| /**************************************************************************** |
| ** |
| ** Copyright (C) 2015 The Qt Company Ltd. |
| ** Contact: http://www.qt.io/licensing/ |
| ** |
| ** This file is part of the QtGui module of the Qt Toolkit. |
| ** |
| ** $QT_BEGIN_LICENSE:LGPL21$ |
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| ** GNU Lesser General Public License Usage |
| ** Alternatively, this file may be used under the terms of the GNU Lesser |
| ** General Public License version 2.1 or version 3 as published by the Free |
| ** Software Foundation and appearing in the file LICENSE.LGPLv21 and |
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| ** |
| ** As a special exception, The Qt Company gives you certain additional |
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| ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. |
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| ****************************************************************************/ |
| |
| // |
| // 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. |
| // |
| |
| #ifndef QOPENGLTEXTURECACHE_P_H |
| #define QOPENGLTEXTURECACHE_P_H |
| |
| #include <QHash> |
| #include <QObject> |
| #include <QCache> |
| #include <private/qopenglcontext_p.h> |
| #include <QtCore/qmutex.h> |
| |
| QT_BEGIN_NAMESPACE |
| |
| class QOpenGLCachedTexture |
| { |
| public: |
| QOpenGLCachedTexture(GLuint id, int options, QOpenGLContext *context); |
| ~QOpenGLCachedTexture() { m_resource->free(); } |
| |
| GLuint id() const { return m_resource->id(); } |
| int options() const { return m_options; } |
| |
| private: |
| QOpenGLSharedResourceGuard *m_resource; |
| int m_options; |
| }; |
| |
| class Q_GUI_EXPORT QOpenGLTextureCache : public QOpenGLSharedResource |
| { |
| public: |
| static QOpenGLTextureCache *cacheForContext(QOpenGLContext *context); |
| |
| QOpenGLTextureCache(QOpenGLContext *); |
| ~QOpenGLTextureCache(); |
| |
| enum BindOption { |
| NoBindOption = 0x0000, |
| PremultipliedAlphaBindOption = 0x0001, |
| UseRedFor8BitBindOption = 0x0002, |
| }; |
| Q_DECLARE_FLAGS(BindOptions, BindOption) |
| |
| GLuint bindTexture(QOpenGLContext *context, const QPixmap &pixmap, QOpenGLTextureCache::BindOptions options = PremultipliedAlphaBindOption); |
| GLuint bindTexture(QOpenGLContext *context, const QImage &image, QOpenGLTextureCache::BindOptions options = PremultipliedAlphaBindOption); |
| |
| void invalidate(qint64 key); |
| |
| void invalidateResource() Q_DECL_OVERRIDE; |
| void freeResource(QOpenGLContext *ctx) Q_DECL_OVERRIDE; |
| |
| private: |
| GLuint bindTexture(QOpenGLContext *context, qint64 key, const QImage &image, QOpenGLTextureCache::BindOptions options); |
| |
| QMutex m_mutex; |
| QCache<quint64, QOpenGLCachedTexture> m_cache; |
| }; |
| |
| Q_DECLARE_OPERATORS_FOR_FLAGS(QOpenGLTextureCache::BindOptions) |
| |
| QT_END_NAMESPACE |
| |
| #endif |
| |