/****************************************************************************
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** Copyright (C) 2017 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
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** This file is part of Qt 3D Studio.
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#ifndef QT3DS_QML_RENDER_H
#define QT3DS_QML_RENDER_H

#include "Qt3DSOffscreenRenderManager.h"
#include "Qt3DSRenderContextCore.h"

class IQt3DS;

using namespace qt3ds::render;

class IQ3DSQmlStreamService;
class IQ3DSQmlStreamRenderer;

class Q3DSQmlRender : public IOffscreenRenderer
{
public:
    Q3DSQmlRender(IQt3DSRenderContext &inRenderContext, const char *asset);
    ~Q3DSQmlRender();

    QT3DS_IMPLEMENT_REF_COUNT_ADDREF_RELEASE_OVERRIDE(m_RenderContext.GetAllocator())

    CRegisteredString GetOffscreenRendererType() override;

    SOffscreenRendererEnvironment GetDesiredEnvironment(QT3DSVec2 inPresentationScaleFactor) override;

    // Returns true of this object needs to be rendered, false if this object is not dirty
    SOffscreenRenderFlags NeedsRender(const SOffscreenRendererEnvironment &inEnvironment,
                                      QT3DSVec2 inPresentationScaleFactor,
                                      const SRenderInstanceId instanceId) override;

    void Render(const SOffscreenRendererEnvironment &inEnvironment,
                NVRenderContext &inRenderContext, QT3DSVec2 inPresentationScaleFactor,
                SScene::RenderClearCommand inColorBufferNeedsClear,
                const SRenderInstanceId instanceId) override;
    void RenderWithClear(const SOffscreenRendererEnvironment &/*inEnvironment*/,
                         NVRenderContext &/*inRenderContext*/,
                         QT3DSVec2 /*inPresentationScaleFactor*/,
                         SScene::RenderClearCommand /*inColorBufferNeedsClear*/,
                         QT3DSVec4 /*inclearColor*/,
                         const SRenderInstanceId /*instanceId*/) override {}

    IGraphObjectPickQuery *GetGraphObjectPickQuery(const SRenderInstanceId instanceId) override
    {
        Q_UNUSED(instanceId)
        return nullptr;
    }
    bool Pick(const QT3DSVec2 &inMouseCoords, const QT3DSVec2 &inViewportDimensions,
              const SRenderInstanceId instanceId) override
    {
        Q_UNUSED(inMouseCoords)
        Q_UNUSED(inViewportDimensions)
        Q_UNUSED(instanceId)
        return false;
    }
    void addCallback(IOffscreenRendererCallback *cb) override
    {
        m_callback = cb;
    }
    static const char *GetRendererName() { return "qml-render"; }
private:

    void initializeRenderer();

    IQt3DSRenderContext &m_RenderContext;
    IQ3DSQmlStreamRenderer *m_qmlStreamRenderer;
    CRegisteredString m_offscreenRenderType;
    CRegisteredString m_assetString;
    IOffscreenRendererCallback *m_callback;
    volatile QT3DSI32 mRefCount;
};

#endif