C++ QSGGeometryNode::geometry方法代码示例

void QSGNode::insertChildNodeBefore(QSGNode *node, QSGNode *before)
{
    //Q_ASSERT_X(!m_children.contains(node), "QSGNode::insertChildNodeBefore", "QSGNode is already a child!");
    Q_ASSERT_X(!node->m_parent, "QSGNode::insertChildNodeBefore", "QSGNode already has a parent");
    Q_ASSERT_X(before && before->m_parent == this, "QSGNode::insertChildNodeBefore", "The parent of \'before\' is wrong");

#ifndef QT_NO_DEBUG
    if (node->type() == QSGNode::GeometryNodeType) {
        QSGGeometryNode *g = static_cast<QSGGeometryNode *>(node);
        Q_ASSERT_X(g->material(), "QSGNode::insertChildNodeBefore", "QSGGeometryNode is missing material");
        Q_ASSERT_X(g->geometry(), "QSGNode::insertChildNodeBefore", "QSGGeometryNode is missing geometry");
    }
#endif

    QSGNode *previous = before->m_previousSibling;
    if (previous)
        previous->m_nextSibling = node;
    else
        m_firstChild = node;
    node->m_previousSibling = previous;
    node->m_nextSibling = before;
    before->m_previousSibling = node;
    node->m_parent = this;

    node->markDirty(DirtyNodeAdded);
}

void compareSelectionNode(QSGNode *node, const QRectF &rect, int selectionId)
{
    QSGGeometryNode *geometryNode = static_cast<QSGGeometryNode *>(node);
    QSGGeometry *geometry = geometryNode->geometry();
    QCOMPARE(geometry->vertexCount(), 4);
    QCOMPARE(geometry->drawingMode(), (GLenum)GL_TRIANGLE_STRIP);
    OpaqueColoredPoint2DWithSize *data =
            static_cast<OpaqueColoredPoint2DWithSize *>(geometry->vertexData());
    float *lowerLeft = reinterpret_cast<float *>(data);
    float *lowerRight = reinterpret_cast<float *>(++data);
    float *upperLeft = reinterpret_cast<float *>(++data);
    float *upperRight = reinterpret_cast<float *>(++data);

    QCOMPARE(QRectF(QPointF(upperLeft[0], upperLeft[1]), QPointF(lowerRight[0], lowerRight[1])),
            rect);
    QCOMPARE(lowerRight[0], upperRight[0]);
    QCOMPARE(lowerRight[1], lowerLeft[1]);
    QCOMPARE(upperLeft[0], lowerLeft[0]);
    QCOMPARE(upperLeft[1], upperRight[1]);

    QCOMPARE(int(lowerLeft[4]), selectionId);
    QCOMPARE(int(lowerRight[4]), selectionId);
    QCOMPARE(int(upperLeft[4]), selectionId);
    QCOMPARE(int(upperRight[4]), selectionId);

    TimelineItemsMaterial *material = static_cast<TimelineItemsMaterial *>(
                geometryNode->material());
    QVERIFY(!(material->flags() & QSGMaterial::Blending));
}

void QSGNode::insertChildNodeAfter(QSGNode *node, QSGNode *after)
{
    //Q_ASSERT_X(!m_children.contains(node), "QSGNode::insertChildNodeAfter", "QSGNode is already a child!");
    Q_ASSERT_X(!node->m_parent, "QSGNode::insertChildNodeAfter", "QSGNode already has a parent");
    Q_ASSERT_X(after && after->m_parent == this, "QSGNode::insertChildNodeAfter", "The parent of \'after\' is wrong");

#ifndef QT_NO_DEBUG
    if (node->type() == QSGNode::GeometryNodeType) {
        QSGGeometryNode *g = static_cast<QSGGeometryNode *>(node);
        Q_ASSERT_X(g->material(), "QSGNode::insertChildNodeAfter", "QSGGeometryNode is missing material");
        Q_ASSERT_X(g->geometry(), "QSGNode::insertChildNodeAfter", "QSGGeometryNode is missing geometry");
    }
#endif

    QSGNode *next = after->m_nextSibling;
    if (next)
        next->m_previousSibling = node;
    else
        m_lastChild = node;
    node->m_nextSibling = next;
    node->m_previousSibling = after;
    after->m_nextSibling = node;
    node->m_parent = this;

    node->markDirty(DirtyNodeAdded);
}

QSGNode *PhosphorRender::updatePaintNode(QSGNode *oldNode, UpdatePaintNodeData *)
{
    if (!m_ybuffer) {
        return 0;
    }

    QSGGeometryNode *node = 0;
    QSGGeometry *geometry = 0;
    Material *material = 0;

    unsigned n_points;

    if (m_xbuffer) {
        n_points = std::min(m_xbuffer->size(), m_ybuffer->size());
    } else {
        n_points = m_ybuffer->countPointsBetween(m_xmin, m_xmax);
    }

    n_points = std::min(n_points,(unsigned) 65767);

    if (!oldNode) {
        node = new QSGGeometryNode;
        geometry = new QSGGeometry(QSGGeometry::defaultAttributes_Point2D(), n_points);
        geometry->setDrawingMode(GL_POINTS);
        node->setGeometry(geometry);
        node->setFlag(QSGNode::OwnsGeometry);
        material = new Material;
        material->setFlag(QSGMaterial::Blending);
        node->setMaterial(material);
        node->setFlag(QSGNode::OwnsMaterial);
    } else {
        node = static_cast<QSGGeometryNode *>(oldNode);
        geometry = node->geometry();
        geometry->allocate(n_points);
        geometry->setLineWidth(m_pointSize);
        material = static_cast<Material*>(node->material());
    }

    QRectF bounds = boundingRect();

    material->transformation.setToIdentity();
    material->transformation.scale(bounds.width()/(m_xmax - m_xmin), bounds.height()/(m_ymin - m_ymax));
    material->transformation.translate(-m_xmin, -m_ymax);

    material->pointSize = m_pointSize;
    material->color = m_color;

    auto verticies = geometry->vertexDataAsPoint2D();
    if (m_xbuffer) {
        for (unsigned i=0; i<n_points; i++) {
            verticies[i].set(m_xbuffer->get(i), m_ybuffer->get(i));
        }
    } else {
        m_ybuffer->toVertexData(m_xmin, m_xmax, verticies, n_points);
    }
    node->markDirty(QSGNode::DirtyGeometry | QSGNode::DirtyMaterial);

    return node;
}

/*------------------------------------------------------------------------------
|    OMX_CameraSurfaceElement::updatePaintNode
+-----------------------------------------------------------------------------*/
QSGNode* OMX_CameraSurfaceElement::updatePaintNode(QSGNode* oldNode, UpdatePaintNodeData*)
{
    QSGGeometryNode* node = 0;
    QSGGeometry* geometry = 0;

    if (!oldNode) {
        // Create the node.
        node = new QSGGeometryNode;
        geometry = new QSGGeometry(QSGGeometry::defaultAttributes_TexturedPoint2D(), 4);
        geometry->setDrawingMode(GL_TRIANGLE_STRIP);
        node->setGeometry(geometry);
        node->setFlag(QSGNode::OwnsGeometry);

        // TODO: Who is freeing this?
        // TODO: I cannot know the texture size here.
        QSGOpaqueTextureMaterial* material = new QSGOpaqueTextureMaterial;
        m_sgtexture = new OMX_SGTexture(0, QSize(640, 480));
        material->setTexture(m_sgtexture);
        node->setMaterial(material);
        node->setFlag(QSGNode::OwnsMaterial);

        QtConcurrent::run(this, &OMX_CameraSurfaceElement::videoAcquire);
    }
    else {
        node = static_cast<QSGGeometryNode*>(oldNode);
        geometry = node->geometry();
        geometry->allocate(4);

        // Update texture in the node if needed.
        QSGOpaqueTextureMaterial* material = (QSGOpaqueTextureMaterial*)node->material();
        QElapsedTimer timer;
        timer.start();
        QSGTexture* texture = window()->createTextureFromImage(m_frame);
        LOG_VERBOSE(LOG_TAG, "Timer tex: %lld.", timer.elapsed());
        material->setTexture(texture);
        m_semAcquire.release();
#if 0
        if (m_texture != (GLuint)material->texture()->textureId()) {
            // TODO: Does setTextureId frees the prev texture?
            // TODO: I should the given the texture size.
            LOG_ERROR(LOG_TAG, "Updating texture to %u!", m_texture);
            material = new QSGOpaqueTextureMaterial;
            m_sgtexture->setTexture(m_texture, QSize(1920, 1080));
        }
#endif
    }

    // Create the vertices and map to texture.
    QRectF bounds = boundingRect();
    QSGGeometry::TexturedPoint2D* vertices = geometry->vertexDataAsTexturedPoint2D();
    vertices[0].set(bounds.x(), bounds.y() + bounds.height(), 0.0f, 0.0f);
    vertices[1].set(bounds.x() + bounds.width(), bounds.y() + bounds.height(), 1.0f, 0.0f);
    vertices[2].set(bounds.x(), bounds.y(), 0.0f, 1.0f);
    vertices[3].set(bounds.x() + bounds.width(), bounds.y(), 1.0f, 1.0f);
    return node;
}

QSGNode * QQuickLineItem::updatePaintNode(QSGNode *prev_node,
                                          UpdatePaintNodeData *upd_data)
{
    Q_UNUSED(upd_data);

    QSGGeometryNode * node = static_cast<QSGGeometryNode*>(prev_node);
    QSGGeometry * geometry = NULL;
    QSGFlatColorMaterial * material = NULL;

    if(!node) {
        // http://qt-project.org/doc/qt-5/qsggeometrynode.html
        node = new QSGGeometryNode;
        geometry = new QSGGeometry(QSGGeometry::defaultAttributes_Point2D(),4);
        geometry->setDrawingMode(GL_TRIANGLE_STRIP);
        node->setGeometry(geometry);
        node->setFlag(QSGNode::OwnsGeometry);

        material = new QSGFlatColorMaterial;
        material->setColor(m_color);
        node->setMaterial(material);
        node->setFlag(QSGNode::OwnsMaterial);
    }
    else {
        geometry = node->geometry();
        geometry->allocate(4); // we have to call allocate to invalidate
                               // the older vertex buffer
        material = static_cast<QSGFlatColorMaterial*>(node->material());
    }

    // geometry
    std::vector<QPointF> list_vx;
    if(!calcTriStrip(list_vx)) {
        list_vx.clear();
        list_vx.push_back(QPointF(0,0));
        list_vx.push_back(QPointF(0,0));
        list_vx.push_back(QPointF(0,0));
        list_vx.push_back(QPointF(0,0));
    }

    QSGGeometry::Point2D * vertices =
            geometry->vertexDataAsPoint2D();

    for(size_t i=0; i < list_vx.size(); i++) {
        vertices[i].set(list_vx[i].x(),
                        list_vx[i].y());
    }

    node->markDirty(QSGNode::DirtyGeometry);

    // material
    material->setColor(m_color);
    node->markDirty(QSGNode::DirtyMaterial);

    return node;
}

//! [4]
QSGNode *BezierCurve::updatePaintNode(QSGNode *oldNode, UpdatePaintNodeData *)
{
    QSGGeometryNode *node = 0;
    QSGGeometry *geometry = 0;

    if (!oldNode) {
        node = new QSGGeometryNode;
//! [4] //! [5]
        geometry = new QSGGeometry(QSGGeometry::defaultAttributes_Point2D(), m_segmentCount);
        geometry->setLineWidth(2);
        geometry->setDrawingMode(GL_LINE_STRIP);
        node->setGeometry(geometry);
        node->setFlag(QSGNode::OwnsGeometry);
//! [5] //! [6]
        QSGFlatColorMaterial *material = new QSGFlatColorMaterial;
        material->setColor(QColor(255, 0, 0));
        node->setMaterial(material);
        node->setFlag(QSGNode::OwnsMaterial);
//! [6] //! [7]
    } else {
        node = static_cast<QSGGeometryNode *>(oldNode);
        geometry = node->geometry();
        geometry->allocate(m_segmentCount);
    }
//! [7]

//! [8]
    QRectF bounds = boundingRect();
    QSGGeometry::Point2D *vertices = geometry->vertexDataAsPoint2D();
    for (int i = 0; i < m_segmentCount; ++i) {
        qreal t = i / qreal(m_segmentCount - 1);
        qreal invt = 1 - t;

        QPointF pos = invt * invt * invt * m_p1
                    + 3 * invt * invt * t * m_p2
                    + 3 * invt * t * t * m_p3
                    + t * t * t * m_p4;

        float x = bounds.x() + pos.x() * bounds.width();
        float y = bounds.y() + pos.y() * bounds.height();

        vertices[i].set(x, y);
    }
    node->markDirty(QSGNode::DirtyGeometry);
//! [8]


//! [9]
    return node;
}

Point2DWithOffset *BindlingLoopsGeometry::vertexData()
{
    QSGGeometry *geometry = node->geometry();
    Q_ASSERT(geometry->attributeCount() == 2);
    Q_ASSERT(geometry->sizeOfVertex() == sizeof(Point2DWithOffset));
    const QSGGeometry::Attribute *attributes = geometry->attributes();
    Q_ASSERT(attributes[0].position == 0);
    Q_ASSERT(attributes[0].tupleSize == 2);
    Q_ASSERT(attributes[0].type == GL_FLOAT);
    Q_ASSERT(attributes[1].position == 1);
    Q_ASSERT(attributes[1].tupleSize == 2);
    Q_ASSERT(attributes[1].type == GL_FLOAT);
    Q_UNUSED(attributes);
    return static_cast<Point2DWithOffset *>(geometry->vertexData());
}

QSGNode *QPScrollingCurve::updatePaintNode(QSGNode *oldNode, QQuickItem::UpdatePaintNodeData *)
{
    QSGGeometryNode *node = 0;
    QSGGeometry *geometry = 0;
    QSGFlatColorMaterial *material = 0;

    if (!oldNode) {
        node = new QSGGeometryNode;
        geometry = new QSGGeometry(QSGGeometry::defaultAttributes_Point2D(), m_data.size());
        geometry->setLineWidth(2);
        geometry->setDrawingMode(GL_LINE_STRIP);
        node->setGeometry(geometry);
        node->setFlag(QSGNode::OwnsGeometry);
        material = new QSGFlatColorMaterial;
        material->setColor(m_color);
        node->setMaterial(material);
        node->setFlag(QSGNode::OwnsMaterial);
        node->markDirty(QSGNode::DirtyMaterial);
    } else {
        node = static_cast<QSGGeometryNode *>(oldNode);
        geometry = node->geometry();
        geometry->allocate(m_data.size());
        material = static_cast<QSGFlatColorMaterial*>(node->material());
        if (material->color() != m_color) {
            material->setColor(m_color);
            node->markDirty(QSGNode::DirtyMaterial);
        }
    }

    QSGGeometry::Point2D *vertices = geometry->vertexDataAsPoint2D();

    for (uint i = 0; i < m_data.size(); ++i) {
        QPointF p(i, m_data[i]);
        vertices[i].set(p.x(), p.y());
    }

    node->markDirty(QSGNode::DirtyGeometry);

    return node;
}

QSGNode* drawRect(const QRect& rect, QSGNode* oldNode)
{
    QSGGeometryNode* node;
    if (oldNode == nullptr)
    {
        node = new QSGGeometryNode;

        QSGGeometry* geometry = new QSGGeometry(QSGGeometry::defaultAttributes_Point2D(), 8);
        geometry->setDrawingMode(GL_LINES);
        geometry->setLineWidth(1);

        QSGFlatColorMaterial* material = new QSGFlatColorMaterial;
        material->setColor(QGuiApplication::palette().color(QPalette::Normal, QPalette::WindowText));

        node->setGeometry(geometry);
        node->setFlag(QSGNode::OwnsGeometry);
        node->setMaterial(material);
        node->setFlag(QSGNode::OwnsMaterial);
    }
    else
    {
        node = static_cast<QSGGeometryNode*>(oldNode);
    }

    QSGGeometry* geometry = node->geometry();

    // FIXME: check if these really have to be updated
    geometry->vertexDataAsPoint2D()[0].set(rect.topLeft().x(), rect.topLeft().y());
    geometry->vertexDataAsPoint2D()[1].set(rect.topRight().x(), rect.topRight().y());
    geometry->vertexDataAsPoint2D()[2].set(rect.topRight().x(), rect.topRight().y());
    geometry->vertexDataAsPoint2D()[3].set(rect.bottomRight().x(), rect.bottomRight().y());
    geometry->vertexDataAsPoint2D()[4].set(rect.bottomRight().x(), rect.bottomRight().y());
    geometry->vertexDataAsPoint2D()[5].set(rect.bottomLeft().x(), rect.bottomLeft().y());
    geometry->vertexDataAsPoint2D()[6].set(rect.bottomLeft().x(), rect.bottomLeft().y());
    geometry->vertexDataAsPoint2D()[7].set(rect.topLeft().x(), rect.topLeft().y());

    node->markDirty(QSGNode::DirtyGeometry);

    return node;
}

void QSGNode::appendChildNode(QSGNode *node)
{
    //Q_ASSERT_X(!m_children.contains(node), "QSGNode::appendChildNode", "QSGNode is already a child!");
    Q_ASSERT_X(!node->m_parent, "QSGNode::appendChildNode", "QSGNode already has a parent");

#ifndef QT_NO_DEBUG
    if (node->type() == QSGNode::GeometryNodeType) {
        QSGGeometryNode *g = static_cast<QSGGeometryNode *>(node);
        Q_ASSERT_X(g->material(), "QSGNode::appendChildNode", "QSGGeometryNode is missing material");
        Q_ASSERT_X(g->geometry(), "QSGNode::appendChildNode", "QSGGeometryNode is missing geometry");
    }
#endif

    if (m_lastChild)
        m_lastChild->m_nextSibling = node;
    else
        m_firstChild = node;
    node->m_previousSibling = m_lastChild;
    m_lastChild = node;
    node->m_parent = this;

    node->markDirty(DirtyNodeAdded);
}

TimelineRenderPass::State *TimelineSelectionRenderPass::update(
        const TimelineAbstractRenderer *renderer, const TimelineRenderState *parentState,
        State *oldState, int firstIndex, int lastIndex, bool stateChanged, qreal spacing) const
{
    Q_UNUSED(stateChanged);

    const TimelineModel *model = renderer->model();
    if (!model || model->isEmpty())
        return oldState;

    TimelineSelectionRenderPassState *state;

    if (oldState == 0)
        state = new TimelineSelectionRenderPassState;
    else
        state = static_cast<TimelineSelectionRenderPassState *>(oldState);

    int selectedItem = renderer->selectedItem();
    QSGGeometryNode *node = static_cast<QSGGeometryNode *>(model->expanded() ?
                                                               state->expandedOverlay() :
                                                               state->collapsedOverlay());

    if (selectedItem != -1 && selectedItem >= firstIndex && selectedItem < lastIndex) {
        qreal top = 0;
        qreal height = 0;
        if (model->expanded()) {
            int row = model->expandedRow(selectedItem);
            int rowHeight = model->expandedRowHeight(row);
            height = rowHeight * model->relativeHeight(selectedItem);
            top = (model->expandedRowOffset(row) + rowHeight) - height;
        } else {
            int row = model->collapsedRow(selectedItem);
            height = TimelineModel::defaultRowHeight() * model->relativeHeight(selectedItem);
            top = TimelineModel::defaultRowHeight() * (row + 1) - height;
        }

        qint64 startTime = qBound(parentState->start(), model->startTime(selectedItem),
                                  parentState->end());
        qint64 endTime = qBound(parentState->start(), model->endTime(selectedItem),
                                parentState->end());
        qint64 left = startTime - parentState->start();
        qint64 width = endTime - startTime;

        // Construct from upper left and lower right for better precision. When constructing from
        // left and width the error on the left border is inherited by the right border. Like this
        // they're independent.

        QRectF position(left * parentState->scale(), top, width * parentState->scale(),  height);

        QColor itemColor = model->color(selectedItem);
        uchar red = itemColor.red();
        uchar green = itemColor.green();
        uchar blue = itemColor.blue();
        int selectionId = model->selectionId(selectedItem);

        OpaqueColoredPoint2DWithSize *v = OpaqueColoredPoint2DWithSize::fromVertexData(
                    node->geometry());
        v[0].set(position.left(), position.bottom(), -position.width(), -position.height(),
                 selectionId, red, green, blue);
        v[1].set(position.right(), position.bottom(), position.width(), -position.height(),
                 selectionId, red, green, blue);
        v[2].set(position.left(), position.top(), -position.width(), position.height(),
                 selectionId, red, green, blue);
        v[3].set(position.right(), position.top(), position.width(), position.height(),
                 selectionId, red, green, blue);
        state->material()->setSelectionColor(renderer->selectionLocked() ? QColor(96,0,255) :
                                                                           Qt::blue);
        state->material()->setSelectedItem(selectionId);
        state->material()->setScale(QVector2D(spacing / parentState->scale(), 1));
        node->markDirty(QSGNode::DirtyMaterial | QSGNode::DirtyGeometry);
    } else {
        OpaqueColoredPoint2DWithSize *v = OpaqueColoredPoint2DWithSize::fromVertexData(
                    node->geometry());
        for (int i = 0; i < 4; ++i)
            v[i].set(0, 0, 0, 0, 0, 0, 0, 0);
        node->markDirty(QSGNode::DirtyGeometry);
    }
    return state;
}

QSGNode *GraphConnection::updatePaintNode(QSGNode *oldNode, UpdatePaintNodeData *)
{
    if (m_source == m_sink)
        return oldNode;

    QSGGeometryNode *node = 0;
    QSGGeometry *geometry = 0;

    QPointF p1, p2, p3, p4;

    p1.setX(m_source.x());
    p1.setY(m_source.y());
    p4.setX(m_sink.x());
    p4.setY(m_sink.y());

    p2.setX(p1.x());
    p3.setX(p4.x());
    if (p1.y() < p4.y()) {
        p2.setY(p1.y() * 0.75 + p4.y() * 0.25);
        p3.setY(p4.y() * 0.75 + p1.y() * 0.25);
    } else {
        p2.setY(p1.y() - (p4.y()-p1.y())*0.25);
        p3.setY(p4.y() + (p4.y()-p1.y())*0.25);
    }

    // quick 'n' dirty estimation of bezier length
    // http://steve.hollasch.net/cgindex/curves/cbezarclen.html
    qreal l1 = (QVector2D(p2)-QVector2D(p1)).length() +
               (QVector2D(p3)-QVector2D(p2)).length() +
               (QVector2D(p4)-QVector2D(p3)).length();
    qreal l0 = (QVector2D(p4)-QVector2D(p1)).length();
    qreal length = 0.5*l0 + 0.5*l1;

    int segmentCount = length;

    if (!oldNode) {
        node = new QSGGeometryNode;
        geometry = new QSGGeometry(QSGGeometry::defaultAttributes_Point2D(), segmentCount);
        geometry->setLineWidth(2);
        geometry->setDrawingMode(GL_LINE_STRIP);
        node->setGeometry(geometry);
        node->setFlag(QSGNode::OwnsGeometry);
        QSGFlatColorMaterial *material = new QSGFlatColorMaterial;
        material->setColor(QColor(0, 0, 0));
        node->setMaterial(material);
        node->setFlag(QSGNode::OwnsMaterial);
    } else {
        node = static_cast<QSGGeometryNode *>(oldNode);
        geometry = node->geometry();
        geometry->allocate(segmentCount);
    }

    QRectF bounds = boundingRect();
    QSGGeometry::Point2D *vertices = geometry->vertexDataAsPoint2D();
    for (int i = 0; i < segmentCount; ++i) {
        qreal t = i / qreal(segmentCount - 1);
        qreal invt = 1 - t;

        // Bezier
        QPointF pos = invt * invt * invt * p1
                    + 3 * invt * invt * t * p2
                    + 3 * invt * t * t * p3
                    + t * t * t * p4;

        float x = pos.x();
        float y = pos.y();

        vertices[i].set(x, y);
    }

    return node;
}

//.........这里部分代码省略.........
    int count = list.size();
    int currentRenderOrder = 0x80000000;
    m_current_projection_matrix.setColumn(2, scale * projectionMatrix().column(2));

    //int clipChangeCount = 0;
    //int programChangeCount = 0;
    //int materialChangeCount = 0;

    for (int i = 0; i < count; ++i) {
        QSGGeometryNode *geomNode = list.at(i);

        QSGMaterialShader::RenderState::DirtyStates updates;

#if defined (QML_RUNTIME_TESTING)
        static bool dumpTree = qApp->arguments().contains(QLatin1String("--dump-tree"));
        if (dumpTree)
            qDebug() << geomNode;
#endif

        bool changeMatrix = m_currentMatrix != geomNode->matrix();

        if (changeMatrix) {
            m_currentMatrix = geomNode->matrix();
            if (m_currentMatrix)
                m_current_model_view_matrix = *m_currentMatrix;
            else
                m_current_model_view_matrix.setToIdentity();
            updates |= QSGMaterialShader::RenderState::DirtyMatrix;
        }

        bool changeOpacity = m_current_opacity != geomNode->inheritedOpacity();
        if (changeOpacity) {
            updates |= QSGMaterialShader::RenderState::DirtyOpacity;
            m_current_opacity = geomNode->inheritedOpacity();
        }

        Q_ASSERT(geomNode->activeMaterial());

        QSGMaterial *material = geomNode->activeMaterial();
        QSGMaterialShader *program = m_context->prepareMaterial(material);
        Q_ASSERT(program->program()->isLinked());

        bool changeClip = geomNode->clipList() != m_currentClip;
        QSGRenderer::ClipType clipType = QSGRenderer::NoClip;
        if (changeClip) {
            clipType = updateStencilClip(geomNode->clipList());
            m_currentClip = geomNode->clipList();
#ifdef FORCE_NO_REORDER
            glDepthMask(false);
#else
            glDepthMask((material->flags() & QSGMaterial::Blending) == 0 && m_current_opacity == 1);
#endif
            //++clipChangeCount;
        }

        bool changeProgram = (changeClip && clipType == QSGRenderer::StencilClip) || m_currentProgram != program;
        if (changeProgram) {
            if (m_currentProgram)
                m_currentProgram->deactivate();
            m_currentProgram = program;
            m_currentProgram->activate();
            //++programChangeCount;
            updates |= (QSGMaterialShader::RenderState::DirtyMatrix | QSGMaterialShader::RenderState::DirtyOpacity);

#ifdef RENDERER_DEBUG
            materialChanges++;
#endif
        }

        bool changeRenderOrder = currentRenderOrder != geomNode->renderOrder();
        if (changeRenderOrder) {
            currentRenderOrder = geomNode->renderOrder();
            m_current_projection_matrix.setColumn(3, projectionMatrix().column(3)
                                                  + currentRenderOrder
                                                  * m_current_projection_matrix.column(2));
            updates |= QSGMaterialShader::RenderState::DirtyMatrix;
        }

        if (changeProgram || m_currentMaterial != material) {
            program->updateState(state(updates), material, changeProgram ? 0 : m_currentMaterial);
            m_currentMaterial = material;
            //++materialChangeCount;
        }

        //glDepthRange((geomNode->renderOrder() + 0.1) * scale, (geomNode->renderOrder() + 0.9) * scale);

        const QSGGeometry *g = geomNode->geometry();
        bindGeometry(program, g);
        draw(geomNode);

#ifdef RENDERER_DEBUG
        geometryNodesDrawn++;
#endif
    }
    //qDebug("Clip: %i, shader program: %i, material: %i times changed while drawing %s items",
    //    clipChangeCount, programChangeCount, materialChangeCount,
    //    &list == &m_transparentNodes ? "transparent" : "opaque");
}

QT_END_NAMESPACE

QSGNode* MDeclarativeStatusBar::updatePaintNode(QSGNode* oldNode, UpdatePaintNodeData*)
{
    QSGGeometryNode* node = static_cast<QSGGeometryNode*>(oldNode);
    if (!node) {
        node = new QSGGeometryNode;
        node->setFlags(QSGNode::OwnsGeometry | QSGNode::OwnsMaterial | QSGNode::OwnsOpaqueMaterial);
        node->setGeometry(new QSGGeometry(QSGGeometry::defaultAttributes_TexturedPoint2D(), 4));
    }

    if (!sharedPixmapHandle) {
        node->setMaterial(new QSGFlatColorMaterial);
        node->setOpaqueMaterial(new QSGFlatColorMaterial);
        node->markDirty(QSGNode::DirtyMaterial);
        return node;
    }

    if (!sharedTexture || updateSharedTexture) {
        node->setMaterial(new QSGTextureMaterial);
        node->setOpaqueMaterial(new QSGTextureMaterial);

#if defined(HAVE_XLIB)
        MDeclarativeScreen* screen = MDeclarativeScreen::instance();

#if defined(QT_OPENGL_ES_2)
        static PFNGLEGLIMAGETARGETTEXTURE2DOESPROC glEGLImageTargetTexture2DOES = (PFNGLEGLIMAGETARGETTEXTURE2DOESPROC)eglGetProcAddress("glEGLImageTargetTexture2DOES");
        static PFNEGLCREATEIMAGEKHRPROC eglCreateImageKHR = (PFNEGLCREATEIMAGEKHRPROC) eglGetProcAddress("eglCreateImageKHR");
        static PFNEGLDESTROYIMAGEKHRPROC eglDestroyImageKHR = (PFNEGLDESTROYIMAGEKHRPROC) eglGetProcAddress("eglDestroyImageKHR");
        static PFNEGLQUERYIMAGENOKPROC eglQueryImageNOK = (PFNEGLQUERYIMAGENOKPROC) eglGetProcAddress("eglQueryImageNOK");

        const EGLint attribs[] = { EGL_IMAGE_PRESERVED_KHR, EGL_TRUE, EGL_NONE };

        EGLDisplay eglDpy = eglGetDisplay((EGLNativeDisplayType)screen->display());
        EGLImageKHR img = eglCreateImageKHR(eglDpy, EGL_NO_CONTEXT, EGL_NATIVE_PIXMAP_KHR, (EGLClientBuffer)sharedPixmapHandle, attribs);

        GLuint textureId;
        glGenTextures(1, &textureId);
        glBindTexture(GL_TEXTURE_2D, textureId);
        glEGLImageTargetTexture2DOES(GL_TEXTURE_2D, (GLeglImageOES)img);

        GLint width = 0;
        GLint height = 0;
        eglQueryImageNOK(eglDpy, img, EGL_WIDTH, &width);
        eglQueryImageNOK(eglDpy, img, EGL_HEIGHT, &height);

        sharedTexture.reset(canvas()->createTextureFromId(textureId, QSize(width, height), QQuickCanvas::TextureOwnsGLTexture));

        eglDestroyImageKHR(eglDpy, img);
#else
        Display* dpy = screen->display();
        Window dummy1;
        int x, y;
        unsigned int width, height, borderwidth, depth;
        XGetGeometry(dpy, sharedPixmapHandle, &dummy1, &x, &y, &width, &height, &borderwidth, &depth);
        XImage* xi = XGetImage(dpy, sharedPixmapHandle, 0, 0, width, height, ULONG_MAX, ZPixmap);
        QImage img = MX11Wrapper::qimageFromXImage(xi);
        XDestroyImage(xi);
        sharedTexture.reset(canvas()->createTextureFromImage(img));
#endif
#endif // HAVE_XLIB

        static_cast<QSGTextureMaterial*>(node->material())->setTexture(sharedTexture.data());
        static_cast<QSGOpaqueTextureMaterial*>(node->opaqueMaterial())->setTexture(sharedTexture.data());
        node->markDirty(QSGNode::DirtyMaterial);
        updateSharedTexture = false;
    }

    QRectF sourceRect;
    sourceRect = QRectF(0, 0, width(), height());
    if (mOrientation == MDeclarativeScreen::Portrait || mOrientation == MDeclarativeScreen::PortraitInverted)
        sourceRect.moveTop(height());
    sourceRect = sharedTexture.data()->convertToNormalizedSourceRect(sourceRect);

    QRect targetRect(x(), y(), width(), height());

    QSGGeometry::updateTexturedRectGeometry(node->geometry(), targetRect, sourceRect);
    node->markDirty(QSGNode::DirtyGeometry);

    return node;
}