1/****************************************************************************
2**
3** Copyright (C) 2016 The Qt Company Ltd.
4** Contact: https://www.qt.io/licensing/
5**
6** This file is part of the QtQuick module of the Qt Toolkit.
7**
8** $QT_BEGIN_LICENSE:LGPL$
9** Commercial License Usage
10** Licensees holding valid commercial Qt licenses may use this file in
11** accordance with the commercial license agreement provided with the
12** Software or, alternatively, in accordance with the terms contained in
13** a written agreement between you and The Qt Company. For licensing terms
14** and conditions see https://www.qt.io/terms-conditions. For further
15** information use the contact form at https://www.qt.io/contact-us.
16**
17** GNU Lesser General Public License Usage
18** Alternatively, this file may be used under the terms of the GNU Lesser
19** General Public License version 3 as published by the Free Software
20** Foundation and appearing in the file LICENSE.LGPL3 included in the
21** packaging of this file. Please review the following information to
22** ensure the GNU Lesser General Public License version 3 requirements
23** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
24**
25** GNU General Public License Usage
26** Alternatively, this file may be used under the terms of the GNU
27** General Public License version 2.0 or (at your option) the GNU General
28** Public license version 3 or any later version approved by the KDE Free
29** Qt Foundation. The licenses are as published by the Free Software
30** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
31** included in the packaging of this file. Please review the following
32** information to ensure the GNU General Public License requirements will
33** be met: https://www.gnu.org/licenses/gpl-2.0.html and
34** https://www.gnu.org/licenses/gpl-3.0.html.
35**
36** $QT_END_LICENSE$
37**
38****************************************************************************/
39
40#ifndef QQUICKOPENGLSHADEREFFECTNODE_P_H
41#define QQUICKOPENGLSHADEREFFECTNODE_P_H
42
43//
44// W A R N I N G
45// -------------
46//
47// This file is not part of the Qt API. It exists purely as an
48// implementation detail. This header file may change from version to
49// version without notice, or even be removed.
50//
51// We mean it.
52//
53
54#include <private/qtquickglobal_p.h>
55
56QT_REQUIRE_CONFIG(quick_shadereffect);
57
58#include <QtQuick/qsgnode.h>
59#include <QtQuick/qsgmaterial.h>
60#include <QtQuick/qsgtextureprovider.h>
61#include <QtQuick/qquickitem.h>
62#include <private/qtquickglobal_p.h>
63#include <private/qquickshadereffect_p.h>
64
65#include <QtCore/qsharedpointer.h>
66#include <QtCore/qpointer.h>
67
68QT_BEGIN_NAMESPACE
69
70struct QQuickOpenGLShaderEffectMaterialKey {
71 enum ShaderType
72 {
73 VertexShader,
74 FragmentShader,
75 ShaderTypeCount
76 };
77
78 QByteArray sourceCode[ShaderTypeCount];
79
80 bool operator == (const QQuickOpenGLShaderEffectMaterialKey &other) const;
81 bool operator != (const QQuickOpenGLShaderEffectMaterialKey &other) const;
82};
83
84uint qHash(const QQuickOpenGLShaderEffectMaterialKey &key);
85
86class QQuickCustomMaterialShader;
87class QQuickOpenGLShaderEffectNode;
88class Q_QUICK_PRIVATE_EXPORT QQuickOpenGLShaderEffectMaterial : public QSGMaterial
89{
90public:
91 struct UniformData
92 {
93 enum SpecialType { None, Sampler, SamplerExternal, SubRect, Opacity, Matrix };
94
95 QByteArray name;
96 QVariant value;
97 int propertyIndex = -1;
98 SpecialType specialType;
99
100 bool operator == (const UniformData &other) const;
101
102 void setValueFromProperty(QObject *item, const QMetaObject *itemMetaObject)
103 {
104 if (propertyIndex == -1) {
105 value = item->property(name);
106 } else {
107 value = itemMetaObject->property(index: propertyIndex).read(obj: item);
108 }
109 }
110 };
111
112 explicit QQuickOpenGLShaderEffectMaterial(QQuickOpenGLShaderEffectNode *node = nullptr);
113 QSGMaterialType *type() const override;
114 QSGMaterialShader *createShader() const override;
115 int compare(const QSGMaterial *other) const override;
116
117 QVector<QByteArray> attributes;
118 QVector<UniformData> uniforms[QQuickOpenGLShaderEffectMaterialKey::ShaderTypeCount];
119 QVector<QSGTextureProvider *> textureProviders;
120 QQuickShaderEffect::CullMode cullMode;
121 bool geometryUsesTextureSubRect;
122
123 void setProgramSource(const QQuickOpenGLShaderEffectMaterialKey &source);
124 void updateTextures() const;
125 void invalidateTextureProvider(const QObject *provider);
126
127 static void cleanupMaterialCache();
128
129protected:
130 friend class QQuickCustomMaterialShader;
131
132 // Each material needs a unique type to ensure that the renderer has a one
133 // and exactly one GL program for every unique set of shader sources.
134 // setProgramSource() stores the sources in a cache along with the right
135 // type. The type is cleaned up in cleanupMaterialCache() which is called
136 // when the GL context is shut down.
137 QSGMaterialType *m_type;
138 QQuickOpenGLShaderEffectMaterialKey m_source;
139
140 QQuickOpenGLShaderEffectNode *m_node;
141 bool m_emittedLogChanged;
142};
143
144
145class QSGShaderEffectMesh;
146
147class Q_QUICK_PRIVATE_EXPORT QQuickOpenGLShaderEffectNode : public QObject, public QSGGeometryNode
148{
149 Q_OBJECT
150public:
151 QQuickOpenGLShaderEffectNode();
152 ~QQuickOpenGLShaderEffectNode() override;
153
154 void preprocess() override;
155
156Q_SIGNALS:
157 void logAndStatusChanged(const QString &, int status);
158 void dirtyTexture();
159
160private Q_SLOTS:
161 void markDirtyTexture();
162 void textureProviderDestroyed(QObject *object);
163};
164
165QT_END_NAMESPACE
166
167#endif // QQUICKOPENGLSHADEREFFECTNODE_P_H
168

source code of qtdeclarative/src/quick/items/qquickopenglshadereffectnode_p.h