blob: 5a1021bfab651132585c45c5e72cf9bca8f336ff (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
|
/****************************************************************************
**
** Copyright (C) 2016 Klaralvdalens Datakonsult AB (KDAB).
** Contact: https://www.qt.io/licensing/
**
** This file is part of the Qt3D 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 QT3DEXTRAS_QTEXTUREATLAS_P_P_H
#define QT3DEXTRAS_QTEXTUREATLAS_P_P_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 <QtCore/qscopedpointer.h>
#include <Qt3DRender/private/qabstracttexture_p.h>
#include <Qt3DRender/qtexturegenerator.h>
#include <Qt3DExtras/private/areaallocator_p.h>
#include <Qt3DExtras/private/qtextureatlas_p.h>
QT_BEGIN_NAMESPACE
namespace Qt3DExtras {
// Used to store texture info within atlas
struct AtlasTexture
{
QRect position;
int padding = 0;
};
// data shared between QTextureAtlasPrivate and the QTextureGenerators
// we use this extra indirection so we can lazily copy the sub-images
// into the actual texture image in the backend texture loader thread.
class QTextureAtlasData
{
public:
QTextureAtlasData(int w, int h, QImage::Format fmt);
~QTextureAtlasData();
int width() const { return m_image.width(); }
int height() const { return m_image.height(); }
void addImage(const AtlasTexture &texture, const QImage &image);
QByteArray createUpdatedImageData();
private:
struct Update {
AtlasTexture textureInfo;
QImage image;
};
QMutex m_mutex;
QImage m_image;
QVector<Update> m_updates;
};
typedef QSharedPointer<QTextureAtlasData> QTextureAtlasDataPtr;
class QTextureAtlasPrivate : public Qt3DRender::QAbstractTexturePrivate
{
public:
QTextureAtlasPrivate();
~QTextureAtlasPrivate();
Q_DECLARE_PUBLIC(QTextureAtlas)
QTextureAtlas::TextureId m_currId = 1; // IDs for new sub-textures
int m_currGen = 0;
QTextureAtlasDataPtr m_data;
QScopedPointer<AreaAllocator> m_allocator;
QOpenGLTexture::PixelFormat m_pixelFormat;
QHash<QTextureAtlas::TextureId, AtlasTexture> m_textures;
};
class QTextureAtlasGenerator : public Qt3DRender::QTextureGenerator
{
public:
QTextureAtlasGenerator(const QTextureAtlasPrivate *texAtlas);
~QTextureAtlasGenerator();
Qt3DRender::QTextureDataPtr operator()() override;
bool operator==(const QTextureGenerator &other) const override;
QT3D_FUNCTOR(QTextureAtlasGenerator)
private:
QTextureAtlasDataPtr m_data;
Qt3DRender::QAbstractTexture::TextureFormat m_format;
QOpenGLTexture::PixelFormat m_pixelFormat;
int m_generation;
Qt3DCore::QNodeId m_atlasId;
};
typedef QSharedPointer<QTextureAtlasGenerator> QTextureAtlasGeneratorPtr;
} // namespace Qt3DExtras
QT_END_NAMESPACE
#endif // QT3DEXTRAS_QTEXTUREATLAS_P_P_H
|
