qssgrendermotionvectormap_p.h

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// Copyright (C) 2025 The Qt Company Ltd.

// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only

// Qt-Security score:significant reason:default

#ifndef QSSG_RENDER_MOTIONVECTORMAP_H

#define QSSG_RENDER_MOTIONVECTORMAP_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 <QtQuick3DRuntimeRender/private/qtquick3druntimerenderglobal_p.h>

#include <QtGui/QMatrix4x4>

#include <QtGui/QVector3D>

#include <QtCore/QHash>

#include <QtCore/QByteArray>

#include <QtQuick3DUtils/private/qssgrenderbasetypes_p.h>

#include <QtQuick3DRuntimeRender/private/qssgrenderableobjects_p.h>

QT_BEGIN_NAMESPACE

class QSSGRhiContext;

class QSSGRenderContextInterface;

class QRhiRenderBuffer;

class QRhiTextureRenderTarget;

class QRhiRenderPassDescriptor;

class QRhiTexture;

class Q_QUICK3DRUNTIMERENDER_EXPORT QSSGRenderMotionVectorMap

    Q_DISABLE_COPY(QSSGRenderMotionVectorMap)

public:

    struct MotionResultData {

        QMatrix4x4 prevModelViewProjection;

        QMatrix4x4 prevInstanceLocal;

        QMatrix4x4 prevInstanceGlobal;

        QSSGRenderImageTexture prevBoneTexture;

        QSSGRenderImageTexture prevInstanceTexture;

        QSSGRenderImageTexture currentMorphWeightTexture;

        QSSGRenderImageTexture prevMorphWeightTexture;

};

    explicit QSSGRenderMotionVectorMap(const QSSGRenderContextInterface &inContext);

    ~QSSGRenderMotionVectorMap();

    void endFrame();

    MotionResultData trackMotionData(const void *modelKey,

                                     const QMatrix4x4 &currentModelViewProjection,

                                     const QMatrix4x4 &currentInstanceLocal,

                                     const QMatrix4x4 &currentInstanceGlobal,

                                     QSSGRenderTextureData *currentBoneTextureData,

                                     QSSGRenderInstanceTable *currentInstanceTable,

                                     const QVector<float> &currentMorphWeights);

    void releaseCachedResources();

private:

    struct MotionStoreData {

        QMatrix4x4 prevModelViewProjection;

        QMatrix4x4 prevInstanceLocal;

        QMatrix4x4 prevInstanceGlobal;

        std::shared_ptr<QSSGRenderTextureData> prevBoneTextureData;

        std::shared_ptr<QSSGRenderTextureData> prevInstanceTextureData;

        std::shared_ptr<QSSGRenderTextureData> currentMorphWeightTextureData;

        std::shared_ptr<QSSGRenderTextureData> prevMorphWeightTextureData;

        QSize lastPrevBoneTextureDataSize;

        QSize lastPrevInstanceTextureDataSize;

        QSize lastPrevMorphWeightTextureDataSize;

        QSize lastCurrentMorphWeightTextureDataSize;

        int frameAge = 0;

        bool visitedThisFrame = false;

        MotionResultData cachedResult;

};

    const QSSGRenderContextInterface &m_context;

    QHash<const void*, MotionStoreData> m_cache;

    void cleanupStaleEntries();

    void releaseEntryResources(MotionStoreData& entry);

    QSSGRenderImageTexture loadAndReleaseIfNeeded(const std::shared_ptr<QSSGRenderTextureData>& textureData, QSize lastSize);

};

using QSSGRenderMotionVectorMapPtr = std::shared_ptr<QSSGRenderMotionVectorMap>;

QT_END_NAMESPACE

#endif // QSSG_RENDER_MOTIONVECTORMAP_H