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/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the QtQuick module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** 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.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 3 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL3 included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 3 requirements
** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 2.0 or (at your option) the GNU General
** Public license version 3 or any later version approved by the KDE Free
** Qt Foundation. The licenses are as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-2.0.html and
** https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#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;
// Each material needs a unique type to ensure that the renderer has a one
// and exactly one GL program for every unique set of shader sources.
// setProgramSource() stores the sources in a cache along with the right
// type. The type is cleaned up in cleanupMaterialCache() which is called
// when the GL context is shut down.
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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