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39
40#ifndef QSGRHITEXTUREGLYPHCACHE_P_H
41#define QSGRHITEXTUREGLYPHCACHE_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 <QtGui/private/qtextureglyphcache_p.h>
55#include <QtGui/private/qrhi_p.h>
56
57QT_BEGIN_NAMESPACE
58
59class QSGRhiTextureGlyphCache : public QImageTextureGlyphCache
60{
61public:
62 QSGRhiTextureGlyphCache(QRhi *rhi, QFontEngine::GlyphFormat format, const QTransform &matrix,
63 const QColor &color = QColor());
64 ~QSGRhiTextureGlyphCache();
65
66 void createTextureData(int width, int height) override;
67 void resizeTextureData(int width, int height) override;
68 void beginFillTexture() override;
69 void fillTexture(const Coord &c, glyph_t glyph, QFixed subPixelPosition) override;
70 void endFillTexture() override;
71 int glyphPadding() const override;
72 int maxTextureWidth() const override;
73 int maxTextureHeight() const override;
74
75 QRhiTexture *texture() const { return m_texture; }
76 void commitResourceUpdates(QRhiResourceUpdateBatch *mergeInto);
77
78 // Clamp the default -1 width and height to 0 for compatibility with
79 // QOpenGLTextureGlyphCache.
80 int width() const { return qMax(a: 0, b: m_size.width()); }
81 int height() const { return qMax(a: 0, b: m_size.height()); }
82
83 bool eightBitFormatIsAlphaSwizzled() const;
84
85private:
86 void prepareGlyphImage(QImage *img);
87 QRhiTexture *createEmptyTexture(QRhiTexture::Format format);
88
89 QRhi *m_rhi;
90 bool m_resizeWithTextureCopy;
91 QRhiResourceUpdateBatch *m_resourceUpdates = nullptr;
92 QRhiTexture *m_texture = nullptr;
93 QSize m_size;
94 bool m_bgra = false;
95 QVarLengthArray<QRhiTextureUploadEntry, 16> m_uploads;
96 QSet<QRhiTexture *> m_pendingDispose;
97};
98
99QT_END_NAMESPACE
100
101#endif // QSGRHITEXTUREGLYPHCACHE_P_H
102

source code of qtdeclarative/src/quick/scenegraph/qsgrhitextureglyphcache_p.h