - polishTime) / 1000000),
                int((renderTime - syncTime) / 1000000),
                int((swapTime - renderTime) / 10000000),
                int(lastFrameTime.msecsTo(QTime::currentTime())));
        lastFrameTime = QTime::currentTime();
    }

    // Might have been set during syncSceneGraph()
    if (data.updatePending)
        maybeUpdate(window);
}