renderviewjobutils_p.h

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// Copyright (C) 2014 Klaralvdalens Datakonsult AB (KDAB).

// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only

#ifndef QT3DRENDER_RENDER_RENDERVIEWJOBUTILS_P_H

#define QT3DRENDER_RENDER_RENDERVIEWJOBUTILS_P_H

//

//  W A R N I N G

//  -------------

//

// This file is not part of the Qt API.  It exists for the convenience

// of other Qt classes.  This header file may change from version to

// version without notice, or even be removed.

//

// We mean it.

//

#include <Qt3DRender/qt3drender_global.h>

#include <Qt3DRender/private/qt3drender_global_p.h>

#include <Qt3DCore/qnodeid.h>

#include <QtCore/qhash.h>

#include <QtCore/qvariant.h>

#include <Qt3DRender/private/uniform_p.h>

#include <Qt3DRender/private/handle_types_p.h>

#include <Qt3DRender/private/shaderdata_p.h>

QT_BEGIN_NAMESPACE

namespace Qt3DRender {

namespace Render {

class FrameGraphNode;

class ParameterManager;

class Effect;

class Entity;

class Material;

class RenderPass;

class Technique;

class TechniqueFilter;

class RenderPassFilter;

class NodeManagers;

class ShaderDataManager;

class TextureManager;

class RenderStateManager;

class RenderStateCollection;

class RenderStateSet;

Q_3DRENDERSHARED_PRIVATE_EXPORT Technique *findTechniqueForEffect(NodeManagers *manager,

                                                                  const TechniqueFilter *techniqueFilter,

                                                                  Effect *effect);

typedef QVarLengthArray<RenderPass*, 4> RenderPassList;

Q_3DRENDERSHARED_PRIVATE_EXPORT RenderPassList findRenderPassesForTechnique(NodeManagers *manager,

                                                                            const RenderPassFilter *passFilter,

                                                                            Technique *technique);

// Extracts the type T from a QVariant v without using QVariant::value which is slow

// Note: Assumes you are 100% sure about the type you requested

template<typename T>

inline T variant_value(const QVariant &v)

    return *reinterpret_cast<const T *>(v.data());

struct ParameterInfo

    explicit ParameterInfo(const int nameId = -1, const HParameter &handle = HParameter());

    int nameId;

    HParameter handle;

    bool operator<(const int otherNameId) const noexcept;

    bool operator<(const ParameterInfo &other) const noexcept;

};

using ParameterInfoList = QList<ParameterInfo>;

struct RenderPassParameterData

    RenderPass *pass;

    ParameterInfoList parameterInfo;

};

QT3D_DECLARE_TYPEINFO_2(Qt3DRender, Render, RenderPassParameterData, Q_RELOCATABLE_TYPE)

using MaterialParameterGathererData = QMultiHash<Qt3DCore::QNodeId, std::vector<RenderPassParameterData>>;

Q_3DRENDERSHARED_PRIVATE_EXPORT void parametersFromMaterialEffectTechnique(ParameterInfoList *infoList,

                                             ParameterManager *manager,

                                             Material *material,

                                             Effect *effect,

                                             Technique *technique);

Q_3DRENDERSHARED_PRIVATE_EXPORT void addParametersForIds(ParameterInfoList *params, ParameterManager *manager,

                                                         const QList<Qt3DCore::QNodeId> &parameterIds);

template<class T>

void parametersFromParametersProvider(ParameterInfoList *infoList,

                                      ParameterManager *manager,

                                      T *provider)

    addParametersForIds(infoList, manager, provider->parameters());

Q_3DRENDERSHARED_PRIVATE_EXPORT ParameterInfoList::const_iterator findParamInfo(ParameterInfoList *infoList,

                                                                                const int nameId);

Q_3DRENDERSHARED_PRIVATE_EXPORT void addStatesToRenderStateSet(RenderStateSet *stateSet,

                                                               const QList<Qt3DCore::QNodeId> stateIds,

                                                               RenderStateManager *manager);

Q_3DRENDERSHARED_PRIVATE_EXPORT int findIdealNumberOfWorkers(int elementCount, int packetSize = 100, int maxJobCount = 1)

Q_3DRENDERSHARED_PRIVATE_EXPORT std::vector<Entity *> entitiesInSubset(const std::vector<Entity *> &entities,

const std::vector<Entity *> &subset);

} // namespace Render

} // namespace Qt3DRender

QT_END_NAMESPACE

#endif // QT3DRENDER_RENDER_OPENGL_RENDERVIEWJOBUTILS_P_H