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/****************************************************************************
**
** Copyright (C) 2016 Klaralvdalens Datakonsult AB (KDAB).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the Qt3D module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:COMM$
**
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** $QT_END_LICENSE$
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
****************************************************************************/
#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/qmutex.h>
#include <QtCore/qvector.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;
QVector<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, QVector<Qt3DCore::QNodeId>> m_programRefs;
QVector<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
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