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/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the QtQuick module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL21$
** 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 http://www.qt.io/terms-conditions. For further
** information use the contact form at http://www.qt.io/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 or version 3 as published by the Free
** Software Foundation and appearing in the file LICENSE.LGPLv21 and
** LICENSE.LGPLv3 included in the packaging of this file. Please review the
** following information to ensure the GNU Lesser General Public License
** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** As a special exception, The Qt Company gives you certain additional
** rights. These rights are described in The Qt Company LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QQUICKSHADEREFFECTNODE_P_H
#define QQUICKSHADEREFFECTNODE_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 <QtQuick/qsgnode.h>
#include <QtQuick/qsgmaterial.h>
#include <QtQuick/qsgtextureprovider.h>
#include <QtQuick/qquickitem.h>
#include <private/qtquickglobal_p.h>
#include <QtCore/qsharedpointer.h>
#include <QtCore/qpointer.h>
QT_BEGIN_NAMESPACE
struct QQuickShaderEffectMaterialKey {
enum ShaderType
{
VertexShader,
FragmentShader,
ShaderTypeCount
};
QByteArray sourceCode[ShaderTypeCount];
const char *className;
bool operator == (const QQuickShaderEffectMaterialKey &other) const;
bool operator != (const QQuickShaderEffectMaterialKey &other) const;
};
uint qHash(const QQuickShaderEffectMaterialKey &key);
class QQuickCustomMaterialShader;
class QQuickShaderEffectNode;
class Q_QUICK_PRIVATE_EXPORT QQuickShaderEffectMaterial : public QSGMaterial
{
public:
struct UniformData
{
enum SpecialType { None, Sampler, SubRect, Opacity, Matrix };
QByteArray name;
QVariant value;
SpecialType specialType;
bool operator == (const UniformData &other) const;
};
enum CullMode
{
NoCulling,
BackFaceCulling,
FrontFaceCulling
};
explicit QQuickShaderEffectMaterial(QQuickShaderEffectNode *node = 0);
QSGMaterialType *type() const Q_DECL_OVERRIDE;
QSGMaterialShader *createShader() const Q_DECL_OVERRIDE;
int compare(const QSGMaterial *other) const Q_DECL_OVERRIDE;
QVector<QByteArray> attributes;
QVector<UniformData> uniforms[QQuickShaderEffectMaterialKey::ShaderTypeCount];
QVector<QSGTextureProvider *> textureProviders;
CullMode cullMode;
bool geometryUsesTextureSubRect;
void setProgramSource(const QQuickShaderEffectMaterialKey &source);
void updateTextures() const;
void invalidateTextureProvider(QSGTextureProvider *provider);
static void cleanupMaterialCache();
protected:
friend class QQuickCustomMaterialShader;
// The type pointer needs to be unique. It is not safe to let the type object be part of the
// QQuickShaderEffectMaterial, since it can be deleted and a new one constructed on top of the old
// one. The new QQuickShaderEffectMaterial would then get the same type pointer as the old one, and
// CustomMaterialShaders based on the old one would incorrectly be used together with the new
// one. To guarantee that the type pointer is unique, the type object must live as long as
// there are any CustomMaterialShaders of that type.
QSharedPointer<QSGMaterialType> m_type;
QQuickShaderEffectMaterialKey m_source;
QQuickShaderEffectNode *m_node;
bool m_emittedLogChanged;
};
class QSGShaderEffectMesh;
class Q_QUICK_PRIVATE_EXPORT QQuickShaderEffectNode : public QObject, public QSGGeometryNode
{
Q_OBJECT
public:
QQuickShaderEffectNode();
virtual ~QQuickShaderEffectNode();
void preprocess() Q_DECL_OVERRIDE;
Q_SIGNALS:
void logAndStatusChanged(const QString &, int status);
private Q_SLOTS:
void markDirtyTexture();
void textureProviderDestroyed(QObject *object);
};
QT_END_NAMESPACE
#endif // QQUICKSHADEREFFECTNODE_P_H
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