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39
40//
41// W A R N I N G
42// -------------
43//
44// This file is not part of the Qt API. It exists purely as an
45// implementation detail. This header file may change from version to
46// version without notice, or even be removed.
47//
48// We mean it.
49//
50
51#ifndef QOPENGLTEXTURECACHE_P_H
52#define QOPENGLTEXTURECACHE_P_H
53
54#include <QtGui/private/qtguiglobal_p.h>
55#include <QHash>
56#include <QObject>
57#include <QCache>
58#include <private/qopenglcontext_p.h>
59#include <private/qopengltextureuploader_p.h>
60#include <QtCore/qmutex.h>
61
62QT_BEGIN_NAMESPACE
63
64class QOpenGLCachedTexture;
65
66class Q_GUI_EXPORT QOpenGLTextureCache : public QOpenGLSharedResource
67{
68public:
69 static QOpenGLTextureCache *cacheForContext(QOpenGLContext *context);
70
71 QOpenGLTextureCache(QOpenGLContext *);
72 ~QOpenGLTextureCache();
73
74 GLuint bindTexture(QOpenGLContext *context, const QPixmap &pixmap,
75 QOpenGLTextureUploader::BindOptions options = QOpenGLTextureUploader::PremultipliedAlphaBindOption);
76 GLuint bindTexture(QOpenGLContext *context, const QImage &image,
77 QOpenGLTextureUploader::BindOptions options = QOpenGLTextureUploader::PremultipliedAlphaBindOption);
78
79 void invalidate(qint64 key);
80
81 void invalidateResource() override;
82 void freeResource(QOpenGLContext *ctx) override;
83
84private:
85 GLuint bindTexture(QOpenGLContext *context, qint64 key, const QImage &image, QOpenGLTextureUploader::BindOptions options);
86
87 QMutex m_mutex;
88 QCache<quint64, QOpenGLCachedTexture> m_cache;
89};
90
91class QOpenGLCachedTexture
92{
93public:
94 QOpenGLCachedTexture(GLuint id, QOpenGLTextureUploader::BindOptions options, QOpenGLContext *context);
95 ~QOpenGLCachedTexture() { m_resource->free(); }
96
97 GLuint id() const { return m_resource->id(); }
98 QOpenGLTextureUploader::BindOptions options() const { return m_options; }
99
100private:
101 QOpenGLSharedResourceGuard *m_resource;
102 QOpenGLTextureUploader::BindOptions m_options;
103};
104
105QT_END_NAMESPACE
106
107#endif
108
109