qt-everywhere-src-5.15.1/qt3d/src/quick3d/quick3drender/items/quick3drendertargetoutput.cpp

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#include <Qt3DQuickRender/private/quick3drendertargetoutput_p.h>

QT_BEGIN_NAMESPACE

namespace Qt3DRender {
namespace Render {
namespace Quick {

Quick3DRenderTargetOutput::Quick3DRenderTargetOutput(QObject * parent)
    : QObject(parent)
{
}

QQmlListProperty<QRenderTargetOutput> Quick3DRenderTargetOutput::qmlAttachments()
{
    return QQmlListProperty<QRenderTargetOutput>(this, 0,
                                               &Quick3DRenderTargetOutput::appendRenderAttachment,
                                               &Quick3DRenderTargetOutput::renderAttachmentCount,
                                               &Quick3DRenderTargetOutput::renderAttachmentAt,
                                               &Quick3DRenderTargetOutput::clearRenderAttachments);
}

void Quick3DRenderTargetOutput::appendRenderAttachment(QQmlListProperty<QRenderTargetOutput> *list, QRenderTargetOutput *output)
{
    Quick3DRenderTargetOutput *rT = qobject_cast<Quick3DRenderTargetOutput *>(list->object);
    if (rT)
        rT->parentRenderTarget()->addOutput(output);
}

QRenderTargetOutput *Quick3DRenderTargetOutput::renderAttachmentAt(QQmlListProperty<QRenderTargetOutput> *list, int index)
{
    Quick3DRenderTargetOutput *rT = qobject_cast<Quick3DRenderTargetOutput *>(list->object);
    if (rT)
        return rT->parentRenderTarget()->outputs().at(index);
    return nullptr;
}

int Quick3DRenderTargetOutput::renderAttachmentCount(QQmlListProperty<QRenderTargetOutput> *list)
{
    Quick3DRenderTargetOutput *rT = qobject_cast<Quick3DRenderTargetOutput *>(list->object);
    if (rT)
        return rT->parentRenderTarget()->outputs().count();
    return -1;
}

void Quick3DRenderTargetOutput::clearRenderAttachments(QQmlListProperty<QRenderTargetOutput> *list)
{
    Quick3DRenderTargetOutput *rT = qobject_cast<Quick3DRenderTargetOutput *>(list->object);
    if (rT) {
        const auto outputs = rT->parentRenderTarget()->outputs();
        for (QRenderTargetOutput *output : outputs)
            rT->parentRenderTarget()->removeOutput(output);
    }
}

} // namespace Quick
} // namespace Render
} // namespace Qt3DRender

QT_END_NAMESPACE