/*!
\fn QImage QGLFramebufferObject::toImage() const
Returns the contents of this framebuffer object as a QImage.
*/
QImage QGLFramebufferObject::toImage() const
{
Q_D(const QGLFramebufferObject);
if (!d->valid)
return QImage();
// qt_gl_read_framebuffer doesn't work on a multisample FBO
if (format().samples() != 0) {
QGLFramebufferObject temp(size(), QGLFramebufferObjectFormat());
QRect rect(QPoint(0, 0), size());
blitFramebuffer(&temp, rect, const_cast<QGLFramebufferObject *>(this), rect);
return temp.toImage();
}
bool wasBound = isBound();
if (!wasBound)
const_cast<QGLFramebufferObject *>(this)->bind();
QImage image = qt_gl_read_framebuffer(d->size, format().internalTextureFormat() != GL_RGB, true);
if (!wasBound)
const_cast<QGLFramebufferObject *>(this)->release();
return image;
}
void checkSourceDestReset()
{
// GIVEN
TestArbiter arbiter;
QScopedPointer<Qt3DRender::QBlitFramebuffer> blitFramebuffer(new Qt3DRender::QBlitFramebuffer());
arbiter.setArbiterOnNode(blitFramebuffer.data());
Qt3DRender::QRenderTarget *sourceRenderTarget = new Qt3DRender::QRenderTarget; // no parent
Qt3DRender::QRenderTarget *destinationRenderTarget = new Qt3DRender::QRenderTarget(sourceRenderTarget); // have a parent
// WHEN
blitFramebuffer->setSource(sourceRenderTarget);
blitFramebuffer->setDestination(destinationRenderTarget);
QCoreApplication::processEvents();
// THEN
QCOMPARE(sourceRenderTarget->parent(), blitFramebuffer.data());
QCOMPARE(destinationRenderTarget->parent(), sourceRenderTarget); // already set parent must not change
// WHEN
delete sourceRenderTarget;
// THEN
QVERIFY(!blitFramebuffer->source());
QVERIFY(!blitFramebuffer->destination()); // gone too since destinationRenderTarget was parented to sourceRenderTarget
}
/*!
\overload
Convenience overload to blit between two framebuffer objects.
*/
void QOpenGLFramebufferObject::blitFramebuffer(QOpenGLFramebufferObject *target,
QOpenGLFramebufferObject *source,
GLbitfield buffers, GLenum filter)
{
if (!target && !source)
return;
QSize targetSize;
QSize sourceSize;
if (target)
targetSize = target->size();
if (source)
sourceSize = source->size();
if (targetSize.isEmpty())
targetSize = sourceSize;
else if (sourceSize.isEmpty())
sourceSize = targetSize;
blitFramebuffer(target, QRect(QPoint(0, 0), targetSize),
source, QRect(QPoint(0, 0), sourceSize),
buffers, filter);
}
void checkPropertyUpdate()
{
// GIVEN
TestArbiter arbiter;
QScopedPointer<Qt3DRender::QBlitFramebuffer> blitFramebuffer(new Qt3DRender::QBlitFramebuffer());
arbiter.setArbiterOnNode(blitFramebuffer.data());
Qt3DRender::QRenderTarget *sourceRenderTarget = new Qt3DRender::QRenderTarget;
Qt3DRender::QRenderTarget *destinationRenderTarget = new Qt3DRender::QRenderTarget;
// sourceRenderTarget
// WHEN
blitFramebuffer->setSource(sourceRenderTarget);
QCoreApplication::processEvents();
// THEN
QCOMPARE(arbiter.events.size(), 1);
Qt3DCore::QPropertyUpdatedChangePtr change = arbiter.events.first().staticCast<Qt3DCore::QPropertyUpdatedChange>();
QCOMPARE(change->propertyName(), "source");
QCOMPARE(change->subjectId(), blitFramebuffer->id());
QCOMPARE(change->value().value<Qt3DCore::QNodeId>(), sourceRenderTarget->id());
QCOMPARE(change->type(), Qt3DCore::PropertyUpdated);
arbiter.events.clear();
// WHEN
blitFramebuffer->setSource(sourceRenderTarget);
QCoreApplication::processEvents();
// THEN
QCOMPARE(arbiter.events.size(), 0);
// WHEN
blitFramebuffer->setSource(nullptr);
QCoreApplication::processEvents();
// THEN
QCOMPARE(arbiter.events.size(), 1);
change = arbiter.events.first().staticCast<Qt3DCore::QPropertyUpdatedChange>();
QCOMPARE(change->propertyName(), "source");
QCOMPARE(change->subjectId(), blitFramebuffer->id());
QCOMPARE(change->value().value<Qt3DCore::QNodeId>(), Qt3DCore::QNodeId());
QCOMPARE(change->type(), Qt3DCore::PropertyUpdated);
arbiter.events.clear();
// destinationRenderTarget
// WHEN
blitFramebuffer->setDestination(destinationRenderTarget);
QCoreApplication::processEvents();
// THEN
QCOMPARE(arbiter.events.size(), 1);
change = arbiter.events.first().staticCast<Qt3DCore::QPropertyUpdatedChange>();
QCOMPARE(change->propertyName(), "destination");
QCOMPARE(change->subjectId(), blitFramebuffer->id());
QCOMPARE(change->value().value<Qt3DCore::QNodeId>(), destinationRenderTarget->id());
QCOMPARE(change->type(), Qt3DCore::PropertyUpdated);
arbiter.events.clear();
// WHEN
blitFramebuffer->setDestination(destinationRenderTarget);
QCoreApplication::processEvents();
// THEN
QCOMPARE(arbiter.events.size(), 0);
// WHEN
blitFramebuffer->setDestination(nullptr);
QCoreApplication::processEvents();
// THEN
QCOMPARE(arbiter.events.size(), 1);
change = arbiter.events.first().staticCast<Qt3DCore::QPropertyUpdatedChange>();
QCOMPARE(change->propertyName(), "destination");
QCOMPARE(change->subjectId(), blitFramebuffer->id());
QCOMPARE(change->value().value<Qt3DCore::QNodeId>(), Qt3DCore::QNodeId());
QCOMPARE(change->type(), Qt3DCore::PropertyUpdated);
arbiter.events.clear();
// sourceRect
// WHEN
blitFramebuffer->setSourceRect(QRect(0,0,1,1));
QCoreApplication::processEvents();
// THEN
QCOMPARE(arbiter.events.size(), 1);
change = arbiter.events.first().staticCast<Qt3DCore::QPropertyUpdatedChange>();
QCOMPARE(change->propertyName(), "sourceRect");
QCOMPARE(change->subjectId(), blitFramebuffer->id());
QCOMPARE(change->value().value<QRect>(), QRect(0,0,1,1)) ;
QCOMPARE(change->type(), Qt3DCore::PropertyUpdated);
arbiter.events.clear();
// WHEN
blitFramebuffer->setSourceRect(QRect(0,0,1,1));
QCoreApplication::processEvents();
// THEN
QCOMPARE(arbiter.events.size(), 0);
// WHEN
blitFramebuffer->setSourceRect(QRect());
QCoreApplication::processEvents();
// THEN
QCOMPARE(arbiter.events.size(), 1);
change = arbiter.events.first().staticCast<Qt3DCore::QPropertyUpdatedChange>();
QCOMPARE(change->propertyName(), "sourceRect");
QCOMPARE(change->subjectId(), blitFramebuffer->id());
QCOMPARE(change->value().value<QRect>(), QRect());
QCOMPARE(change->type(), Qt3DCore::PropertyUpdated);
arbiter.events.clear();
// destinationRect
blitFramebuffer->setDestinationRect(QRect(0,0,1,1));
QCoreApplication::processEvents();
// THEN
QCOMPARE(arbiter.events.size(), 1);
change = arbiter.events.first().staticCast<Qt3DCore::QPropertyUpdatedChange>();
QCOMPARE(change->propertyName(), "destinationRect");
QCOMPARE(change->subjectId(), blitFramebuffer->id());
QCOMPARE(change->value().value<QRect>(), QRect(0,0,1,1)) ;
QCOMPARE(change->type(), Qt3DCore::PropertyUpdated);
arbiter.events.clear();
// WHEN
blitFramebuffer->setDestinationRect(QRect(0,0,1,1));
QCoreApplication::processEvents();
// THEN
QCOMPARE(arbiter.events.size(), 0);
// WHEN
blitFramebuffer->setDestinationRect(QRect());
QCoreApplication::processEvents();
// THEN
QCOMPARE(arbiter.events.size(), 1);
change = arbiter.events.first().staticCast<Qt3DCore::QPropertyUpdatedChange>();
QCOMPARE(change->propertyName(), "destinationRect");
QCOMPARE(change->subjectId(), blitFramebuffer->id());
QCOMPARE(change->value().value<QRect>(), QRect());
QCOMPARE(change->type(), Qt3DCore::PropertyUpdated);
arbiter.events.clear();
// sourceAttachmentPoint
// WHEN
blitFramebuffer->setSourceAttachmentPoint(Qt3DRender::QRenderTargetOutput::Color1);
QCoreApplication::processEvents();
// THEN
QCOMPARE(arbiter.events.size(), 1);
change = arbiter.events.first().staticCast<Qt3DCore::QPropertyUpdatedChange>();
QCOMPARE(change->propertyName(), "sourceAttachmentPoint");
QCOMPARE(change->subjectId(), blitFramebuffer->id());
QCOMPARE(change->value().value<Qt3DRender::QRenderTargetOutput::AttachmentPoint>(), Qt3DRender::QRenderTargetOutput::Color1);
QCOMPARE(change->type(), Qt3DCore::PropertyUpdated);
arbiter.events.clear();
// WHEN
blitFramebuffer->setSourceAttachmentPoint(Qt3DRender::QRenderTargetOutput::Color1);
QCoreApplication::processEvents();
// THEN
QCOMPARE(arbiter.events.size(), 0);
// WHEN
blitFramebuffer->setSourceAttachmentPoint(Qt3DRender::QRenderTargetOutput::Color0);
QCoreApplication::processEvents();
// THEN
QCOMPARE(arbiter.events.size(), 1);
change = arbiter.events.first().staticCast<Qt3DCore::QPropertyUpdatedChange>();
QCOMPARE(change->propertyName(), "sourceAttachmentPoint");
QCOMPARE(change->subjectId(), blitFramebuffer->id());
QCOMPARE(change->value().value<Qt3DRender::QRenderTargetOutput::AttachmentPoint>(), Qt3DRender::QRenderTargetOutput::Color0);
QCOMPARE(change->type(), Qt3DCore::PropertyUpdated);
arbiter.events.clear();
// destinationAttachmentPoint
// WHEN
blitFramebuffer->setDestinationAttachmentPoint(Qt3DRender::QRenderTargetOutput::Color1);
QCoreApplication::processEvents();
// THEN
QCOMPARE(arbiter.events.size(), 1);
change = arbiter.events.first().staticCast<Qt3DCore::QPropertyUpdatedChange>();
QCOMPARE(change->propertyName(), "destinationAttachmentPoint");
QCOMPARE(change->subjectId(), blitFramebuffer->id());
QCOMPARE(change->value().value<Qt3DRender::QRenderTargetOutput::AttachmentPoint>(), Qt3DRender::QRenderTargetOutput::Color1);
QCOMPARE(change->type(), Qt3DCore::PropertyUpdated);
arbiter.events.clear();
// WHEN
blitFramebuffer->setDestinationAttachmentPoint(Qt3DRender::QRenderTargetOutput::Color1);
QCoreApplication::processEvents();
// THEN
QCOMPARE(arbiter.events.size(), 0);
// WHEN
blitFramebuffer->setDestinationAttachmentPoint(Qt3DRender::QRenderTargetOutput::Color0);
QCoreApplication::processEvents();
// THEN
QCOMPARE(arbiter.events.size(), 1);
change = arbiter.events.first().staticCast<Qt3DCore::QPropertyUpdatedChange>();
QCOMPARE(change->propertyName(), "destinationAttachmentPoint");
QCOMPARE(change->subjectId(), blitFramebuffer->id());
QCOMPARE(change->value().value<Qt3DRender::QRenderTargetOutput::AttachmentPoint>(), Qt3DRender::QRenderTargetOutput::Color0);
QCOMPARE(change->type(), Qt3DCore::PropertyUpdated);
arbiter.events.clear();
}