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
|
/****************************************************************************
**
** Copyright (C) 2022 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the QtQuick module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:COMM$
**
** 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.
**
** $QT_END_LICENSE$
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
******************************************************************************/
#ifndef QSGRHIDISTANCEFIELDGLYPHCACHE_H
#define QSGRHIDISTANCEFIELDGLYPHCACHE_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 "qsgadaptationlayer_p.h"
#include <private/qsgareaallocator_p.h>
#include <QtGui/private/qrhi_p.h>
QT_BEGIN_NAMESPACE
class QSGDefaultRenderContext;
class Q_QUICK_PRIVATE_EXPORT QSGRhiDistanceFieldGlyphCache : public QSGDistanceFieldGlyphCache
{
public:
QSGRhiDistanceFieldGlyphCache(QSGDefaultRenderContext *rc, const QRawFont &font, int renderTypeQuality);
virtual ~QSGRhiDistanceFieldGlyphCache();
void requestGlyphs(const QSet<glyph_t> &glyphs) override;
void storeGlyphs(const QList<QDistanceField> &glyphs) override;
void referenceGlyphs(const QSet<glyph_t> &glyphs) override;
void releaseGlyphs(const QSet<glyph_t> &glyphs) override;
bool useTextureResizeWorkaround() const;
bool createFullSizeTextures() const;
int maxTextureSize() const;
void setMaxTextureCount(int max) { m_maxTextureCount = max; }
int maxTextureCount() const { return m_maxTextureCount; }
void commitResourceUpdates(QRhiResourceUpdateBatch *mergeInto);
bool eightBitFormatIsAlphaSwizzled() const override;
bool screenSpaceDerivativesSupported() const override;
#if defined(QSG_DISTANCEFIELD_CACHE_DEBUG)
void saveTexture(QRhiTexture *texture, const QString &nameBase) const override;
#endif
private:
bool loadPregeneratedCache(const QRawFont &font);
struct TextureInfo {
QRhiTexture *texture;
QSize size;
QRect allocatedArea;
QDistanceField image;
int padding = -1;
QVarLengthArray<QRhiTextureUploadEntry, 16> uploads;
TextureInfo(const QRect &preallocRect = QRect()) : texture(nullptr), allocatedArea(preallocRect) { }
};
void createTexture(TextureInfo *texInfo, int width, int height, const void *pixels);
void createTexture(TextureInfo *texInfo, int width, int height);
void resizeTexture(TextureInfo *texInfo, int width, int height);
TextureInfo *textureInfo(int index)
{
for (int i = m_textures.count(); i <= index; ++i) {
if (createFullSizeTextures())
m_textures.append(QRect(0, 0, maxTextureSize(), maxTextureSize()));
else
m_textures.append(TextureInfo());
}
return &m_textures[index];
}
QSGDefaultRenderContext *m_rc;
QRhi *m_rhi;
mutable int m_maxTextureSize = 0;
int m_maxTextureCount = 3;
QSGAreaAllocator *m_areaAllocator = nullptr;
QList<TextureInfo> m_textures;
QHash<glyph_t, TextureInfo *> m_glyphsTexture;
QSet<glyph_t> m_unusedGlyphs;
QSet<QRhiTexture *> m_pendingDispose;
};
QT_END_NAMESPACE
#endif // QSGRHIDISTANCEFIELDGLYPHCACHE_H
|
