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#include "customrenderitem.h"
#include <QQuickWindow>
#include <QSGRendererInterface>

#include "openglrenderer.h"
#ifdef Q_OS_MACOS
#include "metalrenderer.h"
#endif
#if QT_CONFIG(d3d12)
#include "d3d12renderer.h"
#endif
#include "softwarerenderer.h"

//! [1]
CustomRenderItem::CustomRenderItem(QQuickItem *parent)
    : QQuickItem(parent)
{
    // Our item shows something so set the flag.
    setFlag(ItemHasContents);
}
//! [1]

//! [2]
QSGNode *CustomRenderItem::updatePaintNode(QSGNode *node, UpdatePaintNodeData *)
{
    QSGRenderNode *n = static_cast<QSGRenderNode *>(node);

    QSGRendererInterface *ri = window()->rendererInterface();
    if (!ri)
        return nullptr;

    switch (ri->graphicsApi()) {
    case QSGRendererInterface::OpenGL:
        Q_FALLTHROUGH();
    case QSGRendererInterface::OpenGLRhi:
#if QT_CONFIG(opengl)
        if (!n)
            n = new OpenGLRenderNode;
        static_cast<OpenGLRenderNode *>(n)->sync(this);
#endif
        break;

    case QSGRendererInterface::MetalRhi:
// Restore when QTBUG-78580 is done and the .pro is updated accordingly
//#ifdef Q_OS_DARWIN
#ifdef Q_OS_MACOS
        if (!n) {
            MetalRenderNode *metalNode = new MetalRenderNode;
            n = metalNode;
            metalNode->resourceBuilder()->setWindow(window());
            QObject::connect(window(), &QQuickWindow::beforeRendering,
                             metalNode->resourceBuilder(), &MetalRenderNodeResourceBuilder::build);
        }
        static_cast<MetalRenderNode *>(n)->sync(this);
#endif
        break;

    case QSGRendererInterface::Direct3D12: // ### Qt 6: remove
#if QT_CONFIG(d3d12)
        if (!n)
            n = new D3D12RenderNode;
        static_cast<D3D12RenderNode *>(n)->sync(this);
#endif
        break;

    case QSGRendererInterface::Software:
        if (!n)
            n = new SoftwareRenderNode;
        static_cast<SoftwareRenderNode *>(n)->sync(this);
        break;

    default:
        break;
    }

    if (!n)
        qWarning("QSGRendererInterface reports unknown graphics API %d", ri->graphicsApi());

    return n;
}
//! [2]

// This item does not support being moved between windows. If that is desired,
// itemChange() should be reimplemented as well.