public:
QQuickFramebufferObjectPrivate()
: followsItemSize(true)
+ , node(0)
{
}
bool followsItemSize;
+ mutable QSGFramebufferObjectNode *node;
};
/*!
* to \c false and return a texture of your choosing from
* QQuickFramebufferObject::Renderer::createFramebufferObject().
*
+ * Starting Qt 5.4, the QQuickFramebufferObject class is a
+ * \l{QSGTextureProvider}{texture provider}
+ * and can be used directly in \l {ShaderEffect}{ShaderEffects} and other
+ * classes that consume texture providers.
+ *
* \sa {Scene Graph - Rendering FBOs}, {Scene Graph and Rendering}
*/
QQuickItem(*new QQuickFramebufferObjectPrivate, parent)
{
setFlag(ItemHasContents);
+ connect(this, SIGNAL(sceneGraphInvalidated()), this, SLOT(invalidateSG()));
}
/*!
update();
}
-class QSGFramebufferObjectNode : public QObject, public QSGSimpleTextureNode
+class QSGFramebufferObjectNode : public QSGTextureProvider, public QSGSimpleTextureNode
{
Q_OBJECT
, renderPending(true)
, invalidatePending(false)
{
-
+ qsgnode_set_description(this, QStringLiteral("fbonode"));
}
~QSGFramebufferObjectNode()
window->update();
}
+ QSGTexture *texture() const Q_DECL_OVERRIDE
+ {
+ return QSGSimpleTextureNode::texture();
+ }
+
public Q_SLOTS:
void render()
{
QOpenGLFramebufferObject::blitFramebuffer(msDisplayFbo, fbo);
markDirty(QSGNode::DirtyMaterial);
+ emit textureChanged();
}
}
Q_D(QQuickFramebufferObject);
if (!n) {
- n = new QSGFramebufferObjectNode;
- n->window = window();
+ if (!d->node)
+ d->node = new QSGFramebufferObjectNode;
+ n = d->node;
}
if (!n->renderer) {
+ n->window = window();
n->renderer = createRenderer();
n->renderer->data = n;
connect(window(), SIGNAL(beforeRendering()), n, SLOT(render()));
return n;
}
+bool QQuickFramebufferObject::isTextureProvider() const
+{
+ return true;
+}
+
+QSGTextureProvider *QQuickFramebufferObject::textureProvider() const
+{
+ Q_D(const QQuickFramebufferObject);
+ QQuickWindow *w = window();
+ if (!w || !w->openglContext() || QThread::currentThread() != w->openglContext()->thread()) {
+ qWarning("QQuickFramebufferObject::textureProvider: can only be queried on the rendering thread of an exposed window");
+ return 0;
+ }
+ if (!d->node)
+ d->node = new QSGFramebufferObjectNode;
+ return d->node;
+}
+
+void QQuickFramebufferObject::releaseResources()
+{
+ // When release resources is called on the GUI thread, we only need to
+ // forget about the node. Since it is the node we returned from updatePaintNode
+ // it will be managed by the scene graph.
+ Q_D(QQuickFramebufferObject);
+ d->node = 0;
+}
+
+void QQuickFramebufferObject::invalidateSG()
+{
+ Q_D(QQuickFramebufferObject);
+ d->node = 0;
+}
+
/*!
* \class QQuickFramebufferObject::Renderer
* \inmodule QtQuick