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#ifndef QSGD3D12RENDERER_P_H
#define QSGD3D12RENDERER_P_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 <private/qsgrenderer_p.h>
#include <QtGui/private/qdatabuffer_p.h>
#include <QtCore/qbitarray.h>
#include "qsgd3d12engine_p.h"
#include "qsgd3d12material_p.h"

QT_BEGIN_NAMESPACE

class QSGRenderNode;

class QSGD3D12Renderer : public QSGRenderer
{
public:
    QSGD3D12Renderer(QSGRenderContext *context);
    ~QSGD3D12Renderer();

    void renderScene(GLuint fboId) override;
    void render() override;
    void nodeChanged(QSGNode *node, QSGNode::DirtyState state) override;

    void turnToLayerRenderer() { m_layerRenderer = true; }

private:
    void updateMatrices(QSGNode *node, QSGTransformNode *xform);
    void updateOpacities(QSGNode *node, float inheritedOpacity);
    void buildRenderList(QSGNode *node, QSGClipNode *clip);
    void renderElements();
    void renderElement(int elementIndex);
    void setInputLayout(const QSGGeometry *g, QSGD3D12PipelineState *pipelineState);
    void setupClipping(const QSGClipNode *clip, int elementIndex);
    void setScissor(const QRect &r);
    void renderStencilClip(const QSGClipNode *clip, int elementIndex, const QMatrix4x4 &m, quint32 &stencilValue);
    void renderRenderNode(QSGRenderNode *node, int elementIndex);

    struct Element {
        QSGNode *node = nullptr;
        qint32 vboOffset = -1;
        qint32 iboOffset = -1;
        quint32 iboStride = 0;
        qint32 cboOffset = -1;
        quint32 cboSize = 0;
        bool cboPrepared = false;
    };

    void queueDrawCall(const QSGGeometry *g, const Element &e);

    bool m_layerRenderer = false;
    QSet<QSGNode *> m_dirtyTransformNodes;
    QSet<QSGNode *> m_dirtyOpacityNodes;
    QBitArray m_opaqueElements;
    bool m_rebuild = true;
    bool m_dirtyOpaqueElements = true;
    QDataBuffer<quint8> m_vboData;
    QDataBuffer<quint8> m_iboData;
    QDataBuffer<quint8> m_cboData;
    QDataBuffer<Element> m_renderList;
    uint m_vertexBuf = 0;
    uint m_indexBuf = 0;
    uint m_constantBuf = 0;
    QSGD3D12Engine *m_engine = nullptr;

    QSGMaterialType *m_lastMaterialType = nullptr;
    QSGD3D12PipelineState m_pipelineState;
    QSGD3D12PipelineState m_freshPipelineState;

    typedef QHash<QSGNode *, QSGD3D12MaterialRenderState::DirtyStates> NodeDirtyMap;
    NodeDirtyMap m_nodeDirtyMap;

    QRect m_activeScissorRect;
    QRect m_lastDeviceRect;
    bool m_projectionChangedDueToDeviceSize;

    uint m_renderTarget = 0;
    quint32 m_currentStencilValue;
    enum ClipType {
        ClipScissor = 0x1,
        ClipStencil = 0x2
    };
    int m_currentClipTypes;
};

QT_END_NAMESPACE

#endif // QSGD3D12RENDERER_P_H