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++ // Copyright (C) 2016 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_SHADERCACHE_H
++ #define QT3DRENDER_RENDER_SHADERCACHE_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/private/qt3drender_global_p.h>
++ #include <Qt3DRender/private/shader_p.h>
++
++ #include <QtCore/qhash.h>
++ #include <QtCore/qlist.h>
++ #include <QtCore/qmutex.h>
++
++ QT_BEGIN_NAMESPACE
++
++ class QOpenGLShaderProgram;
++
++ namespace Qt3DRender {
++ namespace Render {
++
++ #if defined(QT_BUILD_INTERNAL)
++ class tst_ShaderCache;
++ #endif
++
++ class Q_3DRENDERSHARED_PRIVATE_EXPORT ShaderCache
++ {
++ public:
++ ~ShaderCache();
++
++ QOpenGLShaderProgram *getShaderProgramAndAddRef(ProgramDNA dna, Qt3DCore::QNodeId shaderPeerId, bool *wasPresent = nullptr);
++ void insert(ProgramDNA dna, Qt3DCore::QNodeId shaderPeerId, QOpenGLShaderProgram *program);
++ void removeRef(ProgramDNA dna, Qt3DCore::QNodeId shaderPeerId);
++ void purge();
++ void clear();
++
++ // Only ever used from the OpenGL submission thread
++ QOpenGLShaderProgram *getShaderProgramForDNA(ProgramDNA dna) const;
++ QList<Qt3DCore::QNodeId> shaderIdsForProgram(ProgramDNA dna) const;
++
++ private:
++ // Only ever used from the OpenGL submission thread
++ QHash<ProgramDNA, QOpenGLShaderProgram *> m_programHash;
++
++ // Accessed from both the OpenGL submission thread and the aspect thread
++ QHash<ProgramDNA, QList<Qt3DCore::QNodeId>> m_programRefs;
++ QList<ProgramDNA> m_pendingRemoval;
++ QMutex m_refsMutex;
++
++ #if defined(QT_BUILD_INTERNAL)
++ friend class tst_ShaderCache;
++ #endif
++ };
++
++ } // namespace Render
++ } // namespace Qt3DRender
++
++ QT_END_NAMESPACE
++
++ #endif // QT3DRENDER_RENDER_SHADERCACHE_H