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39
40#ifndef QSGCOMPRESSEDATLASTEXTURE_P_H
41#define QSGCOMPRESSEDATLASTEXTURE_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 <QtCore/QSize>
55
56#include <QtGui/qopengl.h>
57
58#include <QtQuick/QSGTexture>
59#include <QtQuick/private/qsgareaallocator_p.h>
60#include <QtQuick/private/qsgopenglatlastexture_p.h>
61
62QT_BEGIN_NAMESPACE
63
64class QSGCompressedTextureFactory;
65
66namespace QSGCompressedAtlasTexture {
67
68class Texture;
69
70class Atlas : public QSGOpenGLAtlasTexture::AtlasBase
71{
72public:
73 Atlas(const QSize &size, uint format);
74 ~Atlas();
75
76 void generateTexture() override;
77 void uploadPendingTexture(int i) override;
78
79 Texture *create(const QByteArray &data, int dataLength, int dataOffset, const QSize &size, const QSize &paddedSize);
80
81 uint format() const { return m_format; }
82
83private:
84 uint m_format;
85};
86
87class Texture : public QSGOpenGLAtlasTexture::TextureBase
88{
89 Q_OBJECT
90public:
91 Texture(Atlas *atlas, const QRect &textureRect, const QByteArray &data, int dataLength, int dataOffset, const QSize &size);
92 ~Texture();
93
94 QSize textureSize() const override { return m_size; }
95 bool hasAlphaChannel() const override;
96 bool hasMipmaps() const override { return false; }
97
98 QRectF normalizedTextureSubRect() const override { return m_texture_coords_rect; }
99
100 QSGTexture *removedFromAtlas() const override;
101
102 const QByteArray &data() const { return m_data; }
103 int sizeInBytes() const { return m_dataLength; }
104 int dataOffset() const { return m_dataOffset; }
105
106private:
107 QRectF m_texture_coords_rect;
108 mutable QSGTexture *m_nonatlas_texture;
109 QByteArray m_data;
110 QSize m_size;
111 int m_dataLength;
112 int m_dataOffset;
113};
114
115}
116
117QT_END_NAMESPACE
118
119#endif
120

source code of qtdeclarative/src/quick/scenegraph/compressedtexture/qsgcompressedatlastexture_p.h