qt-everywhere-src-5.15.1/qtquick3d/src/runtimerender/resourcemanager/qssgrenderresourcebufferobjects_p.h

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#ifndef QSSG_RENDER_RESOURCE_BUFFER_OBJECTS_H
#define QSSG_RENDER_RESOURCE_BUFFER_OBJECTS_H

//
//  W A R N I N G
//  -------------
//
// This file is not part of the Qt API.  It exists purely as an
// implementation detail.  This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//

#include <QtQuick3DRender/private/qssgrendercontext_p.h>
#include <QtQuick3DRender/private/qssgrenderframebuffer_p.h>
#include <QtQuick3DRender/private/qssgrenderrenderbuffer_p.h>

#include <QtQuick3DRuntimeRender/private/qssgrenderresourcemanager_p.h>

QT_BEGIN_NAMESPACE
class QSSGResourceFrameBuffer
{
protected:
    QSSGRef<QSSGResourceManager> m_resourceManager;
    QSSGRef<QSSGRenderFrameBuffer> m_frameBuffer;

public:
    QSSGResourceFrameBuffer(const QSSGRef<QSSGResourceManager> &mgr);
    ~QSSGResourceFrameBuffer();
    bool ensureFrameBuffer();
    void releaseFrameBuffer();

    const QSSGRef<QSSGResourceManager> &getResourceManager() { return m_resourceManager; }
    const QSSGRef<QSSGRenderFrameBuffer> &getFrameBuffer() { return m_frameBuffer; }
    operator const QSSGRef<QSSGRenderFrameBuffer> &() { return m_frameBuffer; }
    const QSSGRef<QSSGRenderFrameBuffer> &operator->()
    {
        Q_ASSERT(m_frameBuffer);
        return m_frameBuffer;
    }
    QSSGRenderFrameBuffer &operator*()
    {
        Q_ASSERT(m_frameBuffer);
        return *m_frameBuffer;
    }
};

class QSSGResourceRenderBuffer
{
protected:
    QSSGRef<QSSGResourceManager> m_resourceManager;
    QSSGRef<QSSGRenderRenderBuffer> m_renderBuffer;
    QSSGRenderRenderBufferFormat m_storageFormat;
    QSize m_dimensions;

public:
    QSSGResourceRenderBuffer(const QSSGRef<QSSGResourceManager> &mgr);
    ~QSSGResourceRenderBuffer();
    bool ensureRenderBuffer(qint32 width, qint32 height, QSSGRenderRenderBufferFormat storageFormat);
    void releaseRenderBuffer();

    operator const QSSGRef<QSSGRenderRenderBuffer> &() { return m_renderBuffer; }
    const QSSGRef<QSSGRenderRenderBuffer> &operator->()
    {
        Q_ASSERT(m_renderBuffer);
        return m_renderBuffer;
    }
    QSSGRenderRenderBuffer &operator*()
    {
        Q_ASSERT(m_renderBuffer);
        return *m_renderBuffer;
    }
};
QT_END_NAMESPACE
#endif